Android组件 稍等提示（ProgressDialog）

/res/layout/main.xml代码如下：

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical" >    <Button        android:id="@+id/btn_circle"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="圆形进度条" /><Button    android:id="@+id/btn_long"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="长形进度条" /></LinearLayout>

Java代码如下：

package com.demo.android.progressDialog;import android.app.Activity;import android.app.ProgressDialog;import android.content.DialogInterface;import android.os.Bundle;import android.view.View;import android.widget.Button;public class MainActivity extends Activity {private Button btnCircle;    private Button btnLong;    private ProgressDialog progressDialog;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        findViews();    }private void findViews() {btnCircle=(Button) findViewById(R.id.btn_circle);btnCircle.setOnClickListener(btnCircleOnClickListener);btnLong=(Button) findViewById(R.id.btn_long);btnLong.setOnClickListener(btnLongOnClickListener);}/** * 显示圆形进度条 */private View.OnClickListener btnCircleOnClickListener=new View.OnClickListener() {@Overridepublic void onClick(View v) {progressDialog=new ProgressDialog(MainActivity.this);//设置进度条的样式为圆形progressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);progressDialog.setTitle("提示");progressDialog.setMessage("数据加载中，请稍后....");//设置进度条的图标progressDialog.setIcon(R.drawable.android);//设置进度条是否为不明确progressDialog.setIndeterminate(false);//设置进度条是否按返回键取消progressDialog.setCancelable(true);progressDialog.setButton("确定", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {progressDialog.cancel();}});progressDialog.show();}};/** * 显示长形进度条 */private View.OnClickListener btnLongOnClickListener=new View.OnClickListener() {int count=0;@Overridepublic void onClick(View v) {progressDialog=new ProgressDialog(MainActivity.this);progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);progressDialog.setTitle("提示");progressDialog.setMessage("数据加载中，请稍后....");progressDialog.setIcon(R.drawable.android);progressDialog.setIndeterminate(false);progressDialog.setCancelable(true);progressDialog.setMax(200);  //设置最大值progressDialog.setProgress(0);  //设置当前默认进度为0progressDialog.setSecondaryProgress(100);  //设置第二进度条的值为100progressDialog.setButton("取消", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {progressDialog.cancel();}});progressDialog.show();//定义线程动态改变当前进度条的值new Thread(){   public void run(){while(count<=200){progressDialog.setProgress(count++);try {Thread.sleep(100);} catch (InterruptedException e) {e.printStackTrace();}};}}.start();}};}

效果如下：