我已经尝试了很长时间,但无法解决问题,但基本上我想在标签和按钮后面的背景中显示实时摄像头画面。这是我正在使用的使相机出现的代码
- (void)viewDidLoad {
[super viewDidLoad];
AVCaptureSession *session = [[AVCaptureSession alloc] init];
session.sessionPreset = AVCaptureSessionPresetHigh;
AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
NSError *error = nil;
AVCaptureDeviceInput *input = [AVCaptureDeviceInput deviceInputWithDevice:device error:&error];
[session addInput:input];
AVCaptureVideoPreviewLayer *newCaptureVideoPreviewLayer = [[AVCaptureVideoPreviewLayer alloc] initWithSession:session];
newCaptureVideoPreviewLayer.frame = self.view.bounds;
[self.view addSublayer:newCaptureVideoPreviewLayer.view];
[self.view sendSubviewToBack:newCaptureVideoPreviewLayer.view];
[session startRunning];
}
我不知道如何将它放在已加载 View 的标签后面。任何帮助将不胜感激!
最佳答案
您只需要使用 sendSubviewToBack
在后台添加 View
更多详情可以查看Apple AVCam Example
sendSubviewToBack: Moves the specified subview so that it appears behind its siblings.
AVCaptureVideoPreviewLayer *newCaptureVideoPreviewLayer = [[AVCaptureVideoPreviewLayer alloc] initWithSession:session];
newCaptureVideoPreviewLayer.frame = self.view.bounds;
[self.view.layer addSublayer:newCaptureVideoPreviewLayer];
[session startRunning];
或
[[self.view superView] insertSubview:newCaptureVideoPreviewLayer belowSubview:self.view];
关于ios - 在 UILabels 后面设置背景相机,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/34939665/