ProgressDialog对话框

今天还讲了ProgressDialog对话框，就是显示进度条加载的对话框。

MainActivity：

package com.example.progressdialog;

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

public class MainActivity extends Activity implements OnClickListener{
	
	private Button btn1,btn2;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		btn1 = (Button) this.findViewById(R.id.btn1);
		btn2 = (Button) this.findViewById(R.id.btn2);
		btn1.setOnClickListener(this);
		btn2.setOnClickListener(this);
	}
	@Override
	public void onClick(View v) {
		switch (v.getId()) {
		case R.id.btn1:
			ProgressDialog.show(MainActivity.this, "标题", "任务正在执行中，请稍候...",false,true);
			
			break;
		case R.id.btn2:
			ProgressDialog dialog = new ProgressDialog(this);
			dialog.setTitle("标题");
			dialog.setMessage("任务执行中，请稍候...");
			dialog.setIndeterminate(false);
			dialog.setCancelable(true);
			dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
			dialog.show();
			break;
		default:
			break;
		}
	}

}

xml文件：

<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" >
	<Button 
	    android:id="@+id/btn1"
	    android:layout_width="match_parent"
	    android:layout_height="wrap_content"
	    android:text="环形进度对话框"/>
	<Button 
	    android:id="@+id/btn2"
	    android:layout_below="@id/btn1"
	    android:layout_width="match_parent"
	    android:layout_height="wrap_content"
	    android:text="水平进度对话框"/>
</RelativeLayout>