//MARK:-相机
letimagePicker =UIImagePickerController()
//检测相机是否可用
letisAvailable =UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.camera)
//必须首先设置sourceType然后再设置其他属性否则会出异常
imagePicker.sourceType= .photoLibrary
ifisAvailable {
imagePicker.sourceType= .camera
//如果有前置摄像头则调用前置摄像头
imagePicker.cameraDevice=UIImagePickerControllerCameraDevice.front
////是否显示控制栏,这里选择false会展示系统相机UI，如果要自定义可以将其隐藏,这里使用系统相机
imagePicker.showsCameraControls=false
}
imagePicker.delegate=self
present(imagePicker, animated:true, completion:nil)
imagePicker.allowsEditing=true
//这里会用到 UIImagePickerControllerDelegate,UINavigationControllerDelegate ,这两个代理
//MARK: -相机代理回调方法
//获取相机拍的图片
funcimagePickerController(_picker:UIImagePickerController, didFinishPickingMediaWithInfo info: [String:Any]) {
dismiss(animated:true, completion:nil)
ifletphoto = info[UIImagePickerControllerOriginalImage]as!UIImage?{
referenceImage= photo
referenceImageBtn.setImage(photo, for:UIControlState.normal)
}
}
//点击取消的回调
funcimagePickerControllerDidCancel(_picker:UIImagePickerController) {
dismiss(animated:true, completion:nil)
}