iphone – 强制相机视图在风景与方向锁定
发布时间:2020-12-15 01:48:44 所属栏目:百科 来源:网络整理
导读:我正在开发一种增强现实游戏,当设备的方向锁定打开时,我遇到了摄像机视图方向的问题. 我正在使用此代码加载视图内的摄像机视图: AVCaptureSession *session = [[AVCaptureSession alloc] init];AVCaptureVideoPreviewLayer *captureVideoPreviewLayer = [[A
我正在开发一种增强现实游戏,当设备的方向锁定打开时,我遇到了摄像机视图方向的问题.
我正在使用此代码加载视图内的摄像机视图: AVCaptureSession *session = [[AVCaptureSession alloc] init]; AVCaptureVideoPreviewLayer *captureVideoPreviewLayer = [[AVCaptureVideoPreviewLayer alloc] initWithSession:session]; captureVideoPreviewLayer.frame = self.sessionView.bounds; [self.sessionView.layer addSublayer:captureVideoPreviewLayer]; CGRect bounds=sessionView.layer.bounds; captureVideoPreviewLayer.videoGravity = AVLayerVideoGravityResizeAspectFill; captureVideoPreviewLayer.bounds=bounds; captureVideoPreviewLayer.orientation = [[UIDevice currentDevice] orientation]; captureVideoPreviewLayer.position=CGPointMake(CGRectGetMidX(bounds),CGRectGetMidY(bounds)); AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo]; // device.position ; NSError *error = nil; AVCaptureDeviceInput *input = [AVCaptureDeviceInput deviceInputWithDevice:device error:&error]; if ([device hasTorch]) { ([device supportsAVCaptureSessionPreset:AVCaptureSessionPreset1280x720]); } else { ([device supportsAVCaptureSessionPreset:AVCaptureSessionPreset640x480]); } [session addInput:input]; [session startRunning]; 为了使应用程序的方向保持正确,我只选择了Xcode应用程序摘要中的那个框,其中包含: - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { return ((interfaceOrientation == UIInterfaceOrientationLandscapeRight)); } 当设备开启方向锁定(双击主页按钮,向右滑动,点击方向图标)时,摄像机视图将显示为纵向,其余部分处于横向状态.有没有什么办法解决这一问题?根据我的阅读,当用户打开游戏时,无法关闭方向锁定. 解决方法
您的预览图层未定位的原因是您使用了已弃用的API,而且您没有在更改设备方向时更新视频方向.
>删除已弃用的API,即代码中的API captureVideoPreviewLayer.orientation 使用videoOrientation属性,即 captureVideoPreviewLayer.connection.videoOrientation >更新shouldAutorotate中的视频方向,如下所示: - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { if(interfaceOrientation == UIInterfaceOrientationLandscapeRight) { captureVideoPreviewLayer.connection.videoOrientation = AVCaptureVideoOrientationLandscapeRight } // and so on for other orientations return ((interfaceOrientation == UIInterfaceOrientationLandscapeRight)); } (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |