Question

我的顶栏有问题，我使用MainViewController中使用的函数初始化viewDidLoad中的颜色：

-(void)_initCustomTopBar
{
NSLog(@"init");
UIColor *barColour = [UIColor colorWithRed:22.0f/255.0f green:61.0f/255.0f blue:121.0f/255.0f alpha:1.0f];
UIView *colourView = [[UIView alloc] initWithFrame:CGRectMake(0.f, -20.f, 320.f, 64.f)];
colourView.opaque = NO;
colourView.alpha = .7f;
//colourView.backgroundColor = barColour;
self.navigationController.navigationBar.barTintColor = barColour;
self.navigationController.navigationBar.tintColor = [UIColor whiteColor];
[self.navigationController.navigationBar.layer insertSublayer:colourView.layer atIndex:1];
NSDictionary *attributes = [NSDictionary dictionaryWithObjectsAndKeys:[UIFont
                                                                       fontWithName:@"Helvetica Neue" size:20], NSFontAttributeName,
                            [UIColor whiteColor], NSForegroundColorAttributeName, nil];


self.navigationController.navigationBar.titleTextAttributes = attributes;
}

但是当我更改视图时，顶部栏变为灰色，当我点击返回时，MainViewController顶栏变为灰色。知道它变成灰色的原因吗？那是多么正确？

Answer 1

在viewWillAppear方法中调用此_initCustomTopBar

-(void)viewWillAppear:(BOOL)animated
{

[self _initCustomTopBar];

}

当我们改变视图时，顶部栏颜色会发生变化

1 个答案: