can't click UIButton inside a cell in UITableview

对着背影说爱祢 提交于 2019-12-20 19:36:24

问题


searched already some possible fixes but all did not solve mine.

i keep clicking the cell in the uitableview rather than the buttons inside it.

here is my code:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:  (NSIndexPath *)indexPath{

    static NSString *CellIdentifier = @"Cell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
    }

    cell.backgroundColor = [UIColor blackColor];

    UIView *v  = nil;
    NSArray *array = [cell subviews];

    for (v in array) {
        NSLog(@"%@",[v class]);
        if( [v isKindOfClass:[UIView class]] ){
           [v removeFromSuperview];
        }
    }

    //tb
    if (tableView == self.tb) {

        v = [[UIView alloc] initWithFrame: CGRectMake(0, 0, self.tb.bounds.size.width, 120.0)];

        if([feeds count]>0){
            UIImageView *box=[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"statusBox.png"]];

            box.userInteractionEnabled = YES;
            [v addSubview:box];

            AsyncImageView *imageView1 = [[AsyncImageView alloc] initWithFrame:CGRectMake(10, 20.0f, 34.0f, 34.0f)];
            imageView1.contentMode = UIViewContentModeScaleAspectFill;
            imageView1.clipsToBounds = YES;

            //cancel loading previous image for cell
            [[AsyncImageLoader sharedLoader] cancelLoadingImagesForTarget:imageView1];
            if (users1 != nil && users1.imagelink != nil && (id) users1.imagelink !=   [NSNull null]){
               imageView1.imageURL = [NSURL URLWithString:users1.imagelink];
            }
            else{
                imageView1.image=[UIImage imageNamed:@"default_ProfilePic.png"];
            }

            UITapGestureRecognizer *tapped = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(myFunction:)];
            tapped.numberOfTapsRequired = 1;
            [imageView1 addGestureRecognizer:tapped];
            [tapped release];

            imageView1.userInteractionEnabled = NO;
            [v addSubview:imageView1];


            UIFont *font     = [UIFont fontWithName:@"TrebuchetMS-Bold" size:11];
            UILabel *descLabel1 = [[UILabel alloc] initWithFrame: CGRectMake(52, 23, 160, 48)];
            descLabel1.text                 = [NSString stringWithFormat:@"%@ %@",users1.userfirstn,users1.userlastn];
            descLabel1.textColor            = [UIColor blackColor];
            descLabel1.font                 = font;
            descLabel1.adjustsFontSizeToFitWidth=YES;
            descLabel1.numberOfLines = 0;
            CGSize expectedLabelSize = [descLabel1.text sizeWithFont:descLabel1.font
                                               constrainedToSize:descLabel1.frame.size
                                                   lineBreakMode:UILineBreakModeWordWrap];

            CGRect newFrame = descLabel1.frame;
            newFrame.size.height = expectedLabelSize.height;
            descLabel1.frame = newFrame;
            descLabel1.numberOfLines = 0;

            descLabel1.userInteractionEnabled = NO;
            [v addSubview:descLabel1];


            UILabel *descLabel2= [[UILabel alloc] initWithFrame: CGRectMake(52, 43, 200, 48)];
            StatusClass *stat1=[feeds objectAtIndex:indexPath.row];
            descLabel2.text                 = [stat1 statcreate];
            descLabel2.textColor            = [UIColor blackColor];
            descLabel2.font                 = font;
            descLabel2.adjustsFontSizeToFitWidth=YES;
            descLabel2.numberOfLines = 0;
            CGSize expectedLabelSize2 = [descLabel2.text sizeWithFont:descLabel2.font
                                                constrainedToSize:descLabel2.frame.size
                                                    lineBreakMode:UILineBreakModeWordWrap];

            CGRect newFrame2 = descLabel2.frame;
            newFrame2.size.height = expectedLabelSize2.height;
            descLabel2.frame = newFrame2;
            descLabel2.numberOfLines = 0;

            descLabel2.userInteractionEnabled = NO;
            [v addSubview:descLabel2];

            UILabel *descLabel3= [[UILabel alloc] initWithFrame: CGRectMake(10, 63, 280, 80)];
            StatusClass *stat=[feeds objectAtIndex:indexPath.row];
            descLabel3.text                 = [stat stattext];
            descLabel3.textColor            = [UIColor blackColor];
            descLabel3.font                 = font;
            descLabel3.adjustsFontSizeToFitWidth=YES;
            descLabel3.numberOfLines = 0;

            descLabel3.userInteractionEnabled = NO;
            [v addSubview:descLabel3];

            //comment button
            UIButton *buttonC = [UIButton buttonWithType:UIButtonTypeRoundedRect];
            [buttonC addTarget:self action:@selector(sendComment:) forControlEvents:UIControlEventTouchUpInside];
            [buttonC setImage:[UIImage imageNamed:@"comment.png"] forState:UIControlStateNormal];
            buttonC.frame = CGRectMake(2, 160, 145, 35);

            buttonC.userInteractionEnabled = YES;
            [v addSubview:buttonC];

            //share button
            UIButton *buttonS = [UIButton buttonWithType:UIButtonTypeRoundedRect];
            buttonS.tag = indexPath.row;
            [buttonS addTarget:self action:@selector(sendShare:) forControlEvents:UIControlEventTouchUpInside];
            [buttonS setImage:[UIImage imageNamed:@"share.png"] forState:UIControlStateNormal];
            buttonS.frame = CGRectMake(150, 160, 140, 35);

            buttonS.userInteractionEnabled = YES;
            [v addSubview:buttonS];

        }
        v.userInteractionEnabled = YES;
        [cell addSubview:v];
    }
    return cell; 
}

I also tried the UITapGestureRecognizer for the buttons and still not working.

Thanks.


回答1:


I'm just baffled by this issue....

I managed to fix this problem by doing this on one project:

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("RegCell", forIndexPath: indexPath) as! CustomCell

    cell.contentView.userInteractionEnabled = false // <<-- the solution

    return cell
}

but the same did not work for a different project. I have no idea why...




回答2:


There is another potential cause of problems like this one, and that is UITableViewCells now have a contentView. This can and will be placed in front of other views in your custom table view cells in order to pick up touches and detect cell selection. In doing so, it may block touches to any views behind it. I've especially noticed this annoyance when creating cells using nibs.

The accepted means for dealing with this is to ensure that all subviews are added not to the tableview cell itself, but to its contentView. This is a read-only property that adjusts its own frame under certain circumstances, for example when slid sideways to reveal the delete button, or during editing mode. You should therefore ensure that any items you do add to the contentVieware intelligently sized and have the correct resizing behaviour.

Also be aware that by adding cells to the contentView, you may yourself block touches to it and thus prevent the cell from being selected. I personally try not to allow cell selection in tableviews containing cells with custom user-enabled controls. It only leads to confusion and awkward interfaces. In fact, I'm seriously considering replacing all UITableViews in my future projects with UICollectionViews, which are far more adaptable.

-Ash




回答3:


Your UIButton='s y offset is given as 160 and UIView's height is just given as 120. Please change the UIButton's y offset and try.




回答4:


For Swift 3 and Storyboard

For me, I had to enable multiple touch inside the content view, and enable user interaction on everything - the table view, table view cell, content view, and UIButton. I was using storyboard.

I also set up my tableview cell as a subclass.

Since I couldn't find an answer here when I was exploring the problem, I posted another question on stack overflow about this. You can see my code and download a project with this working here: Can't click button inside UITableViewCell?




回答5:


The UITableViewCell is handling all the gestures by default. Set cell.selectionStyle = UITableViewCellSelectionStyleNone; to make it disable the default behaviour.




回答6:


I ran into this problem, but in my case it was not related to the table view, instead it was because I was using subviews in my button for which userInteractionEnabled was true, setting that value for false (NO) for all the button's subviews fixed the issue for me.




回答7:


I was doing this:

let plusButton: UIButton = {
        let v = UIButton()
        v.setImage(plusImg, for: .normal)
        v.tintColor = .dark
        v.translatesAutoresizingMaskIntoConstraints = false
        v.addTarget(self, action: #selector(plusButtonHandler), for: .touchUpInside)
        // adding targets here did not work
        return v
    }()

And it appears invoking the addTarget method inside of the closure did not work. When I factored the addTarget method out and instead put it in the initializer, everything worked!




回答8:


Create a custom UITableViewCell. Refer this link.

Say you have a UIButton by the name of displayButton, you can do something like this:

Inside your - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath, after you create your cell,

[cell.dislayButton addTarget: self
                             action: @selector(replyButtonPressed:withEvent:)
                   forControlEvents: UIControlEventTouchUpInside];

And the create the method like so in your ViewController:

- (void) replyButtonPressed: (id) sender withEvent: (UIEvent *) event
{
    UITouch * touch = [[event allTouches] anyObject];
    CGPoint location = [touch locationInView: self.tableView];
    NSIndexPath * indexPath = [self.tableView indexPathForRowAtPoint: location];
}



回答9:


I have the same issue, and somehow I figured out my mistake.
After I changed the constraints with self(UITableViewCell) to constraints with contentView of self(UITableViewCell),my cell's button is clickable again.




回答10:


If you have no alternative selector for the UIButton pressed inside some UITableViewCell you need turn off userInteractionEnabled for the button

cellButton.userInteractionEnabled = false

In this case any button touch will propagate to the cell touch.




回答11:


try this

public override void SetSelected(bool selected, bool animated)
    {
       // this.interestsButton.Selected = true;
        if (selected)
        {
            //  this.TextLabel.TextColor = UIColor.Red;

            //this.interestsButton.ShowsTouchWhenHighlighted = true;
            this.interestsButton.BackgroundColor = UIColor.Purple;
            //this.interestsButton.SetTitleColor(UIColor.Red, UIControlState.Highlighted);
        }
        else
        {

        }


       // cell.ContentView.UserInteractionEnabled = false;
        base.SetSelected(selected, animated);


    }

Tested on "Mvvmcross.iOS" only



来源:https://stackoverflow.com/questions/18866420/cant-click-uibutton-inside-a-cell-in-uitableview

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