Question

I want to change layout background dynimically.

Here is the log from the LogCat:

04-10 14:59:55.291: WARN/dalvikvm(263): threadid=15: thread exiting with uncaught exception (group=0x4001b188)
04-10 14:59:55.309: ERROR/AndroidRuntime(263): Uncaught handler: thread Thread-8 exiting due to uncaught exception
04-10 14:59:55.331: ERROR/AndroidRuntime(263): android.view.ViewRoot$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.
04-10 14:59:55.331: ERROR/AndroidRuntime(263):     at android.view.ViewRoot.checkThread(ViewRoot.java:2683)
04-10 14:59:55.331: ERROR/AndroidRuntime(263):     at android.view.ViewRoot.requestLayout(ViewRoot.java:557)
04-10 14:59:55.331: ERROR/AndroidRuntime(263):     at android.view.View.requestLayout(View.java:7918)
04-10 14:59:55.331: ERROR/AndroidRuntime(263):     at android.view.View.requestLayout(View.java:7918)
04-10 14:59:55.331: ERROR/AndroidRuntime(263):     at android.view.View.requestLayout(View.java:7918)
04-10 14:59:55.331: ERROR/AndroidRuntime(263):     at android.view.View.requestLayout(View.java:7918)
04-10 14:59:55.331: ERROR/AndroidRuntime(263):     at android.view.View.setBackgroundDrawable(View.java:7275)
04-10 14:59:55.331: ERROR/AndroidRuntime(263):     at android.view.View.setBackgroundResource(View.java:7188)
04-10 14:59:55.331: ERROR/AndroidRuntime(263):     at walk.me.Splasher$1.run(Splasher.java:35)

walk.me.Splasher$1.run(Splasher.java:35) is this line:  

layout.setBackgroundResource(temp); What should I do?

Answer 1

Use a Handler or run it on the UI thread. A Handler can do this task better.

    runOnUiThread(new Runnable() {
        @Override
        public void run() {
            // TODO Auto-generated method stub

        }
    });