隐藏UITableView页脚

Question

I am unable to hide my UITableView footer (ie setting it's height to 0 and animating the transition).

I tried to wrap tableView.tableViewFooter.height = 0 (and tableView.tableViewFooter = nil ) between [tableView beginUpdates] and [tableView endUpdates] but it doesn't work.

Implementing the method below creates another footer.

- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section
{
    return 50;
}

Is there a difference between a tableview footer and a section footer? I created mine by dropping a button under my tableview in my storyboard.

Any ideas to do this simply?

Answer 1

Ok here's how I solved this problem.

- (void)refreshTableFooterButton
{
    if (should be visible) {
        self.tableView.tableFooterView = self.tableFooterButton;
    } else {
        self.tableView.tableFooterView = [[UIView alloc] initWithFrame:CGRectZero];
    }
}

I used [[UIView alloc] initWithFrame:CGRectZero instead of nil to prevent unwanted empty cells to appear in the tableview.

I didn't need an animation block, but other people might.

[UIView animateWithDuration:0.5 animations:^{

}];

Also, i had to keep a strong reference to my tableFooterButton IBOutlet. That was part of why my initial attempt at solving the problem failed. I'm not sure if having a strong reference to an IBOutlet is good practice though. Feel free to leave a comment about that.

Answer 2

使用以下代码：

self.tableView.tableFooterView?.hidden = false

Answer 3

This should do the trick. There are other alternatives such as this answer here .

tableView.sectionHeaderHeight = 0.0;
tableView.sectionFooterHeight = 0.0;

-(CGFloat)tableView:(UITableView*)tableView heightForHeaderInSection:(NSInteger)section
{
    return 1.0;


-(CGFloat)tableView:(UITableView*)tableView heightForFooterInSection:(NSInteger)section
{
    return 1.0;
}

-(UIView*)tableView:(UITableView*)tableView viewForHeaderInSection:(NSInteger)section
{
    return [[[UIView alloc] initWithFrame:CGRectZero] autorelease];
}

-(UIView*)tableView:(UITableView*)tableView viewForFooterInSection:(NSInteger)section
{
    return [[[UIView alloc] initWithFrame:CGRectZero] autorelease];
}`

Answer 4

use following methods :

- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
    return 0.0f;
}

-(UIView*)tableView:(UITableView*)tableView viewForFooterInSection:(NSInteger)section
{
    return [[[UIView alloc] initWithFrame:CGRectZero] autorelease];
}`

Answer 5

So in the end here's the simplest solution I can give you. So as you can see I just put the .m (for simplicity).

There is a difference between table footer and section footer. What you're looking for is the section footer.

I also added an animation block for adding and removing it.

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

UIButton *_footerButton;


- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    [self createAndAddFooterButton];
}

-(void) buttonPressed:(id)button
{
    [UIView animateWithDuration:2 animations:^{
        self.tableView.tableFooterView = nil;
    }];
}

- (void)createAndAddFooterButton
{
    // here you create the button
    _footerButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    [_footerButton setTitle:@"Button Title" forState:UIControlStateNormal];
    [_footerButton sizeToFit];
    [_footerButton addTarget:self action:@selector(buttonPressed:) forControlEvents:UIControlEventTouchUpInside];
    [UIView animateWithDuration:2 animations:^{
        self.tableView.tableFooterView = _footerButton;
    }];
}

@end

Answer 6

My problem was that the clear line was the footer which I could only define as 1 pixel high and not 0 (as I do not want to have a footer). The only way I could fix it was to provide a view in viewForFooterInSection and set the background colour to the same as the header, so that visually you don't notice, and when I animate-in new rows they do not show through the top of the header where the clear line (footer) was.

    override func tableView(tableView: UITableView, viewForFooterInSection section: Int) -> UIView? {
    let blankView = UIView(frame: CGRect(x: 0, y: 0, width: 300, height: 1))
    blankView.backgroundColor = {Same colour as Header}
    return blankView