038改变状态栏的颜色（扩展知识：关于iOS不同版本的消息通知知识）

效果如下：

ViewController.h

1 #import <UIKit/UIKit.h>

2 

3 @interface ViewController : UIViewController

4 @end

ViewController.m

 1 #import "ViewController.h"

 2 

 3 @interface ViewController ()

 4 - (void)userNotificationDidPush:(UIApplication *)application;

 5 @end

 6 

 7 @implementation ViewController

 8 

 9 - (void)viewDidLoad {

10     [super viewDidLoad];   

11 

12     UILabel *lblMessage = [[UILabel alloc] initWithFrame:CGRectInset(self.view.bounds, 20, 20)];

13     lblMessage.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;

14     lblMessage.text = @"需要在PL文件新增行View controller-based status bar appearance=NO；触摸画面后，切换状态条颜色";

15     lblMessage.numberOfLines = 0;

16     lblMessage.textAlignment = NSTextAlignmentCenter;

17     lblMessage.textColor = [UIColor brownColor];

18     lblMessage.backgroundColor = [UIColor whiteColor];

19     [self.view addSubview:lblMessage];   

20 

21     self.navigationItem.prompt = @"看看状态栏的颜色变化";

22     self.navigationItem.title = @"改变状态栏的颜色";

23 }

24 

25 - (void)didReceiveMemoryWarning {

26     [super didReceiveMemoryWarning];

27     // Dispose of any resources that can be recreated.

28 }

29 

30 - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {

31     UIApplication *application = [UIApplication sharedApplication];

32     //状态栏样式切换

33     if (application.statusBarStyle == UIStatusBarStyleDefault) {

34         application.statusBarStyle = UIStatusBarStyleLightContent;

35     } else {

36         application.statusBarStyle = UIStatusBarStyleDefault;

37     }   

38 

39     [self userNotificationDidPush:application];

40 }

41 

42 /**

43  *  扩展知识：关于iOS不同版本的消息通知知识

44  *

45  *  @param application 共享的UIApplication单例模式对象实例

46  */

47 - (void)userNotificationDidPush:(UIApplication *)application {

48     //应用程序图标标记数

49     //因为registerUserNotificationSettings方法为iOS8的方法，无法在iOS8以下版本使用；所以需要分别处理

50     if([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0) {

51         UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeBadge categories:nil];

52         [application registerUserNotificationSettings:settings];

53     } else {

54         [application registerForRemoteNotifications];

55     }

56     application.applicationIconBadgeNumber = 3; //应用程序图标的消息标记数

57     //self.tabBarItem.badgeValue = @"3"; //底部选项卡的消息标记数   

58 

59     /* 判断Push推送通知是否打开；同上面一样道理需要分别处理

60      UIRemoteNotificationType types;

61      if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0) {

62      types = [[UIApplication sharedApplication] currentUserNotificationSettings].types;

63      } else {

64      types = [[UIApplication sharedApplication] enabledRemoteNotificationTypes];

65      }

66      BOOL isEnabledNotification = types & UIRemoteNotificationTypeAlert;

67     */

68 }

69 

70 @end

AppDelegate.h

1 #import <UIKit/UIKit.h>

2 

3 @interface AppDelegate : UIResponder <UIApplicationDelegate>

4 @property (strong, nonatomic) UIWindow *window;

5 @property (strong, nonatomic) UINavigationController *navigationController;

6 

7 @end

AppDelegate.m

 1 #import "AppDelegate.h"

 2 #import "ViewController.h"

 3 

 4 @interface AppDelegate ()

 5 @end

 6 

 7 @implementation AppDelegate

 8 

 9 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

10     _window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

11     ViewController *viewController = [[ViewController alloc] init];

12     _navigationController = [[UINavigationController alloc] initWithRootViewController:viewController];

13     _window.rootViewController = _navigationController;

14     [_window addSubview:_navigationController.view];

15     [_window makeKeyAndVisible];

16     return YES;

17 }

18 

19 - (void)applicationWillResignActive:(UIApplication *)application {

20 }

21 

22 - (void)applicationDidEnterBackground:(UIApplication *)application {

23 }

24 

25 - (void)applicationWillEnterForeground:(UIApplication *)application {

26 }

27 

28 - (void)applicationDidBecomeActive:(UIApplication *)application {

29 }

30 

31 - (void)applicationWillTerminate:(UIApplication *)application {

32 }

33 

34 @end