iOS的本地通知服务需要使用NSLocalNotification,处理基于时间行为的通知。比如定时通知用户该学习了。
使用NSLocalNotification一般需要考虑三个方面:
scheduled time：时间周期，用来指定iOS系统发送通知的日期和时间；
notification type:通知类型(包括警告信息,动作按钮的标题,应用图标上的badge（数字标记）和播放的声音)；
自定义数据，本地通知可以包含一个dictionary类型的本地数据。
对本地通知的数量限制，iOS最多允许最近本地通知数量是64个，超过限制的本地通知将被iOS忽略。
使用示例:
//发送
UILocalNotification *notification=[[UILocalNotification alloc] init];
if (notification!=nil) {
NSDate *now=[NSDate new];
notification.fireDate=[now dateByAddingTimeInterval:10];//10秒后通知
notification.repeatInterval=0;//循环次数，kCFCalendarUnitWeekday一周一次
notification.timeZone=[NSTimeZone defaultTimeZone];
notification.applicationIconBadgeNumber=1; //应用的红色数字
notification.soundName= UILocalNotificationDefaultSoundName;//声音，可以换成alarm.soundName = @"myMusic.caf"
//去掉下面2行就不会弹出提示框
notification.alertBody=@"通知内容";//提示信息 弹出提示框
notification.alertAction = @"打开"; //提示框按钮
//notification.hasAction = NO; //是否显示额外的按钮，为no时alertAction消失
// NSDictionary *infoDict = [NSDictionary dictionaryWithObject:@"someValue" forKey:@"someKey"];
//notification.userInfo = infoDict; //添加额外的信息
[[UIApplication sharedApplication] scheduleLocalNotification:notification];
}
//取消
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
application.applicationIconBadgeNumber = 0;
// Add the view controller's view to the window and display.
[window addSubview:viewController.view];
[window makeKeyAndVisible];
return YES;
}
- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification {
//点击提示框的打开
application.applicationIconBadgeNumber = 0;
}
- (void)applicationDidBecomeActive:(UIApplication *)application {
//当程序还在后天运行
application.applicationIconBadgeNumber = 0;
}
//other
NSDate *date = [NSDate dateWithTimeIntervalSinceNow:20];
//chuagjian一个本地推送
UILocalNotification *noti = [[[UILocalNotification alloc] init] autorelease];
if (noti) {
//设置推送时间
noti.fireDate = date;
//设置时区
noti.timeZone = [NSTimeZone defaultTimeZone];
//设置重复间隔
noti.repeatInterval = NSWeekCalendarUnit;
//推送声音
noti.soundName = UILocalNotificationDefaultSoundName;
//内容
noti.alertBody = @"推送内容";
//显示在icon上的红色圈中的数子
noti.applicationIconBadgeNumber = 1;
//设置userinfo 方便在之后需要撤销的时候使用
NSDictionary *infoDic = [NSDictionary dictionaryWithObject:@"name" forKey:@"key"];
noti.userInfo = infoDic;
//添加推送到uiapplication
UIApplication *app = [UIApplication sharedApplication];
[app scheduleLocalNotification:noti];
}
2、程序运行时接收到本地推送消息
- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification*)notification
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"接收到本地提醒 in app"
message:notification.alertBody
delegate:nil
cancelButtonTitle:@"确定"
otherButtonTitles:nil];
[alert show];
//这里，你就可以通过notification的useinfo，干一些你想做的事情了
application.applicationIconBadgeNumber -= 1;
}
3、取消一个本地推送
UIApplication *app = [UIApplication sharedApplication];
//获取本地推送数组
NSArray *localArr = [app scheduledLocalNotifications];
//声明本地通知对象
UILocalNotification *localNoti;
if (localArr) {
for (UILocalNotification *noti in localArr) {
NSDictionary *dict = noti.userInfo;
if (dict) {
NSString *inKey = [dict objectForKey:@"key"];
if ([inKey isEqualToString:key]) {
if (localNoti){
[localNoti release];
localNoti = nil;
}
localNoti = [noti retain];
break;
}
}
}
//判断是否找到已经存在的相同key的推送
if (!localNoti) {
//不存在 初始化
localNoti = [[UILocalNotification alloc] init];
}
if (localNoti && !state) {
//不推送 取消推送
[app cancelLocalNotification:localNoti];
[localNoti release];
return;
}
}