Ahora nos encontramos con la necesidad de saber si mi “Activity” se encuentra activa. Bueno para eso sirve “ActivityLifecycleCallbacks”.
Primero debemos crear una clase que herede de “Application” y que implemente la interfaz “ActivityLifecycleCallbacks”.
public class MyApplication extends Application implements Application.ActivityLifecycleCallbacks { private static final String TAG = MyApplication.class.getSimpleName(); @Override public void onCreate() { registerActivityLifecycleCallbacks(this); } @Override public void onActivityCreated(Activity activity, Bundle savedInstanceState) { Log.i(TAG, "onActivityCreated: activity.getLocalClassName = " + activity.getLocalClassName()); } @Override public void onActivityStarted(Activity activity) { Log.i(TAG, "onActivityStarted: activity.getLocalClassName = " + activity.getLocalClassName()); } @Override public void onActivityResumed(Activity activity) { Log.i(TAG, "onActivityResumed: activity.getLocalClassName = " + activity.getLocalClassName()); } @Override public void onActivityPaused(Activity activity) { Log.i(TAG, "onActivityPaused: activity.getLocalClassName = " + activity.getLocalClassName()); } @Override public void onActivityStopped(Activity activity) { Log.i(TAG, "onActivityStopped: activity.getLocalClassName = " + activity.getLocalClassName()); } @Override public void onActivitySaveInstanceState(Activity activity, Bundle outState) { Log.i(TAG, "onActivitySaveInstanceState: activity.getLocalClassName = " + activity.getLocalClassName()); } @Override public void onActivityDestroyed(Activity activity) { Log.i(TAG, "onActivityDestroyed: activity.getLocalClassName = " + activity.getLocalClassName()); } } |
Por último en el archivo manifiesto agregan la clase recién creada
...
<application
android:name="MyApplication"
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name">
... |
Analista/Desarrollador y cofundador de QBit Mexhico. Tecnologías utilizadas Android, Java (EJB, Servlets, Faces, Groovy & Grails, Maven, Swing), .Net (C#, VB, ASP, MVC), Delphi, Spring, Hibernate, DTSx, Oracle, T-SQL, Firebird, MySQL, MongoDB, NodeJs, ReactJs (Flux). Sistemas Operativos Mac, Ubuntu y Windows.
