Android获得sdcard大小及使用情况信息详解编程语言

public static SDCardInfo getSDCardInfo() { String sDcString = android.os.Environment.getExternalStorageState(); if (sDcString.equals(android.os.Environment.MEDIA_MOUNTED)) { File pathFile = android.os.Environment.getExternalStorageDirectory(); try { android.os.StatFs statfs = new android.os.StatFs(pathFile.getPath()); // 获取SDCard上BLOCK总数 long nTotalBlocks = statfs.getBlockCount(); // 获取SDCard上每个block的SIZE long nBlocSize = statfs.getBlockSize(); // 获取可供程序使用的Block的数量 long nAvailaBlock = statfs.getAvailableBlocks(); // 获取剩下的所有Block的数量(包括预留的一般程序无法使用的块) long nFreeBlock = statfs.getFreeBlocks(); SDCardInfo info = new SDCardInfo(); // 计算SDCard 总容量大小MB info.total = nTotalBlocks * nBlocSize; // 计算 SDCard 剩余大小MB info.free = nAvailaBlock * nBlocSize; return info; } catch (IllegalArgumentException e) { Log.e(LOG_TAG, e.toString()); return null; }

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