Swift Upload Avatar

Haven't written a blog for a long time, today specially wrote this, is also one side to imitate others to write the demo, the annotation part is Needed. Please refer to the students who need it.

@IBAction func headimagebtnpage () {//upload Avatar

Let Actionsheet = Uialertcontroller (title: "upload avatar", message:nil, preferredstyle:. Actionsheet)

Let cancelbtn = uialertaction (title: "cancel", style:.) Cancel, Handler:nil)

//

//

Let Takephotos = uialertaction (title: "take pictures", style:.) destructive, Handler: {

(action:uialertaction), Void in

Determine if you can take a photo, open the camera if you can

If Uiimagepickercontroller.issourcetypeavailable (. Camera) {

Let picker = Uiimagepickercontroller ()

Picker.sourcetype =. Camera

Picker.delegate = Self

Picker.allowsediting = True

Self.presentviewcontroller (picker, animated:true, Completion:nil)

//

//            }

Else

//            {

Print ("simulate The camera cannot be turned on, please use in the real machine");

//            }

//

//        })

Let Selectphotos = uialertaction (title: "album selection", style:.) Default, Handler: {

(action:uialertaction)

-Void in

Call album feature to open album

Let picker = Uiimagepickercontroller ()

Picker.sourcetype =. Photolibrary

Picker.delegate = Self

Picker.allowsediting = True

Self.presentviewcontroller (picker, animated:true, Completion:nil)

//

//        })

Actionsheet.addaction (cancelbtn)

Actionsheet.addaction (TAKEPHOTOS)

Actionsheet.addaction (SELECTPHOTOS)

Self.presentviewcontroller (actionsheet, animated:true, Completion:nil)

//

}

}

Mark:imagepickercontroller Agent

Func imagepickercontroller (picker:uiimagepickercontroller, didfinishpickingmediawithinfo info: [string:anyobject]) {

Let type:string = (info[uiimagepickercontrollermediatype] as! String)

When the selection type is a picture

if type = = "head_icon_demo" {

Fix the position of the picture

Let image = Fixorientation ((info[uiimagepickercontrolleroriginalimage] as! UIImage))

Turn the picture into NSData first

Let data = UIImageJPEGRepresentation (image, 0.5)

Path to Picture saving

Place the picture in the Documents folder of the sandbox

Home Directory

Let homedirectory = Nshomedirectory ()

Let documentpath = homedirectory + "/documents"

File Manager

Let Filemanager:nsfilemanager = Nsfilemanager.defaultmanager ()

Copy the data object that you just converted into a sandbox and save it as Image.png

do {

Try Filemanager.createdirectoryatpath (documentpath, withintermediatedirectories:true, Attributes:nil)

}

Catch _ {

}

Filemanager.createfileatpath (documentpath.stringbyappendingstring ("/image.png"), contents:data, Attributes:nil)

Get the full path of the picture in the sandbox after the selection

Let filepath:string = String (format: "%@%@", documentpath, "/image.png")

Print ("filePath:" + FilePath)

Send request to upload Avatar network request

Alamofire.upload (. POST, "http://192.168.3.16:9060/client/updateHeadUrl", Multipartformdata: {multipartformdata in

Let Lastdata = NSData (contentsoffile:filepath)

//

Multipartformdata.appendbodypart (data:lastdata!, name: "image")

//

}, encodingcompletion: {response in

picker.dismissviewcontrolleranimated (true, Completion:nil)

Switch response {

Case. Success (let upload, _, _):

Upload.responsejson (completionhandler: {(response) in

Print (response)

Self.imageView.image = UIImage (data:data!)

//

//                        })

//

Case. Failure (let encodingerror):

Print (encodingerror)

//                    }

//                })

}

}

Func fixorientation (aimage:uiimage)-UIImage {//handling avatar Picture Angle Issues

No-op If the orientation is already correct

If aimage.imageorientation = =. Up {

Return Aimage

}

We need to calculate the proper transformation to make the image upright.

We do it on 2 steps:rotate if left/right/down, and then flip if Mirrored.

var transform:cgaffinetransform = cgaffinetransformidentity

Switch Aimage.imageorientation {

Case. Down,. Downmirrored:

Transform = cgaffinetransformtranslate (transform, aImage.size.width, aImage.size.height)

Transform = cgaffinetransformrotate (transform, cgfloat (m_pi))

Case. Left,. Leftmirrored:

Transform = cgaffinetransformtranslate (transform, aImage.size.width, 0)

Transform = cgaffinetransformrotate (transform, cgfloat (m_pi_2))

Case. Right,. Rightmirrored:

Transform = cgaffinetransformtranslate (transform, 0, aImage.size.height)

Transform = cgaffinetransformrotate (transform, cgfloat (-m_pi_2))

Default

Break

}

Switch Aimage.imageorientation {

Case. Upmirrored,. Downmirrored:

Transform = cgaffinetransformtranslate (transform, aImage.size.width, 0)

Transform = Cgaffinetransformscale (transform,-1, 1)

Case. Leftmirrored,. Rightmirrored:

Transform = cgaffinetransformtranslate (transform, aImage.size.height, 0)

Transform = Cgaffinetransformscale (transform,-1, 1)

Default

Break

}

Now we draw the underlying cgimage into a new context, applying the transform

Calculated Above.

Here you need to pay attention to the next cgimagegetbitmapinfo, its type is Int32, cgimagegetbitmapinfo (aimage.cgimage). rawValue, It's not an error to Write.

Let ctx:cgcontextref = cgbitmapcontextcreate (nil, int (aImage.size.width), int (aImage.size.height), Cgimagegetbitspercomponent (aimage.cgimage), 0, cgimagegetcolorspace (aimage.cgimage), cgimagegetbitmapinfo ( Aimage.cgimage). rawValue)!

CGCONTEXTCONCATCTM (ctx, Transform)

Switch Aimage.imageorientation {

Case. Left,. Leftmirrored,. Right,. Rightmirrored:

Grr ...

Cgcontextdrawimage (ctx, cgrectmake (0, 0, aImage.size.height, aImage.size.width), Aimage.cgimage)

Default

Cgcontextdrawimage (ctx, cgrectmake (0, 0, aImage.size.width, aImage.size.height), Aimage.cgimage)

}

And now we just create a new UIImage from the drawing context

Let Cgimg:cgimageref = Cgbitmapcontextcreateimage (ctx)!

Let Img:uiimage = UIImage (cgimage:cgimg)

return img

}

Swift Upload Avatar