iOS相机定制:如何实现网格线? [英] iOS Camera Customization: How to implement Grid Lines?

问题描述

我可以使用闪光灯功能，访问照片库并使用后置/前置摄像头.

I am able to use the flash feature, access the photo gallery, and use the rear/front camera.

我想实现在用户拍照时显示的网格线.

I would like to implement grid lines that display when the user is taking a photo.

有什么想法吗?

推荐答案

创建一个UIImageView用于cameraOverlayView.

假设您有一个名为yourImagePickerController的UIImagePickerController，并且还具有一个名为overlay.png的图像文件作为网格线".制作网格线图像文件时，请确保使用透明背景-而不是白色.

Assuming you've got a UIImagePickerController named yourImagePickerController and also that you've got an image file named overlay.png as your 'grid lines'. When making your grid line image file, be sure to use a transparent background - not opaque white.

UIImageView *overlayImage = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"overlay.png"]];

CGRect overlayRect = CGRectMake(0, 0, overlayImage.image.size.width, overlayImage.image.size.height);

[overlayImage setFrame:overlayRect];

[yourImagePickerController setCameraOverlayView:overlayImage];

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