Android 系统操作

//得到存储卡路径
public static String getSDCardPath() {
		boolean sdCardExist = Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED); // 判断sd卡是否存在
		if (sdCardExist) {
			File sdDir = Environment.getExternalStorageDirectory();// 获取跟目录
			return sdDir.getPath();
		}
		return null;

	}