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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