How to remove v7 toolbar back button [closed]

问题:

I need to delete this v7 toolbar from my activity:

Please Help me !

回答1:

If you are using v7 Toolbar you can remove this button with this code :

if (getSupportActionBar() != null) {
    ActionBar actionBar = getSupportActionBar();
    actionBar.setDisplayHomeAsUpEnabled(false);
}

you can read android here and here for more information. also this question may help