android ProgressBar 的使用

1. main文件

<?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:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="@string/hello" />


    <ProgressBar
        android:id="@+id/progressBar1"
        style="?android:attr/progressBarStyleHorizontal"
        android:layout_width="255dp"
        android:layout_height="wrap_content"
        android:visibility="gone"
         />

    <ProgressBar
        android:id="@+id/progressBar2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:visibility="gone"
         />
    <Button 
        android:id="@+id/button"
        android:text="Ok"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        />

</LinearLayout>

2. java 文件的写法

package com.android.voew;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ProgressBar;

/**
 * 
 * @author liuqing
 * @version 1.0
 * @see Android ProgreeBar 的使用
 * 2011-10-12
 *
 */
public class Viewchapter3Activity extends Activity {
    /** Called when the activity is first created. */
	private ProgressBar firstProgree;
	
	private ProgressBar secondProgree;
	
	private Button button;
	
	private int i = 0;
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        this.firstProgree = (ProgressBar)this.findViewById(R.id.progressBar1);
        this.secondProgree = (ProgressBar)this.findViewById(R.id.progressBar2);
        this.button = (Button)this.findViewById(R.id.button);
        this.button.setOnClickListener(new ButtonListener());
    }
    
    //添加OnClickListener方法
    class ButtonListener implements OnClickListener {

		@Override
		public void onClick(View v) {
			if (i == 0) {
				firstProgree.setMax(150);
				secondProgree.setMax(150);
				
				firstProgree.setVisibility(View.VISIBLE);
				secondProgree.setVisibility(View.VISIBLE);
				button.setText("Begin");
				i++;
			}
			else {
				firstProgree.setProgress(i * 10);
				//设进度条的从进度属性
				firstProgree.setSecondaryProgress((i * 10) + 10);
				secondProgree.setProgress(i * 10);
				if (firstProgree.getMax() <= i * 10) {
					firstProgree.setVisibility(View.GONE);
					i = 0;
					button.setText("OK");
					secondProgree.setVisibility(View.GONE);
				}
				i++;
			}
		}

		
    	
    }
}