Android 基础控件学习--Timer

Android 基础控件学习--Timer

package net.blogjava.mobile;

import java.util.Timer;
import java.util.TimerTask;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.widget.ProgressBar;

public class Main extends Activity
{

private ProgressBar progressBar;

private Handler handler = new Handler()
{

public void handleMessage(Message msg)
{
switch (msg.what)
{
case 1:
int currentProgress = progressBar.getProgress() + 2;
if (currentProgress > progressBar.getMax())
currentProgress = 0;
progressBar.setProgress(currentProgress);
break;
}
super.handleMessage(msg);
}

};
private TimerTask timerTask = new TimerTask()
{

public void run()
{
Message message = new Message();
message.what = 1;
handler.sendMessage(message);
}

};

@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
progressBar = (ProgressBar) findViewById(R.id.progressbar);
Timer timer = new Timer();
timer.schedule(timerTask, 0, 500);

}
}