SD卡作为手机的扩展存储设备，在手机中充当硬盘角色，可以让我们手机存放更多的数据以及多媒体等大体积文件。因此查看SD卡的内存就跟我们查看硬盘的剩余空间一样，是我们经常操作的一件事，那么在Android开发中，我们如何能获取SD卡的内存容量呢？首先，要获取SD卡上面的信息，必须先对SD卡有访问的权限，因此第一件事就是需要添加访问扩展设备的权限。 <uses-permission...

问答 2016-06-03 来自：开发者社区

Android手机内存卡不能写入文件

在学习中，使用http下载文件，不能写进内存卡，也不能读取文件，但平常使用没问题。写的代码在别人手机可以使用

问答 2016-06-01 来自：开发者社区

关于Android手机内存卡不能写入文件

在学习中，使用http下载文件，不能写进内存卡，也不能读取文件，但平常使用没问题。写的代码在别人手机可以使用

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