java - How to move right, left,top and bottom for zoom Image in android? -


i uploading image in screen. there have zoom-in zoom-out buttons. have done zoom-in , zoom-out functions. working fine. need is, want drag , see image completely. happens is, image not moving. have 4 butons here. leftbutton,rightbutton,topbutton , bottombutton. if click 'leftbutton', image should move left side. other functions. not having idea, need write inside button clicks. please guide me this? appreciated..

here code:

selectedpicture imagelayout

case r.id.zoominctrl:     float x = selectedpicture.getscalex();     float y = selectedpicture.getscaley();      selectedpicture.setscalex((float) (x + 0.5));     selectedpicture.setscaley((float) (y + 0.5));      return true; case r.id.zoomoutctrl:     x = selectedpicture.getscalex();     y = selectedpicture.getscaley();      selectedpicture.setscalex((float) (x - 0.5));     selectedpicture.setscaley((float) (y - 0.5));      return true; case r.id.leftctrl:     /* code move left */     return true; case r.id.rightctrl:     /* code move right */     return true; case r.id.topctrl:     /* code move top */     return true; case r.id.bottomctrl:     /* code move bottom */     return true;

i think settranslationx , settranslationy methods of view best fit want.


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