本地推送通知

對(duì)本地通知的數(shù)量限制，iOS最多允許最近本地通知數(shù)量是64個(gè)，超過限制的本地通知將被iOS忽略。

app沒有徹底關(guān)閉時(shí)

• app在前臺(tái)時(shí)(包括待激活狀態(tài))：可以接收通知，但不顯示
• app在后臺(tái)：可以接收，并顯示通知

app徹底關(guān)閉時(shí)

• 點(diǎn)擊程序圖標(biāo)：進(jìn)入app主界面
• 點(diǎn)擊通知：進(jìn)入詳情頁(yè)面

• 不需要聯(lián)網(wǎng)就能發(fā)出的推送通知(不需要服務(wù)器的支持)
• 常用來定時(shí)提醒用戶完成一些任務(wù)，即使程序被殺死提示照樣有，例如：記事本、備忘錄等

1 獲取通知授權(quán)

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

    UIUserNotificationSettings *userSettings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert|UIUserNotificationTypeBadge|UIUserNotificationTypeSound categories:nil];
    [application registerUserNotificationSettings:userSettings];
    
    return YES;
}

2 創(chuàng)建通知對(duì)象(在需要的方法函數(shù)中寫入)

    //1.通知對(duì)象
    UILocalNotification *localNotification = [[UILocalNotification alloc]init];
    //2.通知的時(shí)間
    localNotification.fireDate = [NSDate dateWithTimeIntervalSinceNow:5];
    //3.通知的內(nèi)容
    localNotification.alertBody = @"HELLO IS ME";
    //4.設(shè)置通知的時(shí)候的附加信息(非必須)
    localNotification.userInfo = @{@"type":@"1",@"hello":@"word"};
    //5.調(diào)度本地通知
    [[UIApplication sharedApplication] scheduleLocalNotification:localNotification];

監(jiān)聽本地推送通知

1 app沒有徹底關(guān)閉時(shí)

//收到本地通知
-(void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification{
    if (application.applicationState == UIApplicationStateInactive){
        NSLog(@"我是待激活狀態(tài)來的");
        if ([notification.userInfo[@"type"] isEqualToString:@"1"]) {
            NSLog(@"做自己的事");//type是我的userinfo的里面的信息
        }
    }else if (application.applicationState == UIApplicationStateBackground){
        //注:此處不會(huì)進(jìn)來!!!,僅此狀態(tài)下可以顯示頂部通知提示,點(diǎn)通知會(huì)進(jìn)到UIApplicationStateInactive方法(程序不掛的情況下)
        NSLog(@"我是后臺(tái)來的");
        
    }else{//UIApplicationStateActive
        NSLog(@"我是前臺(tái)來的");
    }
}

• UIApplicationStateActive應(yīng)用在前臺(tái)運(yùn)行時(shí)就是這個(gè)狀態(tài)
• UIApplicationStateInactive待激活狀態(tài):下拉通知欄 、鎖屏、雙擊Home鍵、上拉任務(wù)欄等
• UIApplicationStateBackground后臺(tái)狀態(tài):按Home鍵 、其他應(yīng)用程序把應(yīng)用擠入后臺(tái)

2 app徹底關(guān)閉時(shí)

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    
    UIUserNotificationSettings *userSettings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert|UIUserNotificationTypeBadge|UIUserNotificationTypeSound categories:nil];
    [application registerUserNotificationSettings:userSettings];
    
    if(launchOptions){
        UILocalNotification *localNote = launchOptions[UIApplicationLaunchOptionsLocalNotificationKey];
        if ([localNote.userInfo[@"type"] isEqualToString:@"1"] ) {
            
            NSLog(@"程序掛了之后點(diǎn)擊通知欄進(jìn)來的");
            
        }
    }
    return YES;
}

說明

 當(dāng)應(yīng)用程序啟動(dòng)時(shí)執(zhí)行，應(yīng)用程序啟動(dòng)入口。只在應(yīng)用程序啟動(dòng)時(shí)執(zhí)行一次。

 @param application 用來獲取應(yīng)用程序的狀態(tài)、變量等
 @param launchOptions 該參數(shù)存儲(chǔ)程序啟動(dòng)的原因
        1 若用戶直接啟動(dòng)，lauchOptions內(nèi)無數(shù)據(jù)
        2 若由其他應(yīng)用程序通過openURL:啟動(dòng) 則UIApplicationLaunchOptionsURLKey對(duì)應(yīng)的對(duì)象為啟動(dòng)URL（NSURL）,UIApplicationLaunchOptionsSourceApplicationKey對(duì)應(yīng)啟動(dòng)的源應(yīng)用程序的bundle ID (NSString)
        3 若由本地通知啟動(dòng)，則UIApplicationLaunchOptionsLocalNotificationKey對(duì)應(yīng)的是為啟動(dòng)應(yīng)用程序的的本地通知對(duì)象(UILocalNotification)
        4 若由遠(yuǎn)程通知啟動(dòng)，則UIApplicationLaunchOptionsRemoteNotificationKey對(duì)應(yīng)的是啟動(dòng)應(yīng)用程序的的遠(yuǎn)程通知信息userInfo（NSDictionary
        5 其他key還有UIApplicationLaunchOptionsAnnotationKey,UIApplicationLaunchOptionsLocationKey,UIApplicationLaunchOptionsNewsstandDownloadsKey。 如果要在啟動(dòng)時(shí)，做出一些區(qū)分，那就需要在下面的代碼做處理。 比如：應(yīng)用可以被某個(gè)其它應(yīng)用調(diào)起（作為該應(yīng)用的子應(yīng)用），要實(shí)現(xiàn)單點(diǎn)登錄，那就需要在啟動(dòng)代碼的地方做出合理的驗(yàn)證，并跳過登錄。
 @return return value description

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{
    NSURL *url = [launchOptions objectForKey:UIApplicationLaunchOptionsURLKey];
    if(url) {
    }
    NSString *bundleId = [launchOptions objectForKey:UIApplicationLaunchOptionsSourceApplicationKey];
    if(bundleId) {
    }
    UILocalNotification * localNotify = [launchOptions objectForKey:UIApplicationLaunchOptionsLocalNotificationKey];
    if(localNotify) {
    }
    NSDictionary *userInfo = [launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey];
    if(userInfo)  {
    }
    
    return YES;
}

取消本地通知

//取消某一個(gè)通知
NSArray *notificaitons = [[UIApplication sharedApplication] scheduledLocalNotifications];
//獲取當(dāng)前所有的本地通知
if (!notificaitons || notificaitons.count <= 0) {
    return;
}
for (UILocalNotification *notify in notificaitons) {
    if ([[notify.userInfo objectForKey:@"type"] isEqualToString:@"1"]) {
        //取消一個(gè)特定的通知
        [[UIApplication sharedApplication] cancelLocalNotification:notify];
        break;
    }
}

//取消所有的本地通知
[[UIApplication sharedApplication] cancelAllLocalNotifications];

留下的問題:程序后臺(tái)運(yùn)行或者掛掉的情況下,不點(diǎn)擊通知如何拿到數(shù)據(jù)?是不是就丟了該通知數(shù)據(jù)...