**要求**
1.JDK> = 1.7(如果你在1.6上运行,你会得到一个错误“_cameras = new HashMap <>();”)
2.使用iOS 10及更高版本,您需要将“隐私 - 相机使用说明”键添加到项目的Info.plist中。这应该在'your_project / ios / your_project / Info.plist'中找到。添加以下代码:
<key>NSCameraUsageDescription</key>
<string>Your message to user when the camera is accessed for the first time</string>
<!-- Include this only if you are planning to use the camera roll -->
<key>NSPhotoLibraryUsageDescription</key>
<string>Your message to user when the photo library is accessed for the first time</string>
<!-- Include this only if you are planning to use the microphone for video recording -->
<key>NSMicrophoneUsageDescription</key>
<string>Your message to user when the microphone is accessed for the first time</string>
3.在Android上,你需要bui