Question

我不确定以下代码无效的原因：

UIBarButtonItem *newButton = [[UIBarButtonItem alloc] initWithTitle:@"New" style:UIBarButtonItemStyleBordered target:self action:@selector(newClicked:)];

UIBarButtonItem *shareButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAction target:self action:@selector(share:)];

self.navigationItem.rightBarButtonItems = [NSArray arrayWithObjects:newButton, shareButton, nil];

它只在导航栏上显示“newButton”UIBarButtonItem，而不是“shareButton”按钮。

Answer 1

rightBarButtonItems 位于ios 5中。我认为问题在于对象名称new，请将此更改为任何其他名称，例如newButton或类似名称。因为new是memory

中allocation C++使用的关键字

Answer 2

看起来问题与疑问代码后面的代码有关：

UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 400, 44)];
label.backgroundColor = [UIColor clearColor];
label.font = [UIFont fontWithName:@"Marker Felt" size:26.0];
label.shadowColor = [UIColor colorWithWhite:0.0 alpha:0.5];
label.textAlignment = UITextAlignmentCenter;
label.textColor =[UIColor whiteColor];
label.text=self.title;
self.navigationItem.titleView = label;
[label release];

现在发布此内容以防其他人遇到此问题！

添加两个按钮到rightBarButtonItems不起作用

2 个答案: