iOS 本地消息推送机制

转发自:https://www.jianshu.com/p/e347f999ed95     //已经废除的

            http://blog.csdn.net/three_zhang/article/details/70170215

    http://www.cocoachina.com/ios/20160926/17645.html   //详解篇 

            https://www.jianshu.com/p/c58f8322a278    //详解篇 

在iOS10苹果废弃了之前的UILocalNotification,而采用了新的UserNotifications Framework来推送通知。现在先说一下iOS10之前的本地推送流程!

iOS 10之前

注册通知

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.


    if ([[UIDevice currentDevice].systemVersion floatValue] > 8.0) { UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert | UIUserNotificationTypeBadge | UIUserNotificationTypeSound categories:nil]; [application registerUserNotificationSettings:settings]; } return YES; } 

 

发送通知

// 1.创建一个本地通知
    UILocalNotification *localNote = [[UILocalNotification alloc] init];

    // 1.1.设置通知发出的时间
    localNote.fireDate = [NSDate dateWithTimeIntervalSinceNow:5]; // 1.2.设置通知内容 localNote.alertBody = @"这是一个本地推送"; // 1.3.设置锁屏时,字体下方显示的一个文字 localNote.alertAction = @"看我"; localNote.hasAction = YES; // 1.4.设置启动图片(通过通知打开的) localNote.alertLaunchImage = @"../Documents/1.jpg"; // 1.5.设置通过到来的声音 localNote.soundName = UILocalNotificationDefaultSoundName; // 1.6.设置应用图标左上角显示的数字 localNote.applicationIconBadgeNumber = 1; // 1.7.设置一些额外的信息 localNote.userInfo = @{@"hello" : @"how are you", @"msg" : @"success"}; // 2.执行通知 [[UIApplication sharedApplication] scheduleLocalNotification:localNote];

 

这里要说一点,就是iOS系统限制了注册本地推送的数量,最大的注册量为64条。

接收推送

  • 应用在前台或后台,未被杀死时。
//程序处于前台或后台时调用
- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification{

    NSLog(@"333这里被调用"); UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"Title" message:@"程序在前台或后台,未被杀死,点击通知栏调用" delegate:self cancelButtonTitle:@"cancel" otherButtonTitles:@"ok", nil]; [alert show]; }

 

 

  • 程序已被杀死时
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.


    if (launchOptions[UIApplicationLaunchOptionsLocalNotificationKey]) { //添加处理代码 NSLog(@"666这里被调用"); UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"Title" message:@"程序已被杀死,点击通知栏调用" delegate:self cancelButtonTitle:@"cancel" otherButtonTitles:@"ok", nil]; [alert show]; } return YES; } 

 

iOS 10之后

先导入这个东西#import

注册通知

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.

    // 使用 UNUserNotificationCenter 来管理通知 UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter]; //监听回调事件 center.delegate = self; //iOS 10 使用以下方法注册,才能得到授权 [center requestAuthorizationWithOptions:(UNAuthorizationOptionAlert + UNAuthorizationOptionSound + UNAuthorizationOptionBadge) completionHandler:^(BOOL granted, NSError * _Nullable error) { // Enable or disable features based on authorization. }]; return YES; } 

 

发送通知

// 使用 UNUserNotificationCenter 来管理通知
    UNUserNotificationCenter* center = [UNUserNotificationCenter currentNotificationCenter];

    //需创建一个包含待通知内容的 UNMutableNotificationContent 对象,注意不是 UNNotificationContent ,此对象为不可变对象。
    UNMutableNotificationContent* content = [[UNMutableNotificationContent alloc] init];
    content.title = [NSString localizedUserNotificationStringForKey:@"本地推送Title" arguments:nil]; content.body = [NSString localizedUserNotificationStringForKey:@"本地推送Body" arguments:nil]; content.sound = [UNNotificationSound defaultSound]; // 在 设定时间 后推送本地推送 UNTimeIntervalNotificationTrigger* trigger = [UNTimeIntervalNotificationTrigger triggerWithTimeInterval:5 repeats:NO]; UNNotificationRequest* request = [UNNotificationRequest requestWithIdentifier:@"FiveSecond" content:content trigger:trigger]; //添加推送成功后的处理! [center addNotificationRequest:request withCompletionHandler:^(NSError * _Nullable error) { }];

 

通知处理

实现UNUserNotificationCenterDelegate代理方法:

  • 第一个方法:
-(void)userNotificationCenter:(UNUserNotificationCenter *)center willPresentNotification:(UNNotification *)notification withCompletionHandler:(void (^)(UNNotificationPresentationOptions))completionHandler{ // 处理完成后条用 completionHandler ,用于指示在前台显示通知的形式 completionHandler(UNNotificationPresentationOptionSound); } 

 

这个方法中的那句话就是,当应用在前台的时候,收到本地通知,是用什么方式来展现。系统给了三种形式:

typedef NS_OPTIONS(NSUInteger, UNNotificationPresentationOptions) {
    UNNotificationPresentationOptionBadge   = (1 << 0),
    UNNotificationPresentationOptionSound   = (1 << 1),
    UNNotificationPresentationOptionAlert   = (1 << 2),
} 

 

 

  • 第二个代理方法:

这个方法是在后台或者程序被杀死的时候,点击通知栏调用的,在前台的时候不会被调用

- (void)userNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(UNNotificationResponse *)response withCompletionHandler:(void(^)())completionHandler{

    UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"Title" message:@"message" delegate:self cancelButtonTitle:@"cancel" otherButtonTitles:@"ok", nil]; [alert show]; completionHandler(); }

转载于:https://www.cnblogs.com/CodingMann/p/8183578.html

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