我目前有一个奇怪的问题。 我有一个带有pickerView的动作表,带有两个按钮(取消,然后确定)。 它们完美地工作,直到我在选择器中选择一个值,然后单击我的TabBarController的第一个按钮,它包含我的NavigationController。
我的动作表在我的.h中声明并且具有属性(非原子,保留),我在我的dealloc函数中释放它。
如果我发布这个对象,我有一个exc_bad_access,我不知道为什么因为我分配了它。
这是我的函数,如果是nil则创建我的Actionsheet并构建它。
- (IBAction)select_marque :(id)sender
{
if (!actionSheet_marque)
{
actionSheet_marque = [[UIActionSheet alloc] initWithTitle:nil delegate:nil cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:nil];
}
[actionSheet_marque setActionSheetStyle:UIActionSheetStyleBlackTranslucent];
CGRect pickerFrame = CGRectMake(0, 40, 0, 0);
picker_marque = [[UIPickerView alloc] initWithFrame: pickerFrame];
picker_marque.showsSelectionIndicator = YES;
picker_marque.dataSource = self;
picker_marque.delegate = self;
[actionSheet_marque addSubview: picker_marque];
[picker_marque release];
UILabel *lbl = [[UILabel alloc] initWithFrame: CGRectMake(110, 7.0f, 150.0f, 30.0f)];
lbl.text = @"Marque";
lbl.backgroundColor = [UIColor clearColor];
lbl.textColor = [UIColor whiteColor];
[actionSheet_marque addSubview:lbl];
[lbl release];
UISegmentedControl *closeButton = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObject:@"Ok"]];
closeButton.momentary = YES;
closeButton.frame = CGRectMake(260, 7.0f, 50.0f, 30.0f);
closeButton.segmentedControlStyle = UISegmentedControlStyleBar;
closeButton.tintColor = [UIColor blueColor];
[closeButton addTarget:self action:@selector(dismissActionSheet:) forControlEvents:UIControlEventValueChanged];
[actionSheet_marque addSubview:closeButton];
[closeButton release];
UISegmentedControl *cancelButton = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObject:@"Cancel"]];
cancelButton.momentary = YES;
cancelButton.frame = CGRectMake(5, 7.0f, 50.0f, 30.0f);
cancelButton.segmentedControlStyle = UISegmentedControlStyleBar;
cancelButton.tintColor = [UIColor redColor];
cancelButton.tag = 1;
[cancelButton addTarget:self action:@selector(cancelActionSheet:) forControlEvents:UIControlEventValueChanged];
[actionSheet_marque addSubview:cancelButton];
[cancelButton release];
[actionSheet_marque showInView: self.navigationController.view];
[actionSheet_marque setBounds:CGRectMake(0, 0, 320, 485)];
}
我还检查dealloc方法中的指针是否为n。
由于
答案 0 :(得分:0)
如果您拥有UIActionsheet的属性,则在分配时应使用self.actionSheet_marque。尝试更改这样的代码
if (!actionSheet_marque)
{
self.actionSheet_marque = [[[UIActionSheet alloc] initWithTitle:nil delegate:nil cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:nil] autorelease];
}
[self.actionSheet_marque setActionSheetStyle:UIActionSheetStyleBlackTranslucent];
除了这行(!actionSheet_marque)
之外的整个函数