判断SD卡剩余空间是否可用

iteye_1503

于 2011-11-01 14:36:00 发布

阅读量159

点赞数

本文介绍了一个用于检查设备可用存储空间的Java API实现。该API包括获取当前可用存储大小的方法及判断是否低于预设阈值的功能。这对于确保应用程序有足够的空间运行至关重要。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

private static final long LOW_STORAGE_THRESHOLD = 1024 * 1024 * 10; public static long getAvailableStorage() { String storageDirectory = null; storageDirectory = Environment.getExternalStorageDirectory().toString(); Log.d(TAG, "getAvailableStorage. storageDirectory : " + storageDirectory); try { StatFs stat = new StatFs(storageDirectory); avaliableSize = ((long) stat.getAvailableBlocks() * (long) stat.getBlockSize()); Log.d(TAG, "getAvailableStorage. avaliableSize : " + avaliableSize); return avaliableSize; } catch (RuntimeException ex) { // if we can't stat the filesystem then we don't know how many // free bytes exist. It might be zero but just leave it // blank since we really don't know. Log.e(TAG, "getAvailableStorage - exception. return 0"); return 0; } } public static boolean checkAvailableStorage() { Log.d(TAG,"checkAvailableStorage E"); if(getAvailableStorage() < LOW_STORAGE_THRESHOLD) { return false; } return true; }