public class MyApplication extends Application {
@Override
public void onCreate() {
super.onCreate();
// your stuff here
// Manage firebase database connection when in background and foreground
registerActivityLifecycleCallbacks(new FirebaseDatabaseConnectionHandler());
}
}
import android.app.Activity;
import android.app.Application;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import com.google.firebase.database.FirebaseDatabase;
public class FirebaseDatabaseConnectionHandler implements Application.ActivityLifecycleCallbacks {
private static final String TAG = FirebaseDatabaseConnectionHandler.class.getSimpleName();
private int count = 0;
private final long delayedTimeMillis = 5000; // change this if you want different timeout
private Handler mHandler = new Handler();
@Override
public void onActivityCreated(Activity activity, Bundle bundle) {
}
@Override
public void onActivityStarted(Activity activity) {
count++;
Log.d(TAG, "onActivityStarted: count=" + count);
if (count > 0)
FirebaseDatabase.getInstance().goOnline();
}
@Override
public void onActivityResumed(Activity activity) {
}
@Override
public void onActivityPaused(Activity activity) {
}
@Override
public void onActivityStopped(Activity activity) {
count--;
Log.d(TAG, "onActivityStopped: count=" + count);
if (count == 0) {
Log.d(TAG, "onActivityStopped: going offline in 5 seconds..");
mHandler.postDelayed(new Runnable() {
@Override
public void run() {
// just make sure that in the defined seconds no other activity is brought to front
Log.d(TAG, "run: confirming if it is safe to go offline. Activity count: " + count);
if (count == 0) {
Log.d(TAG, "run: going offline...");
FirebaseDatabase.getInstance().goOffline();
} else {
Log.d(TAG, "run: Not going offline..");
}
}
}, delayedTimeMillis);
}
}
@Override
public void onActivitySaveInstanceState(Activity activity, Bundle bundle) {
}
@Override
public void onActivityDestroyed(Activity activity) {
}
}