1.状态栏设置
全局设置状态栏：设置info.plist文件的View controller-based status bar appearance 选项 YES or NO
1.1.如果选择NO,则全局设置代码有效，分页设置代码无效
1.2.如果选择YES或者没有设置，则分页设置代码有效，代码全局设置代码无效
代码控制：
//设置状态栏的字体颜色模式[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleLightContent];//字体颜色只有两种选择//设置状态栏是否隐藏[[UIApplication sharedApplication] setStatusBarHidden:YES];
分页控制：
- (UIStatusBarStyle)preferredStatusBarStyle { //返回白色return UIStatusBarStyleLightContent;//返回黑色//return UIStatusBarStyleDefault;//例如 return self.isDownState ? UIStatusBarStyleLightContent : UIStatusBarStyleDefault;（在用的地方调用[self setNeedsStatusBarAppearanceUpdate]刷新）}- (BOOL)prefersStatusBarHidden {return YES;}[self setNeedsStatusBarAppearanceUpdate];//调用刷新
question：很多页面状态栏字体是黑色的，个别页面是白色的，怎么处理？
answer：在ViewController的基类加如下，要白色的页面自行处理
- (void)viewWillAppear:(BOOL)animated {[super viewWillAppear:animated];[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleDefault];}
强制修改状态栏颜色：
UIView *statusBar = [[[UIApplication sharedApplication] valueForKey:@"statusBarWindow"] valueForKey:@"statusBar"];if ([statusBar respondsToSelector:@selector(setBackgroundColor:)]) {statusBar.backgroundColor = color;//例如color = [UIColor whiteColor] }
2.导航栏设置
设置导航栏字体颜色：
NSDictionary* textAttrs = @{NSForegroundColorAttributeName:[UIColor whiteColor],NSFontAttributeName:[UIFont fontWithName:@"Helvetica"size:18.0],};[self.navigationBar setTitleTextAttributes:textAttrs];
导航栏的显示和隐藏：
//self.navigationController.navigationBar.hidden = NO;[self.navigationController setNavigationBarHidden:NO animated:YES];
注：有两种形式。区别：A页面(导航栏隐藏) -> B页面(导航栏显示)，要用第二种，不然B页面手势返回时，中间过程很难看！！！
注2：A页面(导航栏隐藏) -> B页面(导航栏隐藏) / A页面(导航栏隐藏) -> C页面(导航栏显示) /A页面(导航栏隐藏) -> D页面(导航栏显示).....可以定义一个全局变量，在nav vc中控制，A/B页面个自写上，例如如下：
[GlobalVarClass sharedInstance].isMyNavAnimated
- (UIViewController *)popViewControllerAnimated:(BOOL)animated {UIViewController *viewController = [super popViewControllerAnimated:animated];if ([viewController isKindOfClass:[B class]]) {[GlobalVarClass sharedInstance].isMyNavAnimated = NO;} else {[GlobalVarClass sharedInstance].isMyNavAnimated = YES; }return viewController;}- (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated {[super pushViewController:viewController animated:animated];if ([viewController isKindOfClass:[B class]]) {[GlobalVarClass sharedInstance].isMyNavAnimated = NO;} else {[GlobalVarClass sharedInstance].isMyNavAnimated = YES;}}
- (void)viewWillAppear:(BOOL)animated {[super viewWillAppear:animated];[self.navigationController setNavigationBarHidden:YES animated:[GlobalVarClass sharedInstance].isMyNavAnimated];}- (void)viewWillDisappear:(BOOL)animated {[super viewWillDisappear:animated];[self.navigationController setNavigationBarHidden:NO animated:[GlobalVarClass sharedInstance].isMyNavAnimated];}
导航栏左右UIBarButtonItem：
1.图片+文字
UIButton *saveBtn = [UIButton buttonWithType:UIButtonTypeCustom];saveBtn.frame = CGRectMake(5, 0, 60,44);[saveBtn addTarget:self action:@selector(clickToSearch) forControlEvents:UIControlEventTouchUpInside];[saveBtn setTitle:@"搜索" forState:UIControlStateNormal];[saveBtn setImage:[UIImage imageNamed:@"searchIconGray"] forState:UIControlStateNormal];[saveBtn setTitleColor:UIColorFromRGB(0x666666) forState:UIControlStateNormal];UIBarButtonItem *saveItem = [[UIBarButtonItem alloc] initWithCustomView:saveBtn];self.navigationItem.rightBarButtonItem = saveItem;
2.文字
UIBarButtonItem *rightItem = [[UIBarButtonItem alloc] initWithTitle:@"注册" style:UIBarButtonItemStylePlain target:self action:@selector(rightBarItemClicked:)];self.navigationItem.rightBarButtonItem = rightItem;
3.图片
UIBarButtonItem *rightItem = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"allGame_icon"] style:UIBarButtonItemStylePlain target:self action:@selector(didActionShowGameType)];self.navigationItem.rightBarButtonItem = rightItem;
注：1，2，3可扩张包装到UIViewController+类文件中，例UIViewController+BarButtonItemBase中（2.3同理)：
h文件@interface UIViewController (BarButtonItemBase)- (void)loadRightItemWithImage:(NSString *)image Title:(NSString *)title action:(SEL)action;@endm文件#import "UIViewController+BarButtonItemBase.h"@implementation UIViewController (BarButtonItemBase)- (void)loadRightItemWithImage:(NSString *)image Title:(NSString *)title action:(SEL)action{UIBarButtonItem *saveItem;UIButton *saveBtn = [UIButton buttonWithType:UIButtonTypeCustom];saveBtn.frame = CGRectMake(5, 0, 60,44);[saveBtn addTarget:self action:action forControlEvents:UIControlEventTouchUpInside];[saveBtn setTitle:title forState:UIControlStateNormal];[saveBtn setTitleColor:UIColorFromRGB(0x666666) forState:UIControlStateNormal];[saveBtn setImage:[UIImage imageNamed:image] forState:UIControlStateNormal];saveItem = [[UIBarButtonItem alloc] initWithCustomView:saveBtn];self.navigationItem.rightBarButtonItem = saveItem;}@end
如果觉得《状态栏 （+强制修改状态栏颜色）/ 导航栏 / 底部导航Tabbar 常用设置》对你有帮助，请点赞、收藏，并留下你的观点哦！
