[英]EXC_BAD_ACCESS on selector in objective C
我有一個UIBarButtonItem類別,我用自定義UIButton構建UIBarButtonItems,因為我發現UIButtons更容易自定義,然后是UIBarButtonItems。
現在,我想繼續使用BarButtonItem的目標和操作屬性,而不是使用按鈕中的那些屬性,以便BarButtonItem可以繼續在外部進行自定義,而無需任何人知道實現細節(即,它正在使用按鈕)內部)。
現在,為了做到這一點,我在我的類別中寫了這段代碼:
+ (UIBarButtonItem *)backBarButtonItemWithColor:(UIColor *)color
{
UIImage *closeIcon = [MyImageUtility navBarBackArrow];
if (color) closeIcon = [closeIcon imageWithColorOverlay:color];
UIButton *close = [[UIButton alloc] initWithFrame:CGRectMake(0.0f, 0.0f, closeIcon.size.width+10.0f, closeIcon.size.height+10.0f)];
UIBarButtonItem *item = [[UIBarButtonItem alloc] initWithCustomView:close];
[close setImage:closeIcon forState:UIControlStateNormal];
[close addTarget:item action:@selector(SD_executeBarButtonItemAction) forControlEvents:UIControlEventTouchUpInside];
return item;
}
- (void)SD_executeBarButtonItemAction
{
[self.target performSelector:self.action];
}
每當調用SD_executeBarButtonItemAction時,我在選擇器上得到一個exc_bad_access,雖然我不知道為什么。 有任何想法嗎? 有沒有解決的辦法?
謝謝!
編輯:
這是崩潰的選擇器調用的代碼:
void (^transition)(void) = ^(void) {
[self.rightContainer setFrame:[self offscreenContainerFrame]];
[self.centerContainer setAlpha:1.0f]; //TODO: this is unreliable in iOS6 -- we should add a view to the top of it to darken
[self.centerContainer setTransform:CGAffineTransformIdentity];
};
[self notifyWillShowPrimaryViewController];
[self performBlock:transition animated:YES completion:^(BOOL finished) {
[self notifyDidShowPrimaryViewController];
[self setForegroundController:self.primaryNavigationController];
if (block != NULL) block(finished);
}];
您的代碼是遞歸調用。
- (void)SD_executeBarButtonItemAction
{
[self.target performSelector:self.action];
}
你設置如下:
[close addTarget:item action:@selector(SD_executeBarButtonItemAction) forControlEvents:UIControlEventTouchUpInside];
其中item
是UIBarButtonItem
。
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.