相机下方有一个黑色的底部空间

问题描述

我正在从 UITabBarController 中显示 UIImagePickerController 。

 让imagePicker = UIImagePickerController（）
 imagePicker.delegate =自我
 imagePicker.sourceType = .Camera 
 imagePicker.allowsEditing = false 
 imagePicker.showsCameraControls = false 
 
 presentViewController（imagePicker，动画：true，完成：nil）
  

我已将 showsCameraControls 显式设置为false，以将自定义叠加层视图放置在相机顶部。但是为什么底部有一个黑色空间？有帮助吗？ / p>

解决方案

相机纵横比为4：3，您必须应用变换比例才能获得全屏显示

迅速

  let screenSize = UIScreen.mainScreen（）。bounds.size 
 let AspectRatio：CGFloat = 4.0 / 3.0 
 let scale = screenSize.height / screenSize.width * AspectRatio 
 self.imagePikerViewController.cameraViewTransform = CGAffineTransformMakeScale（scale，scale）; 
  

屏幕截图

目标C

  CGSize screenSize = [[UIScreen mainScreen] bounds] .size; 
的float AspectRatio = 4.0 / 3.0; 
浮动比例= screenSize.height / screenSize.width * AspectRatio; 
 self.imagePikerViewController.cameraViewTransform = CGAffineTransformMakeScale（scale，scale）; 
  

I am presenting an UIImagePickerController from a UITabBarController.

        let imagePicker = UIImagePickerController()
        imagePicker.delegate = self
        imagePicker.sourceType = .Camera
        imagePicker.allowsEditing = false
        imagePicker.showsCameraControls = false

        presentViewController(imagePicker, animated: true, completion: nil)

I have explicitly set showsCameraControls to false to put my custom overlay view on top of camera.But why there is a black space on the bottom?any helps?

解决方案

The camera aspect ratio is 4:3,you have to apply a transform scale so that you can get full screen

Swift

let screenSize = UIScreen.mainScreen().bounds.size
let aspectRatio:CGFloat = 4.0/3.0
let scale = screenSize.height/screenSize.width * aspectRatio
self.imagePikerViewController.cameraViewTransform = CGAffineTransformMakeScale(scale, scale);

Screen shot

Objective C

CGSize screenSize = [[UIScreen mainScreen] bounds].size;
float aspectRatio = 4.0/3.0;
float scale = screenSize.height/screenSize.width * aspectRatio;
self.imagePikerViewController.cameraViewTransform = CGAffineTransformMakeScale(scale, scale);

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