android之进度条组件ProgressBar

首先是main.xml文件

代码如下：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >
	<ProgressBar
	    android:id="@+id/myprobarA"
	    style="?android:attr/progressBarStyle"
	    android:visibility="gone"
	    android:layout_width="fill_parent"
	    android:layout_height="wrap_content"/>
	<ProgressBar
	    android:id="@+id/myprobarB"
	    style="?android:attr/progressBarStyleHorizontal"
	    android:visibility="gone"
	    android:layout_width="fill_parent"
	    android:layout_height="wrap_content"/>
	<ProgressBar
	    android:id="@+id/myprobarC"
	    style="?android:attr/progressBarStyleHorizontal"
	    android:visibility="gone"
	    android:max="120"
	    android:progress="0"
	    android:layout_width="fill_parent"
	    android:layout_height="wrap_content"/>
	<ProgressBar
	    android:id="@+id/myprobarD"
	    android:visibility="gone"
	    android:max="120"
	    android:progress="50"
	    android:secondaryProgress="70"
	    style="?android:attr/progressBarStyleLarge"
	    android:layout_width="fill_parent"
	    android:layout_height="wrap_content"/>
	<ProgressBar
	    android:id="@+id/myprobarE"
	    android:visibility="gone"
	    android:max="120"
	    android:progress="50"
	    android:secondaryProgress="70"
	    style="?android:attr/progressBarStyleSmall"
	    android:layout_width="fill_parent"
	    android:layout_height="wrap_content"/>
	<Button
	    android:id="@+id/mybut"
	    android:text="显示进度条"
	    android:layout_width="wrap_content"
	    android:layout_height="wrap_content"/>
</LinearLayout>

　　然后编写Activity.java类

代码如下：

package com.example.myfirstproject;

import java.sql.Date;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;
import java.util.Timer;
import java.util.TimerTask;
import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.app.Activity;
import android.content.pm.ActivityInfo;
import android.content.res.Configuration;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.*;

public class MainActivity extends Activity {
	private ProgressBar myprobarA,myprobarB,myprobarC,myprobarD,myprobarE;
	private Button mybut;
	protected static final int STOP = 1;
	protected static final int CONTINUE = 2;
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        this.myprobarA = (ProgressBar)this.findViewById(R.id.myprobarA);
        this.myprobarB = (ProgressBar)this.findViewById(R.id.myprobarB);
        this.myprobarC = (ProgressBar)this.findViewById(R.id.myprobarC);
        this.myprobarD = (ProgressBar)this.findViewById(R.id.myprobarD);
        this.myprobarE = (ProgressBar)this.findViewById(R.id.myprobarE);
        this.mybut = (Button)this.findViewById(R.id.mybut);
        this.myprobarA.setIndeterminate(false);
        this.myprobarB.setIndeterminate(false);
        this.myprobarC.setIndeterminate(true);
        this.myprobarD.setIndeterminate(false);
        this.myprobarE.setIndeterminate(false);
        this.mybut.setOnClickListener(new OnClickListenerlmpl());
    }
    private class OnClickListenerlmpl implements OnClickListener{
    	public void onClick(View view){
    		MainActivity.this.myprobarB.setSecondaryProgress(0);
    		MainActivity.this.myprobarA.setVisibility(View.VISIBLE);
    		MainActivity.this.myprobarB.setVisibility(View.VISIBLE);
    		MainActivity.this.myprobarC.setVisibility(View.VISIBLE);
    		MainActivity.this.myprobarD.setVisibility(View.VISIBLE);
    		MainActivity.this.myprobarE.setVisibility(View.VISIBLE);
    		MainActivity.this.myprobarA.setMax(120);
    		MainActivity.this.myprobarB.setMax(120);
    		MainActivity.this.myprobarA.setProgress(0);
    		MainActivity.this.myprobarB.setProgress(0);
    		new Thread(new Runnable(){
    			public void run(){
    				int count = 0;
    				for(int i = 0;i < 10;i++){
    					try{
    						count = (i+1)*20;
    						Thread.sleep(500);
    						if(i==6){
    							Message m = new Message();
    							m.what = MainActivity.STOP;
    							MainActivity.this.myMessageHandler.sendMessage(m);
    							break;
    						}else{
    							Message m = new Message();
    							m.arg1 = count;
    							m.what = MainActivity.CONTINUE;
    							MainActivity.this.myMessageHandler.sendMessage(m);
    						}
    					}catch(Exception ex){
    						ex.printStackTrace();
    					}
    				}
    			}
    		}).start();
    	}
    }
    private Handler myMessageHandler = new Handler(){
    	public void handleMessage(Message msg){
    		switch(msg.what){
    		case MainActivity.STOP:
    			myprobarA.setVisibility(View.GONE);
    			myprobarB.setVisibility(View.GONE);
    			myprobarC.setVisibility(View.GONE);
    			myprobarD.setVisibility(View.GONE);
    			myprobarE.setVisibility(View.GONE);
    			Thread.currentThread().interrupt();
    			break;
    		case MainActivity.CONTINUE:
    			if(!Thread.currentThread().isInterrupted()){
    				myprobarA.setProgress(msg.arg1);
    				myprobarB.setProgress(msg.arg1);
    				myprobarC.setProgress(msg.arg1);
    				myprobarD.setProgress(msg.arg1);
    				myprobarE.setProgress(msg.arg1);
    			}
    			break;
    		}
    	}
    };
}

　　运行效果：