         self.register(WYComposePictureViewCell.self, forCellWithReuseIdentifier: "cell")
         //设置数据源
         self.dataSource = self
+        self.delegate = self
     }
     
     func addImage(image:UIImage) {

    override init(frame: CGRect) {
        super.init(frame: frame)
        setupUI()
    }
    
    required init?(coder aDecoder: NSCoder) {

    var image : UIImage? {
        
        didSet{
            if image == nil {
                let image1 = UIImage(named: "compose_pic_add")
                let image2 = UIImage(named: "compose_pic_add_highlighted")
                imageView.image = image1
                imageView.highlightedImage = image2
            }else{
                
                imageView.image = image
                //这里是处理当点击不是加号的时候图片有变动的问题
                imageView.highlightedImage = image
            }
            //当cell没有图片的时候设置叉叉隐藏
            deleteButton.isHidden = image == nil
        }
    }

