我怎么能检查多少可用空间SD卡安装在Android设备了？ [英] How can I check how much free space an SD card mounted on an Android device has?

问题描述

我如何以编程方式检查多少可用空间SD卡安装在Android设备上了？

How can I programmatically check how much free space an SD card mounted on an Android device has?

推荐答案

要获得外部SD卡的用自由空间来显示一些它同意菜单 - >设置 - > SD卡和手机存储的号码，使用以下code：

To get the external SD card's available "free" space to show a number which agrees with the Menu->Settings->SD card and phone storage's number, use the following code:

StatFs stat = new StatFs(Environment.getExternalStorageDirectory().getPath());
double sdAvailSize = (double)stat.getAvailableBlocks()
                   * (double)stat.getBlockSize();
//One binary gigabyte equals 1,073,741,824 bytes.
double gigaAvailable = sdAvailSize / 1073741824;

相关文章：<一个href="http://developer.android.com/reference/android/os/StatFs.html">http://developer.android.com/reference/android/os/StatFs.html

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