OC-仿探探的卡片切换

主要是采用类似UITableView的delegate与dataSource思维来构造,同时参考别人Dome并进行改进完善

使用方法

// 懒加载 并设置代理数据源
- (HWDragCardView *)contentView {
    if (!_contentView) {
        CGFloat w = WidthScale(326);
        CGFloat h = HeightScale(439);
        CGFloat x = (CCWidth-w)/2;
        _contentView = [[HWDragCardView alloc] initWithFrame:CGRectMake(x, 80, w, h) style:HWDragStyleUpOverlay];
        _contentView.delegate = self;
        _contentView.dataSource = self;
        _contentView.remindNumber = 1; // 设置剩余提示数量
    }
    return _contentView;
}

数据源方法

注意:自定义cell必须继承HWDragCardCell

- (NSInteger)numberOfIndragCardView:(HWDragCardView *)dragCardView {
    return self.dataSources.count;
}

- (HWDragCardCell *)dragCardView:(HWDragCardView *)dragCardView cellForRowAtIndex:(NSInteger)index {
    FateCell *cell = [FateCell hw_loadViewFromNib];
    NSString *imageName = self.dataSources[index];
    cell.type = FateCellTypeDefault;
    cell.imageName = imageName;
    cell.seeClickBlcok = ^{
        NSLog(@"点击了查看详情");
    };
    return cell;
}

代理方法

// 拖拽中
- (void)dragCardView:(HWDragCardView *)dragCardView dragDropDirection:(HWDragDropDirection)dragDropDirection widthRatio:(CGFloat)widthRatio heightRatio:(CGFloat)heightRatio currentCell:(id)currentCell {
    FateCell *cell = (FateCell *)currentCell;
    CGFloat scale = 1 + ((kBoundaryRatio > fabs(widthRatio) ? fabs(widthRatio) : kBoundaryRatio)) / 4;
    FateCellType type = FateCellTypeDefault;
    switch (dragDropDirection) {
        case HWDragDropDirectionLeft:{
            self.leftButton.transform = CGAffineTransformMakeScale(scale, scale);
//            NSLog(@"<<<<<======滑");
            type = FateCellTypeDislike;
        }break;
        case HWDragDropDirectionRight:{
            self.rightButton.transform = CGAffineTransformMakeScale(scale, scale);
//            NSLog(@"======>>>>滑");
            type = FateCellTypeLike;
        }break;
        default:{
            type = FateCellTypeDefault;
            self.leftButton.transform = CGAffineTransformMakeScale(1, 1);
            self.rightButton.transform = CGAffineTransformMakeScale(1, 1);
        }break;
    }
    cell.type = type;
}
// 拖拽结束
- (void)dragCardView:(HWDragCardView *)dragCardView dragDropDirection:(HWDragDropDirection)dragDropDirection  dragEndWithIndex:(NSInteger)index {
    switch (dragDropDirection) {
        case HWDragDropDirectionLeft:{
            NSLog(@"选择了不喜欢");
        }break;
        case HWDragDropDirectionRight:{
            NSLog(@"选择了喜欢");
        }break;
        default:{
            NSLog(@"啥都没干");
        }break;
    }
}
// 剩余数量提醒
- (void)residualQuantityReminder:(NSInteger)remindNumber {
    if (remindNumber == 1)  {
        NSLog(@"请求数据了");
    } else if (remindNumber == 0) {
        NSLog(@"切换下一组了");
        [self loadData];
    }
}

Dome