如何向 UITableView 添加页脚?

发布于 2024-10-19 20:52:37 字数 569 浏览 7 评论 0原文

我使用此代码向 TableView 添加页脚。它有 20 个部分,每个部分有几行。有 titleForHeaderInSection 和sectionForSectionIndexTitle 方法。

CGRect footerRect = CGRectMake(0, 0, 320, 40);
UILabel *tableFooter = [[UILabel alloc] initWithFrame:footerRect];
tableFooter.textColor = [UIColor blueColor];
tableFooter.backgroundColor = [self.theTable backgroundColor];
tableFooter.opaque = YES;
tableFooter.font = [UIFont boldSystemFontOfSize:15];
tableFooter.text = @"test";
self.theTable.tableFooterView = tableFooter;
[tableFooter release];

我做错了什么?

谢谢,

RL

I'me using this code to add a footer to the TableView. It has 20 sections, and each section a few rows. There's a titleForHeaderInSection, and sectionForSectionIndexTitle methods.

CGRect footerRect = CGRectMake(0, 0, 320, 40);
UILabel *tableFooter = [[UILabel alloc] initWithFrame:footerRect];
tableFooter.textColor = [UIColor blueColor];
tableFooter.backgroundColor = [self.theTable backgroundColor];
tableFooter.opaque = YES;
tableFooter.font = [UIFont boldSystemFontOfSize:15];
tableFooter.text = @"test";
self.theTable.tableFooterView = tableFooter;
[tableFooter release];

What am I doing wrong?

thanks,

RL

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评论(11

只是我以为 2024-10-26 20:52:37

我特别在我的代码中看到了

self.theTable.tableFooterView = tableFooter;

有效和

[self.theTable.tableFooterView addSubview:tableFooter];

无效的情况。因此,坚持前者并在其他地方寻找可能的错误。
华泰

I'm specifically seeing in my code that

self.theTable.tableFooterView = tableFooter;

works and

[self.theTable.tableFooterView addSubview:tableFooter];

does not work. So stick to the former and look elsewhere for the possible bug.
HTH

时光清浅 2024-10-26 20:52:37

您需要实现 UITableViewDelegate 方法

- (UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section

并返回表格相应部分所需的视图(例如,在页脚中包含您想要的文本的 UILabel)。

You need to implement the UITableViewDelegate method

- (UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section

and return the desired view (e.g. a UILabel with the text you'd like in the footer) for the appropriate section of the table.

寒江雪… 2024-10-26 20:52:37

我用过它,效果非常好:)

    UIView* footerView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)];
    [footerView setBackgroundColor:[UIColor colorWithPatternImage:[UIImage imageNamed:@"ProductCellBackground.png"]]];
    self.tableView.tableFooterView = footerView;
    [self.tableView setSeparatorStyle:(UITableViewCellSeparatorStyleNone)];
    [self.tableView setContentInset:(UIEdgeInsetsMake(0, 0, -500, 0))];

I used that and it worked Perfectly :)

    UIView* footerView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 500)];
    [footerView setBackgroundColor:[UIColor colorWithPatternImage:[UIImage imageNamed:@"ProductCellBackground.png"]]];
    self.tableView.tableFooterView = footerView;
    [self.tableView setSeparatorStyle:(UITableViewCellSeparatorStyleNone)];
    [self.tableView setContentInset:(UIEdgeInsetsMake(0, 0, -500, 0))];
沦落红尘 2024-10-26 20:52:37

我知道这是一个很老的问题,但我刚刚遇到了同样的问题。我不知道确切的原因,但似乎 tableFooterView 只能是 UIView 的一个实例(不是“某种”,而是“是成员”)...所以在我的例子中,我创建了新的 UIView 对象(例如wrapperView)并向其中添加我的自定义子视图...在您的情况下,将您的代码从:

CGRect footerRect = CGRectMake(0, 0, 320, 40);
UILabel *tableFooter = [[UILabel alloc] initWithFrame:footerRect];
tableFooter.textColor = [UIColor blueColor];
tableFooter.backgroundColor = [self.theTable backgroundColor];
tableFooter.opaque = YES;
tableFooter.font = [UIFont boldSystemFontOfSize:15];
tableFooter.text = @"test";
self.theTable.tableFooterView = tableFooter;
[tableFooter release];

更改为:

CGRect footerRect = CGRectMake(0, 0, 320, 40);
UIView *wrapperView = [[UIView alloc] initWithFrame:footerRect];

UILabel *tableFooter = [[UILabel alloc] initWithFrame:footerRect];
tableFooter.textColor = [UIColor blueColor];
tableFooter.backgroundColor = [self.theTable backgroundColor];
tableFooter.opaque = YES;
tableFooter.font = [UIFont boldSystemFontOfSize:15];
tableFooter.text = @"test";

[wrapperView addSubview:tableFooter];

self.theTable.tableFooterView = wrapperView;
[wrapperView release];
[tableFooter release];

希望它有帮助。这对我有用。

I know that this is a pretty old question but I've just met same issue. I don't know exactly why but it seems that tableFooterView can be only an instance of UIView (not "kind of" but "is member")... So in my case I've created new UIView object (for example wrapperView) and add my custom subview to it... In your case, chamge your code from:

CGRect footerRect = CGRectMake(0, 0, 320, 40);
UILabel *tableFooter = [[UILabel alloc] initWithFrame:footerRect];
tableFooter.textColor = [UIColor blueColor];
tableFooter.backgroundColor = [self.theTable backgroundColor];
tableFooter.opaque = YES;
tableFooter.font = [UIFont boldSystemFontOfSize:15];
tableFooter.text = @"test";
self.theTable.tableFooterView = tableFooter;
[tableFooter release];

to:

CGRect footerRect = CGRectMake(0, 0, 320, 40);
UIView *wrapperView = [[UIView alloc] initWithFrame:footerRect];

UILabel *tableFooter = [[UILabel alloc] initWithFrame:footerRect];
tableFooter.textColor = [UIColor blueColor];
tableFooter.backgroundColor = [self.theTable backgroundColor];
tableFooter.opaque = YES;
tableFooter.font = [UIFont boldSystemFontOfSize:15];
tableFooter.text = @"test";

[wrapperView addSubview:tableFooter];

self.theTable.tableFooterView = wrapperView;
[wrapperView release];
[tableFooter release];

Hope it helps. It works for me.

痴者 2024-10-26 20:52:37

最初我只是尝试该方法:

- (UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section

但在使用此方法后:

- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section

问题得到解决。示例程序 -

- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section
{
    return 30.0f;
}

- (UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section
{
    UIView *sampleView = [[UIView alloc] init];
    sampleView.frame = CGRectMake(SCREEN_WIDTH/2, 5, 60, 4);
    sampleView.backgroundColor = [UIColor blackColor];
    return sampleView;
}

并包含 UITableViewDelegate 协议。

@interface TestViewController : UIViewController <UITableViewDelegate>

Initially I was just trying the method:

- (UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section

but after using this along with:

- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section

problem was solved. Sample Program-

- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section
{
    return 30.0f;
}

- (UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section
{
    UIView *sampleView = [[UIView alloc] init];
    sampleView.frame = CGRectMake(SCREEN_WIDTH/2, 5, 60, 4);
    sampleView.backgroundColor = [UIColor blackColor];
    return sampleView;
}

and include UITableViewDelegate protocol.

@interface TestViewController : UIViewController <UITableViewDelegate>
郁金香雨 2024-10-26 20:52:37

这些样本效果很好。您可以检查部分,然后返回高度以显示或隐藏部分。不要忘记从 UITableViewDelegate 扩展您的视图控制器。

Objective-C

- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section
{
    if (section == 0)
    {
        // to hide footer for section 0 
        return 0.0;
    }
    else
    {
        // show footer for every section except section 0 
        return HEIGHT_YOU_WANT;
    }
}

- (UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section
{
    UIView *footerView = [[UIView alloc] init];
    footerView.backgroundColor = [UIColor blackColor];
    return footerView;
}

Swift

func tableView(_ tableView: UITableView, viewForFooterInSection section: Int) -> UIView? {
    let footerView = UIView()
    footerView.backgroundColor = UIColor.black
    return footerView
}

func tableView(_ tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
    if section == 0 {
        // to hide footer for section 0
        return 0.0
    } else {
        // show footer for every section except section 0
        return HEIGHT_YOU_WANT
    }
}

These samples work well. You can check section and then return a height to show or hide section. Don't forget to extend your viewcontroller from UITableViewDelegate.

Objective-C

- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section
{
    if (section == 0)
    {
        // to hide footer for section 0 
        return 0.0;
    }
    else
    {
        // show footer for every section except section 0 
        return HEIGHT_YOU_WANT;
    }
}

- (UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section
{
    UIView *footerView = [[UIView alloc] init];
    footerView.backgroundColor = [UIColor blackColor];
    return footerView;
}

Swift

func tableView(_ tableView: UITableView, viewForFooterInSection section: Int) -> UIView? {
    let footerView = UIView()
    footerView.backgroundColor = UIColor.black
    return footerView
}

func tableView(_ tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
    if section == 0 {
        // to hide footer for section 0
        return 0.0
    } else {
        // show footer for every section except section 0
        return HEIGHT_YOU_WANT
    }
}
别忘他 2024-10-26 20:52:37

下面的 Swift 2.1.1 有效:

func tableView(tableView: UITableView, viewForFooterInSection section: Int) -> UIView? {
        let v = UIView()
        v.backgroundColor = UIColor.RGB(53, 60, 62)
        return v
    }

    func tableView(tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
        return 80
    }

如果使用 self.theTable.tableFooterView = tableFooter,最后一行和 tableFooterView 之间有一个空格。

Swift 2.1.1 below works:

func tableView(tableView: UITableView, viewForFooterInSection section: Int) -> UIView? {
        let v = UIView()
        v.backgroundColor = UIColor.RGB(53, 60, 62)
        return v
    }

    func tableView(tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
        return 80
    }

If use self.theTable.tableFooterView = tableFooter there is a space between last row and tableFooterView.

删除会话 2024-10-26 20:52:37
[self.tableView setTableFooterView:footerView];
[self.tableView setTableFooterView:footerView];
你怎么这么可爱啊 2024-10-26 20:52:37

而不是

self.theTable.tableFooterView = tableFooter;

尝试

[self.theTable.tableFooterView addSubview:tableFooter];

instead of

self.theTable.tableFooterView = tableFooter;

try

[self.theTable.tableFooterView addSubview:tableFooter];
凯凯我们等你回来 2024-10-26 20:52:37

我遇到了同样的问题,但我用此行替换了标题中的以下行:

@interface MyController : UIViewTableViewController <UITableViewDelegate, UITableViewDataSource>

它按预期工作:

@interface RequestViewController : UIViewController <UITableViewDelegate, UITableViewDataSource>

注意 UIViewController。
祝你好运 :)

I had the same problem but I replaced the following line in my header:

@interface MyController : UIViewTableViewController <UITableViewDelegate, UITableViewDataSource>

with this line and it works as expected:

@interface RequestViewController : UIViewController <UITableViewDelegate, UITableViewDataSource>

Notice the UIViewController.
Good luck :)

纸短情长 2024-10-26 20:52:37

如果您不喜欢粘性底部效果,我会将其放入 viewDidLoad()
https://stackoverflow.com/a/38176479/4127670

If you don't prefer the sticky bottom effect i would put it in viewDidLoad()
https://stackoverflow.com/a/38176479/4127670

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