我有一个定制的UISegmentedControl.在iOS 6和以下它工作正常.在iOS 7 ..它看起来很好,直到我按下控件,在那个时候,分隔图像看起来很奇怪的一秒钟.
这是我的代码：
UIImage *segmentSelected = [[UIImage imageNamed:@"segcontrol_sel.png"]
resizableImageWithCapInsets:UIEdgeInsetsMake(6,6,6)];
UIImage *segmentUnselected = [[UIImage imageNamed:@"segcontrol_unsel.png"]
resizableImageWithCapInsets:UIEdgeInsetsMake(6,6)];
UIImage *segmentSelectedUnselected =
[UIImage imageNamed:@"segcontrol_sel_uns.png"];
UIImage *segUnselectedSelected =
[UIImage imageNamed:@"segcontrol_uns_sel.png"];
[[UISegmentedControl appearance] setBackgroundImage:segmentUnselected
forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];
[[UISegmentedControl appearance] setBackgroundImage:segmentSelected
forState:UIControlStateSelected barMetrics:UIBarMetricsDefault];
[[UISegmentedControl appearance] setBackgroundImage:segmentUnselected
forState:UIControlStateHighlighted barMetrics:UIBarMetricsDefault];
[[UISegmentedControl appearance] setDividerImage:segUnselectedSelected
forLeftSegmentState:UIControlStateNormal // | UIControlStateHighlighted
rightSegmentState:UIControlStateSelected
barMetrics:UIBarMetricsDefault];
[[UISegmentedControl appearance] setDividerImage:segUnselectedSelected
forLeftSegmentState:UIControlStateHighlighted
rightSegmentState:UIControlStateSelected
barMetrics:UIBarMetricsDefault];
[[UISegmentedControl appearance] setDividerImage:segmentSelectedUnselected
forLeftSegmentState:UIControlStateSelected
rightSegmentState:UIControlStateNormal //| UIControlStateHighlighted)
barMetrics:UIBarMetricsDefault];
[[UISegmentedControl appearance] setDividerImage:segmentSelectedUnselected
forLeftSegmentState:UIControlStateSelected
rightSegmentState:UIControlStateHighlighted
barMetrics:UIBarMetricsDefault];
UIFont *font = [UIFont systemFontOfSize:16.0f];
UIColor *textColor = [UIColor darkGrayColor];
NSDictionary *attributes = [NSDictionary dictionaryWithObjectsAndKeys:
font,@"NSFontAttributeName",textColor,@"NSForegroundColorAttributeName",nil];
[[UISegmentedControl appearance] setTitleTextAttributes:attributes
forState:UIControlStateNormal];
解决方法
我以类似于user2128193描述的方式解决了这个问题,而不是为值更改事件添加一个目标,我将UISegmentedControl子类化并添加了这两个方法：
- (void)sendActionsForControlEvents:(UIControlEvents)controlEvents
{
[super sendActionsForControlEvents:controlEvents];
if (controlEvents & UIControlEventValueChanged) {
[self removeAnimationsRecursivelyForView:self];
}
}
- (void)removeAnimationsRecursivelyForView:(UIView *)view
{
[view.layer removeAllAnimations];
for (UIView *subview in [view subviews]) {
[self removeAnimationsRecursivelyForView:subview];
}
}
显然,这仍然不是一个完美的解决方案,因为它依赖于UISegmentedControl的内部,但至少它会使你的代码变得更加清洁.
