<CODE>
myHandlerActivity.java
<pre name="code" class="java">/*
* 安卓 toast, handler, progressBar, Button实例
* author: Derek Zhu 2012-2-26
*/
package com.derek.myHandler;

import android.app.Activity;
import android.opengl.Visibility;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;

public class myHandlerActivity extends Activity {

private Button startButton = null;
private Button endButton = null;
private Button resetBarButton = null;
private Button speedUpButton = null;
private Button speedDownButton = null;
private TextView myTextView = null;
private CheckBox toastCB = null;
private CheckBox barCB = null;
private CheckBox textViewCB = null;
private ProgressBar bar = null;
public int myThreadCounter = 0;
public int myThreadCounter4Bar = 0;
public int speed = 500;
public boolean isToastCBChecked = false;
public boolean isBarCBChecked = false;
public boolean isTextViewCBChecked = false;

// private CheckBox toastCB = (CheckBox) findViewById(R.id.toastCB);
// private CheckBox barCB = (CheckBox) findViewById(R.id.barCB);
// private CheckBox textViewCB = (CheckBox) findViewById(R.id.textCB);

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

// findViewById
bar = (ProgressBar) findViewById(R.id.bar);
startButton = (Button) findViewById(R.id.startButton);
endButton = (Button) findViewById(R.id.endButton);
resetBarButton = (Button) findViewById(R.id.resetBar);
speedUpButton = (Button) findViewById(R.id.speedUP);
speedDownButton = (Button) findViewById(R.id.speedDown);
myTextView = (TextView) findViewById(R.id.myTextView);
bar = (ProgressBar) findViewById(R.id.bar);

// the Buttons
startButton.setOnClickListener(new startButtonListener());
endButton.setOnClickListener(new endButtonListener());
resetBarButton.setOnClickListener(new resetBarButtonListener());
speedUpButton.setOnClickListener(new speedUpButtonListener());
speedDownButton.setOnClickListener(new speedDownButtonListener());

// the CheckBoxs:
CheckBox toastCB = (CheckBox) findViewById(R.id.toastCB);
CheckBox barCB = (CheckBox) findViewById(R.id.barCB);
CheckBox textViewCB = (CheckBox) findViewById(R.id.textCB);

toastCB.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
// TODO Auto-generated method stub

if (isChecked){
isToastCBChecked = true;
System.out.println("toastCB is checked");
} else {
isToastCBChecked = false;
System.out.println("toastCB is unchecked");
}
}
});
textViewCB.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
// TODO Auto-generated method stub

if (isChecked){
isTextViewCBChecked = true;
myTextView.setText("you opened myTextView, i'm gonna have work to do here");
} else {
isTextViewCBChecked = false;
myTextView.setText("myTextView was closed manually, yeah, we all know who did that");
}
//myTextView.
}
});
barCB.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
// TODO Auto-generated method stub

if (isChecked){
bar.setVisibility(View.VISIBLE);
isBarCBChecked = true;
System.out.println("barCB is checked");
} else {
bar.setVisibility(View.INVISIBLE);
isBarCBChecked = false;
System.out.println("barCB is unchecked");
}

}
});

/*
* for (;;){ try { //设置当前显示睡眠1秒 Thread.sleep(1000); } catch
* (InterruptedException e) { // TODO Auto-generated catch block
* e.printStackTrace(); } if (toastCB.isChecked()){
* System.out.println("toastCB is Checked"); } else { continue; } }
*/
}

// TODO button listener
class startButtonListener implements OnClickListener{

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
// reset my counter
myThreadCounter = 0;
handler.post(myThread);
}

}
class endButtonListener implements OnClickListener{

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
handler.removeCallbacks(myThread);
System.out.println("Okay, someone removed myThread, who it is!who it is!! Give me ur name!!!");

}

}
class resetBarButtonListener implements OnClickListener{

@Override
public void onClick(View v) {
// TODO I kinda Thought this is also a stupid method to reset...
myThreadCounter4Bar = myThreadCounter;
bar.setProgress(0);
}

}

class speedUpButtonListener implements OnClickListener{

@Override
public void onClick(View v) {
speed += 200;
}

}
class speedDownButtonListener implements OnClickListener{

@Override
public void onClick(View v) {
speed -= 200;
}

}

// handler
Handler handler = new Handler();
Runnable myThread = new Runnable(){

@Override
public void run() {
// TODO Auto-generated method stub
myThreadCounter += 1;
System.out.println("This is the " + myThreadCounter + " Times my thread running");
// mystuff
/*
if (toastCB.isChecked()){
Toast.makeText(myHandlerActivity.this,"This is the thread running",Toast.LENGTH_SHORT); // " + myThreadCounter + " Times my
}
*/
// TODO there gotta be some way else other than stupid way like this... 3 boolen? god....
System.out.println("ToastCB? " + isToastCBChecked + " TextViewCB? " + isTextViewCBChecked + " BarCB? " + isBarCBChecked);

if (isToastCBChecked){
Toast.makeText(myHandlerActivity.this,"This is the " + myThreadCounter + " Times my thread running",Toast.LENGTH_SHORT).show(); //
}
if (isTextViewCBChecked){
myTextView.setText("This is the " + myThreadCounter + " Times my thread running");
}
if (isBarCBChecked){
bar.setProgress(myThreadCounter-myThreadCounter4Bar);
System.out.println("New, the bar total Progress is: " + (int)(myThreadCounter-myThreadCounter4Bar));
}
// again
handler.postDelayed(myThread, speed);
}

};

}</pre>
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<CODE>

<p>
布局文件
</p>
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</p>
<pre name="code" class="html"><?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<TextView
android:id="@+id/myTextView"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="myTextView was not open by default, well, don't blame your self for that"
android:cursorVisible="false"/>

<ProgressBar
android:id="@+id/bar"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:visibility="invisible"
android:max="100" />

<CheckBox
android:id="@+id/toastCB"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:text="toastCB" />
<CheckBox
android:id="@+id/textCB"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:text="textCB" />
<CheckBox
android:id="@+id/barCB"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:text="barCB" />
<LinearLayout
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:orientation="horizontal"
>

<Button
android:id="@+id/resetBar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="resetBar" />
<Button
android:id="@+id/resetTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="resetTextView" />
<Button
android:id="@+id/speedUP"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="speed +" />
<Button
android:id="@+id/speedDown"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="speed -" />

</LinearLayout>

<Button
android:id="@+id/startButton"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="start" />

<Button
android:id="@+id/endButton"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="end" />

</LinearLayout></pre>
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<p>
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