如何使状态栏半透明？

Question

我需要帮助制作状态栏半透明。在app的某些部分，它的工作正常，而在其他部分则没有。

如果我显示导航栏，这就是状态栏的来源。

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。使用导航栏按下背景图像。我已经以编程方式设置了基本类的背景图像。

-(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

实际上，您需要完全删除默认标题背景（statusBar + navigationBar）并设置自己的标题：

// 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];