java - Android: Comparing images in a ImageButton and resource -

i have imagebutton , has background set this:

final imagebutton[][] gridbutton = new imagebutton[5][5]; gridbutton[0][0] = (imagebutton) findviewbyid(r.id.imagebutton1); gridbutton[0][0].setimageresource(buttonicon.l[0]); //buttonicon.l[0] image id resources folder.  gridbutton[0][0].setonclicklistener(new view.onclicklistener() {         buttonicon justanobject = new buttonicon();         @override         public void onclick(view v) {             int newid = justanobject.changeiconid(((bitmapdrawable)gridbutton[0][0].getdrawable()).getbitmap()); //          int newid = justanobject.changeiconid(gridbutton[0][0].getdrawable());             gridbutton[0][0].setimageresource(newid);          }     }); 

in buttonicon class, have method making comparison:

public int changeiconid(bitmap object){     if (object == ((bitmapdrawable) getresources().getdrawable(r.drawable.load0)).getbitmap()){         return r.drawable.load1;     }     else return r.drawable.straight0; } 

all ids refer images in resources folder. i'm not quite sure how approach problem.

thanks.

to compare 2 bitmaps

public boolean equals(bitmap bitmap1, bitmap bitmap2) {     bytebuffer buffer1 = bytebuffer.allocate(bitmap1.getheight() * bitmap1.getrowbytes());     bitmap1.copypixelstobuffer(buffer1);      bytebuffer buffer2 = bytebuffer.allocate(bitmap2.getheight() * bitmap2.getrowbytes());     bitmap2.copypixelstobuffer(buffer2);      return arrays.equals(buffer1.array(), buffer2.array()); } 

*after update *

comparing 2 drawables

bitmap bitmap = ((bitmapdrawable)fdraw).getbitmap(); bitmap bitmap2 = ((bitmapdrawable)sdraw).getbitmap();  if(bitmap == bitmap2)     {         //code blcok     }