android实战教程-控件篇ProgressDialog(进度条对话框)

android的进度条主要有两种,一种是长时间操作,无法确认时间长短的,我们叫它不确定进度条,一种是短时间操作,可以确定时间的,我们叫它确定进度条,

android开发团队为我们提供了两种风格的进度条:一种是水平式,另外一种是圆形的:


新建android项目,修改默认的activity_mian.xml文件的布局为:

<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/nosure"
	    android:layout_width="wrap_content"
	    android:layout_height="wrap_content"/>
	<Button 
	    android:id="@+id/sure"
	    android:layout_width="wrap_content"
	    android:layout_height="wrap_content"
	    android:layout_below="@id/nosure"/>
</RelativeLayout>

修改MainActivity.java文件为:

package com.example.demo;

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

public class MainActivity extends Activity {
	private Button bt1;
	private Button bt2;
	private ProgressDialog pd;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		bt1=(Button) this.findViewById(R.id.nosure);
		bt2=(Button) this.findViewById(R.id.sure);
		
		bt1.setText("不确定时间");
		bt2.setText("确定时间");
		
		bt1.setOnClickListener(new OnClickListener() {
			
			@SuppressWarnings("deprecation")
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				pd=new ProgressDialog(MainActivity.this);
				//设置进度条风格为圆形
				pd.setProgressStyle(ProgressDialog.STYLE_SPINNER);
				pd.setTitle("这是标题");
				pd.setMessage("圆形进度条");
				pd.setIcon(android.R.drawable.alert_dark_frame);
				pd.setIndeterminate(true); //设置进度条的进度是否不确定
				pd.setCancelable(true);
				pd.setCanceledOnTouchOutside(false); //点击对话框外面仍然可以关闭进度条对话框
				pd.setButton("关闭", new DialogInterface.OnClickListener() {
					
					@Override
					public void onClick(DialogInterface dialog, int which) {
						// TODO Auto-generated method stub
						pd.dismiss();
					}
				});
				pd.show();
			}
		});
		
		bt2.setOnClickListener(new OnClickListener() {
			
			@SuppressWarnings("deprecation")
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				pd=new ProgressDialog(MainActivity.this);
				//设置进度条风格为圆形
				pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
				pd.setTitle("这是标题");
				pd.setMessage("垂直进度条");
				pd.setIcon(android.R.drawable.alert_dark_frame);
				pd.setIndeterminate(false); //设置进度条的进度是否不确定
				pd.setMax(100);
				pd.setSecondaryProgress(50);
				pd.setCancelable(true);
				pd.setCanceledOnTouchOutside(true);
				pd.setButton("关闭", new DialogInterface.OnClickListener() {
					
					@Override
					public void onClick(DialogInterface dialog, int which) {
						// TODO Auto-generated method stub
						pd.dismiss();
					}
				});
				pd.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;
	}

}

运行结果如下:




posted on 2014-02-10 23:26  天神Deity  阅读(294)  评论(0编辑  收藏  举报

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