22 Android ProgressBar

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world" />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView1"
        android:layout_below="@+id/textView1"
        android:layout_marginLeft="24dp"
        android:layout_marginTop="31dp"
        android:text="圆形进度" />

    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/button1"
        android:layout_below="@+id/button1"
        android:layout_marginTop="58dp"
        android:text="方形进度提示框" />

</RelativeLayout>

package com.example.progressbar;

import android.os.Bundle;
import android.app.Activity;
import android.app.ProgressDialog;
import android.view.Menu;
import android.view.View;
import android.widget.Button;

public class MainActivity extends Activity {
	private Button button1;
	private Button button2;
    private ProgressDialog dialog;//android 4.0
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		button1=(Button)findViewById(R.id.button1);
		button2=(Button)findViewById(R.id.button2);
		dialog=new ProgressDialog(MainActivity.this);
		button1.setOnClickListener(new View.OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				dialog.setTitle("提示信息");
				dialog.setMessage("正在加载...");
				//点击空白区dialog 消失 一般为false
//				dialog.setCancelable(false);
		        dialog.show();
//		        dialog.dismiss();
			}
		});
		
		button2.setOnClickListener(new View.OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				dialog.setTitle("提示信息");
				dialog.setMessage("正在加载...");
				dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
				dialog.setMax(100);
				dialog.setProgress(50);
				dialog.setSecondaryProgress(80);
				dialog.show();
			}
		});
	}

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

}