Why does location on screen always return 0?

Question

I want to know the position of an image view but its always returns 0 neither the x coordinate or y coordinate. Here is my code

    ImageView credits = (ImageView) v.findViewById(R.id.credits);
    int[] coor = {0,0};
    credits.getLocationOnScreen(coor);
    x = coor[0];
    y = coor[1];

I already use many method such as getTop(), etc. but still its return 0.

Anyone know why? I'm new to android so I really appreciate to any answers.

score 1 · Accepted Answer · edited May 23 '17 at 12:33

1

Are you doing that in the onCreate method ?

If yes, it's too early to check for getLocationOnScreen() in onCreate()

Solution here : https://stackoverflow.com/a/13244091/5392383

edited May 23 '17 at 12:33

Community

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answered Jan 05 '17 at 05:09

Topsy

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yep i got it. i put it in onCreate() before. thanks alot! – kelvin Prayitno Jan 05 '17 at 08:53

score 0 · Answer 2 · edited May 23 '17 at 12:24

0

Are you using this code inside onCreate() method?

After quick search I found THIS POST.

shortly, it sayd onCreate() is too early to use getLocationOnScreen, you should use it in side the method onWindowFocusChanged() when your Activity gains focus.

edited May 23 '17 at 12:24

Community

1
1

answered Jan 05 '17 at 05:04

yotam hadas

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score 0 · Answer 3 · answered Jan 05 '17 at 06:01

0

  credits.post(new Runnable() {
        @Override
        public void run() {
           int[] coor = {0,0};
           credits.getLocationOnScreen(coor);
           x = coor[0];
           y = coor[1]; 
        }
    })

try like this

answered Jan 05 '17 at 06:01

Manthan Patel

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score 0 · Answer 4 · answered Jan 05 '17 at 07:29

Pls try this

  @Override
    protected void onResume() {
        super.onResume();
        ImageView credits = (ImageView) v.findViewById(R.id.credits);
        int[] coor = {0,0};
        credits.getLocationOnScreen(coor);
        x = coor[0];
        y = coor[1];
    }

Why does location on screen always return 0?

4 Answers4