android - View's getWidth() and getHeight() returning 0 -


i have looked @ similar questions , tried solutions did not work me. try take width of imageview, returns 0. here code:

public class mainactivity extends activity { private imageview image1;    float centerx,centery; private imageview image2; private boolean isfirstimage = true;  @override public void oncreate(bundle savedinstancestate) {      super.oncreate(savedinstancestate);     setcontentview(r.layout.rotate);     image1 = (imageview) findviewbyid(r.id.imageview01);     image2 = (imageview) findviewbyid(r.id.imageview02);     image2.setvisibility(view.gone);      if (isfirstimage) {         applyrotation(0, 90);         isfirstimage = !isfirstimage;     }    }     private void applyrotation(float start, float end) {               centerx=image1.getwidth()/2.0f;     centery=image1.getheight()/2.0f;     final flip3danimation rotation =      new flip3danimation(start, end,centerx , centery);     rotation.setduration(500);     rotation.setfillafter(true);     rotation.setinterpolator(new accelerateinterpolator());     rotation.setanimationlistener(new displaynextview(isfirstimage, image1,             image2));      if (isfirstimage)     {         image1.startanimation(rotation);     } else {         image2.startanimation(rotation);     } } }

can me this? thanks

you need use onsizechanged() method.

this called during layout when size of view has changed


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