Android dependence on the best practice of the integration of injection libraries and Java libraries

Android dependence on the best practice of integrating injecting libraries and Java libraries Dependency inject is a common software design mode that helps us effectively manage and organize applications to dependence on applications.In Android development, we often use dependency injection libraries to simplify our code and improve maintenance and testability.However, when we need to integrate with the Java library, we may encounter some challenges.This article will introduce the best practice of Android dependencies in injection libraries and Java libraries, and provide some Java code examples. 1. Import java class library Before using the Java library in the project, we need to import it into our Android project.For projects built using Gradle, we can achieve it by adding dependencies in the project's built.gradle file.For example, to introduce a Java class library called "Example-Library", we can add the following code to the Build.gradle file: groovy dependencies { implementation 'com.example:example-library:1.0.0' } 2. Register a java class library Some dependencies need to register the class library we want to use during the launch of the application.Usually, we can complete this task in the Application class of the application.Taking Dagger2 as an example, we can add the following code to the OnCreate method of the Application class: public class MyApplication extends Application { @Override public void onCreate() { super.onCreate(); AppComponent appComponent = DaggerAppComponent.builder() .applicationModule(new ApplicationModule(this)) .build(); // Register the Java class library we want to use appComponent.inject(this); } } In this example, we created an AppComponent and constructed through daggerappcomponent.builder ().Then, we pass the ApplicationModule method to pass the instance of Application to configure the injecting module.Finally, we injected the Application instance into the AppComponent through the Inject method and completed the registration of the Java class library. 3. Use the Java class library in Android components Once we successfully integrate Java libraries with dependencies into libraries, we can use this class library in the Android component (such as Activity, Fragment, etc.).Taking Dagger2 as an example, we can use @inject annotations to inject instances of Java libraries.First of all, where we want to use the Java library, we need to add @Inject annotations. public class MyActivity extends AppCompatActivity { @Inject ExampleLibrary exampleLibrary; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // Use the java class library exampleLibrary.doSomething(); } } In this example, we added @inject annotations to the MyActivity class and created an ExampleLibrary instance called Examplelibrary.When the MyACTIVITY instance is created, Dagger2 will automatically provide examples to EXAMPLELIBRARY through dependency injection.We can then use this instance in the oncreate method. 4. Treatment of the dependencies of the Java library When integrated with the Java library, some dependencies may be encountered.Some Java libraries may depend on other libraries or additional configurations.In this case, we need to ensure that these dependencies are added to our projects.For the project built by Gradle, we can add these dependencies in the DEPENDENDENCIES part of the build.gradle file. groovy dependencies { implementation 'com.example:example-library:1.0.0' implementation 'com.example:dependency-library:1.0.0' } In this example, we add other libraries called "Dependency-Library" to Java library dependencies. Summarize: Android depends on the integration of the injection library and the Java library requires some additional configuration.We first need to guide the Java library into our Android project and register these class libraries in the Application class of the application.Then, by using @inject annotations to inject the Java class library in the Android component, we can easily use them in the project.When dealing with the dependence of the Java library, we need to ensure that all the necessary libraries are added to our project. I hope this article can help you better integrate Android dependencies in injection libraries and Java class libraries.If you have any questions, please ask at any time.