Re: [android-developers] how to stop a progressbar which is runs using a thread?

Hi gaurav,

use setProgress(0), setMax(0) or whatever suits you. But please, do NOT use threads like that unless you really know what you are doing. Why don't you use for example AsyncTask to do all the threading work? You just initiate it, start the music playback in it and update the ProgressBar, then you just simply cancel the task, stop playing the music and reset the ProgressBar in onFinish / onCancelled.

Best regards,

Filip Havlicek

2011/3/23 gaurav gupta <gaurav.gupta188@gmail.com>

Hi Laxmi, m using progress bar.,

=================================

 ProgressBar progressbar;

progressbar=(ProgressBar)findViewById(R.id.progressbar);

============================================
in this progressBar.setsetCanceleable(true)  is not wroking

it works with progressDialog.

i also need to stop my thread. my thread is not stopping too.

suggest me

Thanks

On Wed, Mar 23, 2011 at 12:05 PM, Laxmi Verma <laxmiverma.android@gmail.com> wrote:

Hi Gaurav,

Just set the property progressBar.setCanceleable(true) and call the method progressBar.cancel() while stopping the thread.  It will stop the progress bar.

Hope it helps....

Thanks!!

On Wed, Mar 23, 2011 at 11:39 AM, gaurav gupta <gaurav.gupta188@gmail.com> wrote:

hi guys,

in my application, m using a progrssbar that show the current progress of a song.i need to stop the song as well as progressbar too. progressbar should be reach at starting point and song should be stop.

 

class

myThread extends Thread implements Runnable{ private volatile boolean paused = false; private volatile boolean finished = false; @Override public void run()

{

while(!finished){ while (myProgress<100){ try{

Log.d(

TAG, "Thread Starts"); myProgress++;

Log.d(

"++++++++++++++++++++++",""+myProgress); seekbar.setProgress(myProgress);

Thread.sleep(Long.parseLong(

bundleDuration)/100);

Log.d(

TAG,"Passed thread.sleep");

}

catch(Throwable t){

Log.e(

"+++++++++++++++++++++++++++", "no duration");

}

while(paused && !finished){ try{

Thread.sleep(1000);

//Busy wait - should really use wait/notify, but that's another lesson

}

catch(InterruptedException e){

}

}

}

}

}

===============================================================================================

m using a button stopbutton to stop this song which runs through a service

 

case

R.id.buttonStop:

Log.d(

TAG, "onClick: stopping srvice");

stopService(

new Intent(this, MyService.class)); if(mt.isAlive())

{

mt.stopThread();// mt is the object of myThread class

}

=================================

StopThread function

public synchronized void stopThread(){ if(mt != null){

Thread mthread =

mt; mt = null;

mth dread.interrupt(); } }

===========================================

please suggest me what to do??

my progressbar's thread should be finished and its setduration must be zero.

now its giving this in logcat and thread is continue in background

03-23 11:35:16.070: ERROR/AndroidRuntime(276): FATAL EXCEPTION: main
03-23 11:35:16.070: ERROR/AndroidRuntime(276): java.lang.NullPointerException
03-23 11:35:16.070: ERROR/AndroidRuntime(276):     at com.gaurav.music.activity.AudioPlayerScreen.onClick(AudioPlayerScreen.java:190)
03-23 11:35:16.070: ERROR/AndroidRuntime(276):     at android.view.View.performClick(View.java:2408)
03-23 11:35:16.070: ERROR/AndroidRuntime(276):     at android.view.View$PerformClick.run(View.java:8816)
03-23 11:35:16.070: ERROR/AndroidRuntime(276):     at android.os.Handler.handleCallback(Handler.java:587)
03-23 11:35:16.070: ERROR/AndroidRuntime(276):     at android.os.Handler.dispatchMessage(Handler.java:92)
03-23 11:35:16.070: ERROR/AndroidRuntime(276):     at android.os.Looper.loop(Looper.java:123)
03-23 11:35:16.070: ERROR/AndroidRuntime(276):     at android.app.ActivityThread.main(ActivityThread.java:4627)
03-23 11:35:16.070: ERROR/AndroidRuntime(276):     at java.lang.reflect.Method.invokeNative(Native Method)
03-23 11:35:16.070: ERROR/AndroidRuntime(276):     at java.lang.reflect.Method.invoke(Method.java:521)
03-23 11:35:16.070: ERROR/AndroidRuntime(276):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
03-23 11:35:16.070: ERROR/AndroidRuntime(276):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
03-23 11:35:16.070: ERROR/AndroidRuntime(276):     at dalvik.system.NativeStart.main(Native Method)
03-23 11:35:16.180: WARN/ActivityManager(59):   Force finishing activity com.hungama.myplay.activity/.AudioPlayerScreen
03-23 11:35:16.764: DEBUG/AudioPlayerScreen(276): Passed thread.sleep

============================================

please help

thanks in advance

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