When has the Activity finished drawing itself?

Question

This maybe somewhat of a strange question but I just can`t figure it out. Basically I have a class that extends View and overrides the onDraw method so it draws a bitmap wha

Answer 1

Override method onWindowFocusChanged() in Activity. This is where you can be sure that views have been drawn. You can start obtaining the dimension/ position of the views in this method. For eg. customView.getLeft(), etc.

Answer 2

Well, if you instantiate the class that extends the View in your onCreate, that should work.

Take a look at this example:

@Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // Set full screen view
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                                     WindowManager.LayoutParams.FLAG_FULLSCREEN);
    requestWindowFeature(Window.FEATURE_NO_TITLE);

    customView = new CustomView(this);
    setContentView(customView);
    customView.requestFocus();
  }