This document discusses key Android concepts including intents, services, notifications, broadcast receivers, and SQLite databases. It provides details on:
- How intents are used for inter-app communication and different types of intents
- Explicitly and implicitly starting activities and services
- Creating notifications and pending intents
- Service lifecycles when started or bound
- Using AIDL for interprocess communication with services
- How broadcast receivers respond to system-wide broadcasts
- Storing structured data using SQLite databases
The document discusses Android web services using the HttpClient API. It describes invocation styles in HttpClient as synchronous and asynchronous. It provides examples of sending HTTP requests using HttpGet and HttpPost, and receiving HTTP responses using HttpResponse and ResponseHandler interfaces. Common response formats like XML, JSON, RSS and Atom are mentioned and examples of parsing JSON responses using the JSONObject class are given.
The document discusses installing and configuring various Linux applications including Apache, PHP, MySQL, and Postgres. It covers basic Ubuntu installation, system configuration, installing packages, configuring Apache, PHP, and MySQL. Specific instructions are provided for installing Apache, configuring virtual hosts and SSL, installing PHP, and installing and configuring MySQL and phpMyAdmin.
Malware, short for "malicious software," is a digital threat designed to infiltrate, damage, or gain unauthorized access to computer systems, networks, and devices. Malware comes in various forms, such as viruses, worms, trojans, ransomware, and spyware, each with distinct functionalities and methods of attack. These malicious programs exploit vulnerabilities in software or user behavior to compromise data integrity, privacy, and system functionality. To combat malware, comprehensive cybersecurity measures are essential, including regular software updates, robust antivirus solutions, user education, and cautious online behavior.
Android Intents allow communication between app components and sharing of data. An Intent specifies an action and can contain data and extras. There are explicit intents, which target a specific component, and implicit intents, which specify an action that may be handled by multiple apps. Components declare intent filters in the manifest to receive implicit intents matching the filter's action, data, and category. When an implicit intent is received, the system resolves matching components by comparing the intent to intent filters.
An introduction to Intents in Android. First, the presentation introduces the concept of Intents as messages between application components. Then, the difference between implicit and explicit intents is clearly stated, along with a description of the Intent resolution mechanism. The presentation concludes with a step-by-step tutorial on how to cast and intercept Intents from Activities.
This document provides an introduction to JavaScript and its uses for web programming. It explains that JavaScript is a client-side scripting language that allows web pages to become interactive. Some key points covered include:
- JavaScript can change HTML content, styles, validate data, and make calculations.
- Functions are blocks of code that perform tasks when invoked by events or called in code.
- Events like clicks or keyboard presses trigger JavaScript code.
- The DOM (Document Object Model) represents an HTML document that JavaScript can access and modify.
- Forms and user input can be accessed and processed using the DOM.
- Programming flow can be controlled with conditional and loop statements.
-
The document discusses Android threading and how to handle long running tasks to avoid blocking the UI thread. It covers the main UI thread, how to run tasks on a background thread using Thread and Runnable, and how to update the UI from the background thread using runOnUiThread(), post(), postDelayed() and AsyncTask. AsyncTask is recommended as it handles threading for you by running background tasks on a worker thread and calling publishProgress() to update the UI on the main thread.
This document provides an overview of Java servlets technology, including:
1. What Java servlets are and their main purposes and advantages such as portability, power, and integration with server APIs.
2. Key aspects of servlet architecture like the servlet lifecycle, the HttpServletRequest and HttpServletResponse objects, and how different HTTP methods map to servlet methods.
3. Examples of simple servlets that process parameters, maintain a session counter, and examples of deploying servlets in Eclipse IDE.
The document discusses Android web services using the HttpClient API. It describes invocation styles in HttpClient as synchronous and asynchronous. It provides examples of sending HTTP requests using HttpGet and HttpPost, and receiving HTTP responses using HttpResponse and ResponseHandler interfaces. Common response formats like XML, JSON, RSS and Atom are mentioned and examples of parsing JSON responses using the JSONObject class are given.
The document discusses installing and configuring various Linux applications including Apache, PHP, MySQL, and Postgres. It covers basic Ubuntu installation, system configuration, installing packages, configuring Apache, PHP, and MySQL. Specific instructions are provided for installing Apache, configuring virtual hosts and SSL, installing PHP, and installing and configuring MySQL and phpMyAdmin.
Malware, short for "malicious software," is a digital threat designed to infiltrate, damage, or gain unauthorized access to computer systems, networks, and devices. Malware comes in various forms, such as viruses, worms, trojans, ransomware, and spyware, each with distinct functionalities and methods of attack. These malicious programs exploit vulnerabilities in software or user behavior to compromise data integrity, privacy, and system functionality. To combat malware, comprehensive cybersecurity measures are essential, including regular software updates, robust antivirus solutions, user education, and cautious online behavior.
Android Intents allow communication between app components and sharing of data. An Intent specifies an action and can contain data and extras. There are explicit intents, which target a specific component, and implicit intents, which specify an action that may be handled by multiple apps. Components declare intent filters in the manifest to receive implicit intents matching the filter's action, data, and category. When an implicit intent is received, the system resolves matching components by comparing the intent to intent filters.
An introduction to Intents in Android. First, the presentation introduces the concept of Intents as messages between application components. Then, the difference between implicit and explicit intents is clearly stated, along with a description of the Intent resolution mechanism. The presentation concludes with a step-by-step tutorial on how to cast and intercept Intents from Activities.
This document provides an introduction to JavaScript and its uses for web programming. It explains that JavaScript is a client-side scripting language that allows web pages to become interactive. Some key points covered include:
- JavaScript can change HTML content, styles, validate data, and make calculations.
- Functions are blocks of code that perform tasks when invoked by events or called in code.
- Events like clicks or keyboard presses trigger JavaScript code.
- The DOM (Document Object Model) represents an HTML document that JavaScript can access and modify.
- Forms and user input can be accessed and processed using the DOM.
- Programming flow can be controlled with conditional and loop statements.
-
The document discusses Android threading and how to handle long running tasks to avoid blocking the UI thread. It covers the main UI thread, how to run tasks on a background thread using Thread and Runnable, and how to update the UI from the background thread using runOnUiThread(), post(), postDelayed() and AsyncTask. AsyncTask is recommended as it handles threading for you by running background tasks on a worker thread and calling publishProgress() to update the UI on the main thread.
This document provides an overview of Java servlets technology, including:
1. What Java servlets are and their main purposes and advantages such as portability, power, and integration with server APIs.
2. Key aspects of servlet architecture like the servlet lifecycle, the HttpServletRequest and HttpServletResponse objects, and how different HTTP methods map to servlet methods.
3. Examples of simple servlets that process parameters, maintain a session counter, and examples of deploying servlets in Eclipse IDE.
Windows 7 introduced significant changes to event logging, including a new .evtx file format, over 100 additional event logs, and new security event numbering. Event logs provide system, security, and application events but can be noisy on their own; they are best analyzed in conjunction with other evidence to identify potentially important events. Proper collection and reconstruction of event logs on the analyst's system is important to ensure all message details are available.
This document provides an introduction to shell scripting using the bash shell. It covers key concepts such as shell variables, command substitution, quoting, aliases, and initializing files. The shell acts as both a command-line interface and programming language. It executes commands, supports scripting through variables and control structures, and reads initialization files on startup to customize the environment. Well-formed shell scripts allow combining and sequencing commands to perform automated tasks.
MySQL Workbench is a Visual database designing and modeling access tool for MySQL server relational database. It facilitates the creation of new physical data models and modification of existing MySQL databases with reverse/forward engineering and change management functions.
Web controls are used to build the graphical user interface of ASP.NET applications. There are four main types of web controls: intrinsic controls, list controls, rich controls, and validation controls. Intrinsic controls correspond directly to basic HTML elements like text boxes and buttons. List controls handle repetitive elements like drop-down lists and checkboxes. Rich controls provide advanced functionality like calendars. Validation controls validate user input on the client-side before form submission.
An ASP.NET application consists of files, pages, handlers, modules and executable code that can be invoked from a virtual directory. Unlike a Windows application, users do not directly run an ASP.NET application - requests are passed to the ASP.NET worker process. Web pages in the same virtual directory execute in the same application domain. The global.asax file allows handling of application-level events, and configuration is managed through XML configuration files like web.config. ASP.NET uses lazy initialization to create application domains on the first request, and recycles domains periodically to maintain performance.
This document provides an overview of Visual Basic .NET (VB.NET):
- VB.NET is an object-oriented programming language developed by Microsoft that is implemented on the .NET framework. It is not backwards compatible with older VB versions.
- VB.NET supports object-oriented concepts and everything is an object that inherits from the base Object class. It has full access to libraries in the .NET Framework.
- The .NET Framework consists of components like the Common Language Runtime and Class Library that enable multi-platform applications to be developed from languages like VB.NET.
The document discusses DNS (Domain Name System) servers and how they work. It explains that DNS servers translate human-readable domain names to machine-readable IP addresses in 7 steps: 1) A request is made, 2) recursive DNS servers are queried, 3) root nameservers are queried, 4) TLD nameservers are queried, 5) authoritative nameservers are queried, 6) the IP address record is retrieved, and 7) the answer is received. DNS servers act like a phone book to lookup domain names and allow the internet to function by linking names to IP addresses.
This document discusses different types of notifications in Android, including toast notifications, status bar notifications, and alarm manager notifications. It provides code examples for creating each type. Toast notifications display temporary messages on screen without user interaction. Status bar notifications add icons and messages to the status bar that expand when pulled down, and can launch an activity when clicked. The alarm manager allows triggering notifications at specific times in the future.
This document provides an overview of developing a web application using Spring Boot that connects to a MySQL database. It discusses setting up the development environment, the benefits of Spring Boot, basic project structure, integrating Spring MVC and JPA/Hibernate for database access. Code examples and links are provided to help get started with a Spring Boot application that reads from a MySQL database and displays the employee data on a web page.
JavaBeans are reusable software components that can be visually manipulated in builder tools. They follow certain conventions like having a default constructor and getter/setter methods for properties. Beans are platform independent and their methods, properties, and events can be controlled. There are four types of properties beans can expose: simple, indexed, bound, and constrained. Simple properties have a single getter/setter pair while indexed properties support arrays. Bound properties notify listeners of changes while constrained properties can have changes vetoed by listeners.
Event handling involves responding to user actions like clicking buttons or typing text. Events are generated by sources like buttons or keyboards and handled by listeners that implement specific event listener interfaces. The listener is registered with the source to receive notifications when events occur, then processes the event by implementing callback methods defined in the listener interface. Common types of events include action events, item events, and mouse events.
Hashtable is a legacy implementation of a map or key-value pairs in Java. It uses a hash table to store keys and values, where the key is used to find the corresponding value. Hashtable does not allow null keys or values. It is synchronized, which makes it slower than newer implementations like HashMap. Hashtable uses separate chaining to handle collisions when multiple keys hash to the same bucket.
The document discusses client-side JavaScript and DOM (Document Object Model) manipulation. It covers the window object, DOM programming interface, DOM element types like Node and HTML Element. Methods for accessing elements like getElementById(), getElementsByName(), and querySelector() are explained. Working with element attributes, innerHTML, and traversing the DOM using childNodes and parentNode properties are also summarized. The presentation aims to explain DOM and how JavaScript can be used to get, change, add or remove HTML elements.
Web forms are a vital part of ASP.NET applications and are used to create the web pages that clients request. Web forms allow developers to create web applications using a similar control-based interface as Windows applications. The ASP.NET page processing model includes initialization, validation, event handling, data binding, and cleanup stages. The page acts as a container for other server controls and includes elements like the page header.
This document discusses connecting to and interacting with MySQL databases from PHP. It covers connecting to a MySQL database server, selecting databases, executing SQL statements, working with query results, and inserting, updating and deleting records. Functions covered include mysql_connect(), mysql_query(), mysql_fetch_row(), mysql_affected_rows(), and mysql_info(). The document provides examples of connecting to MySQL, selecting databases, executing queries, and accessing and manipulating data.
This document provides an overview of managing user accounts in a Microsoft Windows Server 2003 environment. It discusses the purpose of user accounts and the authentication process. It also describes how to create and manage local, roaming, and mandatory user profiles. Various methods for creating and modifying user accounts using tools like Active Directory Users and Computers and command line utilities are presented.
The document provides an overview of how to build a graphical user interface (GUI) in Java. It discusses the key classes used to create GUI components like JFrame, JPanel, and JButton. It explains how to set layout managers, add components, set frame size and visibility. It also includes sample code to create a simple calculator GUI with a border layout and grid layout. The document is an introduction to developing GUIs in Java using the Swing toolkit.
DCOM extends COM to allow communication between objects on different computers. It uses proxies, stubs, and remote procedure calls to marshal parameters and return values across process boundaries in a transparent way. DCOM provides security, location transparency, language neutrality, and other benefits for distributed object communication.
The document discusses the Domain Name System (DNS) and its components. It explains what DNS is, how it works to translate domain names to IP addresses, the different record types used in DNS like A, NS, MX records. It describes DNS name servers, resolvers, zones and namespaces. It provides examples of DNS configuration files for both master and slave name servers as well as sample zone files mapping names to IP addresses.
The document discusses intents and intent filters in Android. It explains that intents are messages used to start activities, services, and broadcast receivers. Intents contain action, data, category and other fields. Components specify intent filters to describe the intents they can handle. The Android system uses intent resolution to match implicit intents to components based on comparing the intent fields to the filter specifications. Key concepts covered include explicit vs implicit intents, intent filter structure and matching, and special cases for MAIN and LAUNCHER filters.
The document discusses different techniques for implementing activity transitions in Android apps. It covers the basics of shared element transitions introduced in Lollipop, as well as workarounds for older Android versions using custom animations. It also addresses questions about transitions after network requests and between recycler views.
Windows 7 introduced significant changes to event logging, including a new .evtx file format, over 100 additional event logs, and new security event numbering. Event logs provide system, security, and application events but can be noisy on their own; they are best analyzed in conjunction with other evidence to identify potentially important events. Proper collection and reconstruction of event logs on the analyst's system is important to ensure all message details are available.
This document provides an introduction to shell scripting using the bash shell. It covers key concepts such as shell variables, command substitution, quoting, aliases, and initializing files. The shell acts as both a command-line interface and programming language. It executes commands, supports scripting through variables and control structures, and reads initialization files on startup to customize the environment. Well-formed shell scripts allow combining and sequencing commands to perform automated tasks.
MySQL Workbench is a Visual database designing and modeling access tool for MySQL server relational database. It facilitates the creation of new physical data models and modification of existing MySQL databases with reverse/forward engineering and change management functions.
Web controls are used to build the graphical user interface of ASP.NET applications. There are four main types of web controls: intrinsic controls, list controls, rich controls, and validation controls. Intrinsic controls correspond directly to basic HTML elements like text boxes and buttons. List controls handle repetitive elements like drop-down lists and checkboxes. Rich controls provide advanced functionality like calendars. Validation controls validate user input on the client-side before form submission.
An ASP.NET application consists of files, pages, handlers, modules and executable code that can be invoked from a virtual directory. Unlike a Windows application, users do not directly run an ASP.NET application - requests are passed to the ASP.NET worker process. Web pages in the same virtual directory execute in the same application domain. The global.asax file allows handling of application-level events, and configuration is managed through XML configuration files like web.config. ASP.NET uses lazy initialization to create application domains on the first request, and recycles domains periodically to maintain performance.
This document provides an overview of Visual Basic .NET (VB.NET):
- VB.NET is an object-oriented programming language developed by Microsoft that is implemented on the .NET framework. It is not backwards compatible with older VB versions.
- VB.NET supports object-oriented concepts and everything is an object that inherits from the base Object class. It has full access to libraries in the .NET Framework.
- The .NET Framework consists of components like the Common Language Runtime and Class Library that enable multi-platform applications to be developed from languages like VB.NET.
The document discusses DNS (Domain Name System) servers and how they work. It explains that DNS servers translate human-readable domain names to machine-readable IP addresses in 7 steps: 1) A request is made, 2) recursive DNS servers are queried, 3) root nameservers are queried, 4) TLD nameservers are queried, 5) authoritative nameservers are queried, 6) the IP address record is retrieved, and 7) the answer is received. DNS servers act like a phone book to lookup domain names and allow the internet to function by linking names to IP addresses.
This document discusses different types of notifications in Android, including toast notifications, status bar notifications, and alarm manager notifications. It provides code examples for creating each type. Toast notifications display temporary messages on screen without user interaction. Status bar notifications add icons and messages to the status bar that expand when pulled down, and can launch an activity when clicked. The alarm manager allows triggering notifications at specific times in the future.
This document provides an overview of developing a web application using Spring Boot that connects to a MySQL database. It discusses setting up the development environment, the benefits of Spring Boot, basic project structure, integrating Spring MVC and JPA/Hibernate for database access. Code examples and links are provided to help get started with a Spring Boot application that reads from a MySQL database and displays the employee data on a web page.
JavaBeans are reusable software components that can be visually manipulated in builder tools. They follow certain conventions like having a default constructor and getter/setter methods for properties. Beans are platform independent and their methods, properties, and events can be controlled. There are four types of properties beans can expose: simple, indexed, bound, and constrained. Simple properties have a single getter/setter pair while indexed properties support arrays. Bound properties notify listeners of changes while constrained properties can have changes vetoed by listeners.
Event handling involves responding to user actions like clicking buttons or typing text. Events are generated by sources like buttons or keyboards and handled by listeners that implement specific event listener interfaces. The listener is registered with the source to receive notifications when events occur, then processes the event by implementing callback methods defined in the listener interface. Common types of events include action events, item events, and mouse events.
Hashtable is a legacy implementation of a map or key-value pairs in Java. It uses a hash table to store keys and values, where the key is used to find the corresponding value. Hashtable does not allow null keys or values. It is synchronized, which makes it slower than newer implementations like HashMap. Hashtable uses separate chaining to handle collisions when multiple keys hash to the same bucket.
The document discusses client-side JavaScript and DOM (Document Object Model) manipulation. It covers the window object, DOM programming interface, DOM element types like Node and HTML Element. Methods for accessing elements like getElementById(), getElementsByName(), and querySelector() are explained. Working with element attributes, innerHTML, and traversing the DOM using childNodes and parentNode properties are also summarized. The presentation aims to explain DOM and how JavaScript can be used to get, change, add or remove HTML elements.
Web forms are a vital part of ASP.NET applications and are used to create the web pages that clients request. Web forms allow developers to create web applications using a similar control-based interface as Windows applications. The ASP.NET page processing model includes initialization, validation, event handling, data binding, and cleanup stages. The page acts as a container for other server controls and includes elements like the page header.
This document discusses connecting to and interacting with MySQL databases from PHP. It covers connecting to a MySQL database server, selecting databases, executing SQL statements, working with query results, and inserting, updating and deleting records. Functions covered include mysql_connect(), mysql_query(), mysql_fetch_row(), mysql_affected_rows(), and mysql_info(). The document provides examples of connecting to MySQL, selecting databases, executing queries, and accessing and manipulating data.
This document provides an overview of managing user accounts in a Microsoft Windows Server 2003 environment. It discusses the purpose of user accounts and the authentication process. It also describes how to create and manage local, roaming, and mandatory user profiles. Various methods for creating and modifying user accounts using tools like Active Directory Users and Computers and command line utilities are presented.
The document provides an overview of how to build a graphical user interface (GUI) in Java. It discusses the key classes used to create GUI components like JFrame, JPanel, and JButton. It explains how to set layout managers, add components, set frame size and visibility. It also includes sample code to create a simple calculator GUI with a border layout and grid layout. The document is an introduction to developing GUIs in Java using the Swing toolkit.
DCOM extends COM to allow communication between objects on different computers. It uses proxies, stubs, and remote procedure calls to marshal parameters and return values across process boundaries in a transparent way. DCOM provides security, location transparency, language neutrality, and other benefits for distributed object communication.
The document discusses the Domain Name System (DNS) and its components. It explains what DNS is, how it works to translate domain names to IP addresses, the different record types used in DNS like A, NS, MX records. It describes DNS name servers, resolvers, zones and namespaces. It provides examples of DNS configuration files for both master and slave name servers as well as sample zone files mapping names to IP addresses.
The document discusses intents and intent filters in Android. It explains that intents are messages used to start activities, services, and broadcast receivers. Intents contain action, data, category and other fields. Components specify intent filters to describe the intents they can handle. The Android system uses intent resolution to match implicit intents to components based on comparing the intent fields to the filter specifications. Key concepts covered include explicit vs implicit intents, intent filter structure and matching, and special cases for MAIN and LAUNCHER filters.
The document discusses different techniques for implementing activity transitions in Android apps. It covers the basics of shared element transitions introduced in Lollipop, as well as workarounds for older Android versions using custom animations. It also addresses questions about transitions after network requests and between recycler views.
Topics:What is an intent,types of intent,implicit and explicit
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Intent allows Android components to request functionality from other components. There are explicit intents that define the specific component to call and implicit intents that specify an action without a specific component. Data can be passed between components using intents. Components declare intent filters to register the types of intents they can handle. The share intent allows sharing data with other apps like Facebook or Gmail.
The document discusses activities, intents, and event listeners in Android. It defines an activity as a single focused thing the user can interact with and explains the activity lifecycle including methods like onCreate, onStart, onResume, etc. It describes intents as messages that allow communication between app components and how they are used to start activities. It also defines event listeners as a way to handle user interactions and collect data on events like button presses. It provides examples of registering different types of event listeners including anonymous inner classes and having the activity implement listener interfaces.
This document contains information about confidentiality policies for Target Soft Systems. It states that any information contained in the document, including corporate, employee, infrastructure and implementation details, is confidential and proprietary. Unauthorized disclosure or use of this confidential information would be damaging to Target Soft Systems. The information in the document is not to be shared outside of the buyer's proposal evaluation team and is only to be used to evaluate the current proposal.
Intents allow communication between components in Android. They can be explicit, naming a specific component, or implicit, specifying an action for Android to resolve. Intents can share data between components via extras. Components declare intent filters to specify the intents they can handle. Developers can define intents to reuse functionality from other apps or expose functionality to other apps. Intents are a core part of Android that enable reuse and interoperability.
The document discusses Android threading and processes. It explains that by default all components of an application run in the same process and thread, but components can be defined to run in separate processes. It describes how the system manages processes and process importance levels. It also discusses how to handle long operations to avoid blocking the UI thread, including using AsyncTask and Loaders to run operations asynchronously.
This document discusses Android AsyncTask, which allows performing long/background operations without threads. It has four main methods: doInBackground runs the long operation, onPostExecute displays results after completion, onPreExecute runs before doInBackground, and onProgressUpdate reports progress. An example AsyncTask downloads files, tracking progress in onProgressUpdate and displaying results in onPostExecute after doInBackground finishes downloading. AsyncTask requires specifying types for parameters, progress, and results.
This document discusses different types of dialogs in Android, including alert dialogs, single-choice dialogs, dialogs with buttons, and custom dialogs. It explains how to create alert dialogs using the AlertDialog.Builder class and set title, content, and buttons. Code examples are provided to demonstrate creating single-choice, button, and custom dialogs by setting different components and layouts.
Android is an operating system for smartphones and tablets created by Google. Developers write Android applications in Java and can distribute apps through Google Play or other app stores. The document discusses advantages like easy access to apps, disadvantages like lack of documentation, and how to start programming Android apps using the Android SDK and Eclipse IDE. It also covers key Android programming concepts like activities, intents, views, fragments and using XML layouts to define user interfaces.
Android services allow long-running tasks to perform work in the background independently of an application's user interface. There are two main types of services: started services which can perform operations indefinitely even if the starting component is destroyed, and bound services which offer a client-server interface between a component and the service. Services must be started with startService() or bound to with bindService() and have lifecycle callback methods like onStartCommand(), onBind(), onCreate(), and onDestroy(). The IntentService class simplifies started service implementation. Bound services can expose interfaces using Binder, Messenger, or AIDL to allow inter-process communication.
The document discusses key concepts in Android application development including:
- Android applications are developed using Java and compiled into .apk files that run within the Dalvik virtual machine. Each app runs as an isolated "user" with unique permissions.
- The main components of Android apps are Activities, Services, Content Providers, and Broadcast Receivers which handle interfaces, background tasks, data management and system-wide notifications.
- Apps are developed using a combination of XML layouts and Java code, with activities rendering layouts and adding behavior through listeners and callbacks. Common tasks like displaying text, handling clicks, and text-to-speech are demonstrated.
http://fr.droidcon.com/2014/agenda/
http://fr.droidcon.com/2014/agenda/detail?title=Deep+Dive+Into+State+Restoration
Come learn about how Android saves state in general in order to be able to restore an application in the exact same state the process was prior being killed because of a low memory condition or a configuration change. In this talk we will mainly focus on the Parcelable and Parcel objects and how Android uses them to save/restore some important stateful information such as the complete UI state.
Speaker : Cyril Mottier, Capitaine Train
Cyril Mottier is Mobile Software Engineer at Capitaine Train and Android Google Developer Expert. Passionate about technology and design, Cyril is an avid lover of Android and a multi-skilled engineer. He is actively involved in the Android community and shares his passion writing blog posts, creating open source librairies and giving talks. His motto: “Do less, but do it insanely great”
Fragments represent reusable portions of user interface in an activity. An activity can host multiple fragments that the user can navigate between. Fragment transactions allow adding, replacing, and removing fragments within an activity. Fragments can communicate with each other using interfaces to pass data between fragments hosted by the same activity.
[/SUMMARY]
The document discusses processes and threads. A process is an executing program with resources, while a thread is a sequence of execution within a process that shares its resources. Threads have lower overhead than processes and allow for multitasking. However, multithreaded programs are more difficult to debug. Thread management can be done at the user level or kernel level. Different models map user threads to kernel threads, such as many-to-one, one-to-one, and many-to-many.
Lecture Slides for Preferences and Menus [Android ]Nehil Jain
The document discusses different techniques for saving simple application data and preferences in Android, including shared preferences and files. It covers creating and retrieving shared preferences, as well as the preference activity framework which allows defining preference screens in XML. The document also discusses menus in Android, including options menus, context menus, and inflating menu resources.
The document discusses the Android activity lifecycle and data storage options. It describes the key lifecycle methods like onPause(), onResume(), onStop(), and onSaveInstanceState(). It recommends preparing for termination in onStop() or earlier. SharedPreferences and databases are presented as two ways to store data, with SharedPreferences for simple data and databases to organize and query data. The document provides guidance on using SQLiteOpenHelper to manage database version changes and modifying tables with ALTER commands. It outlines the basic process for writing to and reading from an Android database using ContentValues and cursors.
02 programmation mobile - android - (activity, view, fragment)TECOS
This document discusses Android activities and views. It explains that an activity represents a single screen in an app that the user can interact with. The activity lifecycle and methods like onCreate, onPause, onResume are described. Views like buttons, text fields, images are covered along with their attributes. It also discusses intents for launching activities, passing data between activities, and handling activity results.
This document provides an overview of intents, activities, broadcast receivers, and services in Android mobile application development. It defines intents as actions that can be performed, such as starting an activity or service. It describes the two types of intents - implicit and explicit. It also covers the lifecycles of activities and broadcast receivers, and distinguishes between started and bound services. Examples are provided for creating applications that use intents, activities, broadcast receivers, and services.
This chapter looks at Intents — probably the most unique and important concept in Android development. Using implicit Intents, it is possible to request an action be performed on a piece of data, enabling Android to determine which application components can best service that request. Broadcast Intents are used to announce events system wide.
Mobile Application Development -Lecture 09 & 10.pdfAbdullahMunir32
This document discusses several key concepts in mobile application development for Android, including:
- Intents allow communication between application components and activities. They can start new activities explicitly by class or implicitly by requested action.
- Adapters bind data like arrays or cursors to views in a list. The ArrayAdapter and SimpleCursorAdapter are common choices.
- Dialogs present transient messages and allow user input. They can be created from Dialog classes, with a dialog theme, or as Toasts.
- Internet access requires the INTERNET permission. URLs can be opened to get input streams for processing web resources.
The document discusses the basic components of Android applications:
- Activities represent single screens and user interfaces. The first activity launched is the entry point.
- Services run in the background for long-running tasks like playing music.
- Broadcast receivers respond to messages from other apps and the system, like downloading completion.
- Content providers manage shared app data stored in files, databases, and more.
This document discusses Android services. Some key points:
- Services run in the background without a user interface and are not bound to an activity's lifecycle. They are used for long-running or repetitive tasks like downloads or updating content.
- Services have a higher priority than inactive activities so the system is less likely to terminate them. They can also be configured to restart if terminated.
- Services are declared in the manifest and extend the Service class. They can be started with startService() and have lifecycle methods like onStartCommand(), onBind(), onCreate(), onDestroy().
- The onStartCommand() return value determines restart behavior if the service is terminated by the system.
The document discusses various components of an Android application. It describes the four main types of app components: Activities, Services, Broadcast Receivers, and Content Providers. It provides details about what each component type represents and how it is implemented. It also discusses some additional concepts like fragments, views, layouts, intents and resources that are involved in building Android apps.
Data Transfer between Activities & DatabasesMuhammad Sajid
Data Transfer between Activities & Databases, icon: This is displayed as icon for activity. You can check or save png image of name icon in drawable folder. android:icon="@drawable/icon"
• label: The label / title that appears at top in Toolbar of that particular Activity. You can check or edit label name by opening String XML file present inside Values folder
android:label = "@string/label“ or android:label = "New Activity“
Just like icon attribute, if you have not declared any label for your activity then it will be same as your parent activity
There are four main types of application components in Android: activities which represent a single screen in the app, services which run in the background, broadcast receivers which allow the app to respond to system-wide events, and content providers which manage shared app data. The manifest file declares these components and their permissions. The activity lifecycle handles navigating between activities, saving and restoring state, and sending data between components within and between processes.
This document is a tutorial on using BroadcastReceivers in Android. It describes what BroadcastReceivers are, how they are implemented and registered, their lifecycle, and restrictions. It provides examples of using receivers for system broadcasts like boot completed, as well as creating a receiver for phone call events. Key points covered include registering receivers in the manifest, receiving intents, and starting services from receivers.
This document is a tutorial on using BroadcastReceivers in Android. It describes what BroadcastReceivers are, how to implement them, and how to register them either statically in the manifest file or dynamically at runtime. It provides examples of receiving system broadcasts like boot completed, as well as creating a BroadcastReceiver to start a Service when the device boots. It also includes an exercise on creating a BroadcastReceiver to log incoming phone calls by listening for telephony state changes.
Broadcast receivers allow applications to respond to system-wide broadcast messages. They are implemented as subclasses of BroadcastReceiver with an onReceive() method. Receivers must be registered in the Android manifest to listen for broadcasts. Content providers manage access to a structured set of data through a base ContentProvider class which defines standard APIs like query(), insert(), delete(), and update(). Content providers use a content URI and can store data in an SQLite database.
The document discusses the different building blocks of an Android application including activities, services, broadcast receivers, and content providers. It provides details on broadcast receivers, describing them as components that respond to system-wide broadcasts and application-initiated broadcasts. The document gives an example of using a broadcast receiver to capture the SMS receive event and launch an activity to display the SMS with an option to reply. It also discusses programmatically sending SMS from an application.
Android applications are composed of components that include activities, services, broadcast receivers, content providers, intents, widgets, and notifications. Activities provide user interfaces, services perform background tasks, broadcast receivers listen for system-wide broadcasts, content providers manage data access, intents enable communication between components, widgets provide miniature application views, and notifications display alerts without interrupting the user. These components are described in the application manifest and can interact through intents and other defined interfaces.
04 programmation mobile - android - (db, receivers, services...)TECOS
The document discusses content providers, databases, broadcast receivers, services, and notifications in Android mobile app development. Content providers manage access to structured app data and allow sharing data between processes. SQLite is used for databases, with methods like query, insert, update. Broadcast receivers listen for system/app events, services run background tasks, and notifications display messages outside the app UI.
Flurry Analytics Shows us exactly how people are using mobile applications. By using Flurry analytics in your android application, you can keep track of various user metrics like custom events occurring inside the app, crash analytics, number of sessions by a single user etc. Know more about How to Integrate Flurry in Android visit on OnGraph Technologies.
This document discusses Android broadcast receivers. It explains that a broadcast receiver is a component that responds to system-wide broadcast announcements. Many broadcasts originate from the system, like when the screen turns off or a picture is captured. Applications can also initiate broadcasts. The document provides an example of creating a broadcast receiver to handle the android.provider.Telephony.SMS_RECEIVED broadcast and launch an activity when an SMS is received. It also discusses how to add permissions to receive SMS and how to send SMS from an application. It proposes an exercise to create a basic SMS application with tabs for send, inbox, and sent that uses a broadcast receiver to receive and save SMS to a database.
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An activity represents a single screen in an Android application that allows users to interact with the app. There can be multiple activities in an app, with the main activity starting first. Key activity methods include onCreate() to initialize the activity and onPause() to handle leaving the activity. An intent is a message that allows activities and other app components to request actions from each other. Intents can be explicit, specifying the exact component, or implicit, allowing the system to choose the best match. Implicit intents are matched to apps using intent filters declared in the manifest.
Ch5 intent broadcast receivers adapters and internetShih-Hsiang Lin
The document provides an overview of intents, broadcast receivers, adapters, and using internet resources in Android applications. It discusses how intents allow interaction between applications through message passing and how they can be used to start activities, broadcast events, and start services. It covers explicit and implicit intents, returning results from activities, and registering broadcast receivers and activities to handle intents through intent filters. The document also discusses linkify for making links in text views, broadcasting events with intents, and registering broadcast receivers in the manifest.
1. A service in Android is a component that runs in the background without a user interface. Services are used to perform long-running operations or to deliver notifications and other important updates while an app is not actively being used.
2. The document discusses the anatomy of an Android application and the different components - activities, services, content providers, and broadcast receivers. It provides an example service that runs in the background and displays a notification in the notification bar at periodic intervals until stopped.
3. The example creates a service class that extends Service, adds actions to buttons in an activity to start and stop the service, and uses the onStartCommand() method to display a notification at a specified time interval until the service
Similar to Android intents, notification and broadcast recievers (20)
2. What’s our Intent ? Intent in Android Intents are used as a message-passing mechanism that works both within application, and between applications. Intents in Android are used to fulfill the intentions to – An Activity or Service be started to perform an action, usually with (or on) a particular piece of data Broadcast that an event (or action) has occurred Explicitly start a particular Service or Activity Types of Intents Explicit –Where the Activity or the Service class to be loaded is explicitly defined Implicit – Where an action be performed on a piece of data is requested 2
3. Running an Intent Explicitly Switching from one Activity to another Without feedback Intent intent = new Intent(MyActivity.this, MyOtherActivity.class); startActivity(intent); With Feedback private static final int SHOW_SUBACTIVITY = 1; Intent intent = new Intent(this, MyOtherActivity.class); startActivityForResult(intent, SHOW_SUBACTIVITY); 3
4. Implicitly Starting an Activity Implicit Intent is a mechanism that lets anonymous application components service action requests. Implicit Activity is started as a sub-Activity that’s inherently connected to its parent. A sub-Activity triggers an event handler within its parent Activity when it closes. Intentintent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:555-2368")); startActivity(intent); To nominate an action to perform and, optionally, supply the URI of the data to perform that action on. When our sub-Activity is ready to return, call setResult before finish to return a result to the calling Activity. 4
6. Sub-Activity Handler When a sub-Activity closes, the onActivityResult event handler is fired within the calling Activity. Override this method to handle the results returned by sub-Activities. This method takes 3 parameters- Request code The request code that was used to launch the returning sub-Activity. Result code The result code set by the sub-Activity to indicate its result. It can be any integer value, but typically will be either Activity.RESULT_OK or Activity.RESULT_CANCELED. Intent– The Intent used to return the packaged data 6
7. Intent Filters Intent Filters are used to register Activities, Services, and Broadcast Receivers as being capable of performing an action on a particular kind of data. Using Intent Filters, application components announce that they can respond to action requests from any application installed on the device. 1. Android puts together a list of all the Intent Filters available from the installed packages. 2. Intent Filters that do not match the action or category associated with the Intent being resolved are removed from the list. 2.1. Action matches are made 2.2. Category matching is stricter 3. Finally, each part of the Intent’s data URI is compared to the Intent Filterdsata tag. 3.1. The MIME type is the data type of the data being matched 3.2. The scheme is the ‘‘protocol’’ part 3.3 For a hostname to match, the Intent Filter’s scheme must also pass. 7
8. 8 Android Notifications Notification message is shown on the top of the screen, to alert users that events have occurred that may require attention. TheNotificationManagerclass is responsible for handling the Notifications- Its capability are Create new status bar icons Display additional information (and launch an Intent) in the extended status bar window Flash the lights/LEDs Vibrate the phone Sound audible alerts (ringtones, Media Store audio)
9. 9 Creating a Notification Pending Intent By giving a PendingIntent to another application, we are granting it the right to perform the operation we have specified as if the other application was ourself (with the same permissions and identity). This is used in setting the notification Intent intent = new Intent(this, MyActivity.class); PendingIntentlaunchIntent = PendingIntent.getActivity(context, 0, intent, 0); setLatestEventInfo(context,expandedTitle,expandedText,launchIntent);
10. Android Service A Service is an application component that can perform long-running operations in the background and does not provide a user interface. Additionally, a component can bind to a service to interact with it and even perform interprocess communication (IPC). 10
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12. Once started, a service can run in the background indefinitely.
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14. A bound service offers a client-server interface that allows components to interact with the service, send requests, get results, and even do so across processes with interprocess communication (IPC). 11
15. Importance of Services and their use A facility for the application to tell the system about something it wants to be doing in the background (even when the user is not directly interacting with the application). This corresponds to calls to Context.startService(), which ask the system to schedule work for the service, to be run until the service or someone else explicitly stop it. A facility for an application to expose some of its functionality to other applications. This corresponds to calls to Context.bindService(), which allows a long-standing connection to be made to the service in order to interact with it. 12
16. Creating a Service and associating it with an Activity Create a class that extends the Service class Add this new Service to the manifest by adding a new service tag within the application node. Override the onStartCommandand onCreate. Set the return type of the onStartCommandMethod from one of these to set the service behavior a. START_STICKY b. START_NOT_STICKY c. START_REDELIVER_INTENT To start a Service, call startService; we can either use an action to implicitly start a Service with the appropriate Intent Receiver registered, or we can explicitly specify the Service using its class. If the Service requires permissions that our application does not have, the call to startService will throw a SecurityException. To stop a Service use stopService, passing an Intent that defines the Service to stop. 13
17. Service Life Cycle Mode 1 - Context.startService() If someone calls Context.startService() then the system will retrieve the service (creating it and calling its onCreate() method if needed) and then call its onStartCommand(Intent, int, int) method with the arguments supplied by the client. The service will at this point continue running until Context.stopService() or stopSelf() is called. Mode 2 - Context.bindService() On calling Context.bindService() to obtain a persistent connection to a service creates the service if it is not already running (calling onCreate() while doing so), but does not call onStartCommand(). The client will receive the IBinder object that the service returns from its onBind(Intent) method, allowing the client to then make calls back to the service. The service will remain running as long as the connection is established (whether or not the client retains a reference on the service's Ibinder 14
18. 15 Android Interface Definition Language : AIDL It allows we to define the programming interface that both the client and service agree upon in order to communicate with each other using interprocess communication (IPC). When you build each application that contains the .aidl file, the Android SDK tools generate an IBinder interface based on the .aidl file and save it in the project's gen/ directory. The service must implement the IBinder interface as appropriate. To create a bounded service using AIDL, follow these steps: Create the .aidl file This file defines the programming interface with method signatures. Implement the interface The Android SDK tools generate an interface in the Java programming language, based on our .aidl file. This interface has an inner abstract class named Stub that extends Binder and implements methods from our AIDL interface. we must extend the Stub class and implement the methods. Expose the interface to clients Implement a Service and override onBind() to return our implementation of the Stub class.
19. Broadcast Receivers A broadcast receiver is a class which extends BroadcastReceiverclass and which is registered as a receiver in an Android Application via the AndroidManifest.xml (or via code). This class will be able to receive intents via the sendBroadcast() method. Broadcast receiver is a component that responds to system-wide broadcast announcements 16
20. There are two major classes of broadcasts that can be received: Normal broadcasts(sent with Context.sendBroadcast) are completely asynchronous. All receivers of the broadcast are run in an undefined order, often at the same time. This is more efficient. Ordered broadcasts(sent with Context.sendOrderedBroadcast) are delivered to one receiver at a time. As each receiver executes in turn, it can propagate a result to the next receiver, or it can completely abort the broadcast so that it won't be passed to other receivers 17
21. Importance of Broadcast receivers Broadcast receivers are implemented In order to monitor and respond any changes in the intents which are registered with it. We ca attach a Broadcast Receiver with any activity or intent, in which if ay event or state change occurs, we have to perform some action or function corresponding to it. Broadcast receiver responds to system wide announcements, so we can register ay event In the system for monitoring and broadcasting ay change In the desired parameter 18
22. 19 SQLite Databases Android provides full support for SQLite databases. Any databases we create will be accessible by name to any class in the application, but not outside the application. To create a new SQLite database is to create a subclass of SQLiteOpenHelper and override the onCreate() method, in which we can execute a SQLite command to create tables in the database. getWritableDatabase() and getReadableDatabase() To write and read from database, their return type is SQLiteDatabase class that provides methods for database operations. SQLiteDatabase query() methods – to execute queries, these methods takes various parameters, for various quires. CursorIt’s the return type of any SQLite query and the mechanism with which we can navigate results from a database query and read rows and columns.
24. 21 Content Providers Content Providers - Content providers are interfaces to store and retrieve data and make it accessible to all applications. They're the only way to share data across applications How to use content-providers public class MyProvider extends ContentProvider { @Override public boolean onCreate() { // TODO Construct the underlying database. return true; } }
25. 22 Using a Content-provider We should expose a public static CONTENT_URI property that returns the full URI of this provider We will use the URI matcher for this public static final Uri CONTENT_URI = Uri.parse(myURI); static { uriMatcher = new UriMatcher(UriMatcher.NO_MATCH); uriMatcher.addURI("com.paad.provider.myApp", "items", ALLROWS); uriMatcher.addURI("com.paad.provider.myApp", "items/#", SINGLE_ROW); } Then expose queries and transactions on our Content Provider by implementing the delete, insert,update, and query methods. Register our provider by - <provider android:name="MyProvider" android:authorities="com.paad.provider.myapp"/>
26. 23 Using Content-Resolver The Content resolver is the interface that is used to obtain the underlying data using its various abstract methods. ContentResolvercr = getContentResolver(); // Return all rows Cursor allRows = cr.query(MyProvider.CONTENT_URI, null, null, null, null); // Return all columns for rows where column 3 equals a set value // and the rows are ordered by column 5. String where = KEY_COL3 + "=" + requiredValue; String order = KEY_COL5; Cursor someRows = cr.query(MyProvider.CONTENT_URI, null, where, null, order);