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我現在正在開發支持iOS 4.3和5.0的應用程序。導航欄問題iphone 4.3
我的代碼可以正常工作5.0,但會導致4.3中的棘手問題。
問題是:
我有一個視圖,其中有一個tableView。該視圖具有導航欄,其中包含左側和右側導航欄項目。一旦我選擇表格視圖中的行(併到達相應的視圖)並返回,左側和右側的導航欄項目「消失」。
過去幾個小時我一直在這個爛攤子上,有人得到了治療?
這是我已經做了:
這是實用的方法,我稱之爲視負載時。
+ (void)setNavigationBarContents:(UIViewController *)view
{
UIImage *topBarimage=[UIImage imageNamed:NAVIGATION_BAR_IMAGE];
if([view.navigationController.navigationBar respondsToSelector:@selector(setBackgroundImage:forBarMetrics:)]) {
[view.navigationController.navigationBar setBackgroundImage:topBarimage forBarMetrics:UIBarMetricsDefault];
}
else
{
[view.navigationController.navigationBar insertSubview:[[UIImageView alloc] initWithImage:topBarimage] aboveSubview:view.navigationController.navigationBar];
}
UIImage *logo=[UIImage imageNamed:LOGO];
UIImageView *logoView=[[UIImageView alloc]initWithImage:logo];
view.navigationItem.titleView = logoView;
UIImage *settingsButtonImage= [UIImage imageNamed:NAVIGATION_SETTINGS];
UIButton *rightBarButton = [UIButton buttonWithType: UIButtonTypeCustom];
[rightBarButton setBackgroundImage: settingsButtonImage forState:UIControlStateNormal];
[rightBarButton addTarget: view action:@selector(settingsButton:) forControlEvents:UIControlEventTouchUpInside];
rightBarButton.frame = CGRectMake(0, 0, 50, 40);
view.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView: rightBarButton];
UIImage *logoutButtonImage= [UIImage imageNamed:LOGOUT];
UIButton *leftBarButton = [UIButton buttonWithType: UIButtonTypeCustom];
[leftBarButton setBackgroundImage: logoutButtonImage forState:UIControlStateNormal];
[leftBarButton addTarget: view action:@selector(logout:) forControlEvents:UIControlEventTouchUpInside];
leftBarButton.frame = CGRectMake(0, 0, 65, 32);
view.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView: leftBarButton];
}
已經嘗試在viewDidLoad和viewWillAppear中調用這個,但徒勞無功。
這就是我在viewController中調用它的方法。
- (void)viewDidLoad
{
[super viewDidLoad];
//other setups here.
[Utility setNavigationBarContents:self];
}
嘗試在viewWillAppear中這段代碼[實用setNavigationBarContents:自我]。 – Splendid 2012-02-22 07:10:33
我已經嘗試過了,正如我之前所說的。感謝您的快速回復 – Guru 2012-02-22 07:14:47
只有酒吧按鈕項消失或導航欄消失? – Splendid 2012-02-22 10:55:41