Android 推斷SD卡是否存在及容量查詢

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首先先要加入許可權<uses-permission android :name ="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/><uses-permission android: name="android.permission.WRITE_EXTERNAL_STIRAGE"/>

推斷SD卡是否存在

/* * 推斷SD卡是否存在 */private boolean ExitSDcard() {if (Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_UNMOUNTED)) {return true;} else {return false;}}

<span style="white-space:pre"></span>/* * 查看SD卡總容量 */@SuppressWarnings("deprecation")public long getSDAllSize() {String path = Environment.getExternalStorageDirectory().getPath();StatFs sf = new StatFs(path);int blockSize = sf.getBlockSize();int allBlocks = sf.getBlockCount();return (allBlocks * blockSize) / 1024 / 1024;}

/* *  * 查看SD卡剩餘空間 */@SuppressWarnings("deprecation")public long getSDFreeSize() {String path = Environment.getExternalStorageDirectory().getPath();StatFs statFs = new StatFs(path);int size = statFs.getBlockSize();int freeBlocks = statFs.getAvailableBlocks();return (freeBlocks * size) / 1024 / 1024;}

Android 推斷SD卡是否存在及容量查詢