android progressbar

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <ProgressBar
        android:id="@+id/progressBar1"
        style="?android:attr/progressBarStyleLarge"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <ProgressBar
        android:id="@+id/progressBar2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <ProgressBar
        android:id="@+id/progressBar3"
        style="?android:attr/progressBarStyleSmall"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <ProgressBar
        android:max="100"
        android:progress="50"
        android:secondaryProgress="80"
        android:id="@+id/horizi"
        style="?android:attr/progressBarStyleHorizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <Button
        android:id="@+id/add"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="增加" />

    <Button
        android:id="@+id/reduce"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="减少" />

    <Button
        android:id="@+id/reset"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="重置" />

    <TextView
        android:id="@+id/text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="TextView" />
    <Button
        android:id="@+id/show"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="显示进度条对话框" />

</LinearLayout>

package com.example.hello;

import android.support.v7.app.ActionBarActivity;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.Button;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;


public class MainActivity extends ActionBarActivity implements OnClickListener{

    private ProgressBar progress;
    private Button add;
    private Button reduce;
    private Button reset;
    private TextView text;
    private ProgressDialog prodialog;
    private Button show;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        
        //启用窗口特征，启动带进度的和不带进度的进度条
        requestWindowFeature(Window.FEATURE_PROGRESS);
        requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
        setContentView(R.layout.activity_main);
        //显示两种进度条
        setProgressBarVisibility(true);
        setProgressBarIndeterminateVisibility(true);
        //Max = 10000
        setProgress(6590);
        init();
    }
    private void init() {
        progress = (ProgressBar) findViewById(R.id.horizi);
        add = (Button) findViewById(R.id.add);
        reduce = (Button) findViewById(R.id.reduce);
        reset = (Button) findViewById(R.id.reset);
        text = (TextView) findViewById(R.id.text);
        show = (Button) findViewById(R.id.show);
        //获取第一进度条的进度
        int  first = progress.getProgress();
        //获取第二进度条的进度
        int second = progress.getSecondaryProgress();
        //获取最大进度条的进度
        int max = progress.getMax();
        text.setText("第一进度条的百分比："+(int)first/(float)max*100+"% 第一进度条的百分比："+(int)second/(float)max*100+"%");
        add.setOnClickListener(this);
        reduce.setOnClickListener(this);
        reset.setOnClickListener(this);
        show.setOnClickListener(this);
    }
    /* (non-Javadoc)
     * @see android.view.View.OnClickListener#onClick(android.view.View)
     */
    @Override
    public void onClick(View v) {
        switch(v.getId()){
            case R.id.add:
                //增加第一进度和第二进度10个刻度
                progress.incrementProgressBy(10);
                progress.incrementSecondaryProgressBy(10);
                break;
            case R.id.reduce:
                //减少第一进度和第二进度10个刻度
                progress.incrementProgressBy(-10);
                progress.incrementSecondaryProgressBy(-10);
                break;
            case R.id.reset:
                progress.setProgress(50);
                progress.setSecondaryProgress(80);
                break;
            case R.id.show:
                //新建对象
                prodialog = new ProgressDialog(this);
                //设置显示风格
                prodialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
                //设置标题
                prodialog.setTitle("慕课网");
                //设置对话框的内容
                prodialog.setMessage("欢迎大家支持慕课网");
                //设置图标
                prodialog.setIcon(R.drawable.ic_launcher);
                
                //设置最大进度
                prodialog.setMax(100);
                prodialog.incrementProgressBy(50);
                prodialog.setIndeterminate(false);
                
                prodialog.setButton(DialogInterface.BUTTON_POSITIVE, "SURE",new DialogInterface.OnClickListener() {
                    
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        Toast.makeText(MainActivity.this, "欢迎大家支持慕课网", Toast.LENGTH_SHORT);
                    }
                });
                
                //是否可以通过返回按钮退出对话框
                prodialog.setCancelable(true);
                //显示
                prodialog.show();
                break;
        }
        text.setText("第一进度条的百分比："+(int)(progress.getProgress()/(float)progress.getMax()*100)+"% 第一进度条的百分比："+(int)(progress.getSecondaryProgress()/(float)progress.getMax()*100)+"%");
    }
}