public class MyApplication extends Application implements Application.ActivityLifecycleCallbacks{
//
//

    @Override
    public void onActivityCreated(@NonNull Activity activity, @Nullable Bundle savedInstanceState) {
//мой код
    }

    @Override
    public void onActivityStarted(@NonNull Activity activity) {
//мой код
    }

    @Override
    public void onActivityResumed(@NonNull Activity activity) {
//мой код
    }

    @Override
    public void onActivityPaused(@NonNull Activity activity) {
    }

    @Override
    public void onActivityStopped(@NonNull Activity activity) {
    }

    @Override
    public void onActivitySaveInstanceState(@NonNull Activity activity, @NonNull Bundle outState) {

    }

    @Override
    public void onActivityDestroyed(@NonNull Activity activity) {
    }

    <application
        android:name=".MyApplication"
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/_app_name"
        android:requestLegacyExternalStorage="true"
        android:supportsRtl="true"
        android:theme="@style/AppTheme"
        android:usesCleartextTraffic="true">