Android 进度条对话框ProgressDialog

<?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" >

<Button
android:id="@+id/progress"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="条形进度条" />

<Button
android:id="@+id/circle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="圆形进度条" />

</LinearLayout>

package com.example.yanlei.my;

import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import java.util.Calendar;
import android.app.Activity;
import android.app.DatePickerDialog;
import android.app.Dialog;
import android.app.TimePickerDialog;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.TimePicker;

public class MainActivity extends AppCompatActivity {

//声明按钮
private Button btnCircle=null;
private Button btnProgress=null;
//声明进度条对话框
private ProgressDialog pdDialog=null;
//进度计数
int iCount  = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnCircle = (Button)findViewById(R.id.circle);
btnProgress = (Button)findViewById(R.id.progress);

//设置btnCircle的事件监听
btnCircle.setOnClickListener(new Button.OnClickListener() {

@Override
public void onClick(View v){

iCount  = 0;
//创建ProgressDialog对象
pdDialog = new ProgressDialog(MainActivity.this);

//设置进度条风格，风格为圆形，旋转的
pdDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);

// 设置ProgressDialog 标题
pdDialog.setTitle("圆形进度条");

// 设置ProgressDialog 提示信息
pdDialog.setMessage("正在下载中……");

// 设置ProgressDialog 标题图标
pdDialog.setIcon(R.drawable.ic_launcher);

// 设置ProgressDialog 进度条进度
pdDialog.setProgress(100);

// 设置ProgressDialog 的进度条是否不明确
pdDialog.setIndeterminate(false);

// 设置ProgressDialog 是否可以按退回按键取消
pdDialog.setCancelable(true);

// 设置ProgressDialog 的一个Button
pdDialog.setButton("取消", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int i)
{
//点击“取消”按钮取消对话框
dialog.cancel();
}
});

// 让ProgressDialog显示
pdDialog.show();

//创建线程实例
new Thread(){
public void run(){
try{
while (iCount  <= 100) {
// 由线程来控制进度。
pdDialog.setProgress(iCount ++);
Thread.sleep(50);
}
pdDialog.cancel();
}
catch (InterruptedException e){
pdDialog.cancel();
}
}

}.start();
}

});

//设置btnProgress的事件监听
btnProgress.setOnClickListener(new Button.OnClickListener() {
@Override
public void onClick(View v)
{
iCount  = 0;
// 创建ProgressDialog对象
pdDialog = new ProgressDialog(MainActivity.this);

// 设置进度条风格，风格为长形
pdDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);

// 设置ProgressDialog 标题
pdDialog.setTitle("条形进度条");

// 设置ProgressDialog 提示信息
pdDialog.setMessage("正在下载中……");

// 设置ProgressDialog 标题图标
pdDialog.setIcon(R.drawable.ic_launcher);

// 设置ProgressDialog 进度条进度
pdDialog.setProgress(100);

// 设置ProgressDialog 的进度条是否不明确
pdDialog.setIndeterminate(false);

// 设置ProgressDialog 是否可以按退回按键取消
pdDialog.setCancelable(true);

// 让ProgressDialog显示
pdDialog.show();

//创建线程实例
new Thread(){
public void run(){
try{
while (iCount  <= 100) {
// 由线程来控制进度。
pdDialog.setProgress(iCount ++);
Thread.sleep(50);
}
pdDialog.cancel();
}
catch (InterruptedException e){
pdDialog.cancel();
}
}

}.start();
}
});
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();

//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}

return super.onOptionsItemSelected(item);
}
}