问题描述
免责声明：我知道调整这类内容不是最佳做法，因为它可能会因为Apple决定改变其内部行为而破裂。
有一些解决方案，如适用于以前的iOS版本，但不适用于iOS 7.
There are some solutions out there like https://stackoverflow.com/a/12511432/271150 which seem to be working for previous iOS versions, but not for iOS 7.
当查看控件层次结构时，我可以看到UITableViewCellScrollView中有一个UITableViewCellDeleteConfirmationView。但是通过查看layoutSubviews或willTransitionToState中的SubViews集合，只有我自己的视图，UITableViewCellDeleteConfirmationView不会出现。
When looking into the controls hierarchy I can see there is a UITableViewCellDeleteConfirmationView inside the UITableViewCellScrollView. But by looking into the SubViews collection in layoutSubviews or willTransitionToState there are only my own views, UITableViewCellDeleteConfirmationView does not appear.
那么，是否有人想出如何修改默认删除按钮/视图？
So, has anyone figured out how to modify the default delete button/view?
推荐答案
据我所知，您可能不想覆盖Apples整个实现以编辑表格视图单元格但我的应用程序遇到类似问题。在我的情况下，当用户从左向右滑动时，我需要两个按钮（更多和丢失）来显示就像在iOS7的新提醒应用程序中一样。而不是使用：
I understand you may not want to overwrite Apples entire implementation for editing a table view cell BUT I had a similar problem with my app. In my case I needed two buttons (More and Lost) to display just like in the new reminders app for iOS7 when a user swipes left to right. Instead of using:
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
我创建了一个自定义单元格，隐藏顶层下的按钮并使用平移手势识别器移动顶层，显示下面的按钮。因此，我可以完全控制显示的按钮和它们的颜色等（见下文）。
I created a custom cell that hides the buttons under the top layer and uses a pan gesture recogniser to move the top layer, displaying the buttons underneath. I therefore have complete control over what buttons are displayed and what color etc they are (see below).
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
希望这有帮助。
这篇关于iOS 7：UITableViewController：更改/替换删除按钮的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！