Android-高级UI控件_ProgressBar进度条

package com.lxt008;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.view.Window;
import android.widget.Button;
import android.widget.ProgressBar;

public class Activity01 extends Activity
{
//声明ProgressBar对象
private ProgressBar m_ProgressBar;
private ProgressBar m_ProgressBar2;
private Button mButton01;
protected static final int GUI_STOP_NOTIFIER = 0x108;
protected static final int GUI_THREADING_NOTIFIER = 0x109;
public int intCounter=0;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
//设置窗口模式，，因为需要显示进度条在标题栏
requestWindowFeature(Window.FEATURE_PROGRESS);
setProgressBarVisibility(true);
setContentView(R.layout.main);

//取得ProgressBar
m_ProgressBar = (ProgressBar) findViewById(R.id.ProgressBar01);
m_ProgressBar2= (ProgressBar) findViewById(R.id.ProgressBar02);
mButton01 = (Button)findViewById(R.id.Button01);

m_ProgressBar.setIndeterminate(false);
m_ProgressBar2.setIndeterminate(false);

//当按钮按下时开始执行,
mButton01.setOnClickListener(new Button.OnClickListener()
{
@Override
public void onClick(View v)
{
// TODO Auto-generated method stub

//设置ProgressBar为可见状态
m_ProgressBar.setVisibility(View.VISIBLE);
m_ProgressBar2.setVisibility(View.VISIBLE);
//设置ProgressBar的最大值
m_ProgressBar.setMax(100);
//设置ProgressBar当前值
m_ProgressBar.setProgress(0);
m_ProgressBar2.setProgress(0);

//通过线程来改变ProgressBar的值
new Thread(new Runnable() {
public void run()
{
for (int i = 0; i < 10; i++)
{
try
{
intCounter = (i + 1) * 20;
Thread.sleep(1000);

if (i == 4)
{
Message m = new Message();

m.what = Activity01.GUI_STOP_NOTIFIER;
Activity01.this.myMessageHandler.sendMessage(m);
break;
}
else
{
Message m = new Message();
m.what = Activity01.GUI_THREADING_NOTIFIER;
Activity01.this.myMessageHandler.sendMessage(m);
}
}
catch (Exception e)
{
e.printStackTrace();
}
}
}
}).start();
}
});
}

Handler myMessageHandler = new Handler()
{
// @Override
public void handleMessage(Message msg)
{
switch (msg.what)
{
//ProgressBar已经是对大值
case Activity01.GUI_STOP_NOTIFIER:
m_ProgressBar.setVisibility(View.GONE);
m_ProgressBar2.setVisibility(View.GONE);
Thread.currentThread().interrupt();
break;
case Activity01.GUI_THREADING_NOTIFIER:
if (!Thread.currentThread().isInterrupted())
{
// 改变ProgressBar的当前值
m_ProgressBar.setProgress(intCounter);
m_ProgressBar2.setProgress(intCounter);

// 设置标题栏中前景的一个进度条进度值
setProgress(intCounter*100);
// 设置标题栏中后面的一个进度条进度值
setSecondaryProgress(intCounter*100);//
}
break;
}
super.handleMessage(msg);
}
};
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
<ProgressBar
android:id="@+id/ProgressBar01"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:visibility="gone"
/>
<ProgressBar
android:id="@+id/ProgressBar02"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
style="?android:attr/progressBarStyleLarge"
android:max="100"
android:progress="50"
android:secondaryProgress="70"
android:visibility="gone"
/>
<Button
android:id="@+id/Button01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="开始" />
</LinearLayout>