Hide keyboard by touching background of UITableView

问题

I was searching some optimized method to hide keyboard on background tap when UITextFields are in a UITableViewCell. I have made some code Hope this would help you.

回答1:

Doing hittest doest seem to be the right way

You can implement the touch events on the View on which the tableView resides, like below.

Also assign the textField Object to a member variable in textFieldDidBeginEditing, so you will be able to resign the particular text field for which the keyborad is shown.

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    [textFieldObject resignFirstResponder];
}

回答2:

I made a category of tableview for hiding the keyboard on background tap while tableview contains textfield.

My header file:

#import <UIKit/UIKit.h>
#import "Utility.h"

@interface UITableView (HitTest)

@end

My implementation file:

#import "UITableView+HitTest.h"

@implementation UITableView (HitTest)

UITableViewCell *activeCell;

-(UIView*) hitTest:(CGPoint)point withEvent:(UIEvent*)event
{
    NSInteger iterations = 0;
    // check to see if the hit is in this table view
    if ([self pointInside:point withEvent:event])
    {
        UITableViewCell* newCell = nil;

        // hit is in this table view, find out 
        // which cell it is in (if any)
        for (UITableViewCell* aCell in self.visibleCells)
        {
            iterations ++;
            if ([aCell pointInside:[self convertPoint:point toView:aCell] withEvent:event])
            {
                newCell = aCell;
                break;
            }
        }
        if (!newCell)
        { 
            for (UIView *view in activeCell.subviews)
            {
                iterations++;
                if ([view isFirstResponder])
                {
                    [view resignFirstResponder];
                    break;
                }
            }
        }
        else
        {
            activeCell = newCell;
        }
        NSLog(@"total Iterations:%d",iterations);
    }

    // return the super's hitTest result
    return [super hitTest:point withEvent:event];   
}    

@end

This is working fine for me.

来源：https://stackoverflow.com/questions/11260369/hide-keyboard-by-touching-background-of-uitableview

标签

objective-c

ios

uitableview

keyboard

uitextfield