活动生命周期。 用户始终离线

Question

When the app is running foreground, the online will set to true and when the app is in background, the online will set to false. I have this code in all activity:

    @Override
protected void onStart() {
    super.onStart();
    if (mAuth.getCurrentUser() != null) {
        mUserDatabase.child("online").setValue("true");
    }
}

@Override
protected void onStop() {
    super.onStop();
    if (mAuth.getCurrentUser() != null) {
        mUserDatabase.child("online").setValue("false");
    }
}

The problem is when I try to move to another activity the online is always set to false. Why is it always false?

Answer 1

When app is paused ( say minimised by pressing home button ) onPause method should be triggered and when you opens it again it should trigger onPostResume method

---

Your code should look like below :

@Override
protected void onPause()
{
    super.onPause();

    // set false

}



@Override
protected void onPostResume()
{
    super.onPostResume();

    // set true

}

Hope it helps you