自我剖析：工作五年多，以项目为驱动，重复工作，缺少钻研精神。
随手记录一些东西，偏向于源码的
day 1 ：ios UIImagePickerController
UIImagePickerController 继承UINavigationController，可通过init(navigationBarClass:AnyClass?, toolbarClass:AnyClass?)自定义导航栏
open class func isSourceTypeAvailable(_ sourceType: UIImagePickerController.SourceType) -> Bool // returns YES if source is available (i.e. camera present) //判断类型是否有效
open class func availableMediaTypes(for sourceType: UIImagePickerController.SourceType) -> [String]? // returns array of available media types (i.e. kUTTypeImage)//有效的类型
@available(iOS 4.0, *)
open class func isCameraDeviceAvailable(_cameraDevice:UIImagePickerController.CameraDevice) ->Bool// returns YES if camera device is available //相机是否有效
@available(iOS 4.0, *)
open class func isFlashAvailable(for cameraDevice: UIImagePickerController.CameraDevice) -> Bool // returns YES if camera device supports flash and torch. //是否支持flash和torch
@available(iOS 4.0, *)
open class func availableCaptureModes(for cameraDevice: UIImagePickerController.CameraDevice) -> [NSNumber]? // returns array of NSNumbers (UIImagePickerControllerCameraCaptureMode) //
weak open var delegate: (UIImagePickerControllerDelegate & UINavigationControllerDelegate)? //代理写法
open var sourceType: UIImagePickerController.SourceType // default value is UIImagePickerControllerSourceTypePhotoLibrary.
open var mediaTypes: [String]
// default value is an array containing kUTTypeImage.
@available(iOS 3.1, *)
open var allowsEditing: Bool // replacement for -allowsImageEditing; default value is NO.
@available(iOS 11.0, *)
open var imageExportPreset: UIImagePickerController.ImageURLExportPreset // default value is UIImagePickerControllerImageExportPresetCompatible.
// video properties apply only if mediaTypes includes kUTTypeMovie
@available(iOS 3.1, *)
open var videoMaximumDuration: TimeInterval // default value is 10 minutes.
@available(iOS 3.1, *)
open var videoQuality: UIImagePickerController.QualityType // default value is UIImagePickerControllerQualityTypeMedium. If the cameraDevice does not support the videoQuality, it will use the default value.
@available(iOS 11.0, *)
open var videoExportPreset: String // videoExportPreset can be used to specify the transcoding quality for videos (via a AVAssetExportPreset* string). If the value is nil (the default) then the transcodeQuality is determined by videoQuality instead. Not valid if the source type is UIImagePickerControllerSourceTypeCamera
// camera additions available only if sourceType is UIImagePickerControllerSourceTypeCamera.
@available(iOS 3.1, *)
open var showsCameraControls: Bool // set to NO to hide all standard camera UI. default is YES
@available(iOS 3.1, *)
open var cameraOverlayView: UIView? // set a view to overlay the preview view.
@available(iOS 3.1, *)
open var cameraViewTransform: CGAffineTransform // set the transform of the preview view.
@available(iOS 3.1, *)
open func takePicture()
// programatically initiates still image capture. ignored if image capture is in-flight.
// clients can initiate additional captures after receiving -imagePickerController:didFinishPickingMediaWithInfo: delegate callback
@available(iOS 4.0, *)
open func startVideoCapture() ->Bool
@available(iOS 4.0, *)
open func stopVideoCapture()
@available(iOS 4.0, *)
open var cameraCaptureMode: UIImagePickerController.CameraCaptureMode // default is UIImagePickerControllerCameraCaptureModePhoto
@available(iOS 4.0, *)
open var cameraDevice: UIImagePickerController.CameraDevice // default is UIImagePickerControllerCameraDeviceRear
@available(iOS 4.0, *)
open var cameraFlashMode: UIImagePickerController.CameraFlashMode // default is UIImagePickerControllerCameraFlashModeAuto.
enum SourceType :Int{
case photoLibrary
case camera
case savedPhotosAlbum
}
enum QualityType :Int{
case typeHigh// highest quality
case typeMedium // medium quality, suitable for transmission via Wi-Fi
case typeLow // lowest quality, suitable for tranmission via cellular network
@available(iOS4.0, *)
case type640x480// VGA quality
@available(iOS5.0, *)
case typeIFrame1280x720
@available(iOS5.0, *)
case typeIFrame960x540
}
enum CameraCaptureMode :Int{
case photo
case video
}
enum CameraDevice :Int{
case rear
case front
}
enum CameraFlashMode :Int{
case off
case auto
case on
}
enum ImageURLExportPreset :Int{//@available(iOS 11.0, *)
case compatible
case current
}
public struct InfoKey : Hashable, Equatable, RawRepresentable {
publicinit(rawValue:String)
}
UIImagePickerController.InfoKey
public static let mediaType: UIImagePickerController.InfoKey
public static let originalImage: UIImagePickerController.InfoKey // a UIImage
public static let editedImage: UIImagePickerController.InfoKey // a UIImage
public static let cropRect: UIImagePickerController.InfoKey // an NSValue (CGRect)
public static let mediaURL: UIImagePickerController.InfoKey // an NSURL
@available(iOS, introduced: 4.1, deprecated: 11.0, message: "Replace with public API: UIImagePickerControllerPHAsset")
public static let referenceURL: UIImagePickerController.InfoKey // an NSURL that references an asset in the AssetsLibrary framework
@available(iOS 4.1, *)
public static let mediaMetadata: UIImagePickerController.InfoKey // an NSDictionary containing metadata from a captured photo
@available(iOS 9.1, *)
public static let livePhoto: UIImagePickerController.InfoKey // a PHLivePhoto
@available(iOS 11.0, *)
public static let phAsset: UIImagePickerController.InfoKey // a PHAsset
@available(iOS 11.0, *)
public static let imageURL: UIImagePickerController.InfoKey // an NSURL
public protocol UIImagePickerControllerDelegate :NSObjectProtocol{
@available(iOS 2.0, *)
optional public func imagePickerController(_picker:UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey:Any])
@available(iOS 2.0, *)
optional public func imagePickerControllerDidCancel(_picker:UIImagePickerController)
}
// Adds a photo to the saved photos album. The optional completionSelector should have the form:
// - (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo;
//将照片添加到已保存的相册中,有时会crash。可以尝试下先将image转为png,再存储。而且图片不应过大，过大也会导致崩溃。
public func UIImageWriteToSavedPhotosAlbum(_image:UIImage,_completionTarget:Any?,_completionSelector:Selector?,_contextInfo:UnsafeMutableRawPointer?)
// Is a specific video eligible to be saved to the saved photos album? //视频是否可以保存
@available(iOS 3.1, *)
public func UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(_videoPath:String) ->Bool
// Adds a video to the saved photos album. The optional completionSelector should have the form:
// - (void)video:(NSString *)videoPath didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo;//将视频添加到已保存的相册中
@available(iOS 3.1, *)
public func UISaveVideoAtPathToSavedPhotosAlbum(_videoPath:String,_completionTarget:Any?,_completionSelector:Selector?,_contextInfo:UnsafeMutableRawPointer?)
next：PHAsset