免责声明：我知道调整这种东西不是最佳实践，因为苹果可能会更改其内部行为而导致出错。
有一些解决方案在网上流传，例如https://dev59.com/vnI-5IYBdhLWcg3w6dC2#12511432在先前的iOS版本中似乎可以工作，但对于iOS 7则不行。
当查看控件层次结构时，我可以看到UITableViewCellScrollView中有一个UITableViewCellDeleteConfirmationView。但是，在layoutSubviews或willTransitionToState中查看子视图集合时，只有我的视图，UITableViewCellDeleteConfirmationView不会出现。
所以，有人找到了如何修改默认的删除按钮/视图吗？
我知道你可能不想覆盖苹果为编辑表视图单元格而实现的整个方案，但我有一个类似的问题。在我的应用中，当用户向左滑动时，我需要两个按钮（More和Lost）像iOS7新提醒应用程序中一样显示。与其使用：
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
static CGFloat const kEditButtonWidth = 82.0;
@interface MyCustomCell ()
@property (nonatomic, assign) CGFloat firstX;
@property (nonatomic, assign) CGFloat firstY;
@property (nonatomic, strong) UIView *topLayer;
@property (nonatomic, strong) UIButton *moreButton;
@property (nonatomic, strong) UIButton *lostButton;
@property (nonatomic, strong) UILabel *titleLabel;
@end
@implementation MyCustomCell
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
self = [super initWithStyle:UITableViewCellStyleDefault reuseIdentifier:reuseIdentifier];
if (self) {
// BOTTOM LAYER (MORE AND LOST BUTTONS)
UIButton *aButton = [UIButton buttonWithType:UIButtonTypeCustom];
[aButton setFrame:CGRectZero];
[aButton setTitle:@"More" forState:UIControlStateNormal];
[aButton setTitleShadowColor:[UIColor clearColor] forState:UIControlStateNormal];
[aButton setBackgroundColor:[UIColor colorWithRed:0.78 green:0.78 blue:0.78 alpha:1.0]];
[[self contentView] addSubview:aButton];
[self setMoreButton:aButton];
aButton = [UIButton buttonWithType:UIButtonTypeCustom];
[aButton setFrame:CGRectZero];
[aButton setTitle:@"Lost" forState:UIControlStateNormal];
[aButton setTitleShadowColor:[UIColor clearColor] forState:UIControlStateNormal];
[aButton setBackgroundColor:[UIColor colorWithRed:1.00f green:0.23f blue:0.19f alpha:1.00f]];
[[self contentView] addSubview:aButton];
[self setLostButton:aButton];
// TOP LAYER
UIView *aView = [[UIView alloc] initWithFrame:CGRectZero];
[aView setBackgroundColor:[UIColor whiteColor]];
[[self contentView] addSubview:aView];
[self setTopLayer:aView];
UIPanGestureRecognizer *aPanRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panGestureAction:)];
[aPanRecognizer setMinimumNumberOfTouches:1];
[aPanRecognizer setMaximumNumberOfTouches:1];
[aView addGestureRecognizer:aPanRecognizer];
// title label
UILabel *aLabel = [[UILabel alloc] initWithFrame:CGRectZero];
[aView addSubview:aLabel];
[self setTitleLabel:aLabel];
}
return self;
}
- (void)layoutSubviews {
[super layoutSubviews];
CGRect bounds = [[self contentView] bounds];
CGRect frame = CGRectZero;
// BOTTOM LAYER (MORE AND LOST BUTTONS)
frame.origin.x = bounds.size.width-(kEditButtonWidth+kEditButtonWidth); // two buttons wide
frame.size.width = kEditButtonWidth;
frame.size.height = bounds.size.height;
[[self moreButton] setFrame:frame];
frame.origin.x += kEditButtonWidth;
[[self lostButton] setFrame:frame];
// TOP LAYER
frame = bounds;
CGPoint anchorPoint = CGPointMake(0.0f, [[[self topLayer] layer] anchorPoint].y);
[[[self topLayer] layer] setAnchorPoint:anchorPoint];
[[self topLayer] setFrame:frame];
// title label
frame.origin.x = 20.0;
frame.origin.y = 4.0;
frame.size.width = bounds.size.width-40.0;
frame.size.height = 21.0;
[[self titleLabel] setFrame:frame];
}
- (void)panGestureAction:(id)sender {
// on the first touch, get the center coordinates (x and y) of the view
CGPoint translatedPoint = [(UIPanGestureRecognizer*)sender translationInView:self];
if([(UIPanGestureRecognizer*)sender state] == UIGestureRecognizerStateBegan) {
[self setFirstX:[[sender view] center].x];
[self setFirstY:[[sender view] center].y];
}
// add translated point to reference points
translatedPoint = CGPointMake([self firstX]+translatedPoint.x, [self firstY]);
[[sender view] setCenter:translatedPoint];
// when pan ends (set final x to be either back to zero or showing buttons)
if ([(UIPanGestureRecognizer*)sender state] == UIGestureRecognizerStateEnded) {
CGFloat finalX = translatedPoint.x+(0.30*[(UIPanGestureRecognizer*)sender velocityInView:self].x);
if (finalX < -1.0f*FMEditButtonWidth) {
finalX = -2.0f*FMEditButtonWidth;
[self setEditMode:YES];
} else {
finalX = 0.0f;
[self setEditMode:NO];
}
// animate view
[UIView animateWithDuration:1.0 delay:0.0 usingSpringWithDamping:1.0f initialSpringVelocity:1.0f options:UIViewAnimationOptionCurveEaseOut | UIViewAnimationOptionAllowUserInteraction | UIViewAnimationOptionBeginFromCurrentState animations:^{
[[sender view] setCenter:CGPointMake(finalX, [self firstY])];
} completion:NULL];
}
}
@end
layoutSubviews 或者 willTransitionToState: 中的视图，是因为删除按钮视图还不存在，或者它还没有成为视图层次结构的一部分。
为了“看到”它，需要稍微延迟浏览视图层次结构的代码，这样允许操作系统在此期间创建/添加视图：
- (void)willTransitionToState:(UITableViewCellStateMask)state
{
[super willTransitionToState:state];
if (state & UITableViewCellStateShowingDeleteConfirmationMask)
{
[self performSelector:@selector(findDeleteButtonViewThroughViewHierarchy:) withObject:self.subviews afterDelay:0];
}
}
不确定这是否适用于iOS 7，但看一下：
(void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
if (editingStyle == UITableViewCellEditingStyleDelete)
{
// Your Code
}
}