Android进度条实例测试

主文件ProgressBar.java：

package com.progress;import android.app.Activity;import android.content.DialogInterface;import android.view.View.OnClickListener;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.ProgressBar;public class progress extends Activity {    /** Called when the activity is first created. */    private ProgressBar firstBar=null;    private ProgressBar secondBar=null;    private Button mybutton=null;    private int i=0;@Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);                firstBar=(ProgressBar)findViewById(R.id.firstBar);        secondBar=(ProgressBar)findViewById(R.id.secondBar);        mybutton=(Button)findViewById(R.id.MyButton);        mybutton.setText("开始");        mybutton.setOnClickListener(new ButtonListener());            }class ButtonListener implements OnClickListener{@Overridepublic void onClick(View v) {// TODO Auto-generated method stub  if(0==i){  firstBar.setVisibility(View.VISIBLE);  secondBar.setVisibility(View.VISIBLE);  }else if(i<100){  firstBar.setProgress(i);  firstBar.setSecondaryProgress(i+10);  secondBar.setProgress(i);  }else{    firstBar.setVisibility(View.GONE);  secondBar.setVisibility(View.GONE);    }i=i+10;}}}

主要配置文件：main.xml

<?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/firstBar"    style="?android:attr/progressBarStyleHorizontal"    android:layout_width="200dp"    android:layout_height="wrap_content"    android:visibility="gone"        /><ProgressBar    android:id="@+id/secondBar"    style="?android:attr/progressBarStyle"       android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:visibility="gone"    /><Button     android:id="@+id/MyButton"     android:layout_width="wrap_content"     android:layout_height="wrap_content"          /></LinearLayout>

?