iOS中 本地通知/本地通知详解 韩俊强的博客
Posted 韩俊强
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布局如下:(重点讲本地通知)
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Notification是智能手机应用编程中非常常用的一种传递信息的机制,而且可以非常好的节省资源,不用消耗资源来不停地检查信息状态(Pooling),在ios下应用分为两种不同的Notification种类,本地和远程。本地的Notification由iOS下NotificationManager统一管理,只需要将封装好的本地Notification对象加入到系统Notification管理机制队列中,系统会在指定的时间激发将本地Notification,应用只需设计好处理Notification的方法就完成了整个Notification流程了。
本地Notification所使用的对象是UILocalNotification,UILocalNotification的属性涵盖了所有处理Notification需要的内容。UILocalNotification的属性有fireDate、timeZone、repeatInterval、repeatCalendar、alertBody、 alertAction、hasAction、alertLaunchImage、applicationIconBadgeNumber、 soundName和userInfo。
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1.首先要明白模拟器和真机的区别:模拟器不会有音频提示,另外就是没有检测允许接受通知,所以我补充一下几点:
1.添加监测通知:
if ([UIApplication instancesRespondToSelector:@selector(registerUserNotificationSettings:)]){ [application registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert|UIUserNotificationTypeBadge|UIUserNotificationTypeSound categories:nil]]; }
上代码:
#import "ViewController.h" #import "DetailViewController.h" @interface ViewController () @property (weak, nonatomic) IBOutlet UIButton *schedule; @property (weak, nonatomic) IBOutlet UIButton *unSchedule; @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. } // 调度通知 - (IBAction)schedule:(UIButton *)sender { // 1.创建通知 UILocalNotification *ln = [[UILocalNotification alloc]init]; if (ln) { // 设置时区 ln.timeZone = [NSTimeZone defaultTimeZone]; // 通知第一次发出的时间 ln.fireDate = [[NSDate date]dateByAddingTimeInterval:5]; // 2.设置通知属性 ln.soundName = @"click.wav"; // 音效文件名 // 通知的具体内容 ln.alertBody = @"重大新闻:小韩哥的博客又更新了,赶快进来看看吧!...."; // 锁屏界面显示的小标题,完整标题:(“滑动来”+小标题) ln.alertAction = @"查看新闻吧"; // 设置app图标数字 ln.applicationIconBadgeNumber = 10; // 设置app的额外信息 ln.userInfo = @{ @"icon":@"text.png", @"title":@"重大新闻", @"time":@"2016-02-28", @"body":@"重大新闻:小韩哥的博客又更新了,赶快进来看看吧!" }; // 设置重启图片 ln.alertLaunchImage = @"101339g76j7j9t2zgzdvkj.jpg"; // 设置重复发出通知的时间间隔 // ln.repeatInterval = NSCalendarUnitMinute; // 3.调度通知(启动任务,在规定的时间发出通知) [[UIApplication sharedApplication]scheduleLocalNotification:ln]; // 直接发出通知没意义 // [[UIApplication sharedApplication]presentLocalNotificationNow:ln]; } } - (IBAction)noSchedule:(UIButton *)sender { // [[UIApplication sharedApplication]cancelAllLocalNotifications]; // 已经发出且过期的通知会从数组里自动移除 NSArray *notes = [UIApplication sharedApplication].scheduledLocalNotifications; NSLog(@"%@",notes); } - (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(UILocalNotification *)note { DetailViewController *detailVC = segue.destinationViewController; detailVC.userInfo = note.userInfo; } @end
2.通知详情页面设置基本属性:
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.h #import <UIKit/UIKit.h> @interface DetailViewController : UIViewController @property (nonatomic, strong) NSDictionary *userInfo; @end .m #import "DetailViewController.h" @interface DetailViewController () @property (weak, nonatomic) IBOutlet UILabel *userInfoContent; @end @implementation DetailViewController - (void)viewDidLoad { [super viewDidLoad]; self.userInfoContent.text = self.userInfo[@"body"]; } - (void)setUserInfo:(NSDictionary *)userInfo { _userInfo = userInfo; } @end
3.didFinishLaunchingWithOptions 实时监测:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { //注册本地通知 if ([UIApplication instancesRespondToSelector:@selector(registerUserNotificationSettings:)]){ [application registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert|UIUserNotificationTypeBadge|UIUserNotificationTypeSound categories:nil]]; } // NSLog(@"-----didFinishLaunchingWithOptions---"); UILabel *label = [[UILabel alloc]init]; label.frame = CGRectMake(0, 64, 320, 100); label.backgroundColor = [UIColor redColor]; label.font = [UIFont systemFontOfSize:11]; label.numberOfLines = 0; label.textColor = [UIColor whiteColor]; label.text = [launchOptions description]; [[[self.window.rootViewController.childViewControllers firstObject] view]addSubview:label]; UILocalNotification *note = launchOptions[UIApplicationLaunchOptionsURLKey]; if (note) { label.text = @"点击本地通知启动的程序"; }else{ label.text = @"直接点击app图标启动的程序"; } self.label = label; return YES; } /** * 当用户点击本地通知进入app的时候调用(app当时并没有被关闭) * 若app已关闭不会被调用此方法 */ - (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification { self.label.text = @"点击通知再次回到前台"; ViewController *homeVC = [self.window.rootViewController.childViewControllers firstObject]; // [homeVC performSegueWithIdentifier:@"toHome" sender:notification]; [homeVC performSegueWithIdentifier:@"toHome" sender:notification]; }三种情况展示:(重要)
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1.程序运行在后台
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Demo下载地址Github: https://github.com/XiaoHanGe/LocalNotification
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