Application Level onResume Android

Question

Problem

The idea is very simple. Whenever an user comes back to my app from the Recents I want to show a simple dialog prompting with the password.<

Answer 1

Try below sample

    /**
 * TODO : After update to API level 14 (Android 4.0),
 * We should implement Application.ActivityLifecycleCallbacks
 */
public class GlobalApplication extends android.app.Application
{
    private boolean inForeground = true;
    private int resumed = 0;
    private int paused = 0;

    public void onActivityResumed( Activity activity )
    {
        ++resumed;

        if( !inForeground )
        {
            // Don't check for foreground or background right away
            // finishing an activity and starting a new one will trigger to many
            // foreground <---> background switches
            //
            // In half a second call foregroundOrBackground
        }
    }

    public void onActivityPaused( Activity activity )
    {
        ++paused;

        if( inForeground )
        {
            // Don't check for foreground or background right away
            // finishing an activity and starting a new one will trigger to many
            // foreground <---> background switches
            //
            // In half a second call foregroundOrBackground
        }
    }

    public void foregroundOrBackground()
    {
        if( paused >= resumed && inForeground )
        {
            inForeground = false;
        }
        else if( resumed > paused && !inForeground )
        {
            inForeground = true;
        }
    }
}

Put below code in your all activities.

  public class BaseActivity extends android.app.Activity
{
    private GlobalApplication globalApplication;

    @Override
    protected void onCreate()
    {
        globalApplication = (GlobalApplication) getApplication();
    }

    @Override
    protected void onResume()
    {
        super.onResume();
        globalApplication.onActivityResumed(this);
    }

    @Override
    protected void onPause()
    {
        super.onPause();
        globalApplication.onActivityPaused(this);
    }

    @Override
    public void onDestroy()
    {
        super.onDestroy();
    }
}