Execute function after 5 seconds in Android

Question

I am new in android development and now my launcher activity show only 5 seconds and after that I want to check the user is logged in or not function and perform the actions

Answer 1

When possible, try to avoid using postDelayed. It is a bad practice, since it can lose the reference to the objects that you want to draw on your screen and cause a NPE. Use a Handler instead. First of all, create a global variable Handler in which you will have to "handle" the logic for your code. Do so by using the function handleMessage.

Handler  handler = new Handler(){
    @Override
    public void handleMessage(Message msg) {
        if(msg.what == 1){
            // your code here
        }
    }
};       

Then, wherever you want to execute it, just call the function:

// 1 is the ID of your process
handler.sendEmptyMessageDelayed(1, 5000);

Please remember that in the onDestroyView method (in a Fragment) or the onDestroy (in an Activity) you will have to call

    handler.removeMessages(1)