系统默认状态栏的字体颜色为黑色,即UIStatusBarStyle=UIStatusBarStyleDefault,同时背景颜色和self.view.backgroundColor颜色一致,如下图所示:
假如我想让状态栏颜色设置成红色,字体仍为黑色,可以在需要显示的那一页进行如下设置:(最好写在viewWillAppear里面)
//设置状态栏颜色
- (void)setStatusBarBackgroundColor:(UIColor *)color {
UIView *statusBar = [[[UIApplication sharedApplication] valueForKey:@"statusBarWindow"] valueForKey:@"statusBar"];
if ([statusBar respondsToSelector:@selector(setBackgroundColor:)]) {
statusBar.backgroundColor = color;
}
}
- (void)viewDidLoad {
[super viewDidLoad];
[self setStatusBarBackgroundColor:[UIColor redColor]];
self.view.backgroundColor = [UIColor yellowColor];
}
效果如下:
假如此时我想让状态栏文字颜色变成白色,可以这样操作:
在上面代码的基础上再添加下面一段代码:
- (UIStatusBarStyle)preferredStatusBarStyle{
return UIStatusBarStyleLightContent;
}
效果如下:
问题来了,当你在这一页点击按钮进入下一页后,状态栏背景颜色不变,还是红色,而字体颜色却变成黑色了,比较闹心!可以通过下面的方法随心所欲的在任意一页修改状态栏的字体颜色(字体颜色只有白色和黑色)和背景颜色(直接复制到项目中即可
//设置字体颜色
- (UIStatusBarStyle)preferredStatusBarStyle{
return UIStatusBarStyleLightContent;//白色
}
//设置状态栏颜色
- (void)setStatusBarBackgroundColor:(UIColor *)color {
UIView *statusBar = [[[UIApplication sharedApplication] valueForKey:@"statusBarWindow"] valueForKey:@"statusBar"];
if ([statusBar respondsToSelector:@selector(setBackgroundColor:)]) {
statusBar.backgroundColor = color;
}
}
//!!!重点在viewWillAppear方法里调用下面两个方法
-(void)viewWillAppear:(BOOL)animated{
[self preferredStatusBarStyle];
[self setStatusBarBackgroundColor:[UIColor redColor]];
}
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor = [UIColor yellowColor];
}
下面的效果是第一页要红底白字,第二页要绿底黑字,返回后也是正常显示
当我在上面的基础上添加了导航条后,会发现字体颜色由之前的白色变成黑色了,背景颜色倒没有发生变化
不用担心,可以通过下面的方法完美解决:
//设置状态栏颜色
- (void)setStatusBarBackgroundColor:(UIColor *)color {
UIView *statusBar = [[[UIApplication sharedApplication] valueForKey:@"statusBarWindow"] valueForKey:@"statusBar"];
if ([statusBar respondsToSelector:@selector(setBackgroundColor:)]) {
statusBar.backgroundColor = color;
}
}
-(void)viewWillAppear:(BOOL)animated{
[self setStatusBarBackgroundColor:[UIColor redColor]];
[UIApplication sharedApplication].statusBarStyle=UIStatusBarStyleLightContent;
}
--->!!!同时别忘了在info plist里面将View controller-based status bar appearance设置成NO,(默认是YES)
现在基本的设备都适配ios7以上设备,默认的状态栏字体颜色是黑色
[UIApplicationsharedApplication].statusBarStyle=UIStatusBarStyleDefault;
现在基本的设备都适配ios7以上设备,默认的状态栏字体颜色是黑色
[UIApplicationsharedApplication].statusBarStyle=UIStatusBarStyleLightContent;
Demo下载地址:https://github.com/zhuchenglong/StatusBarDemo
//设置状态栏颜色
- (void)setStatusBarBackgroundColor:(UIColor *)color {
UIView *statusBar = [[[UIApplication sharedApplication] valueForKey:@"statusBarWindow"] valueForKey:@"statusBar"];
NSLog(@"statusBar.backgroundColor--->%@",statusBar.backgroundColor);
if ([statusBar respondsToSelector:@selector(setBackgroundColor:)]) {
statusBar.backgroundColor = color;
}
}
- (UIStatusBarStyle)preferredStatusBarStyle{
return UIStatusBarStyleLightContent;//白色
}
- (void)viewDidLoad {
[super viewDidLoad];
//Y起点在导航条下面
self.edgesForExtendedLayout = UIRectEdgeNone;
//设置navigationItem返回的文字
UIBarButtonItem *item = [[UIBarButtonItem alloc] initWithTitle:@"" style:UIBarButtonItemStyleDone target:nil action:nil];
self.navigationItem.backBarButtonItem = item;
}
-(void)viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];
//设置导航条透明度
self.navigationController.navigationBar.translucent = NO;//不透明
[[[self.navigationController.navigationBar subviews] objectAtIndex:0] setAlpha:1];
//图标颜色为黑色
[self.navigationController.navigationBar setTintColor:[UIColor blackColor]];
//导航栏背景颜色
[self.navigationController.navigationBar setBarTintColor:[UIColor whiteColor]];
//导航条下面的黑线
self.navigationController.navigationBar.clipsToBounds = NO;
//刷新状态栏背景颜色
// [self setNeedsStatusBarAppearanceUpdate];
//设置状态栏颜色
[self setStatusBarBackgroundColor:[UIColor blackColor]];
}
//一定要在viewWillDisappear里面写,如果写在viewDidDisappear里面会出问题!!!!
- (void)viewWillDisappear:(BOOL)animated{
[super viewWillDisappear:animated];
//为了不影响其他页面在viewDidDisappear做以下设置
self.navigationController.navigationBar.translucent = YES;//透明
[self setStatusBarBackgroundColor:[UIColor clearColor]];
}
效果: