You are sending the same messages into the handler while they are still
being dispatched. Each message you send needs to be a new one you obtain.
On Wed, Feb 2, 2011 at 8:16 PM, yogi <yogi.ru...@gmail.com> wrote:
> Hi all,
> I have created to thread in an application, and from these threads i
> am sending a value.
> But the App has started but after 5-6 seconds it crashes and with the
> following log error.
>
>
> 02-03 09:40:19.598: ERROR/AndroidRuntime(1684): FATAL EXCEPTION: main
> 02-03 09:40:19.598: ERROR/AndroidRuntime(1684):
> android.util.AndroidRuntimeException: { what=1000 when=2469427 obj=4 }
> This message is already in use.
> 02-03 09:40:19.598: ERROR/AndroidRuntime(1684): at
> android.os.MessageQueue.enqueueMessage(MessageQueue.java:171)
> 02-03 09:40:19.598: ERROR/AndroidRuntime(1684): at
> android.os.Handler.sendMessageAtTime(Handler.java:457)
> 02-03 09:40:19.598: ERROR/AndroidRuntime(1684): at
> android.os.Handler.sendMessageDelayed(Handler.java:430)
> 02-03 09:40:19.598: ERROR/AndroidRuntime(1684): at
> android.os.Handler.sendEmptyMessageDelayed(Handler.java:394)
> 02-03 09:40:19.598: ERROR/AndroidRuntime(1684): at
> android.os.Handler.sendEmptyMessage(Handler.java:379)
> 02-03 09:40:19.598: ERROR/AndroidRuntime(1684): at
> android.view.ViewRoot.scheduleTraversals(ViewRoot.java:652)
> 02-03 09:40:19.598: ERROR/AndroidRuntime(1684): at
> android.view.ViewRoot.requestLayout(ViewRoot.java:596)
> 02-03 09:40:19.598: ERROR/AndroidRuntime(1684): at
> android.view.View.requestLayout(View.java:8125)
> 02-03 09:40:19.598: ERROR/AndroidRuntime(1684): at
> android.view.View.requestLayout(View.java:8125)
> 02-03 09:40:19.598: ERROR/AndroidRuntime(1684): at
> android.view.View.requestLayout(View.java:8125)
> 02-03 09:40:19.598: ERROR/AndroidRuntime(1684): at
> android.view.View.requestLayout(View.java:8125)
> 02-03 09:40:19.598: ERROR/AndroidRuntime(1684): at
> android.view.View.requestLayout(View.java:8125)
> 02-03 09:40:19.598: ERROR/AndroidRuntime(1684): at
> android.widget.TextView.checkForRelayout(TextView.java:5378)
> 02-03 09:40:19.598: ERROR/AndroidRuntime(1684): at
> android.widget.TextView.setText(TextView.java:2688)
> 02-03 09:40:19.598: ERROR/AndroidRuntime(1684): at
> android.widget.TextView.setText(TextView.java:2556)
> 02-03 09:40:19.598: ERROR/AndroidRuntime(1684): at
> android.widget.TextView.setText(TextView.java:2531)
> 02-03 09:40:19.598: ERROR/AndroidRuntime(1684): at
> com.demo.app.handlerapp$3.handleMessage(handlerapp.java:95)
> 02-03 09:40:19.598: ERROR/AndroidRuntime(1684): at
> android.os.Handler.dispatchMessage(Handler.java:99)
>
> Please refer to the following code which i have written.
>
> package com.demo.app;
>
> import android.app.Activity;
> import android.os.Bundle;
> import android.os.Handler;
> import android.os.Message;
> import android.view.View;
> import android.view.View.OnClickListener;
> import android.widget.Button;
> import android.widget.TextView;
> import android.widget.Toast;
>
> public class handlerapp extends Activity implements OnClickListener{
> /** Called when the activity is first created. */
> @Override
> public void onCreate(Bundle savedInstanceState) {
> super.onCreate(savedInstanceState);
> setContentView(R.layout.main);
> button=(Button)findViewById(R.id.Button01);
> tw=(TextView)findViewById(R.id.TextView01);
> tw.setText("click button to start");
> button.setOnClickListener(this);
> }
> @Override
> public void onClick(View v) {
> // TODO Auto-generated method stub
> switch(v.getId()){
> case R.id.Button01:
> Toast.makeText(getApplicationContext(), "clicked",
> 2).show();
> if(!th.isAlive())
> th.start();
> if(!th1.isAlive())
> th1.start();
> break;
> }
>
> }
> Thread th= new Thread(new Runnable(){
>
> @Override
> public void run() {
> // TODO Auto-generated method stub
> Message msg= handler.obtainMessage();
> for(int i=2;i<1000;i++)
> {
> try {
> Thread.sleep(5000);
> } catch (InterruptedException e) {
> // TODO Auto-generated catch block
> e.printStackTrace();
> }
> msg.obj= i;
> msg.what=2;
> handler.sendMessage(msg);
> }
>
> }
>
> });
> Thread th1= new Thread(new Runnable(){
> @Override
> public void run() {
> // TODO Auto-generated method stub
> Message msg= handler.obtainMessage();
> for(int i=2;i<1000;i++)
> {
> try {
> Thread.sleep(3000);
> } catch (InterruptedException e) {
> // TODO Auto-generated catch block
> e.printStackTrace();
> }
> msg.obj= i;
> msg.what=1;
> handler.sendMessage(msg);
> }
>
> }
>
> });
>
> Handler handler = new Handler(){
> @Override
> public void handleMessage(Message msg) {
> // TODO Auto-generated method stub
> super.handleMessage(msg);
> switch(msg.what){
> case 1:
> Toast.makeText(getApplicationContext(),
> msg.obj.toString(),
> 1).show();
> break;
> case 2:
>
> tw.setText(msg.obj.toString());
> removeMessages(msg.what, msg.obj);
> break;
> }
> }
>
> };
>
>
> Button button;
> TextView tw;
> }
>
>
>
> Thanks in Advance
> Regards
> Yogi
>
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--
Dianne Hackborn
Android framework engineer
hack...@android.com
Note: please don't send private questions to me, as I don't have time to
provide private support, and so won't reply to such e-mails. All such
questions should be posted on public forums, where I and others can see and
answer them.
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