在- (void)layoutSubview 和 - (void)setEditing:(BOOL)editing animated:(BOOL)animated 中新增

 UIImage *selectImg = [UIImage imageNamed:@"im_select_sign"];
    UIImage *disSelectImg = [UIImage imageNamed:@"im_disSelect_sign"];
    
    for (UIControl *control in self.subviews){
        if ([control isMemberOfClass:NSClassFromString(@"UITableViewCellEditControl")]){
            for (UIView *v in control.subviews)
            {
                if ([v isKindOfClass: [UIImageView class]]) {
                    UIImageView *imgView=(UIImageView *)v;
                    if (self.selected) {
                        imgView.image = selectImg;;
                    } else {
                        imgView.image = disSelectImg;
                    }
                }
            }
        }
    }

不過此方法只能夠更改圖片, 圖片的位置沒辦法修改,

比如像微信那樣圖片和頭像的Y軸中心相等沒辦法做到, 想要做到微信那樣只有自己自定義