Android获取SdCard路径及剩余容量

Android获取SdCard路径及剩余容量

具体代码如下所示：

 

 

/**
     * 获取SdCard路径
     */
    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;
    }
    
    /**
     * 获取存储卡的剩余容量，单位为字节
     * @param filePath
     * @return availableSpare
     */

    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;

    }

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