Basically, I am trying to run a seconds counter and a levels counter. For every 10 seconds I want to ++level.
But that's not implemented as yet, so far I am just trying to get the seconds to display but I am getting runtime exceptions and a crash.
Googling I see that its because I am trying to update the UI from my thread and thats not allowed.
So I guess I am going to need asyncTask, but I have no idea how to do that with my simple little program. Please help or give me some alternatives...
package com.ryan1;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;
public class main extends Activity {
int level = 1;
int seconds_running=0;
TextView the_seconds;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
the_seconds = (TextView) findViewById(R.id.textview_seconds);
Thread thread1 = new Thread(){
public void run(){
try {
sleep(1000); Log.d("RYAN", " RYAN ");
updated_secs();
} catch (Exception e) {
e.printStackTrace();
Log.d("RYAN", " "+e);
}
}
};
thread1.start();
}
public void updated_secs(){
seconds_running++;
the_seconds.setText(" "+seconds_running);
}
}
Create a Handler in your UI thread, then in the worker thread send a message to the handler (Handler.sendMessage(...)).
The message will be processed on your UI thread, so you can update the text widget correctly. Like this:
private Handler myUIHandler = new Handler()
{
@Override
public void handleMessage(Message msg)
{
if (msg.what == some_id_you_created)
{
//Update UI here...
}
}
};
Then in your thread, to send a message to the handler you do this:
Message theMessage = myHandler.obtainMessage(some_id_you_created);
myUIHandler.sendMessage(theMessage);//Sends the message to the UI handler.