Anr Keydispatchingtimedout Error

ANR keyDispatchingTimedOut error

ANR Error

Activity Not Responding.

Your activity took to long to say to the Android OS 'hey i'm still alive'! (This is what the UI thread does).

http://developer.android.com/guide/practices/design/responsiveness.html

Basically if you make the UI thread do some complex task it's too busy doing your task to tell the OS that it is still 'alive'.

http://android-developers.blogspot.co.uk/2009/05/painless-threading.html

You should move your XML Parsing code to another thread, then use a callback to tell the UI thread you have finished and to do something with the result.

http://developer.android.com/resources/articles/timed-ui-updates.html

Android app: ANR keyDispatchingTimedOut error

get the error message through data/anr/trace.txt from File explorer. And, also put all logical operations and loops into separate threads.

Another ANR keyDispatchingTimedOut error. But i can't figure out why

First of all, where is select(Card card) called?. This is very important to avoid log operations in main UI thread (standard actions performed in activity e.g. onCreate()).
If you accidentally run some loop, or deadlock happend UI will freeze and ANR will be noticed.
Try to use AsyncTask to play the sound and check the time of method execution. Remember that the slower devices needs more time to perform operations.
Ok, now is see where it is called.

ANR keyDispatchingTimedOut in ActivityManager

You can implement your method as

onStart method

@Override
    protected void onStart() {
        // TODO Auto-generated method stub
        super.onStart();

        doLongerTask();
    }

Method which will take long time to do process

private void doLongerTask() {
        final ProgressDialog dialog = ProgressDialog.show(Client.this, "Please wait", "Doing long task...", true);
        dialog.setCancelable(true);
        //dialog = CustomProgressDialog.show(this, "", "");
        new Thread() {
            @Override
            public void run() {
                try{
                    //TODO Write here your method logic
                    sleep(5000);
                } catch (Exception e) {  
                    Log.i("your_app_tag", e.toString());
                    dialog.dismiss();
                } 
                //Dismiss dialog, and notify handler to done this task
                dialog.dismiss();
                longTaskHandler.sendEmptyMessage(0);
           }
       }.start();    
    }

Handler which will handle UI changes after finishing long process.

private Handler longTaskHandler = new Handler() {
        @Override
        public void handleMessage(Message msg) {

            switch(msg.what) {
            case 0:
                //Here you can implement UI code. like if you are using listview
                //then you can refresh listview. 
                break;
            }                           
        }
    };

This is not only one way. Read here to know all possible ways.

Happy coding :)

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