[转载]ProgressDialog用法_android开发_新浪博客

[转载]ProgressDialog用法_android开发_新浪博客.

1.新建Android项目 ProgressDialog    在包andorid.huada下建文件ProgressDialogActivity.java

2.ProgressDialogActivity.java代码如下

[java]

package android.huada;

import android.app.Activity;

import android.app.ProgressDialog;

import android.os.Bundle;

import android.os.Handler;

import android.os.Message;

public class ProgressDialogActivity extends Activity {

ProgressDialog progressDialog;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

progress("下载数据中", "请稍等......");

}

public void progress(String title,String message){

progressDialog = new ProgressDialog(this);

updateThread thread= new updateThread();

progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);

progressDialog.setMessage(message);

progressDialog.setTitle(title);

progressDialog.setProgress(0);

progressDialog.setMax(100);

progressDialog.show();

thread.start();

}

Handler handler = new Handler(){

@Override

public void handleMessage(Message msg) {

// TODO Auto-generated method stub

if(msg.what>=100){

progressDialog.cancel();

}

progressDialog.setProgress(msg.what);

super.handleMessage(msg);

}

};

class updateThread extends Thread{

public void run(){

handler.sendEmptyMessage(0);

try {

updateThread.sleep(1000);

handler.sendEmptyMessage(10);

updateThread.sleep(1000);

handler.sendEmptyMessage(20);

updateThread.sleep(1000);

handler.sendEmptyMessage(30);

updateThread.sleep(1000);

handler.sendEmptyMessage(40);

updateThread.sleep(1000);

handler.sendEmptyMessage(50);

updateThread.sleep(1000);

handler.sendEmptyMessage(60);

updateThread.sleep(1000);

handler.sendEmptyMessage(70);

updateThread.sleep(1000);

handler.sendEmptyMessage(80);

updateThread.sleep(1000);

handler.sendEmptyMessage(100);

updateThread.sleep(1000);

} catch (InterruptedException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

};

}
[/java]
3.配置文件main.xml代码如下

[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"

/>

</LinearLayout>
[/xml]