Android platform activity
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the Slide for second class with our Android Course. Revise the lesson then do the homework everyone who joined this class =)
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Android activity lifecycle
An Activity is an application component that provides a screen with which users can interact in order to do something, such as dial the phone, take a photo, send an email, or view a map.
Each activity is given a window in which to draw its user interface. The window typically fills the screen, but may be smaller than the screen and float on top of other windows.
An application usually consists of multiple activities that are loosely bound to each other. Typically, one activity in an application is specified as the "main" activity, which is presented to the user when launching the application for the first time. Each activity can then start another activity in order to perform different actions.
Each time a new activity starts, the previous activity is stopped, but the system preserves the activity in a stack .
When a new activity starts, it is pushed onto the back stack and takes user focus.
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Android activity lifecycle
An Android activity represents a single screen in an app. It contains user interface components and widgets. The activity lifecycle describes the 7 key methods that get called when an activity transitions between different states, such as when it is created, becoming visible, interacting with the user, or being destroyed. These methods include onCreate, onStart, onResume, onPause, onStop, onRestart, and onDestroy.
Android Fragment
Fragments allow modular sections of an activity's UI to be reused across activities and configurations. A fragment must be embedded in an activity and shares its lifecycle. Fragments can be added or removed dynamically at runtime and their transactions can be added to a back stack. Activities can combine multiple fragments to build a multi-pane UI on tablets and reuse fragments across activities on handsets. To create a fragment, subclass Fragment and move code from activities into fragment lifecycle methods.
Fragment
Fragments allow modularization of activities on larger screens like tablets. A fragment represents a behavior or UI portion and has its own lifecycle callbacks. Fragments can be placed in an activity layout via XML or added dynamically in code. Multiple fragments can be combined in a single activity to build a multi-pane UI. The activity lifecycle influences fragments, and fragments can be retained across configuration changes using setRetainInstance(true).
What the fragments
Fragments allow dividing the screen into independent portions or chunks and are used to solve tablet design problems. Fragments have their own lifecycle methods and backstack functionality to support multipane screens. Fragments depend on activities' lifecycles and cannot run without a host activity. Activities can add and remove fragments dynamically. Fragments can be created from XML, programmatically by returning a view to the activity, or without an UI. Data can be passed between fragments and activities using bundles or interfaces.
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Android activity lifecycle
An Activity is an application component that provides a screen with which users can interact in order to do something, such as dial the phone, take a photo, send an email, or view a map.
Each activity is given a window in which to draw its user interface. The window typically fills the screen, but may be smaller than the screen and float on top of other windows.
An application usually consists of multiple activities that are loosely bound to each other. Typically, one activity in an application is specified as the "main" activity, which is presented to the user when launching the application for the first time. Each activity can then start another activity in order to perform different actions.
Each time a new activity starts, the previous activity is stopped, but the system preserves the activity in a stack .
When a new activity starts, it is pushed onto the back stack and takes user focus.
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in this presentation i will discuss fragment and how to use it to enhance your android development, also know the basics of making more than one layer in your apps
Android activity lifecycle
An Android activity represents a single screen in an app. It contains user interface components and widgets. The activity lifecycle describes the 7 key methods that get called when an activity transitions between different states, such as when it is created, becoming visible, interacting with the user, or being destroyed. These methods include onCreate, onStart, onResume, onPause, onStop, onRestart, and onDestroy.
Android Fragment
Fragments allow modular sections of an activity's UI to be reused across activities and configurations. A fragment must be embedded in an activity and shares its lifecycle. Fragments can be added or removed dynamically at runtime and their transactions can be added to a back stack. Activities can combine multiple fragments to build a multi-pane UI on tablets and reuse fragments across activities on handsets. To create a fragment, subclass Fragment and move code from activities into fragment lifecycle methods.
Fragment
Fragments allow modularization of activities on larger screens like tablets. A fragment represents a behavior or UI portion and has its own lifecycle callbacks. Fragments can be placed in an activity layout via XML or added dynamically in code. Multiple fragments can be combined in a single activity to build a multi-pane UI. The activity lifecycle influences fragments, and fragments can be retained across configuration changes using setRetainInstance(true).
What the fragments
Fragments allow dividing the screen into independent portions or chunks and are used to solve tablet design problems. Fragments have their own lifecycle methods and backstack functionality to support multipane screens. Fragments depend on activities' lifecycles and cannot run without a host activity. Activities can add and remove fragments dynamically. Fragments can be created from XML, programmatically by returning a view to the activity, or without an UI. Data can be passed between fragments and activities using bundles or interfaces.
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Change is always seen as disorientation and increases anxiety levels in individuals. At times it is also perceived as a threat because we see our "perfectly created life" slipping out of our hands.
Reasons when we welcome Change:
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- Detach yourself from the situation & determine what impact (good/bad) it can have on your life.
- Don't Flight or Fight, Look at Change positively as it can be a means to achieve your goals.
- Start working hard towards a new journey.
- Keep the ‘End’ in mind & then work towards it; this will motivate you to come closer to your dreams.
- Enjoy the Changed situations.
- But be better prepared for the upcoming ‘Unanticipated Change’.
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The document summarizes key aspects of entertainment law related to contract formation and obligations. It discusses requirements for valid contracts such as offer/acceptance, consideration, and capacity. It also covers duration limits, bankruptcy implications, and obligations of performers/authors including creative control, breach terms, morals clauses, and non-competition agreements. Examples are provided of relevant court cases that address these entertainment law contract issues.
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The document discusses Android activities and fragments. It defines an activity as representing a single screen with a user interface. It notes that an app may have multiple activities for different screens like email lists, compose, and read. It then discusses the activity lifecycle and callbacks like onCreate(), onStart(), onResume(), etc. It provides an example logging the lifecycle. It defines a fragment as a modular piece of UI/behavior that can be placed in an activity. It discusses combining fragments in different configurations for tablets vs phones. It also covers the fragment lifecycle and provides an example creating two fragments for landscape and portrait orientations.
Activity
The document discusses Android activities and fragments. It defines an activity as representing a single screen with a user interface. It notes that an app may have multiple activities for different screens like email lists, compose, and read. It then discusses the activity lifecycle and callbacks like onCreate, onStart, onResume, etc. It provides an example to log the lifecycle methods.
The document then defines a fragment as a modular section of an activity, like a sub-activity, that has its own layout and lifecycle. It notes fragments allow dividing the screen between different parts. It provides an example of how two fragments could be used together in landscape mode but separated in portrait mode. It discusses the fragment lifecycle callbacks as
Activity
The document discusses activities and fragments in Android. It defines an activity as representing a single screen with a user interface. Activities have a lifecycle defined by callback methods like onCreate(), onStart(), onResume(), etc. Fragments allow dividing the UI of an activity and are like sub-activities with their own layout and lifecycle. Fragments were introduced later than activities to allow multiple modular UI components within a single activity.
Activity
The document discusses Android activities and fragments. It defines an activity as representing a single screen with a user interface. It notes that an app may have multiple activities for different screens like email lists, compose, and read. It then discusses the activity lifecycle and callbacks like onCreate(), onStart(), onResume(), etc. It provides an example logging the lifecycle. It defines a fragment as a modular piece of UI/behavior that can be placed in an activity. It discusses combining fragments in different configurations for tablets vs phones. It also covers the fragment lifecycle and provides an example creating two fragments for landscape and portrait orientations.
Android Basic Components
The document discusses the basic components of an Android app. It explains that an Android app consists of components like activities, services, broadcast receivers, and content providers. Activities provide the main user interface and common ones include launching the app and navigating within it. The app manifest file defines these components. The document also covers activities and intents, explaining how activities are launched via explicit and implicit intents and how data can be passed between activities.
Android development - Activities, Views & Intents
Activities provide screens for user interaction and have lifecycles to manage memory. The lifecycle involves states like active, paused, stopped which trigger callbacks like onCreate(), onStart(), onPause(). Views are UI components like TextView and occupy a rectangular area, with attributes like width, height. ViewGroups arrange views and include LinearLayout and RelativeLayout. Input events like clicks are handled via listeners. Intents launch other activities by specifying the class and optional data.
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This document provides an introduction to creating interactive maps using web tools. The key points covered are:
1. The reader will learn how to create their own interactive map containing real data and understand how to leverage the potential of web tools to produce maps.
2. Examples are given of existing maps made with tools like Stamen Design, MapBox, and the New York Times that use styling and real data.
3. The document walks through the steps to style maps, add data and markers, batch process data, and create customizable info windows using tools like the Google Maps API and JSON.
4. An assignment is given for students to collect address data and observations that will later be added to a
Web Mashup Slides For Lesson 2
The document discusses using Keyhole Markup Language (KML) to create maps with web tools like Google Earth and Maps. It explains the hierarchical structure of KML files and how they must be hosted online to be rendered. It provides examples of basic KML code structure and shows how to load KML files into Google Maps to visualize location data and create markers. It also discusses how to work with multiple KML files by building a checklist interface to toggle loading different KML layers.
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The document summarizes key aspects of entertainment law related to contract formation and obligations. It discusses requirements for valid contracts such as offer/acceptance, consideration, and capacity. It also covers duration limits, bankruptcy implications, and obligations of performers/authors including creative control, breach terms, morals clauses, and non-competition agreements. Examples are provided of relevant court cases that address these entertainment law contract issues.
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The document discusses adapter and cache techniques in Android. It explains that an adapter acts as a bridge between a view and underlying data. It transforms data into views. The adapter is responsible for creating a view for each item. It also discusses using view holders and lists to improve performance. It provides examples of caching views for scrolling and caching data to avoid duplicate network requests and optimize loading images.
Change Management
The law of the nature says Change! and the first human instinct says What Change? I am fine.
The human philosophy towards work:
Theories suggest that as individuals we love to follow routines as it does not require much of hard work.At any point in time, if we are asked to leave our comfort zones, because things are changing, it is natural for us to dislike change & feel how unfair the whole situation is.
Change is perceived as an Evil:
Change is always seen as disorientation and increases anxiety levels in individuals. At times it is also perceived as a threat because we see our "perfectly created life" slipping out of our hands.
Reasons when we welcome Change:
- Either we are too much in PAIN & want to get rid of it.
- Or we are in too much in PLEASURE that we won’t mind it.
Coping with The Change Cycle:
- Anticipate Change, as it will happen. If not today then tomorrow.
- Detach yourself from the situation & determine what impact (good/bad) it can have on your life.
- Don't Flight or Fight, Look at Change positively as it can be a means to achieve your goals.
- Start working hard towards a new journey.
- Keep the ‘End’ in mind & then work towards it; this will motivate you to come closer to your dreams.
- Enjoy the Changed situations.
- But be better prepared for the upcoming ‘Unanticipated Change’.
Cheatsheet
The document summarizes key aspects of entertainment law related to contract formation and obligations. It discusses requirements for valid contracts such as offer/acceptance, consideration, and capacity. It also covers duration limits, bankruptcy implications, and obligations of performers/authors including creative control, breach terms, morals clauses, and non-competition agreements. Examples are provided of relevant court cases that address these entertainment law contract issues.
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Throughout the session, participants will discover how this synergy empowers testers to automate repetitive tasks, enhance testing accuracy, and expedite the software testing life cycle. Topics covered include the seamless integration process, practical use cases, and the benefits of harnessing AI-driven automation for UiPath testing initiatives. By attending this webinar, testers, and automation professionals can gain valuable insights into harnessing the power of AI to optimize their test automation workflows within the UiPath ecosystem, ultimately driving efficiency and quality in software development processes.
What will you get from this session?
1. Insights into integrating generative AI.
2. Understanding how this integration enhances test automation within the UiPath platform
3. Practical demonstrations
4. Exploration of real-world use cases illustrating the benefits of AI-driven test automation for UiPath
Topics covered:
What is generative AI
Test Automation with generative AI and Open AI.
UiPath integration with generative AI
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
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Maruthi Prithivirajan, Head of ASEAN & IN Solution Architecture, Neo4j
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Dr. Sean Tan, Head of Data Science, Changi Airport Group
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Driving Business Innovation: Latest Generative AI Advancements & Success Story
Are you ready to revolutionize how you handle data? Join us for a webinar where we’ll bring you up to speed with the latest advancements in Generative AI technology and discover how leveraging FME with tools from giants like Google Gemini, Amazon, and Microsoft OpenAI can supercharge your workflow efficiency.
During the hour, we’ll take you through:
Guest Speaker Segment with Hannah Barrington: Dive into the world of dynamic real estate marketing with Hannah, the Marketing Manager at Workspace Group. Hear firsthand how their team generates engaging descriptions for thousands of office units by integrating diverse data sources—from PDF floorplans to web pages—using FME transformers, like OpenAIVisionConnector and AnthropicVisionConnector. This use case will show you how GenAI can streamline content creation for marketing across the board.
Ollama Use Case: Learn how Scenario Specialist Dmitri Bagh has utilized Ollama within FME to input data, create custom models, and enhance security protocols. This segment will include demos to illustrate the full capabilities of FME in AI-driven processes.
Custom AI Models: Discover how to leverage FME to build personalized AI models using your data. Whether it’s populating a model with local data for added security or integrating public AI tools, find out how FME facilitates a versatile and secure approach to AI.
We’ll wrap up with a live Q&A session where you can engage with our experts on your specific use cases, and learn more about optimizing your data workflows with AI.
This webinar is ideal for professionals seeking to harness the power of AI within their data management systems while ensuring high levels of customization and security. Whether you're a novice or an expert, gain actionable insights and strategies to elevate your data processes. Join us to see how FME and AI can revolutionize how you work with data!
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HCL Notes and Domino License Cost Reduction in the World of DLAU
Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-and-domino-license-cost-reduction-in-the-world-of-dlau/
The introduction of DLAU and the CCB & CCX licensing model caused quite a stir in the HCL community. As a Notes and Domino customer, you may have faced challenges with unexpected user counts and license costs. You probably have questions on how this new licensing approach works and how to benefit from it. Most importantly, you likely have budget constraints and want to save money where possible. Don’t worry, we can help with all of this!
We’ll show you how to fix common misconfigurations that cause higher-than-expected user counts, and how to identify accounts which you can deactivate to save money. There are also frequent patterns that can cause unnecessary cost, like using a person document instead of a mail-in for shared mailboxes. We’ll provide examples and solutions for those as well. And naturally we’ll explain the new licensing model.
Join HCL Ambassador Marc Thomas in this webinar with a special guest appearance from Franz Walder. It will give you the tools and know-how to stay on top of what is going on with Domino licensing. You will be able lower your cost through an optimized configuration and keep it low going forward.
These topics will be covered
- Reducing license cost by finding and fixing misconfigurations and superfluous accounts
- How do CCB and CCX licenses really work?
- Understanding the DLAU tool and how to best utilize it
- Tips for common problem areas, like team mailboxes, functional/test users, etc
- Practical examples and best practices to implement right away
GraphSummit Singapore | Graphing Success: Revolutionising Organisational Stru...
Sudheer Mechineni, Head of Application Frameworks, Standard Chartered Bank
Discover how Standard Chartered Bank harnessed the power of Neo4j to transform complex data access challenges into a dynamic, scalable graph database solution. This keynote will cover their journey from initial adoption to deploying a fully automated, enterprise-grade causal cluster, highlighting key strategies for modelling organisational changes and ensuring robust disaster recovery. Learn how these innovations have not only enhanced Standard Chartered Bank’s data infrastructure but also positioned them as pioneers in the banking sector’s adoption of graph technology.
Cosa hanno in comune un mattoncino Lego e la backdoor XZ?
ABSTRACT: A prima vista, un mattoncino Lego e la backdoor XZ potrebbero avere in comune il fatto di essere entrambi blocchi di costruzione, o dipendenze di progetti creativi e software. La realtà è che un mattoncino Lego e il caso della backdoor XZ hanno molto di più di tutto ciò in comune.
Partecipate alla presentazione per immergervi in una storia di interoperabilità, standard e formati aperti, per poi discutere del ruolo importante che i contributori hanno in una comunità open source sostenibile.
BIO: Sostenitrice del software libero e dei formati standard e aperti. È stata un membro attivo dei progetti Fedora e openSUSE e ha co-fondato l'Associazione LibreItalia dove è stata coinvolta in diversi eventi, migrazioni e formazione relativi a LibreOffice. In precedenza ha lavorato a migrazioni e corsi di formazione su LibreOffice per diverse amministrazioni pubbliche e privati. Da gennaio 2020 lavora in SUSE come Software Release Engineer per Uyuni e SUSE Manager e quando non segue la sua passione per i computer e per Geeko coltiva la sua curiosità per l'astronomia (da cui deriva il suo nickname deneb_alpha).
AI 101: An Introduction to the Basics and Impact of Artificial Intelligence
Imagine a world where machines not only perform tasks but also learn, adapt, and make decisions. This is the promise of Artificial Intelligence (AI), a technology that's not just enhancing our lives but revolutionizing entire industries.
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Removing Uninteresting Bytes in Software Fuzzing
Imagine a world where software fuzzing, the process of mutating bytes in test seeds to uncover hidden and erroneous program behaviors, becomes faster and more effective. A lot depends on the initial seeds, which can significantly dictate the trajectory of a fuzzing campaign, particularly in terms of how long it takes to uncover interesting behaviour in your code. We introduce DIAR, a technique designed to speedup fuzzing campaigns by pinpointing and eliminating those uninteresting bytes in the seeds. Picture this: instead of wasting valuable resources on meaningless mutations in large, bloated seeds, DIAR removes the unnecessary bytes, streamlining the entire process.
In this work, we equipped AFL, a popular fuzzer, with DIAR and examined two critical Linux libraries -- Libxml's xmllint, a tool for parsing xml documents, and Binutil's readelf, an essential debugging and security analysis command-line tool used to display detailed information about ELF (Executable and Linkable Format). Our preliminary results show that AFL+DIAR does not only discover new paths more quickly but also achieves higher coverage overall. This work thus showcases how starting with lean and optimized seeds can lead to faster, more comprehensive fuzzing campaigns -- and DIAR helps you find such seeds.
- These are slides of the talk given at IEEE International Conference on Software Testing Verification and Validation Workshop, ICSTW 2022.
Essentials of Automations: The Art of Triggers and Actions in FME
In this second installment of our Essentials of Automations webinar series, we’ll explore the landscape of triggers and actions, guiding you through the nuances of authoring and adapting workspaces for seamless automations. Gain an understanding of the full spectrum of triggers and actions available in FME, empowering you to enhance your workspaces for efficient automation.
We’ll kick things off by showcasing the most commonly used event-based triggers, introducing you to various automation workflows like manual triggers, schedules, directory watchers, and more. Plus, see how these elements play out in real scenarios.
Whether you’re tweaking your current setup or building from the ground up, this session will arm you with the tools and insights needed to transform your FME usage into a powerhouse of productivity. Join us to discover effective strategies that simplify complex processes, enhancing your productivity and transforming your data management practices with FME. Let’s turn complexity into clarity and make your workspaces work wonders!
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Android platform activity
- 1. Android platform Activity Cao Minh Vu 1 cmv.ict@gmail.com
- 2. Outline What is activity Starting activity Shutting down activity Activity lifecycle Save state Back stack Tips 2
- 3. What is activity An application component A screen with which user can interact A window to draw its UI 3
- 4. Creating an activity Declare in manifest.xml Implement xml layout (optional) Extends from Activity 4
- 5. Starting an activity By name Intent intent = new Intent(this, SignInActivity.class); startActivity(intent); By action Intent intent = new Intent(“com.multi.action_show”); startActivity(intent); 5
- 6. Starting an activity (cont) Start for result Intent intent = new Intent((Intent.ACTION_PICK); intent.setType(“video/*”); startActivityForResult(intent, requestCode); protected void onActivityResult(int requestCode, int resultCode, Intent data) { } 6
- 7. Shutting down an activity Explicitly Finish(); Implicitly Let the system do it (when user press BACK HW) Force Close 7
- 8. Activity lifecycle onCreate(Bundle savedInstanceState) initialize the essential components setContentView(); onResume() just before the activity starts interacting with the user (foreground) OnPause() Another activity is in the foreground + focus, but this one is still visible => completely alive partially transparent or doesn't cover the entire 8 screen
- 9. Activity lifecycle (cont) OnStop() completely obscured by another activity (=>background) is not attached to the window manager 9
- 10. Activity lifecycle (cont) 10
- 11. Save state 11
- 12. Back stack Android Manifest "standard" (the default mode) "singleTop" "singleTask" "singleInstance" Flag FLAG_ACTIVITY_NEW_TASK (single task) FLAG_ACTIVITY_SINGLE_TOP (single top) FLAG_ACTIVITY_CLEAR_TOP 12
- 13. Configuration change Screen orientation, change language... Call onDestroy and onCreate() Avoid ? <activity android:name=".CustomGalleryActivity" android:configChanges="keyboardHidden| orientation"/> 13
- 14. Homework Given activities started in order: A->B-C->D Draw the back stack to illustrate 2 cases: 1. Start new activity D 2. Start new activity B with modes: standard, singleTop, singleTask, singleInstance and Flag: FLAG_ACTIVITY_NEW_TASK, FLAG_ACTIVITY_SINGLE_TOP, FLAG_ACTIVITY_CLEAR_TOP Requirement: Draw back stack state when start new activity and 14 then press back HW until the program is closed
- 15. Tips 15
- 16. Reference http://developer.android.com/guide/topics/funda mentals/activities.html 16