android Progressbar使用

main.xml

<?xml version="1.0" encoding="utf-8"?>  
      android:orientation="vertical" 
     android:layout_width="fill_parent"  
     android:layout_height="fill_parent">  

              android:layout_width="fill_parent"  
         android:layout_height="wrap_content" 
         android:text="Welcome to Mr Wei's blog" />  
              android:id="@+id/rectangleProgressBar"  
         style="?android:attr/progressBarStyleHorizontal" mce_style="?android:attr/progressBarStyleHorizontal"   
         android:layout_width="fill_parent" 
         android:layout_height="wrap_content"
         android:visibility="gone"
         />
              android:id="@+id/circleProgressBar"  
         style="?android:attr/progressBarStyleLarge" mce_style="?android:attr/progressBarStyleLarge"
         android:layout_width="wrap_content" 
         android:layout_height="wrap_content"
         android:visibility="gone" 
         />

public class ProgressBarDemo extends Activity {

private ProgressBar rectangleProgressBar, circleProgressBar;
private Button mButton;

protected static final int STOP = 0x10000;
protected static final int NEXT = 0x10001;
private int iCount = 0;

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.progress_bar_demo);
// findView By id
rectangleProgressBar = (ProgressBar) findViewById(R.id.rectangleProgressBar);
circleProgressBar = (ProgressBar) findViewById(R.id.circleProgressBar);
mButton = (Button) findViewById(R.id.button);

rectangleProgressBar.setIndeterminate(false);
circleProgressBar.setIndeterminate(true);

mButton.setOnClickListener(new Button.OnClickListener() {

public void onClick(View v) {

rectangleProgressBar.setVisibility(View.VISIBLE);
circleProgressBar.setVisibility(View.VISIBLE);

rectangleProgressBar.setMax(100);
rectangleProgressBar.setProgress(0);
circleProgressBar.setProgress(0);

new IncreaseThread().start();
}
});
}

// 定义一个Handler
private Handler mHandler = new Handler() {
public void handleMessage(Message msg) {
switch (msg.what) {
case STOP:
rectangleProgressBar.setVisibility(View.GONE);
circleProgressBar.setVisibility(View.GONE);
Thread.currentThread().interrupt();
break;
case NEXT:
if (!Thread.currentThread().isInterrupted()) {
rectangleProgressBar.setProgress(iCount);
circleProgressBar.setProgress(iCount);
}
break;
}
}
};

// 每秒步长为5增加,到100%时停止
class IncreaseThread extends Thread {

@Override
public void run() {
for (int i = 0; i < 20; i++) {
try {
iCount = (i + 1) * 5;
Thread.sleep(1000);
if (i == 19) {
Message msg = new Message();
msg.what = STOP;
mHandler.sendMessage(msg);
break;
} else {
Message msg = new Message();
msg.what = NEXT;
mHandler.sendMessage(msg);
}
} catch (Exception e) {
e.printStackTrace();
}
}
}

}
}

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