The best practice and precautions of the Anvil Annotations framework
The best practice and precautions of the Anvil Annotations framework
Introduction:
Anvil Annotations is a lightweight framework for the Android platform. It uses annotations to simplify the tedious tasks in the Android development process.This article will introduce the best practice and precautions of the Anvil Annotations framework, and provide some Java code examples.
Best Practices:
1. Introduce Anvil Annotations framework:
In the built.gradle file of the project, add the following dependencies:
gradle
dependencies {
implementation 'com.trikke:anvil:1.3.5'
annotationProcessor 'com.trikke:anvil-compiler:1.3.5'
}
2. Use @Layout and @View to define layout and view:
Use @layout and @View annotations to define layouts and views.@Layout annotation is used to specify the layout file, and@VIEW annotations are used to specify the view control.
@Layout(R.layout.activity_main)
public class MainActivity extends Activity {
@View(R.id.button)
Button button;
}
3. Use @init to initialize the view:
Use @Init annotation to initialize the view.In this method, you can set up listeners, data filling and other operations.
@Init
void initViews() {
button.setText("Click me");
button.setOnClickListener(view -> {
// Do something
});
}
4. Use @OnDetach and @onattach to handle the life cycle:
Use the @OnDetach annotation to process the operation when the view is removed from the window, and use the @onattach annotation to process the view to add to the window.
@OnDetach
void onDetach() {
// View detached from window
}
@OnAttach
void onAttach() {
// View attached to window
}
5. Use @prop to update the view:
Use the @Prop annotation to mark the attribute you need to update.When the attribute changes, the Anvil Annotations framework will automatically update the relevant view.
@Override
@Prop
public void setTitle(String title) {
// Update title view
titleView.setText(title);
}
Precautions:
1. Comment use:
Make sure the annotations are used correctly and provide the correct parameters for each annotation.Check whether the annotation is used on the correct class, methods, or fields to avoid triggering compilation errors.
2. View binding:
Make sure that the correct layout file has been specified through the @Layout annotation before using the @View annotation binding view.Otherwise, the view will not be binding properly.
3. Life cycle processing:
When using @OnDetach and @onattach annotations, make sure the number of naming and parameters of the processing method is correct.Otherwise, these methods may never be called.
4. Attribute update:
Make sure that all attributes that need to be updated are used @prop annotations and manually update related views in the corresponding Setter method.Otherwise, the view may not be updated automatically.
in conclusion:
Anvil Annotations framework is a useful tool to simplify Android development.By understanding the best practice and precautions, developers can better use the framework and improve development efficiency.
I hope this article will be helpful to understand the best practice and precautions for understanding the Anvil Annotations framework.For more details, see the official documentation and example code.