CODEWITHSUNDEEP
androidandroid-dialog
Gaurav Agarwal
Gaurav Agarwal

Reputation: 19102

ProgressDialog in a separate Thread gives **Uncaught remote exception!**

I have implemented a ProgressDialog in a new thread.

Code in onCreate

progressDialog = new ProgressDialog(this);
progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
progressDialog.setMessage("Verifying...");
progressDialog.setCancelable(true);
progressDialog.show();

t.start();

Thread declaration

Runnable r = new MyRunnable();
Thread t = new Thread(r);

Runnable

public class MyRunnable implements Runnable {

        @Override
        public void run() {
            Message msg = Message.obtain();
            if (t.isInterrupted()) {
                msg.recycle();
                return;
            }

            long startTime = SystemClock.elapsedRealtime();
            long duration = 5 * 60 * 1000; // 5 min
            long percentageIntervalDuration = 2;
            long interval = (duration * percentageIntervalDuration) / 100; // 6sec
            int i = 0;
            do {
                if (SystemClock.elapsedRealtime() == (startTime + (i * interval))) {
                    msg.arg1 = (int) percentageIntervalDuration * i;
                    mainHandler.sendMessage(msg);
                    i++;

                }
            } while (i != (100 / percentageIntervalDuration) + 1);
        }
    }

Handler attached to Main Thread

Handler mainHandler = new Handler() {
public void handleMessage(Message msg) {
Log.d(TAG, String.valueOf(msg.arg1));
if (msg.arg1 == 100) {
        progressDialog.dismiss();
        } else {
            progressDialog.setProgress(msg.arg1);
               }
        }
    };

Now I am facing two problems

1. The following error messages appear in Logcat when ProgressDialog is dismissed

05-09 17:57:36.386: E/JavaBinder(9822): *** Uncaught remote exception!  (Exceptions are not yet supported across processes.)
05-09 17:57:36.386: E/JavaBinder(9822): android.util.AndroidRuntimeException: { what=4 when=650507787 arg1=1 } This message is already in use.
05-09 17:57:36.386: E/JavaBinder(9822):   at android.os.MessageQueue.enqueueMessage(MessageQueue.java:171)
05-09 17:57:36.386: E/JavaBinder(9822):   at android.os.Handler.sendMessageAtTime(Handler.java:457)
05-09 17:57:36.386: E/JavaBinder(9822):   at android.os.Handler.sendMessageDelayed(Handler.java:430)
05-09 17:57:36.386: E/JavaBinder(9822):   at android.os.Handler.sendMessage(Handler.java:367)
05-09 17:57:36.386: E/JavaBinder(9822):   at android.view.inputmethod.InputMethodManager$1.setActive(InputMethodManager.java:428)
05-09 17:57:36.386: E/JavaBinder(9822):   at com.android.internal.view.IInputMethodClient$Stub.onTransact(IInputMethodClient.java:83)
05-09 17:57:36.386: E/JavaBinder(9822):   at android.os.Binder.execTransact(Binder.java:288)
05-09 17:57:36.386: E/JavaBinder(9822):   at dalvik.system.NativeStart.run(Native Method)
05-09 17:57:36.386: E/JavaBinder(9822): *** Uncaught remote exception!  (Exceptions are not yet supported across processes.)
05-09 17:57:36.386: E/JavaBinder(9822): android.util.AndroidRuntimeException: { what=100 when=650507787 } This message is already in use.
05-09 17:57:36.386: E/JavaBinder(9822):   at android.os.MessageQueue.enqueueMessage(MessageQueue.java:171)
05-09 17:57:36.386: E/JavaBinder(9822):   at android.os.Handler.sendMessageAtTime(Handler.java:457)
05-09 17:57:36.386: E/JavaBinder(9822):   at android.os.Handler.sendMessageDelayed(Handler.java:430)
05-09 17:57:36.386: E/JavaBinder(9822):   at android.os.Handler.sendMessage(Handler.java:367)
05-09 17:57:36.386: E/JavaBinder(9822):   at com.android.internal.view.IInputConnectionWrapper.dispatchMessage(IInputConnectionWrapper.java:182)
05-09 17:57:36.386: E/JavaBinder(9822):   at com.android.internal.view.IInputConnectionWrapper.reportFullscreenMode(IInputConnectionWrapper.java:159)
05-09 17:57:36.386: E/JavaBinder(9822):   at com.android.internal.view.IInputContext$Stub.onTransact(IInputContext.java:211)
05-09 17:57:36.386: E/JavaBinder(9822):   at android.os.Binder.execTransact(Binder.java:288)
05-09 17:57:36.386: E/JavaBinder(9822):   at dalvik.system.NativeStart.run(Native Method)

2. ProgressDialog freezes sometimes at a particular percentage.

Upvotes: 1

Views: 2368

Answers (1)

Gophermofur
Gophermofur

Reputation: 2101

From this previous question, it looks like you may need to create a new Message object every time. Android Handler Message and ListView

Also, this discussion seems to point to Message.clearForRecycle() not being called? http://code.google.com/p/android/issues/detail?id=3318

That said, why not use an AsyncTask? It's pretty much geared for Background Tasks + Publishing to the UI thread and works really well with Progress Dialogs. It has pre-built methods for executing code before and after the main background threaded work is run and it has the capability to publish progress updates to the UI with all the handler stuff nicely hidden for you.

http://androidresearch.wordpress.com/2012/03/17/understanding-asynctask-once-and-forever/

http://www.android10.org/index.php/forums/43-view-layout-a-resource/908-tutorial-progressbar-running-in-asynctask

http://www.vogella.com/articles/AndroidPerformance/article.html#asynctask

Upvotes: 2

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