xcode 如何添加 uiimagepickerview 自定义叠加层
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How to add a uiimagepickerview custom overlay
提问by Desmond
i will like to add a custom overlay on the UIImagepickerview with some custom buttons.
我想在 UIImagepickerview 上添加一个带有一些自定义按钮的自定义叠加层。
will appreciated if anyone could show me a link or 2 to the tutorial.
如果有人可以向我展示教程的链接或 2，我将不胜感激。
thanks
谢谢
回答by g_low
Here is a PhotoPicker sample code project:
这是一个 PhotoPicker 示例代码项目：
The gist is to make your own class with a .xib file with a custom toolbar, and then add that as a custom overlay. Make sure that you set your UIImagePickerController's showCameraControls property to NO.
要点是使用带有自定义工具栏的 .xib 文件创建您自己的类，然后将其添加为自定义叠加层。确保将您UIImagePickerController的 showCameraControls 属性设置为 NO。
Assuming that you have created a OverlayViewControllerclass that is a UIImagePickerControllerDelegateand has a UIImagePickerControllerpicker:
假设您创建了一个OverlayViewController类，UIImagePickerControllerDelegate并且有一个UIImagePickerController选择器：
self.picker.showsCameraControls = NO;
In addition (for iPhone), you will find that there is a difference in aspect ratio between the live camera picture and the iPhone screen size, which will give you a bar at the bottom of your screen. This can be fixed by doing a translation and scale:
另外（对于iPhone），你会发现实况摄像头图片和iPhone屏幕尺寸之间的纵横比存在差异，这会在你的屏幕底部显示一个栏。这可以通过进行翻译和缩放来解决：
CGAffineTransform translate = CGAffineTransformMakeTranslation(0.0, 25.0);
self.picker.cameraViewTransform = CGAffineTransformScale(translate, 480.0/430.0, 480.0/430.0);
self.picker.cameraOverlayView = self.view;
回答by Igor
Apple has a good tutorial, how to customize uiimagepickerview. His name is PhotoPicker
苹果有很好的教程，如何自定义uiimagepickerview。他的名字是PhotoPicker
