How to change title in AppCompatActivity

Question

I try to change the title of my MainActivity outside the onCreate() method. It seems to work inside onCreate(), but if I try to change it programmatically, it doesn't do anything.

My onCreate:

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    getSupportActionBar().setDisplayShowTitleEnabled(true);
    getSupportActionBar().setTitle(selectedSong);

I already tried outside the onCreate():

 public void updatetitle(String title) {
        toolbar.setTitle(title);
        getSupportActionBar().setTitle(selectedSong);
        ((MainActivity) this).getSupportActionBar().setTitle(selectedSong);
        setTitle(selectedSong); 
}

None of these works. When I debug the code. The code in the toolbar object is updated, but the view isn't refreshed. Any hints? Thanks.

you mean like that: toolbar = (Toolbar) findViewById(R.id.toolbar); toolbar.setTitle(selectedSong); setSupportActionBar(toolbar); — MTwain, Feb 12 '18 at 17:27
Have you tried [set up the title through the Toolbar some time after setting the SupportActionBar](https://stackoverflow.com/a/35430590/3792350) — sakiM, Feb 13 '18 at 02:54

godot · Answer 1 · 2018-02-12T18:21:28.520

0

Write setTitle() on top in onCreate:

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    setTitle(selectedSong); //*
    toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    getSupportActionBar().setDisplayShowTitleEnabled(true);

edited Feb 12 '18 at 18:21

answered Feb 12 '18 at 18:12

godot

3,422
6
25
42

I like to change the title outside onCreate. I am able to set it in onCreate, but later on, I can't updated. – MTwain Feb 12 '18 at 21:53

How to change title in AppCompatActivity

1 Answers1