本地推送将会在状态栏里、锁屏界面等出现通知。现在以在状态栏里的通知为例。

 1 -(void)alertLoaclNotification{
 2     //初始化一个 UILocalNotification
 3     UILocalNotification * notification = [[UILocalNotification alloc] init];
 4     if (notification!=nil) {
 5         // 设置通知的提醒时间
 6         NSDate *currentDate   = [NSDate date];
 7         notification.timeZone = [NSTimeZone defaultTimeZone]; // 使用本地时区
 8         notification.fireDate = [currentDate dateByAddingTimeInterval:2.0];
 9             
10         // 设置重复间隔
11         notification.repeatInterval = kCFCalendarUnitDay;
12 
13         // 设置提醒的文字内容
14         notification.alertBody = @"该吃饭了";
15             
16         // 通知提示音 使用默认的
17         notification.soundName= UILocalNotificationDefaultSoundName;
18             
19         // 设置应用程序右上角的红色提醒个数
20         notification.applicationIconBadgeNumber++;
21             
22         // 设定通知的userInfo,用来标识该通知
23         NSDictionary * inforDic = [NSDictionary dictionaryWithObject:@"name" forKey:@"key"];
24         notification.userInfo =inforDic;
25             
26         // 将通知添加到系统中
27         [[UIApplication sharedApplication] scheduleLocalNotification:notification];
28     }
29 }

取消本地通知时,则可以用

1 //拿到所有推送的数组
2 NSArray * array = [[UIApplication sharedApplication] scheduledLocalNotifications];
3 //便利这个数组 根据 key 拿到我们想要的 UILocalNotification
4 for (UILocalNotification * loc in array) {
5     if ([[loc.userInfo objectForKey:@"key"] isEqualToString:@"name"]) {
6         //取消 本地推送
7         [[UIApplication sharedApplication] cancelLocalNotification:loc];
8     }
9 }

在程序运行时,推送可能不出现,会提示

Attempting to badge the application icon but haven't received permission……

这出现在IOS8上,是没有权限的原因。若换成IOS7或以前的,则没这些问题。现在在IOS8中要实现badge、alert和sound等都需要用户同意才能,因为这些都算做Notification“通知”,为了防止有些应用动不动给用户发送“通知”骚扰用户,所以在iOS8时,这些“通知”必须要用户同意才行。
要在IOS8解决这些问题,就要弹出一个提示框,询问用户是否允许推送通知。具体就是在AppDelegate中的

didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
方法中添加系统判断

 1 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
 2 {
 3     //判断系统版本
 4     CGFloat sysVersion=[[UIDevice currentDevice]systemVersion].floatValue;
 5     if (sysVersion>=8.0) {
 6         UIUserNotificationType type = UIUserNotificationTypeBadge | UIUserNotificationTypeAlert | UIUserNotificationTypeSound;
 7         UIUserNotificationSettings *setting = [UIUserNotificationSettings settingsForTypes:type categories:nil];
 8         [[UIApplication sharedApplication] registerUserNotificationSettings:setting];
 9     }
10     return YES;
11 }

 

posted on 2015-08-12 17:47  lixin327  阅读(231)  评论(0编辑  收藏  举报