android - ImageButton Based On If Condition -


i have implemented imagebutton changes images based on 3 conditions, 1 of condition set follows:

if (local().equals(remote)) {     ib.setimageresource(r.drawable.sync_green); } else {     ib.setimageresource(r.drawable.sync_red); }

this works after few seconds app crashes following log:

06-20 11:58:27.734: e/androidruntime(2278): fatal exception: thread-160 06-20 11:58:27.734: e/androidruntime(2278): process: com.twostarii.asyncdownload, pid: 2278 06-20 11:58:27.734: e/androidruntime(2278): android.view.viewrootimpl$calledfromwrongthreadexception: original thread created view hierarchy can touch views. 06-20 11:58:27.734: e/androidruntime(2278):     @ android.view.viewrootimpl.checkthread(viewrootimpl.java:6247) 06-20 11:58:27.734: e/androidruntime(2278):     @ android.view.viewrootimpl.invalidatechildinparent(viewrootimpl.java:902) 06-20 11:58:27.734: e/androidruntime(2278):     @ android.view.viewgroup.invalidatechild(viewgroup.java:4637) 06-20 11:58:27.734: e/androidruntime(2278):     @ android.view.view.invalidateinternal(view.java:11690) 06-20 11:58:27.734: e/androidruntime(2278):     @ android.view.view.invalidate(view.java:11654) 06-20 11:58:27.734: e/androidruntime(2278):     @ android.view.view.invalidate(view.java:11638) 06-20 11:58:27.734: e/androidruntime(2278):     @ android.widget.imageview.setimageresource(imageview.java:402) 06-20 11:58:27.734: e/androidruntime(2278):     @ com.twostarii.asyncdownload.androiddownloadfilebyprogressbaractivity$1.run(androiddownloadfilebyprogressbaractivity.java:172)

you can't change drawable because not on main ui thread.

try doing this:

runonuithread(new runnable() {             @override             public void run() {                  // code here run on ui thread             }         });

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