如何使状态栏半透明？

Question

我需要帮助使状态栏半透明。在应用程序的某些部分它工作正常，而在其他部分则不是。

如果我显示导航栏，状态栏就是这样出现的。

这是我删除导航栏时的显示方式。我需要显示导航栏，但状态栏应该是半透明的。背景图像通过导航向下推 bar.I 以编程方式设置背景图像，使基础成为 class。

-(void)addBackGroundImage{

self.backGroundImage=[[UIImageView alloc] init];
self.backGroundImage.translatesAutoresizingMaskIntoConstraints=NO;
[self.backGroundImage setImage:[UIImage imageNamed:@"background"]];
self.backGroundImage.contentMode=UIViewContentModeScaleAspectFill;
[self.view addSubview:self.backGroundImage];

[self.view sendSubviewToBack:self.backGroundImage];
[self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"|[_backGroundImage]|" options:0 metrics:nil views:NSDictionaryOfVariableBindings(_backGroundImage)]];
[self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|-(0)-[_backGroundImage]|" options:0 metrics:nil views:NSDictionaryOfVariableBindings(_backGroundImage)]];

AppDelegate *objAppDelegate=[[UIApplication sharedApplication] delegate];
UIView *view=[[UIView alloc] initWithFrame:CGRectMake(0, 0,self.view.frame.size.width, 20)];
view.backgroundColor=[UIColor clearColor];
[view setAlpha:0.2];
}

-(void)updateBackgroundImage:(UIImage *)bgImage{

[self.backGroundImage setImage:bgImage];
}

Answer 1

这实际上是您需要完全删除默认 header 背景（statusBar + navigationBar）并设置您自己的背景：

// ViewController.m

self.navigationController.navigationBar.backgroundColor = [UIColor clearColor];
self.navigationController.navigationBar.tintColor = [UIColor yourColor]; // Set your tint color
self.navigationController.navigationBar.shadowImage = [UIImage new];
self.navigationController.navigationBar.translucent = YES;
self.navigationController.navigationBar.opaque = NO;
[self.navigationController.navigationBar setBackgroundImage:[UIImage new] forBarMetrics:UIBarMetricsDefault];
UIView *bgView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width, 64)];
bgView.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"Your_Background_Image"]];
[self.view addSubview:bgView];

如何使状态栏半透明？

How to make status bar translucent?

objective-c

uinavigationbar