ZYQAssetPickerController的使用，不错的图片选择

import UIKit

 

class ViewController: UIViewController,ZYQAssetPickerControllerDelegate,UIImagePickerControllerDelegate,UINavigationControllerDelegate{

 

    var imageArray  = NSMutableArray()

    let moreThan:Int = 8

    

    @IBAction func chooseBtn(sender: UIButton) {

        

        let picker = ZYQAssetPickerController()

        picker.maximumNumberOfSelection = self.moreThan+1-self.imageArray.count

        picker.assetsFilter = ALAssetsFilter.allPhotos()

        picker.showEmptyGroups = false

        picker.delegate = self

        

        picker.selectionFilter = NSPredicate(block: { (evaluatedObject, bindings) -> Bool in

            let a = evaluatedObject as! ALAsset

            a.valueForProperty(ALAssetPropertyType)

            if(a.isEqual(ALAssetTypeVideo) == true){

                let b = a.valueForProperty(ALAssetPropertyDuration).doubleValue

                return b >= 5;

            }else{

                return true

            }

        })

        self.presentViewController(picker, animated: true, completion: nil)

    }

    

    func assetPickerController(picker: ZYQAssetPickerController!, didFinishPickingAssets assets: [AnyObject]!) {

        

        dispatch_async(dispatch_get_global_queue(0, 0)) { () -> Void in

            

            if(self.imageArray.count+assets.count-1>=self.moreThan){

                self.imageArray.removeLastObject()

            }

            for i in 0..<assets.count {

                let  ass = assets[i] as! ALAsset

                let  ass1 = ass.defaultRepresentation()

                let  ass2 = ass1.fullScreenImage().takeUnretainedValue()

                let image = UIImage(CGImage:ass2)

                let data = UIImageJPEGRepresentation(image, 0.1);

                self.imageArray.insertObject(data!, atIndex: 0)

            }

            dispatch_async(dispatch_get_main_queue(), { () -> Void in

                

            })

        }

    }

 

    override func viewDidLoad() {

        super.viewDidLoad()

    }

 

    override func didReceiveMemoryWarning() {

        super.didReceiveMemoryWarning()

    }

    

 

}