Data Binding is an official Google library that allows binding UI components in layouts to data sources in apps. It generates bindings during compilation that match views to variables, and automatically executes changes to UI when data is updated. This avoids manually finding views by ID and setting values, and makes it easier to update UIs when data changes occur.
The document discusses dependency injection (DI) using Dagger 2 in Java. It begins by showing an example of traditional Java code without DI and the issues it can cause. It then introduces DI and how Dagger 2 implements it using annotations and compile-time validation. Key features of Dagger 2 highlighted include its Android compatibility, JSR-330 support, and generated code for easy debugging. The document provides examples of Dagger 2 annotations and APIs for declaring modules, components, scopes, lazy injection, and qualifiers. Overall it serves as an introduction to dependency injection using Dagger 2 in Java applications.
Доклад включает в себя рассмотрение ключевых особенностей библиотеки. Также описывает обработку событий внутри библиотеки и в сформированных биндингах.
Дополнительно рассматривается создание собственных компонентов, расширяющих возможности элементов интерфейса, и в конце будет уделено отдельное внимание реализации двустороннего биндинга.
"Android Data Binding в массы" Михаил АнохинFwdays
Рассмотрим что это такое, как работает, какие возможности предоставляет библиотека, как обрабатываются события внутри бибилиотеки и фрагменты кода сгенерированные для биндингов.
Также узнаем как добавить библиотеку в проект и на практических примерах оценим ее достоинства и недостатки при использовании в проекте.
The document discusses Android Data Binding, which allows binding UI components in XML layouts to data sources in code. It introduces basic data binding, using Observables to track changes, binding collections, and using data binding with RecyclerView. Expressions can be used to bind data and call methods. Data binding avoids findViewById and directly updating views, supports code reuse, and automatically updates UIs when data changes.
The document discusses the components and utilities of the Backbone.js framework. It describes the key components of Backbone - Models, Collections, Views - and how they work together. Models contain interactive data and bind attributes to the DOM. Collections provide methods to manage ordered sets of models. Views handle templating and user interactions. The document also covers utilities like routing and events that help connect components.
The document discusses SOLID principles of object-oriented design. It provides examples of code that demonstrate poor adherence to SOLID and ways the code can be refactored to better follow SOLID. Specifically, it shows how to apply the single responsibility principle, open/closed principle, Liskov substitution principle, interface segregation principle and dependency inversion principle to structure code for flexibility, reusability and maintainability.
The document discusses Android Data Binding, which is an official Google library that allows binding UI components in XML layouts to data sources in code. It was introduced in 2015 and is currently in version 1.0-rc4. The document provides examples of using Data Binding to avoid findViewById(), bind views to models, include layouts, use expressions, handle null values, create custom bindings, and convert between types. It recommends references for further reading on Data Binding.
The document discusses dependency injection (DI) using Dagger 2 in Java. It begins by showing an example of traditional Java code without DI and the issues it can cause. It then introduces DI and how Dagger 2 implements it using annotations and compile-time validation. Key features of Dagger 2 highlighted include its Android compatibility, JSR-330 support, and generated code for easy debugging. The document provides examples of Dagger 2 annotations and APIs for declaring modules, components, scopes, lazy injection, and qualifiers. Overall it serves as an introduction to dependency injection using Dagger 2 in Java applications.
Доклад включает в себя рассмотрение ключевых особенностей библиотеки. Также описывает обработку событий внутри библиотеки и в сформированных биндингах.
Дополнительно рассматривается создание собственных компонентов, расширяющих возможности элементов интерфейса, и в конце будет уделено отдельное внимание реализации двустороннего биндинга.
"Android Data Binding в массы" Михаил АнохинFwdays
Рассмотрим что это такое, как работает, какие возможности предоставляет библиотека, как обрабатываются события внутри бибилиотеки и фрагменты кода сгенерированные для биндингов.
Также узнаем как добавить библиотеку в проект и на практических примерах оценим ее достоинства и недостатки при использовании в проекте.
The document discusses Android Data Binding, which allows binding UI components in XML layouts to data sources in code. It introduces basic data binding, using Observables to track changes, binding collections, and using data binding with RecyclerView. Expressions can be used to bind data and call methods. Data binding avoids findViewById and directly updating views, supports code reuse, and automatically updates UIs when data changes.
The document discusses the components and utilities of the Backbone.js framework. It describes the key components of Backbone - Models, Collections, Views - and how they work together. Models contain interactive data and bind attributes to the DOM. Collections provide methods to manage ordered sets of models. Views handle templating and user interactions. The document also covers utilities like routing and events that help connect components.
The document discusses SOLID principles of object-oriented design. It provides examples of code that demonstrate poor adherence to SOLID and ways the code can be refactored to better follow SOLID. Specifically, it shows how to apply the single responsibility principle, open/closed principle, Liskov substitution principle, interface segregation principle and dependency inversion principle to structure code for flexibility, reusability and maintainability.
The document discusses Android Data Binding, which is an official Google library that allows binding UI components in XML layouts to data sources in code. It was introduced in 2015 and is currently in version 1.0-rc4. The document provides examples of using Data Binding to avoid findViewById(), bind views to models, include layouts, use expressions, handle null values, create custom bindings, and convert between types. It recommends references for further reading on Data Binding.
Would you like to make your Android UI code cleaner and more reactive? Android data binding can help. In this talk you’ll learn everything you need to know about data binding, including why it’s so powerful and how to use it effectively. If you haven’t tried data binding in the past, that’s okay! We’ll start with the basics, assuming no prior knowledge and slowly move into more advanced topics, such as 2-way binding, binding adapters, converters, best practices and common pitfalls to avoid.
The best practices approach for organizing Android applications into logical components has been widely debated by the developer community over the last several years. If you’ve had trouble choosing between MVC, MVP, MVVM and Reactive Architectures, or even understanding how they differ exactly, you’re not alone! Up until now, there has been no official guidance from Google, however at IO’17, Google announced Android Architecture Components as a recommended pattern moving forward. In this session you’ll learn how these architectural patterns relate to each other and the motivations behind each. You’ll also learn how to apply Android Architecture Components effectively through from live code and interactive demonstrations.
탑크리에듀(http://www.topcredu.co.kr)에서 제공하는 스프링프레임워크 & 마이바티스 (Spring Framework, MyBatis)강좌입니다. Spring Ioc 실습(어노테이션기반, 인터페이스, 세터주입)에 대한 자료이니 많은 도움 되셨길 바랍니다. http://ojc.asia/ 에 들어가시면 보다 많은 자료들이 게시되어 있으니 참고바랍니다^^.
Trustparency web doc spring 2.5 & hibernatetrustparency
This document summarizes an example of using Spring 2.5 and Hibernate for a web application. It describes the login and user registration workflows. For login, the request is mapped to a controller which returns a view. For registration, a controller validates user data, which is submitted to a form and stored in the database. Tiles and JSP are used to generate dynamic HTML responses.
This document provides an overview and code samples for fundamental Windows 8 app development topics including controls, data binding, navigation, views, and SQLite database usage. It describes various action and layout controls in Windows 8, how to implement data binding between view models and views, how to use app bars and navigation between pages, handling different app views, and performing basic CRUD operations with a SQLite database in a Windows 8 app.
Vaadin is a Java-based web application framework that allows building rich client-side web applications without JavaScript. The presentation discusses new features in Vaadin 7 including a renewed windowing API, Sass support for styling, redesign forms, improved RPC and state handling, and new JavaScript add-ons capabilities. It also outlines the roadmap for upcoming releases that will add server push, new charts, touch support, and integration with CDI.
This document provides an introduction to dependency injection containers (DIC). It begins by explaining dependency injection and its benefits over direct instantiation, such as easier testing and replacing dependencies. It then introduces the concept of a dependency injection container, which manages object instantiation and wiring of dependencies. Using a container allows configuring services differently for production versus development and avoids deeply nested instantiation code. The document demonstrates implementing a simple DI container and using it to resolve object graphs in place of direct construction.
AngularJs $provide API internals & circular dependency problem.Yan Yankowski
The document provides an overview of AngularJS dependency injection and the $provide service. It explains the differences between providers, factories, services, values, constants, and decorators. It describes how $provide registers these items in the providerCache and instanceCache and instantiates them lazily through the $injector. Circular dependencies can cause errors since items point to each other before being fully instantiated.
Matreshka.js is a JavaScript framework that provides two-way data binding and reactive programming capabilities. It includes classes like Matreshka for the core functionality, Matreshka.Object for defining model objects, and Matreshka.Array for collections. Key features include binding data to DOM nodes, mediating property values, linking properties together, and automatically updating the UI when data changes. Various binders and predefined behaviors are available. The framework supports inheritance, events, and defining custom behaviors.
Matreshka.js is a JavaScript framework that provides two-way data binding and reactive programming capabilities. It includes classes like Matreshka for the core functionality, Matreshka.Object for defining model objects, and Matreshka.Array for collections. Key features include binding data to DOM nodes, mediating property values, linking properties together, and automatically updating the UI when data changes. Various binders and predefined behaviors are available. The framework supports inheritance, events, and defining custom behaviors.
This document discusses using pluggable applications with TurboGears2. It provides an overview of TurboGears2 features like object dispatch, declarative models, and XML template engines. It then demonstrates how to quickly start an application and explore options to add photo galleries, blogs, and wiki pages by plugging in additional applications and customizing templates and models.
Rapid development tools for java ee 8 [tut2998]Payara
Rapid Development Tools for Java EE 8 was a talk given at JavaOne 2017 about new features in Java EE 8 and tools to help with rapid development of Java EE 8 applications. It covered the Reactive Client API and JSON-B support in JAX-RS 2.1, asynchronous events and other new features in CDI 2.0 and Bean Validation 2.0, and how tools like Jeddict can generate Java EE 8 applications from models.
The document discusses ViewModels and testing in Android development. It explains that ViewModels allow data to survive configuration changes and provide data for UI components. ViewModels can help avoid memory leaks, solve lifecycle challenges, and share data between fragments. The document also discusses how to write unit tests for Presenters and ViewModels using tools like Mockito to verify behavior and data values. It emphasizes that testing is important for documentation and allowing safe refactoring of code.
The document discusses using AsyncTask in Android to perform background operations and update the UI thread. It provides an example of using AsyncTask to fetch distance data from the Google Distance Matrix API in the background. Some key points:
1. AsyncTask allows performing operations in the background using doInBackground() and updating the UI using onPostExecute().
2. The example API call is made in doInBackground() and the results are extracted from the JSON response.
3. OnPostExecute() receives the results and updates the UI by setting the distance text on button click.
4. Accessing APIs involves getting a JSONObject from the response and extracting the required values using JSON tags.
5
The document discusses Android testing tools and provides code examples for implementing user authentication using those tools. It recommends Mockito for mocking, Espresso for UI testing, and Dagger for dependency injection. It then shows how to create a UserService class using Dagger dependency injection to handle user authentication via shared preferences. The code is refactored over multiple sections to introduce these tools and improvements like validating the password and keeping the user signed in.
Alfredo PUMEX provides a pluggable mechanism for customizing the SugarCRM Users module without modifying core files. It uses jQuery and Alfredo Patch to dynamically extend the Users module functionality. Extension modules simply provide template and PHP files that are loaded via globbing. This allows customizing detail and edit views, and intercepting save actions to handle custom fields. The document provides an example of refactoring the YAAI module to use this approach instead of overwriting core files.
SE2016 Android Mikle Anokhin "Speed up application development with data bind...Inhacking
Event: #SE2016
Stage: Android
Data: 4 of September 2016
Speaker: Mikle Anokhin
Topic: Speed up application development with data binding
INHACKING site: https://inhacking.com
SE2016 site: http://se2016.inhacking.com/
At upday, we’ve been successfully using the Model-View-ViewModel pattern together with RxJava for more than a year and a half. After sharing with the community a very high-level overview of what this pattern entails, we decided that it’s time to go deeper into the implementation details.
I will present our way of handling Android classes and other 3rd party dependencies, and how we make sure that our code is as unit-testable as possible. I’ll speak about our decision process on how to split classes, may they be Views, ViewModels or DataModels, and the benefits and drawbacks of these separations.
Any non-”Hello World” app will most likely have two things: multiple Activities/Fragments, of which at least one will contain a ListView/RecyclerView. Then I’ll show how we handle lists: how is the data added to the list, and how and who listens and reacts to list items taps.
Would you like to make your Android UI code cleaner and more reactive? Android data binding can help. In this talk you’ll learn everything you need to know about data binding, including why it’s so powerful and how to use it effectively. If you haven’t tried data binding in the past, that’s okay! We’ll start with the basics, assuming no prior knowledge and slowly move into more advanced topics, such as 2-way binding, binding adapters, converters, best practices and common pitfalls to avoid.
The best practices approach for organizing Android applications into logical components has been widely debated by the developer community over the last several years. If you’ve had trouble choosing between MVC, MVP, MVVM and Reactive Architectures, or even understanding how they differ exactly, you’re not alone! Up until now, there has been no official guidance from Google, however at IO’17, Google announced Android Architecture Components as a recommended pattern moving forward. In this session you’ll learn how these architectural patterns relate to each other and the motivations behind each. You’ll also learn how to apply Android Architecture Components effectively through from live code and interactive demonstrations.
탑크리에듀(http://www.topcredu.co.kr)에서 제공하는 스프링프레임워크 & 마이바티스 (Spring Framework, MyBatis)강좌입니다. Spring Ioc 실습(어노테이션기반, 인터페이스, 세터주입)에 대한 자료이니 많은 도움 되셨길 바랍니다. http://ojc.asia/ 에 들어가시면 보다 많은 자료들이 게시되어 있으니 참고바랍니다^^.
Trustparency web doc spring 2.5 & hibernatetrustparency
This document summarizes an example of using Spring 2.5 and Hibernate for a web application. It describes the login and user registration workflows. For login, the request is mapped to a controller which returns a view. For registration, a controller validates user data, which is submitted to a form and stored in the database. Tiles and JSP are used to generate dynamic HTML responses.
This document provides an overview and code samples for fundamental Windows 8 app development topics including controls, data binding, navigation, views, and SQLite database usage. It describes various action and layout controls in Windows 8, how to implement data binding between view models and views, how to use app bars and navigation between pages, handling different app views, and performing basic CRUD operations with a SQLite database in a Windows 8 app.
Vaadin is a Java-based web application framework that allows building rich client-side web applications without JavaScript. The presentation discusses new features in Vaadin 7 including a renewed windowing API, Sass support for styling, redesign forms, improved RPC and state handling, and new JavaScript add-ons capabilities. It also outlines the roadmap for upcoming releases that will add server push, new charts, touch support, and integration with CDI.
This document provides an introduction to dependency injection containers (DIC). It begins by explaining dependency injection and its benefits over direct instantiation, such as easier testing and replacing dependencies. It then introduces the concept of a dependency injection container, which manages object instantiation and wiring of dependencies. Using a container allows configuring services differently for production versus development and avoids deeply nested instantiation code. The document demonstrates implementing a simple DI container and using it to resolve object graphs in place of direct construction.
AngularJs $provide API internals & circular dependency problem.Yan Yankowski
The document provides an overview of AngularJS dependency injection and the $provide service. It explains the differences between providers, factories, services, values, constants, and decorators. It describes how $provide registers these items in the providerCache and instanceCache and instantiates them lazily through the $injector. Circular dependencies can cause errors since items point to each other before being fully instantiated.
Matreshka.js is a JavaScript framework that provides two-way data binding and reactive programming capabilities. It includes classes like Matreshka for the core functionality, Matreshka.Object for defining model objects, and Matreshka.Array for collections. Key features include binding data to DOM nodes, mediating property values, linking properties together, and automatically updating the UI when data changes. Various binders and predefined behaviors are available. The framework supports inheritance, events, and defining custom behaviors.
Matreshka.js is a JavaScript framework that provides two-way data binding and reactive programming capabilities. It includes classes like Matreshka for the core functionality, Matreshka.Object for defining model objects, and Matreshka.Array for collections. Key features include binding data to DOM nodes, mediating property values, linking properties together, and automatically updating the UI when data changes. Various binders and predefined behaviors are available. The framework supports inheritance, events, and defining custom behaviors.
This document discusses using pluggable applications with TurboGears2. It provides an overview of TurboGears2 features like object dispatch, declarative models, and XML template engines. It then demonstrates how to quickly start an application and explore options to add photo galleries, blogs, and wiki pages by plugging in additional applications and customizing templates and models.
Rapid development tools for java ee 8 [tut2998]Payara
Rapid Development Tools for Java EE 8 was a talk given at JavaOne 2017 about new features in Java EE 8 and tools to help with rapid development of Java EE 8 applications. It covered the Reactive Client API and JSON-B support in JAX-RS 2.1, asynchronous events and other new features in CDI 2.0 and Bean Validation 2.0, and how tools like Jeddict can generate Java EE 8 applications from models.
The document discusses ViewModels and testing in Android development. It explains that ViewModels allow data to survive configuration changes and provide data for UI components. ViewModels can help avoid memory leaks, solve lifecycle challenges, and share data between fragments. The document also discusses how to write unit tests for Presenters and ViewModels using tools like Mockito to verify behavior and data values. It emphasizes that testing is important for documentation and allowing safe refactoring of code.
The document discusses using AsyncTask in Android to perform background operations and update the UI thread. It provides an example of using AsyncTask to fetch distance data from the Google Distance Matrix API in the background. Some key points:
1. AsyncTask allows performing operations in the background using doInBackground() and updating the UI using onPostExecute().
2. The example API call is made in doInBackground() and the results are extracted from the JSON response.
3. OnPostExecute() receives the results and updates the UI by setting the distance text on button click.
4. Accessing APIs involves getting a JSONObject from the response and extracting the required values using JSON tags.
5
The document discusses Android testing tools and provides code examples for implementing user authentication using those tools. It recommends Mockito for mocking, Espresso for UI testing, and Dagger for dependency injection. It then shows how to create a UserService class using Dagger dependency injection to handle user authentication via shared preferences. The code is refactored over multiple sections to introduce these tools and improvements like validating the password and keeping the user signed in.
Alfredo PUMEX provides a pluggable mechanism for customizing the SugarCRM Users module without modifying core files. It uses jQuery and Alfredo Patch to dynamically extend the Users module functionality. Extension modules simply provide template and PHP files that are loaded via globbing. This allows customizing detail and edit views, and intercepting save actions to handle custom fields. The document provides an example of refactoring the YAAI module to use this approach instead of overwriting core files.
SE2016 Android Mikle Anokhin "Speed up application development with data bind...Inhacking
Event: #SE2016
Stage: Android
Data: 4 of September 2016
Speaker: Mikle Anokhin
Topic: Speed up application development with data binding
INHACKING site: https://inhacking.com
SE2016 site: http://se2016.inhacking.com/
At upday, we’ve been successfully using the Model-View-ViewModel pattern together with RxJava for more than a year and a half. After sharing with the community a very high-level overview of what this pattern entails, we decided that it’s time to go deeper into the implementation details.
I will present our way of handling Android classes and other 3rd party dependencies, and how we make sure that our code is as unit-testable as possible. I’ll speak about our decision process on how to split classes, may they be Views, ViewModels or DataModels, and the benefits and drawbacks of these separations.
Any non-”Hello World” app will most likely have two things: multiple Activities/Fragments, of which at least one will contain a ListView/RecyclerView. Then I’ll show how we handle lists: how is the data added to the list, and how and who listens and reacts to list items taps.
The document provides an overview of the Android infrastructure and development environment. It discusses:
- The layers of an Android application including presentation, application logic, and domain layers.
- Key aspects of the Android runtime including the Dalvik VM, app lifecycle, resources and context handling.
- Libraries that help with common tasks like compatibility, fragments, networking and dependency injection including the Android Support Library, ActionBarSherlock, Retrofit, Dagger and RoboGuice.
- Alternatives for data storage like SQLite and ORM libraries like ORMLite and GreenDAO.
- Options for testing Android apps using the DVM, JVM, Robotium and Robolectric.
The document provides an overview of the Android infrastructure and key concepts:
(1) It describes the layers of an Android application including the presentation layer, application logic layer, and domain layer.
(2) It explains important Android concepts such as the Android runtime environment, Dalvik virtual machine, application lifecycle and activities, and use of contexts.
(3) It discusses alternatives for common tasks like dependency injection with RoboGuice and Dagger, handling resources and views with ButterKnife and AndroidAnnotations, and accessing data with SQLite and ORMLite.
(4) It also briefly covers testing approaches on the DVM and JVM using AndroidTestCase, Robotium, and Robolectric
The document provides an overview of key concepts in Android development including the application lifecycle, user interface layouts like FrameLayout, LinearLayout, and RelativeLayout, working with lists using ListView and ArrayAdapter, and using intents to start activities and pass data between components. It includes code examples for setting up activities, defining layouts in XML, populating lists, and creating explicit intents.
At upday, we’ve been successfully using the Model-View-ViewModel pattern together with RxJava for more than a year and half. After sharing with the community a very high level overview of what this pattern entails, we decided that it’s time to go deeper in the implementation details.
I will present our way of handling Android classes and other 3rd party dependencies, and how we make sure that our code is as unit-testable as possible. I’ll speak about our decision process on how to split classes, may they be Views, ViewModels or DataModels, and the benefits and drawbacks of these separations.
Any non-”Hello World” app will most likely have two things: multiple Activities/Fragments, of which at least one will contain a ListView/RecyclerView. I will show how we decided to implement the navigation between Views and how we test it. Then I’ll show how we handle lists: how is the data added to the list, and how and who listens and reacts to list items taps.
This document discusses architecture components for building modern Android applications. It covers common app architecture problems and principles like separation of concerns. It introduces key Architecture Components like Activities, Fragments, Services, ContentProviders, ViewModels and LiveData. It also discusses architectural patterns like MVC, MVP, MVVM and recommendations like clean architecture. The document emphasizes principles like modularity, separation of concerns, and testability. It provides an overview of alternatives like Room, Paging Library, and recommendations for legacy apps.
This document discusses architecture components for building modern Android applications. It covers common app architecture problems and principles like separation of concerns. It introduces key Architecture Components like Activities, Fragments, Services, ContentProviders, ViewModels and LiveData. It also discusses architectural patterns like MVC, MVP, MVVM and recommendations like clean architecture. The document emphasizes principles like modularity, separation of concerns, and testability. It provides an overview of alternatives like Room, Paging Library, and recommendations for legacy apps.
This document discusses data binding in Android. It introduces data binding as a way to bind data model objects to UI elements to remove unnecessary code. It describes how to set up data binding by preparing a model, layout, and connecting them in an activity. It also covers some features like importing classes, supporting resources, and expression languages. Finally, it notes some current problems with data binding like poor IDE support and that the API is still in beta.
This document provides an overview of key Android development concepts and techniques. It discusses fragments, the support library, dependency injection, image caching, threading and AsyncTask, notifications, supporting multiple screens, and optimizing ListView performance. The document also recommends several popular Android libraries and open source apps that demonstrate best practices.
Data Binding - Android by Harin Trivediharintrivedi
Data Binding plugin for the android studio which makes the android application development faster than you thought. meduim.com blog series included for reference:
https://medium.com/@Harry91/android-data-binding-binding-view-and-data-part-1-3b9154de09c6
The easy way to develop Java applications has always been the standard stack (Spring, JEE, SQL) that confirms the LAMP equivalent in Java-speak. This presentation compares this model with a real use case based on Guice, Jersey and AppEngine.
This DrupalCon 2019 Amsterdam talk provides a look beyond the world of PHP and Javascript. It explores how other languages such as Ruby, Java, Rust and Perl handle things and highlights some interesting features of those languages. Not all the things that other languages can do can be done in PHP or Javascript but the concepts and ideas can still be used.
Fragments allow modular design of user interfaces on Android. They can be added dynamically at runtime to an activity. Fragments have their own lifecycle and can be reused in multiple activities. The support library provides backward compatibility for fragments on older Android versions. Best practices include using interfaces to communicate between fragments and activities, and retaining fragments across configuration changes. DialogFragments are specialized fragments for showing dialog windows.
Answer1)Responsive design is the idea where all the developed pag.pdfankitcomputer11
Answer:
1)Responsive design is the idea where all the developed pages are embedded with model,view
and controller in the same page of the design so that it is easy for the user to transfer the data
from model to view and view to model.This also reduces the burden on the server when the user
makes any request all the form elements will not reach the server in responsive design but makes
the specific action element to reach the server and gives the output to the user.
2)Application templates in android involves both the layouts and UI components which are used
to build the design pages of the front end of the page.The common layouts which are used are
Gird Layout,Flow Layout,Relative Layout and UI components such as
listview,gridview,spinner,togglebuttons,radiobuttons,progressbar etc are used in any of the front
end design of the android for application to develop.We use XML for the design of the front end
in design in the application.
Android Application :
Note : Deploy the below files in Eclipse Id or Android Studio and run
MainActivity.java
package com.example.listviewcustom;
import java.io.File;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
/*
String path=\"/storage/sdcard0/sample_images/\";
File f=new File(path);
if(f.exists()){
String[] files=f.list();
ArrayAdapter adapter=new ArrayAdapter(getApplicationContext(),
android.R.layout.simple_spinner_dropdown_item,files );
*/
ListView lView=(ListView)findViewById(R.id.listView1);
lView.setAdapter(new MyAdapter(this));
/*
}else{
Toast.makeText(getApplicationContext(), \"Path is not available ....\",2000).show();
}
*/
}
public void reload(){
ListView lView=(ListView)findViewById(R.id.listView1);
lView.setAdapter(new MyAdapter(this));
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}
MyAdapter.java
package com.example.listviewcustom;
import java.io.File;
import android.net.Uri;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebView.FindListener;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
public class MyAdapter extends BaseAdapter{
//String path=\"/storage/sdcard0/sample_images/\";
String path=\"/mnt/sdcard/sample_images/\";
File f=new File(path);
String[] files=f.list();
MainActivity activity;
public MyAdapter(MainActivity mActivity){
this.activity=mActivity;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return files.length;
}
@Override
public Object getItem(int position) {
// TODO Auto-.
This document provides an overview of modern Android development techniques including application architecture patterns like MVC, MVP and MVVM. It discusses topics like dependency injection with Dagger 2, reactive programming with RxJava, HTTP libraries like Retrofit and OkHttp, annotations, testing, using Kotlin and the future of Android development targeting the next billion users across more devices.
This document discusses data binding in Android using the Android Data Binding Library. It provides an overview of data binding, which establishes a connection between application UI and business logic. It then discusses how the Android Data Binding Library works, including using observable objects to notify when data changes. It demonstrates how to set up data binding in an Android project using XML layouts and Java code. It also covers some advanced features like importing classes and methods into XML, handling click events, and surviving screen orientation changes with data binding. Finally, it discusses how data binding is well-suited for the MVVM pattern and concludes with some links for further information.
The document provides an overview of how to get started developing Android applications. It discusses creating an Android project structure with Java code, XML layouts and resources. It also covers basic Android app components like activities, intents, views and lifecycle methods. The document then demonstrates how to work with lists, menus, context menus and storing data using SQLite and a database.
This document discusses various techniques for working with multimedia in Android applications, including detecting device capabilities, loading images from local storage and remote URLs, playing audio files from assets and raw resources, and improving performance through caching and asynchronous loading. It provides code examples for checking if a device has a front-facing camera, loading images while avoiding out of memory errors, playing audio files from assets, and using an AsyncTask to load images asynchronously to avoid blocking the UI. It also discusses potential memory leak issues and strategies for building an image cache.
Honeypots Unveiled: Proactive Defense Tactics for Cyber Security, Phoenix Sum...APNIC
Adli Wahid, Senior Internet Security Specialist at APNIC, delivered a presentation titled 'Honeypots Unveiled: Proactive Defense Tactics for Cyber Security' at the Phoenix Summit held in Dhaka, Bangladesh from 23 to 24 May 2024.
HijackLoader Evolution: Interactive Process HollowingDonato Onofri
CrowdStrike researchers have identified a HijackLoader (aka IDAT Loader) sample that employs sophisticated evasion techniques to enhance the complexity of the threat. HijackLoader, an increasingly popular tool among adversaries for deploying additional payloads and tooling, continues to evolve as its developers experiment and enhance its capabilities.
In their analysis of a recent HijackLoader sample, CrowdStrike researchers discovered new techniques designed to increase the defense evasion capabilities of the loader. The malware developer used a standard process hollowing technique coupled with an additional trigger that was activated by the parent process writing to a pipe. This new approach, called "Interactive Process Hollowing", has the potential to make defense evasion stealthier.
Securing BGP: Operational Strategies and Best Practices for Network Defenders...APNIC
Md. Zobair Khan,
Network Analyst and Technical Trainer at APNIC, presented 'Securing BGP: Operational Strategies and Best Practices for Network Defenders' at the Phoenix Summit held in Dhaka, Bangladesh from 23 to 24 May 2024.
Securing BGP: Operational Strategies and Best Practices for Network Defenders...
Data binding в массы! (1.2)
1. Data Binding в массы!
Анохин Михаил / Android Developer / MWDN Ltd.
2. Data Binding
● представлен на Google I/O 2015
● официальная библиотека от Google
● генерирует биндинг во время компиляции
● на данный момент доступна стабильная версия 1.0 и в
процессе разработки находится версия 2.0 2
7. Data Model
public class User {
private final String firstName;
private final String lastName;
public User(String firstName, String lastName) {
this.firstName = firstName;
this.lastName = lastName;
}
public String getFirstName() {
return firstName;
}
public String getLastName() {
return lastName;
}
}
public class User {
public final String firstName;
public final String lastName;
public User(String firstName, String lastName) {
this.firstName = firstName;
this.lastName = lastName;
}
}
7
12. Data Objects
public class NotifyGreeting extends BaseObservable {
private String name;
@Bindable
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
notifyPropertyChanged(BR.name);
}
}
public class ObservableGreeting {
public ObservableString name
= new ObservableString();
}
12