IOS图像9之自定义侧划栏(类似新浪微博Swift)

效果：

整个策划栏的实现，其实就是将一个包含tableview的view添加到了window上。

self.window?.addSubview(sliderViewController.view)

使用起来很方便，这里重点介绍下，显示一半弹出动画，以及底部整体模糊效果。

    func sliderVCDismiss(taptouch:UITapGestureRecognizer){

        UIView.animateWithDuration(0.5, animations: {()->Void in

            self.contentView.frame = CGRectMake(-DEVICE_SCREEN_WIDTH*0.6, 0, DEVICE_SCREEN_WIDTH*0.6, DEVICE_SCREEN_HEIGHT)

            self.contentView.alpha = 0.9

            }, completion: {(finished:Bool)->Void in

//              回调viewcontroller方法

                self.view.hidden=true

//                self.view.removeFromSuperview()

        })

    }

模糊效果：

func sliderViewAnimStart(mblock:sliderVCtoViewcontrollerBlock){

//        UIImageWriteToSavedPhotosAlbum(blurimageFromImage(imageFromUIView(bgView)), nil, nil, nil)

        sliderblock = mblock

        var windowview:UIView = UIView()

        var keywindown:UIView = UIView()

        windowview = UIApplication.sharedApplication().keyWindow!.rootViewController!.view

        keywindown = UIApplication.sharedApplication().keyWindow!

        blurView?.layer.contents = blurimageFromImage(imageFromUIView(windowview)).CGImage

        

        UIView.animateWithDuration(0.5, animations: {()->Void in

            self.contentView.frame = CGRectMake(0, 0, DEVICE_SCREEN_WIDTH*0.6, DEVICE_SCREEN_HEIGHT)

            self.contentView.alpha = 0.9

            }, completion: {(finished:Bool)->Void in

        })

        

    }

func blurimageFromImage(image:UIImage)->UIImage{

        var blurRadix:UInt32 = 7

        var img:CGImageRef = image.CGImage

        var inProvider:CGDataProviderRef = CGImageGetDataProvider(img)

        var bitmapdata:CFDataRef = CGDataProviderCopyData(inProvider)

        

         var inputBuffer:vImage_Buffer = vImage_Buffer()

         inputBuffer.data=(UnsafeMutablePointer<Void>)(CFDataGetBytePtr(bitmapdata))

         inputBuffer.width=(vImagePixelCount)(CGImageGetWidth(img))

         inputBuffer.height=(vImagePixelCount)(CGImageGetHeight(img))

         inputBuffer.rowBytes=CGImageGetBytesPerRow(img);

        

        var pixelBuffer:UnsafeMutablePointer<Void> = malloc(CGImageGetBytesPerRow(img) * CGImageGetHeight(img));

        

        var outputBuffer:vImage_Buffer = vImage_Buffer()

        outputBuffer.data=pixelBuffer

        outputBuffer.width=(vImagePixelCount)(CGImageGetWidth(img))

        outputBuffer.height=(vImagePixelCount)(CGImageGetHeight(img))

        outputBuffer.rowBytes=CGImageGetBytesPerRow(img);

//        var error:vImage_Error? = vImage_Error()

        var error:vImage_Error?

        error = vImageBoxConvolve_ARGB8888(&inputBuffer, &outputBuffer, nil, 0, 0, blurRadix, blurRadix, nil, UInt32(kvImageEdgeExtend))

        if (error != nil) {

            println("image error\(error)")

        }

        var colorSpace = CGColorSpaceCreateDeviceRGB()

        

        var w:Int=(Int)(outputBuffer.width)

        var h:Int=(Int)(outputBuffer.height)

        

        var ctx:CGContextRef = CGBitmapContextCreate(outputBuffer.data, w, h, 8, outputBuffer.rowBytes, colorSpace, CGImageGetBitmapInfo(image.CGImage))

        

        var imageRef:CGImageRef = CGBitmapContextCreateImage (ctx)

        var imagenew:UIImage = UIImage(CGImage:imageRef)!

        free(pixelBuffer)

        return imagenew;

    }