Android APP front and backstage status switch

getActivity().getApplication().registerActivityLifecycleCallbacks(new Application.ActivityLifecycleCallbacks() {

@Override
public void onActivityCreated(Activity activity, Bundle bundle) {

}

@Override
public void onActivityStarted(Activity activity) {
//Instructions returned from the background to the foreground

}

@Override
public void onActivityResumed(Activity activity) {

}

@Override
public void onActivityPaused(Activity activity) {

}

@Override
public void onActivityStopped(Activity activity) {
        
//Enter the background


}

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

}

@Override
public void onActivityDestroyed(Activity activity) {

}
});

Used in the onCreate() method in the Activity to be called

getActivity().getApplication().registerActivityLifecycleCallbacks(new Application.ActivityLifecycleCallbacks() {

@Override
public void onActivityCreated(Activity activity, Bundle bundle) {

}

@Override
public void onActivityStarted(Activity activity) {
//Instructions returned from the background to the foreground

}

@Override
public void onActivityResumed(Activity activity) {

}

@Override
public void onActivityPaused(Activity activity) {

}

@Override
public void onActivityStopped(Activity activity) {
        
//Enter the background


}

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

}

@Override
public void onActivityDestroyed(Activity activity) {

}
});

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