android - Moving the image according to the Button click -


i used 4 buttons (up,down,left,right) , have image. have move image accordingly when press button should move image in upward direction , when press left remaining both direction should move image in left direction.i have used onclick listener , trying move image using x,y co-ordinates.i don't how take x,y co-ordinates.

here code. 

public class mainactivity extends activity implements onclicklistener {      button up,left,right,down;            imageview i1;      protected void oncreate(bundle savedinstancestate) {                   super.oncreate(savedinstancestate);                  setcontentview(r.layout.activity_main);              up=(button)findviewbyid(r.id.button1);              left=(button)findviewbyid(r.id.button2);              right=(button)findviewbyid(r.id.button3);              down=(button)findviewbyid(r.id.button4);              i1=(imageview)findviewbyid(r.id.imageview1);              up.setonclicklistener(this);      }          public void onclick(view arg0) {      toast.maketext(getapplication(),"up",5000).show();            relativelayout.layoutparams mparams = (relativelayout.layoutparams)           i1.getlayoutparams();          int x = (int)getrawx();          int y = (int)getrawy();          mparams.leftmargin = x-50;          mparams.topmargin = y-50;         i1.setlayoutparams(mparams);       }  }

hi, have updated code below please check it.

package com.example.motion;

public class mainactivity extends activity implements onclicklistener {  button up,left,right,down;  imageview i1;  protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);     up=(button)findviewbyid(r.id.button1);     left=(button)findviewbyid(r.id.button2);     right=(button)findviewbyid(r.id.button3);     down=(button)findviewbyid(r.id.button4);     i1=(imageview)findviewbyid(r.id.imageview1);     up.setonclicklistener(this);     down.setonclicklistener(this);     left.setonclicklistener(this);     right.setonclicklistener(this); }    public void onclick(view v) {     // todo auto-generated method stub     switch(v.getid())     {     case r.id.button1:         {         toast.maketext(getapplication(),"up",toast.length_short).show();     relativelayout.layoutparams mparams = (relativelayout.layoutparams)          i1.getlayoutparams();         mparams.topmargin -= 20;         i1.setlayoutparams(mparams);         break;         }       case r.id.button4:            {         toast.maketext(getapplication(),"down",toast.length_short).show();             relativelayout.layoutparams mparams = (relativelayout.layoutparams)                  i1.getlayoutparams();                 mparams.topmargin += 20;                 i1.setlayoutparams(mparams);                 break;             }       case r.id.button2:                {         toast.maketext(getapplication(),"left",toast.length_short).show();                       relativelayout.layoutparams mparams = (relativelayout.layoutparams)                  i1.getlayoutparams();                 mparams.leftmargin -= 20;                 i1.setlayoutparams(mparams);                     break;                  }      case r.id.button3:                {         toast.maketext(getapplication(),"right",toast.length_short).show();           relativelayout.layoutparams mparams = (relativelayout.layoutparams)              i1.getlayoutparams();             mparams.leftmargin += 20;             i1.setlayoutparams(mparams);             break;                }   }     }  }

i think problem (int)getrawx(); , (int)getrawy();, calling methods on activity , i'm not sure need values.

you try:

mparams.leftmargin += 50;

or

int x = mparams.leftmargin; mparams.leftmargin = x + 50

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