UIPickerController留下黑色底栏

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我使用下面的代码与它的覆盖视图一起显示UIPickerController：UIPickerController留下黑色底栏

-(void) viewDidLoad{ 
    self.overlayView = [[OverlayViewController alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; 
    self.overlayView.delegate = self; 
    if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) 
    { 
     imagePickerController = [[UIImagePickerController alloc] init]; 
     imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera; 
     imagePickerController.modalPresentationStyle = UIModalPresentationFullScreen; 
     imagePickerController.cameraOverlayView.frame=self.view.frame; 
     imagePickerController.showsCameraControls = NO; 
     imagePickerController.navigationBarHidden = YES; 
     imagePickerController.toolbarHidden = YES; 
    //imagePickerController.cameraViewTransform = CGAffineTransformScale(imagePickerController.cameraViewTransform, 1.0, 1.3); 
     imagePickerController.delegate = self.overlayView; 
     // as a delegate we will be notified when pictures are taken and when to dismiss the image picker 

     [self.view addSubview:imagePickerController.view]; 
     imagePickerController.cameraOverlayView =self.overlayView.view; 
    } else { 
     [self.view addSubview:self.overlayView.view]; 

    } 
}

但是屏幕保持iPhone在画像时在底部显示一个黑条。您可能会在所附的屏幕截图中看到横幅中没有横条。如何解决它？

来源

2016-01-04 Fabrizio Bartolomucci

看起来overlayView是以编程方式创建的，您需要调整overlayView的模式（Scale to Fill，Aspect Fit，..）或调整摄像头视图的大小。在您的肖像截图中，相机视图适合主视图，并且由于相机（4：3）和iPhone屏幕（16：9）的高宽比不同，您会看到黑条。在您的横向屏幕截图中，似乎缩放了相机视图以填充屏幕，但图像在顶部和底部被裁剪。 – iCode

那我应该怎么做呢？我不能依靠未来设备的最终尺寸来正确地加热屏幕......是不是有办法填满屏幕，所以它是？ –

为overlayView我坦率地说，没有其他方式来创建它，但编程。甚至连UIImagePicker控制器都没有Storyboard对应物，关于它的overlayView怎么说？！ –

我想这个问题：How to get the custom overlay for UIImagePicker camera to be full screen in iOS 7?是大约相同的问题，你可以在那里找到答案。

来源

2016-01-04 21:19:32 iCode

我实现了其作为线程建议在故事板插入后的viewController：

-(void) viewDidLoad{ 
    self.overlayView = [[OverlayViewController alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; 
    self.overlayView.delegate = self; 
    if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) 
    { 
     imagePickerController = [[UIImagePickerController alloc] init]; 
     imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera; 
     imagePickerController.modalPresentationStyle = UIModalPresentationFullScreen; 
     imagePickerController.cameraOverlayView.frame=self.view.frame; 
     imagePickerController.showsCameraControls = NO; 
     imagePickerController.navigationBarHidden = YES; 
     imagePickerController.toolbarHidden = YES; 

     //imagePickerController.cameraViewTransform = CGAffineTransformScale(imagePickerController.cameraViewTransform, 1.0, 1.3); 
     imagePickerController.delegate = self.overlayView; 
     // as a delegate we will be notified when pictures are taken and when to dismiss the image picker 
     self.overlayView=[self.storyboard instantiateViewControllerWithIdentifier:@"OverlayViewController"]; 
     [self.view addSubview:imagePickerController.view]; 
     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(showSlider) name:@"showSlider" object:nil]; 
     imagePickerController.cameraOverlayView =self.overlayView.view; 
     CGSize screenSize = [[UIScreen mainScreen] bounds].size; 
     float cameraAspectRatio = 4.0/4.0; //! Note: 4.0 and 4.0 works 
     float imageWidth = floorf(screenSize.width * cameraAspectRatio); 
     float scale = ceilf((screenSize.height/imageWidth) * 10.0)/10.0; 
     self.imagePickerController.cameraViewTransform = CGAffineTransformMakeScale(scale, scale); 
     } else { 
     [self.view addSubview:self.overlayView.view]; 
    } 
}

而事实上事情的作品扭捏cameraAspectRatio到4.0，4.0后的罚款。然而，当在风景中展示应用时，图像和控制会逆转。这就是我的门把手所显示的。此外，当我将iPhone指向上方时，图像横向移动，反之亦然。它可能是固定的或我需要放弃景观选项？

来源

2016-01-05 11:25:32

UIPickerController留下黑色底栏

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