need help in getting screen coordinates of a view

by kavitha » Mon, 23 Mar 2009 08:04:46 GMT


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 Hii All,

I am developing a game in android and i want to capture screen
coordinates of a view(ImageView) which is embedded in frame.

Hierarchy is
<LinearLayout android android:layout_height="fill_parent"
android:layout_width="fill_parent" >
      <RelativeLayout android:layout_height=fill_parent"
android:layout_width="fill_parent" >
            <FrameLayout android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:id="@+id/frame14"></FrameLayout>
    </RelativeLayout>
</LinearLayout>

At run time i am attaching two image views for frame layout.I wanted
to capture screen coordinates of frame layout.But Couldnt do it.if i
say

(FrameLayout) f=(FrameLayout)findViewById(R.id.frame14);
int[] loc = new int[2];
f.getLocationOnScreen(loc);
System.out.println(loc[0]);
System.out.println(loc[1]);

I get Null Pointer Exception for getLocationOnScreen() method.

If I try to get f.getLeft() and f.getRight() they return as 0 coordinates.

Can anyone please tell me how to find location on screen of a view.

It is very urgent.Please help.

Thanks
Kavitha

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