Gradle
dependencies {
implementation 'androidx.lifecycle:lifecycle-runtime:2.3.1'
annotationProcessor 'androidx.lifecycle:lifecycle-compiler:2.3.1'
}
Java
import androidx.lifecycle.Lifecycle;
import androidx.lifecycle.LifecycleObserver;
import androidx.lifecycle.OnLifecycleEvent;
public class MyLifecycleObserver implements LifecycleObserver {
@OnLifecycleEvent(Lifecycle.Event.ON_CREATE)
public void onCreate() {
}
@OnLifecycleEvent(Lifecycle.Event.ON_START)
public void onStart() {
}
@OnLifecycleEvent(Lifecycle.Event.ON_STOP)
public void onStop() {
}
@OnLifecycleEvent(Lifecycle.Event.ON_DESTROY)
public void onDestroy() {
}
}
Java
import android.os.Bundle;
import androidx.appcompat.app.AppCompatActivity;
import androidx.lifecycle.LifecycleRegistry;
public class MainActivity extends AppCompatActivity {
private LifecycleRegistry mLifecycleRegistry;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mLifecycleRegistry = new LifecycleRegistry(this);
mLifecycleRegistry.addObserver(new MyLifecycleObserver());
}
@Override
public LifecycleRegistry getLifecycle() {
return mLifecycleRegistry;
}
}
