获取磁盘存储目录

/**

* Get a usable cache directory (external if available, internal otherwise).

*

* @param context The context to use

* @param uniqueName A unique directory name to append to the cache dir

* @return The cache dir

*/

public static File getDiskCacheDir(Context context, String uniqueName) {

// Check if media is mounted or storage is built-in, if so, try and use external cache dir

// otherwise use internal cache dir

final String cachePath =

Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState()) ||

!isExternalStorageRemovable() ? getExternalCacheDir(context).getPath() :

context.getCacheDir().getPath();

return new File(cachePath + File.separator + uniqueName);

}