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我想连接一个 IPCAM 并用 videoView 和 mediaplayer 显示它。无论如何，尝试连接相机时出现未知错误。所以我想知道是否确实与相机有联系。有没有办法代替媒体播放器返回代码来测试 IPCAM 连接并获得一些信息作为回报？