updateservice's Introduction

APK版本更新，软件下载更新，通知栏显示进度

![](http://i.imgur.com/aIf0s3r.gif)

首先你要添加权限

<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

然后只要启动一个服务就可以实现软件下载更新，通知栏显示进度

package com.example.updateservice;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;

public class MainActivity extends Activity {

Context mContext;
protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.activity_main);
	mContext = this;
	showDialog();
}

private void showDialog(){
	AlertDialog.Builder builder = new Builder(mContext);
	builder.setTitle("升级提示");
	builder.setMessage("版本：1.0.1\n大小：6.5M\n1、修改Bug\n2、增加功能");
	builder.setNegativeButton("稍后再说", new AlertDialog.OnClickListener() {
		
		@Override
		public void onClick(DialogInterface dialog, int which) {
			dialog.dismiss();
			
		}
	});
	
	builder.setPositiveButton("马上跟新", new AlertDialog.OnClickListener() {
		
		@Override
		public void onClick(DialogInterface dialog, int which) {
			dialog.dismiss();
			Intent intent = new Intent(mContext,DownloadService.class);
			intent.putExtra("url", "http://surveyapp.fy.chaoxing.com/app/LauncherDemo5.apk");
			startService(intent);
		}
	});
	builder.show();
}
}

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