UITableViewCell delete button 上有其它覆盖层

第一种解决办法：

// Fix for iOS7, when backgroundView comes above "delete" button
- (void)willTransitionToState:(UITableViewCellStateMask)state {
    [super willTransitionToState:state];
    [self sendSubviewToBack:self.backgroundView];
    dispatch_async(dispatch_get_main_queue(), ^{
        [self sendSubviewToBack:self.backgroundView];
    });
}

- (void)didTransitionToState:(UITableViewCellStateMask)state {
    [super didTransitionToState:state];
    [self sendSubviewToBack:self.backgroundView];
}

第二种解决办法：

- (void)layoutSubviews
{
    [super layoutSubviews];

    for (UIView *subview in self.subviews) {

        for (UIView *subview2 in subview.subviews) {

            if ([NSStringFromClass([subview2 class]) isEqualToString:@"UITableViewCellDeleteConfirmationView"]) { // move delete confirmation view

            [subview bringSubviewToFront:subview2];

        }
    }
}

第三种解决办法：（最简单，最直接，最有效）

- (void)layoutSubviews
{
    [super layoutSubviews];
    
    if (self.isEditing) {
        [self sendSubviewToBack:self.contentView];
    }
}

第四种解决办法：

- (void) layoutSubviews {
    [super layoutSubviews];

    if ([ [ [UIDevice currentDevice] systemVersion] compare: @"7.0" options: NSNumericSearch] != NSOrderedAscending) {
        if (iOS7 == YES) {
            self.backgroundView.frame = CGRectMake(0, self.backgroundView.frame.origin.y,
                                                   self.backgroundView.frame.size.width, self.backgroundView.frame.size.height);
    }
}

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