pgimagepicker's Introduction

PGImagePicker

1、使用UICollectionView进行复用
2、内置了3种样式，有微博和微信的样式
3、双击放大/还原，单击返回，双指粘合缩放，长按保存图片到相册
4、可以自定义相薄

长按保存到相册需要在info.plist中加入以下隐私权限

<key>NSPhotoLibraryAddUsageDescription</key>
<string>App需要您的同意,才能访问相册</string>
<key>NSPhotoLibraryUsageDescription</key>
<string>App需要您的同意,才能访问相册</string>

如果相册权限被用户拒绝了，PGImagePicker已经设置好了引导用户去APP设置页面开启权限

CocoaPods安装

pod 'PGImagePicker'

使用

let imagePicker = PGImagePicker(currentImageView: tapView, imageViews: imageViews)
present(imagePicker, animated: false, completion: nil)

总共需要传入两个参数。第一个currentImageView是当前的UIImageView，第二个参数imageViews是需要浏览的所有图片的UIImageView ，如果只需要浏览一张图，则参数imageViews可以省略

单张图片预览

例如点击头像预览

let imagePicker = PGImagePicker(currentImageView: tapView)
present(imagePicker, animated: false, completion: nil)

设置相薄

长按保存到相册，可以自定义相薄，将图片保存到自己定义的相薄里面

imagePicker.albumName = "PGImagePicker"

设置样式

pageControlType共有3种样式样式1是当前微信的样式，样式3是当前微博的样式

let imagePicker = PGImagePicker(currentImageView: tapView, pageControlType: .type1, imageViews: imageViews)
present(imagePicker, animated: false, completion: nil)

设置代理

得到当前正在预览的图片

imagePicker.delegate = self
func imagePicker(imagePicker: PGImagePicker, didSelectImageView imageView: UIImageView, didSelectImageViewAt index: Int) {
    print("index = ", index)
}

加载网络图片

加载网络图片使用的是Kingfisher框架

引入pod

pod 'PGImagePickerKingfisher'

使用

let imagePicker = PGImagePickerKingfisher(currentImageView: tapView, imageViews: imageViews)
imagePicker.imageUrls = self.imageUrls
imagePicker.indicatorType = .activity
imagePicker.placeholder = UIImage(named: "projectlist_06")
present(imagePicker, animated: false, completion: nil)

imageUrls是图片需要加载的url地址 indicatorType、placeholder跟当前要预览的图片一致，没有可以不用设置

许可证

PGImagePicker 使用 MIT 许可证，详情见 LICENSE 文件。

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pgimagepicker's Issues

发现一个bug

如果有一个很长的tableView/collectionView,每个cell/item里有一张图片.
这种情况下是获取不了未展示的图片的frame的.

会导致一个崩溃:

▿ 21 elements
  - 0 : "0   ???                                 0x0000000123b6aba7 0x0 + 4894141351"
  - 1 : "1   ???                                 0x0000000123b6ac95 0x0 + 4894141589"
  - 2 : "2   Coll                                0x000000010a7ac7c0 main + 0"
  - 3 : "3   PGImagePicker                       0x000000010ac36300 _T013PGImagePicker12PGScrollViewC11convertRect33_47910DC33138F0D90388FDFB1D47CA6DLLSQySC6CGRectVGSo6UIViewC3for_tF + 1040"
  - 4 : "4   PGImagePicker                       0x000000010ac389f8 _T013PGImagePicker12PGScrollViewC10tapHandler33_47910DC33138F0D90388FDFB1D47CA6DLLySo7UITouchCFyycfU_ + 312"
  - 5 : "5   PGImagePicker                       0x000000010ac39ae2 _T013PGImagePicker12PGScrollViewC10tapHandler33_47910DC33138F0D90388FDFB1D47CA6DLLySo7UITouchCFyycfU_TA + 50"
  - 6 : "6   PGImagePicker                       0x000000010ac27ca9 _T0Ix_IyB_TR + 41"
  - 7 : "7   UIKit                               0x000000010b9209ec +[UIView(UIViewAnimationWithBlocks) _setupAnimationWithDuration:delay:view:options:factory:animations:start:animationStateGenerator:completion:] + 560"
  - 8 : "8   UIKit                               0x000000010b920f38 +[UIView(UIViewAnimationWithBlocks) animateWithDuration:animations:completion:] + 86"
  - 9 : "9   PGImagePicker                       0x000000010ac38884 _T013PGImagePicker12PGScrollViewC10tapHandler33_47910DC33138F0D90388FDFB1D47CA6DLLySo7UITouchCF + 1028"
  - 10 : "10  PGImagePicker                       0x000000010ac38e3c _T013PGImagePicker12PGScrollViewC10tapHandler33_47910DC33138F0D90388FDFB1D47CA6DLLySo7UITouchCFTo + 60"
  - 11 : "11  Foundation                          0x000000010ace6609 __NSFireDelayedPerform + 409"
  - 12 : "12  CoreFoundation                      0x000000010ec07374 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 20"
  - 13 : "13  CoreFoundation                      0x000000010ec07032 __CFRunLoopDoTimer + 1026"
  - 14 : "14  CoreFoundation                      0x000000010ec06bea __CFRunLoopDoTimers + 266"
  - 15 : "15  CoreFoundation                      0x000000010ebfe604 __CFRunLoopRun + 2308"
  - 16 : "16  CoreFoundation                      0x000000010ebfda89 CFRunLoopRunSpecific + 409"
  - 17 : "17  GraphicsServices                    0x0000000113c679c6 GSEventRunModal + 62"
  - 18 : "18  UIKit                               0x000000010b85ed30 UIApplicationMain + 159"
  - 19 : "19  Coll                                0x000000010a7ac7f7 main + 55"
  - 20 : "20  libdyld.dylib                       0x00000001113ebd81 start + 1"

崩溃原因:
因为没有设置frame, rect为nil, 强制解包失败!

fileprivate func convertRect(for view: UIView) -> CGRect! {
        let rootView = UIApplication.shared.keyWindow?.rootViewController?.view
        let rect = view.superview?.convert(view.frame, to: rootView)
        return rect!
    }

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