Android之进度条对话框Progressdialog

<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="com.example.android_progressdialog.MainActivity" >

<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="92dp"
android:text="圆形进度提示框"
android:textSize="20sp" />

<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/button1"
android:layout_centerHorizontal="true"
android:layout_marginTop="56dp"
android:text="方形进度提示框" />

</RelativeLayout>

package com.example.android_progressdialog;

import android.support.v7.app.ActionBarActivity;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;

public class MainActivity extends ActionBarActivity {

private Button btn1;
private Button btn2;
private ProgressDialog dialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn1=(Button) this.findViewById(R.id.button1);
btn2=(Button) this.findViewById(R.id.button2);
dialog=new ProgressDialog(MainActivity.this);
btn1.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
dialog.setTitle("提示信息");
dialog.setMessage("正在下载,请稍候...");
dialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);//设置进度条为圆形的
dialog.setCancelable(false);//设置用户在空白处点击可以取消
dialog.show();
}
});

btn2.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
dialog.setTitle("提示信息");
dialog.setMessage("正在下载,请稍候...");
dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);//设置进度条为方形的，默认为圆形
dialog.setMax(100);
dialog.setProgress(60);
dialog.setSecondaryProgress(80);//第二进度条，当缓冲速度（虚的）比下载速度（实的）快的
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;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}