Android开发之环形进度条(安卓默认…

.xml

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical"

    tools:context=".MainActivity" >

   

        android:id="@+id/mybut"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="查找网络"/>

   

.java

package com.example.progressdialog;

import android.os.Bundle;

import android.app.Activity;

import android.app.ProgressDialog;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

public class MainActivity extends Activity {

private Button but=null;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

this.but=(Button) super.findViewById(R.id.mybut);

this.but.setOnClickListener(new OnClickListenerImp());

}

public class OnClickListenerImp implements OnClickListener{

public void onClick(View v) {

//创建我们的进度条

final ProgressDialog proDia=new ProgressDialog(MainActivity.this);

proDia.setTitle("搜索网络");

proDia.setMessage("请耐心等待");

proDia.onStart();

//匿名内部类

new Thread(){

public void run(){

try{

Thread.sleep(3000);

}

catch(Exception e){

}

finally{

//匿名内部类要访问类当中的数据，该数据必须为final

proDia.dismiss();//隐藏对话框

}

}

}.start();

proDia.show();

}

}

}