以iOS8.0和iOS10.0两个版本来创建一个本地推送：
- (void)localPush{
// iOS8.0下本地推送的创建方式
if ([UIDevice currentDevice].systemVersion.floatValue < 10.0) {
UILocalNotification *localNotification = [[UILocalNotification alloc] init];
localNotification.fireDate = [NSDate dateWithTimeIntervalSinceNow:5.0];
localNotification.alertBody = @"这是一条本地推送，这是推送主体！";
localNotification.soundName = UILocalNotificationDefaultSoundName;
localNotification.applicationIconBadgeNumber += 1;
[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
// iOS10.0
}else {
// 给推送一个标识符
NSString *identifier = @"localPush.identifier";
// 推送内容
UNMutableNotificationContent *content = [UNMutableNotificationContent new];
content.body = @"这是iOS10的本地推送，这是推送主体！";
content.badge = @1;
// 推送触发器
// UNTimeIntervalNotificationTrigger *trigger = [UNTimeIntervalNotificationTrigger triggerWithTimeInterval:60 repeats:YES];
NSDateComponents *components = [NSDateComponents new]; components.second = 5.0f;
UNCalendarNotificationTrigger *trigger = [UNCalendarNotificationTrigger triggerWithDateMatchingComponents:components repeats:YES];
// 推送请求
UNNotificationRequest *request = [UNNotificationRequest requestWithIdentifier:identifier content:content trigger:trigger];
// 把推送请求添加到推送中心
[[UNUserNotificationCenter currentNotificationCenter] addNotificationRequest:request withCompletionHandler:^(NSError * _Nullable error) {
NSLog(@"%@", [error localizedDescription]);
}];
}}
推送创建完毕后，那么我们便要考虑收到推送后会执行什么样的操作，这里主要介绍处理接收到推送的地方。首先我们要先注册推送通知。8.0和10.0注册推送还是很不一样的。
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// 8.0系统注册推送
if ([[UIDevice currentDevice].systemVersion floatValue] < 10.0) {
UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeBadge|UIUserNotificationTypeAlert|UIUserNotificationTypeSound categories:nil];
[application registerUserNotificationSettings:settings];
// iOS10.0注册推送
}else{
[UNUserNotificationCenter currentNotificationCenter].delegate = self;
[[UNUserNotificationCenter currentNotificationCenter] requestAuthorizationWithOptions:UNAuthorizationOptionBadge|UNAuthorizationOptionSound|UNAuthorizationOptionAlert completionHandler:^(BOOL granted, NSError * _Nullable error) {
if (error != nil) {
NSLog(@"%@", [error localizedDescription]);
}
}];
[[UNUserNotificationCenter currentNotificationCenter] getNotificationSettingsWithCompletionHandler:^(UNNotificationSettings * _Nonnull settings) {
NSLog(@"%@", settings);
}];
}
// 如果是点击推送进入的App，那么lauchOptions会有一个UIApplicationLaunchOptionsLocalNotificationKey字段，如果这个字段不为空，代表是点击推送进入，并且可以获得推送的内容。注意这个key在iOS10以后也有值，不要和userNotificationCenter:didReceiveNotificationResponse:withCompletionHandler:这个方法重复了。所以要判断一下版本是否小于10.0。
if (([[UIDevice currentDevice].systemVersion floatValue] < 10.0) && launchOptions[UIApplicationLaunchOptionsLocalNotificationKey]) {
// ......在点击推送进入App后会执行的代码。
}
return YES;
}
iOS10以后，如果程序被销毁后（即程序退出后），收到推送，点击推送进入app，会调用该方法；在该方法里可以执行需要执行的代码，注意两点：
一.要调用一下completionHandler()；
二.要在
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
中设置一下代理：
[UNUserNotificationCenter currentNotificationCenter].delegate = self;
否则该代理方法不会执行。
- (void)userNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(UNNotificationResponse *)response withCompletionHandler:(void (^)())completionHandler{
//......程序退出时收到推送执行的操作
completionHandler();
}
iOS8.0以后，如果程序在前台，收到推送会调用该方法：
- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification{
//......程序在前台时收到推送执行的操作
}
iOS10.0以后，如果程序在前台，收到推送会调用该方法：
- (void)userNotificationCenter:(UNUserNotificationCenter *)center willPresentNotification:(UNNotification *)notification withCompletionHandler:(void (^)(UNNotificationPresentationOptions))completionHandler{
//......程序在前台时收到推送执行的操作
completionHandler(UNNotificationPresentationOptionSound | UNNotificationPresentationOptionBadge | UNNotificationPresentationOptionAlert);
}
