CODEWITHSUNDEEP
iosuitableviewreloaddata
vnaren001
vnaren001

Reputation: 254

IOS App Crashes with [UITableView reloadData]

My application crashes and showing the error below.

Thread 0 Crashed:

0   libobjc.A.dylib                 0x3b5d7b26 objc_msgSend + 6

1   UIKit                           0x339c74f4 -[UIResponder(Static) _setFirstResponder:] + 40

2   UIKit                           0x339c74f4 -[UIResponder(Static) _setFirstResponder:] + 40

3   UIKit                           0x339b3000 -[UIResponder resignFirstResponder] + 248

4   UIKit                           0x339e4e9c -[UITableView reloadData] + 224

5   CSModule                        0x001588e2 -[UIBubbleTableView reloadData]

I try to fix issue but did not get solution. Please help me to fix the issue.

I am have created a custom view with a label to on table cellview, when we tap on that custom view , it show a UIMenuController with copy option. My custom view handle tap gesture as below

-(void) handleTapGesture:(UIGestureRecognizer*) recognizer{

    if (self.window == nil) {
        NSLog(@" \n\n\n\n Window is null \n\n\n\n\n\n");
        return;
    }

    [self becomeFirstResponder];

    CGRect targetRectangle = CGRectMake(self.bounds.size.width/2, 2, 2, 2);

    UIMenuController *menuController = [UIMenuController sharedMenuController];
    [menuController setTargetRect:targetRectangle inView:self];
    [menuController setMenuVisible:YES animated:YES];
}

If I did not handle tap gesture and do not show this UIMenuController , then it does not produce any crashes.

Crashes occurs randomly , I have implement Pull to refresh in UITableView, on pull I download previous data from server and reload tableview, at the same time I tap on the custom view in cell, some time crashes occurs.

One more thing some time crashes occurs at handleTapGesture function as bellow.

Thread 0 Crashed:

0 libobjc.A.dylib 0x3b5d7b26 objc_msgSend + 6

1 UIKit 0x339c74f4 -[UIResponder(Static) _setFirstResponder:] + 40

2 UIKit 0x339c74f4 -[UIResponder(Static) _setFirstResponder:] + 40

3 UIKit 0x339c74f4 -[UIResponder(Static) _setFirstResponder:] + 40

4 UIKit 0x339b2f92 -[UIResponder resignFirstResponder] + 138

5 UIKit 0x3398d958 -[UIResponder becomeFirstResponder] + 308

6 UIKit 0x3398dc46 -[UIView(Hierarchy) becomeFirstResponder] + 102

7 CSModule 0x0006ceb2 -[UIChatFootageTextView handleTapGesture:]

Please If you have any idea to fix the issue , then please help me to fix it.

Upvotes: 0

Views: 1370

Answers (3)

vnaren001
vnaren001

Reputation: 254

Previously, I was getting the crash issue. As per my idea, since I was setting my custom view as first responder to show UIMenuController, that was required to visible UIMenuController. So I can't remove that statement.

To fix this, I resign to it as first responder just after the UIMenuController set as visible. Now my application does not get that random crashes.

-(void) handleTapGesture:(UIGestureRecognizer*) recognizer{

    if (self.window == nil) {
        NSLog(@" \n\n\n\n Window is null \n\n\n\n\n\n");
        return;
    }

    [self becomeFirstResponder];

    CGRect targetRectangle = CGRectMake(self.bounds.size.width/2, 2, 2, 2);

    UIMenuController *menuController = [UIMenuController sharedMenuController];
    [menuController setTargetRect:targetRectangle inView:self];
    [menuController setMenuVisible:YES animated:YES];

    [self resignFirstResponder];
}

Upvotes: 1

J3RM
J3RM

Reputation: 1722

FWIW, I noticed this same issue with my apps on ios8 GM. The problem seems to be that if you call reloadData on a UITableView that has no records to display (I.E newly installed app) it crashes.

I had to start checking to make sure that the number of records I was trying to display was >0 before calling the method... Personally I think this is a bug in ios8. If I ask a view to reloaddata, and there is no data, it should handle it. I should not have to evaluate the data existence before asking a view to reload.. kind of breaks the whole MVC design patterns IMO.

good luck to you all.

Upvotes: 2

Ramaraj T
Ramaraj T

Reputation: 5230

The UILabel does not allow becomeFirstResponder. You have to subclass the UILabel to achieve this.

@interface CustomLabel : UILabel
@end

@implementation CustomLabel

- (BOOL)canBecomeFirstResponder {
    return YES;
}

- (BOOL)canPerformAction:(SEL)action withSender:(id)sender
{
    return (action == @selector(copy:));
}

- (void)copy:(id)sender {
    [[UIPasteboard generalPasteboard] setString:self.text];
}

@end

Use this custom label and add your gesture to this.

Upvotes: 0

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