Android编程获取SD卡路径及剩余容量的方法

public static String getExternalStoragePath() { // 获取SdCard状态 String state = android.os.Environment.getExternalStorageState(); // 判断SdCard是否存在并且是可用的 if (android.os.Environment.MEDIA_MOUNTED.equals(state)) { if (android.os.Environment.getExternalStorageDirectory().canWrite()) {   return android.os.Environment.getExternalStorageDirectory().getPath(); } } return null;}public static long getAvailableStore(String filePath) { // 取得sdcard文件路径 StatFs statFs = new StatFs(filePath); // 获取block的SIZE long blocSize = statFs.getBlockSize(); // 获取BLOCK数量 // long totalBlocks = statFs.getBlockCount(); // 可使用的Block的数量 long availaBlock = statFs.getAvailableBlocks(); // long total = totalBlocks * blocSize; long availableSpare = availaBlock * blocSize; return availableSpare;}