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我已經使用了UITapGestureRecognizer噸次,但在這種情況下,當tap發生時我得到了EXC_BAD_ACCESS。我認爲這與我將其添加到警報類型疊加視圖的事實有關。而且由於某些原因,即使在屏幕上,重疊視圖也不會被保留。UITapGestureRecognizer EXC_BAD_ACCESS在自包含的UIView子類中
我創建這樣的觀點:
HelperView *testHelper = [HelperView helperWithBodyText:@"test text"];
[testHelper presentAtPoint:screenCenter];
在HelperView.m的簡便方法是這樣的:
+ (id)helperWithBodyText:(NSString*)text
{
return [[self alloc] initWithFrame:CGRectZero bodyText:text];
}
而其餘代碼如下所示:
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
self.container = [[AGWindowView alloc] initAndAddToKeyWindow];
self.container.supportedInterfaceOrientations = UIInterfaceOrientationMaskLandscapeRight;
self.overlay = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)];
self.overlay.backgroundColor = [UIColor redColor];
self.overlay.alpha = 0.6;
[self.container addSubviewAndFillBounds:self.overlay]; //this fills the screen with a transparent red color, for testing
UITapGestureRecognizer * tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(dismissMe:)];
[self.overlay addGestureRecognizer:tap]; //I want to dismiss the whole view if the overlay is tapped
self.content = [[UIView alloc] initWithFrame:CGRectZero];
}
return self;
}
- (id)initWithFrame:(CGRect)frame bodyText:(NSString*)bodyText
{
self = [self initWithFrame:frame];
if (self) {
//TEST frame
self.content.frame = CGRectMake(0, 0, 217, 134);
// Initialization code
UIImage *bgImage = [[UIImage imageNamed:@"helper-bg"]
resizableImageWithCapInsets:UIEdgeInsetsMake(30, 28, 20, 20)];
UIImageView *bgImgView = [[UIImageView alloc] initWithImage:bgImage];
bgImgView.bounds = self.content.frame;
[self.content addSubview:bgImgView];
}
return self;
}
- (void)presentAtPoint:(CGPoint)loc
{
CGPoint newPoint = [self.container convertPoint:loc toView:self.container];
self.content.center = newPoint;
[self.container addSubview:self.content];
}
- (void)dismissMe:(UITapGestureRecognizer*)recognizer
{
//this never happens - I get EXC_BAD_ACCESS when I tap the overlay
}
感謝您的信息。這就是我所想的。但是我希望這個HelperView能夠在我需要的時候創建,並且我不希望每個視圖控制器都要求有一個強大的實例變量。例如,UIAlertView不需要強大的實例變量。我如何保留一個獨立的視圖? – soleil
另一個例子是這樣的:https://github.com/chrismiles/CMPopTipView。我已經看過代碼,但我不知道它是如何保留的。 – soleil
把'[self.container addSubview:self.content]'改成'[self.container addSubview:self]',你會沒事的,除了內存泄漏。 –