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点击按钮启动一个服务（service）不影响其他的操作，在服务里进行文件下载，要求文件下载要实现断点续传，并要在通知栏里显示文件下载的进度？

android 多线程断点续传下载二

在上一节中,我们简单介绍了如何创建多任务下载,但那种还不能拿来实用,这一集我们重点通过代码为大家展示如何创建多线程断点续传下载,这在实际项目中很常用. main.xml: [html] view plaincopy <?xml version="1.0" enco...

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Android 断点续传下载

断点续传下载，其实就是记录下原来下载的位置，然后从那个位置开始下载就是了。代码如下。 /** * 作用：断点续传下载<BR> * 作者：peijiangping<BR> * 日期：2011-6-11 */ public static int doDownloadTheFil...

android 多线程断点续传下载

http://blog.csdn.net/shimiso/article/details/6763986 多线程断点续传下载,这在实际项目中很常用. main.xml: [html] view plaincopy <?xml version="1.0" encod...

Android之断点续传下载

断点续传下载，顾名思义，那就是我们在一次下载未结束时，退出下载，第二次下载时会接着第一次下载的进度继续下载。那么怎么记录第一次下载的数据呢，这里肯定就要用到数据库了。下面就是我创建数据库的一个SQLiteOpenHelper类。用来首次运行时创建数据库。 DBHelper类： 1 package c...

Android实现网络多线程断点续传下载

本示例介绍在Android平台下通过HTTP协议实现断点续传下载。我们编写的是Andorid的HTTP协议多线程断点下载应用程序。直接使用单线程下载HTTP文件对我们来说是一件非常简单的事。那么，多线程断点需要什么功能？ 1.多线程下载， 2.支持断点。使用多线程的好处：使用多线程...

android 之断点续传详解三部曲之[三] → 多任务同时下载

今天跟大家一起分享下android开发中比较难的一个环节,可能很多人看到这个标题就会感觉头很大,的确如果没有良好的编码能力和逻辑思维,这块是很难搞明白的,前面2次总结中已经为大家分享过有关技术的一些基本要领,我们先一起简单回顾下它的基本原理。三部曲之一：http://blog.csdn.net/g...

android 之断点续传详解三部曲之[二] → 断点续传下载

在上一篇中,我们简单介绍了如何创建多任务下载,但那种还不能拿来实用,这一集我们重点通过代码为大家展示如何创建多线程断点续传下载,这在实际项目中很常用. 和上一篇中一样,先来布局文件： main.xml <?xml version="1.0" encoding="utf-8"?> <...

android 之断点续传详解三部曲之[一] → 多任务下载

项目需求,需要做一个下载功能，当然理想的功能要支持多任务同时下载，断点续传的功能，我想一步一步来，首先困难摆在了多任务这里开始我的思路是在一个Service中启动下载的流操作，然后通过Service中声明一个Activity中的Handler更新UI(比如进度条。。。) 可是我发现在Service...

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