imageView return getWidth zero

Question

My imageView in xml:

<ImageView
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:id="@+id/ivManagePhoto"
                    android:layout_marginTop="10dp"
                    android:layout_marginLeft="10dp"
                    android:layout_marginRight="10dp" />

My code:

    ImageView ivManagePhoto;
    ivManagePhoto = (ImageView)findViewById(R.id.ivManagePhoto);
   double ivw = ivManagePhoto.getWidth();

When i try to get ivManagePhoto.getWidth(); that return 0, but i need to get mathparent size.

@Manishika, screen width size = 480, width imageView = ~400. I need to get this 400 — romanPotapskyi, Oct 16 '15 at 19:49

Volodymyr Yatsykiv · Answer 1 · 2015-10-16T20:10:41.330

1

You can try this:

imageView.post(new Runnable() {
            @Override
            public void run() {
                imageView.getWidth();
            }
        });

or, try this:

ViewTreeObserver viewTreeObserver = rootLayout.getViewTreeObserver();
if (viewTreeObserver.isAlive()) {
  viewTreeObserver.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
    @Override
    public void onGlobalLayout() {
      rootLayout.getViewTreeObserver().removeOnGlobalLayoutListener(this);
      viewWidth = view.getWidth();
    }
  });
}

Hope this code will help you.

edited Oct 16 '15 at 20:10

answered Oct 16 '15 at 19:47

Volodymyr Yatsykiv

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Does not work and to much code to get simple width :/ – romanPotapskyi Oct 16 '15 at 19:58
Size of imageView != screen size. – romanPotapskyi Oct 16 '15 at 20:00
ok.. try to look on answers to this question: http://stackoverflow.com/questions/3591784/getwidth-and-getheight-of-view-returns-0 – Volodymyr Yatsykiv Oct 16 '15 at 20:06

score 0 · Answer 2 · answered Oct 16 '15 at 20:11

You can wait to onwindowfocuschanged event. At this time UI items are already loaded

@Override
public void onWindowFocusChanged(boolean hasFocus) {

    super.onWindowFocusChanged(hasFocus);
    if (hasFocus) {
        //get sizes you want
        Point screen_size=new Point();
        getWindowManager().getDefaultDisplay().getSize(screen_size);
        int width = screen_size.x;
        int height = screen_size.y;
        //...
    }
    //...
}

imageView return getWidth zero

2 Answers2