[Android] ProgressDialog与线程整合使用，显示BusyMark

package com.example;

import android.app.Activity;

import android.app.ProgressDialog;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.TextView;

public class EX0318 extends Activity

{

private Button mButton1;

private TextView mTextView1;

public ProgressDialog myDialog = null;

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

mButton1 =(Button) findViewById(R.id.myButton1);

mTextView1 = (TextView) findViewById(R.id.myTextView1);

mButton1.setOnClickListener(myShowProgressBar);

}

Button.OnClickListener myShowProgressBar =

new Button.OnClickListener()

{

public void onClick(View arg0)

{

final CharSequence strDialogTitle =

getString(R.string.str_dialog_title);

final CharSequence strDialogBody =

getString(R.string.str_dialog_body);

// 显示Progress对话框

myDialog = ProgressDialog.show

( EX0318.this,

strDialogTitle,

strDialogBody,

true );

mTextView1.setText(strDialogBody);

new Thread()

{

public void run()

{

try

{

/* 在这里写上要背景执行的程序片段 */

/* 为了明显看见效果，以暂停3秒作为示范 */

sleep(3000);

}

catch (Exception e)

{

e.printStackTrace();

}

finally

{

// 卸除所建立的myDialog对象。

myDialog.dismiss();

}

}

}.start(); /* 开始执行线程 */

}

/*End: public void onClick(View arg0)*/

};

}