I don't know what firmware it is but when I updated my app today I got
tons of error mails from different types of devices so it must be a
popular one.
On Apr 20, 4:17 pm, Kostya Vasilyev <kmans...@gmail.com> wrote:
> Have you looked at Android's own Power Controls widget? It's part of
> Settings application.
>
> Also, is it possible you're dealing with some heavily modified, buggy
> firmware?
> 20.04.2011 18:00 пользователь "b_t" <bartata...@gmail.com> написал:> The
> original stack trace is:
>
> > Caused by: java.lang.RuntimeException: Can't create handler inside
> > thread that has not called Looper.prepare()
> > at android.os.Handler.<init>(Handler.java:121)
> > at android.bluetooth.BluetoothAdapter
> > $1.<init>(BluetoothAdapter.java:961)
> > at
> > android.bluetooth.BluetoothAdapter.<init>(BluetoothAdapter.java:961)
> > at
>
> android.bluetooth.BluetoothAdapter.getDefaultAdapter(BluetoothAdapter.java:
>
>
>
> > 308)
> > *** myTask.doInBackground() ***
> > at android.os.AsyncTask$2.call(AsyncTask.java:185)
> > at java.util.concurrent.FutureTask
> > $Sync.innerRun(FutureTask.java:305)
> > at java.util.concurrent.FutureTask.run(FutureTask.java:137)
> > at
> > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:
> > 1068)
> > at java.util.concurrent.ThreadPoolExecutor
> > $Worker.run(ThreadPoolExecutor.java:561)
> > at java.lang.Thread.run(Thread.java:1102)
>
> > I try to explain what I want:
>
> > - I have an appwidget with a bluetooth toggle
> > - If the bluetooth state changes the appwidget will be updated
> > - If I click on the appwidget than I toggle bluetooth state
>
> > If I click on the toggle:
>
> > - an IntentService will be executed
> > - it creates a Handler and displays a toast by Handler.post() with the
> > message "turning off..."
> > - I change bluetooth state
> > - bluetooth state changes so my broadcast receiver tries to update
> > appwidget
>
> > If I update appwidget in a service than everything is ok except that
> > APN can occur if the
> > update process is slow for some reason.
>
> > I would like to put appwidget update mechanism into an AsyncTask.
> > But because of BluetoothAdapter.getDefaultAdapter creates a Handler
> > (in some roms) it throws
> > the exception above.
>
> > If I put Looper.prepare() in the begin of doInBackground, then the
> > following error occurs
> > for a thread (there are five asynctask thread in my device so it
> > happens very early)
>
> > java.lang.RuntimeException: Only one Looper may be created per
> > thread
>
> > If I use the following code:
>
> > Looper myLooper = Looper.myLooper();
> > if (myLooper == null) {
> > Looper.prepare();
> > }
>
> > than everything seems fine except one thing: to toast I would like to
> > display
> > in the beginning of the process will be displayed much time later.
>
> > I don't know why and how can I avoid it.
>
> > I hope somebody understand my problem and can give me a solution.
>
> > T.
>
> > On Apr 20, 10:17 am, Kostya Vasilyev <kmans...@gmail.com> wrote:
> >> You could try calling Looper.prepare() first thing in doInBackground().
>
> >> Oh, and logcat output would help us help you, as usual.
>
> >> -- Kostya
>
> >> 20.04.2011 12:07, b_t пишет:
>
> >> > Hi,
>
> >> > In my app I was going to use an AsyncTask to update appwidget data
> >> > because this process can be long. To get the state I have to call
> >> > BluetoothAdapter.getDefaultAdapter(). The problem is that in some
> >> > device (not in mine) it tries to initialize a Handler and throws
> >> > Exception about
> >> > missing Looper.
>
> >> > I don't know what should I do.
>
> >> --
> >> Kostya Vasilyev --http://kmansoft.wordpress.com
>
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