所以我的照片应用程序中的滤镜按钮出现问题。我不确定为什么,但他们突然停止工作了。点击选择器时不会调用选择器,但我不知道为什么。几天前他们工作得很好,但出于某种原因现在不行了。我已经检查了 UIView subview 数组,确认它位于顶部。我需要一种方法来查看是否由于某种原因触摸没有到达按钮。我不确定该怎么做。
我希望我能提供更多信息,但这就是我所能提供的。我希望有人能提出一些建议,因为我对此束手无策。
提前致谢!
按钮创建方法:
-(void)createFilterButtonsForThumbnail:(UIImage *)thumbnail
{
UIView *filtersContainer = self.filterContainer;
CGRect buttonFrame = CGRectMake(kFilterFrameThickness, kFilterFrameThickness,
thumbnail.size.width, thumbnail.size.height);
CGFloat frameWidth = thumbnail.size.width+(2*kFilterFrameThickness);
CGFloat frameHeight = kFilterPickerHeight;
UIEdgeInsets backgroundInsets = UIEdgeInsetsMake(0, kFilterFrameThickness, 0, kFilterFrameThickness);
UIImage *buttonBackgroundImage = [[UIImage imageNamed:@"FilmReel"] resizableImageWithCapInsets:backgroundInsets];
for (int i = 0;i<(self.filterPaths.count+kFilterNonLookups+1);i++){
UIImageView *buttonBackground = [[UIImageView alloc] initWithFrame:CGRectMake(kFilterSidePadding+(i*(frameWidth+kFilterSidePadding)),
0,
frameWidth,
frameHeight)];
[buttonBackground setImage:buttonBackgroundImage];
UIButton *thumbnailButton = [[UIButton alloc] initWithFrame:buttonFrame];
UIImage *filteredThumbnail = [self applyFilterAtIndex:i ToImage:thumbnail];
[thumbnailButton setImage:filteredThumbnail forState:UIControlStateNormal];
[thumbnailButton addTarget:self action:@selector(filterSelected:) forControlEvents:UIControlEventTouchUpInside];
[thumbnailButton setTag:i];
[buttonBackground addSubview:thumbnailButton];
[filtersContainer addSubview:buttonBackground];
if ((i > (kFilterProMinimumIndex)) && ([self isProVersion]) == NO){
UIImageView *proTag = [[UIImageView alloc] initWithImage:nil];
CGRect proFrame = CGRectMake(buttonFrame.origin.x,
buttonFrame.origin.y + buttonFrame.size.height - kFilterProIconHeight-kFilterFrameThickness,
kFilterProIconWidth,
kFilterProIconHeight);
[proTag setBackgroundColor:[UIColor orangeColor]];
[proTag setFrame:proFrame];
[thumbnailButton addSubview:proTag];
[self.filterProTags addObject:proTag];
}
}
}
选择器方法:
-(void)filterSelected:(UIButton *)button
{
NSLog(@"Pressed button for index %i",button.tag);
int buttonTag = button.tag;
if ((buttonTag < kFilterProMinimumIndex+1) || ([self isProVersion] == YES)){
[self.imageView setImage:[self applyFilterAtIndex:buttonTag ToImage:self.workingImage]];
}
else {
[self processProPurchaseAfterAlert];
}
}
最佳答案
我发现其中有几个问题,但我不确定是哪些问题导致它崩溃。首先,您应该在 UIButton 上使用 buttonWithType:
实例化您的按钮:
UIButton *thumbnailButton = [UIButton buttonWithType:UIButtonTypeCustom];
[thumbnailButton setFrame:buttonFrame]
这是因为 UIButton 是一个类簇,你应该让操作系统给你正确的按钮。
其次,您将按钮添加为 UIImageView 的 subview ,默认情况下,userInteractionEnabled
设置为 NO .
This property is inherited from the UIView parent class. This class changes the default value of this property to NO.
你应该让按钮是一个大按钮,按钮的背景是你想要的图像。
关于ios - UIButton 突然停止工作,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/20125480/