DropdownListView下拉列表，选项列表支持自定义 - 代码库

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DropdownListView下拉列表，选项列表支持自定义

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上传者：XiaolongYang 分类：菜单(Menu)

查看次数：11668 下载次数：1562

上传时间：2015-07-27 大小：976 B

DropdownListView创建方式如下：

- (void)setupDropdownList
{
    ddltView = [[XIOptionSelectorView alloc] initWithFrame:CGRectMake(0, 64, self.view.frame.size.width, 40)];
    ddltView.parentView = self.view;
    ddltView.autoresizingMask = UIViewAutoresizingFlexibleWidth;
    [self.view addSubview:ddltView];

    __weak typeof(self) weakSelf = self;
    [ddltView setViewAtIndex:^UIView *(NSInteger index, XIOptionSelectorView*opView) {

        XIOptionSelectorView *strongOpSelectorRef = opView;
        UIView *aView;
        CGFloat py = strongOpSelectorRef.frame.size.height+strongOpSelectorRef.frame.origin.y;
        CGFloat dpW = weakSelf.view.frame.size.width;

        if(index<2){

            aView = [[XIOptionView alloc] initWithFrame:CGRectMake(0, py, dpW, 240)];
            aView.backgroundColor = [UIColor whiteColor];
            aView.delegate = weakSelf;
            aView.viewIndex = index;

            NSArray *tmpArray = (index==0)? @[@"Tracking", @"Processing", @"Processed"]:@[@"Ascending", @"Descending"];
            [aView setFetchDataSource:^NSArray *{
                return tmpArray;
            }];
        }
        else{
            aView = [[XIOtherOptionsView alloc] initWithFrame:CGRectMake(0, py, dpW, 240)];
            aView.backgroundColor = [UIColor whiteColor];
            aView.delegate = weakSelf;
            aView.viewIndex = index;

            [aView setFetchDataSource:^NSArray *{
                return @[@"Choose the specified order", @"Clear all selections"];
            }];
        }
        aView.hidden = YES;
        [weakSelf.view addSubview:aView];
        return aView;
    }];
}

将下拉选项列表放在view controller里初始化的目的是方便自行定制样式，XIOptionView、XIOtherOptionsView只是提供2种自定义的方式，自定义View时请conform protocol XIDropdownlistViewProtocol。

测试环境：Xcode 6.2，iOS 6.0 以上

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效果图