本地通知LocalNotification简单实用及示例
iOS推送通知
1、注意：这里说的推送通知跟NSNotification有所区别
NSNotification是抽象的，不可见的
推送通知是可见的（能用肉眼看到）
2、iOS中提供了2种推送通知
本地推送通知（Local Notification）
远程推送通知（Remote Notification）
3、推送通知的作用
让app不在前台时,告示用户App的最新情况
4、推送通知的呈现方式
在屏幕顶部一块横幅
在屏幕中间弹出UIAlertView
同时可以播放音效
锁屏时展示
App图标右上角额数字提示
5、本地推送通知(具体实现)
/**
* 注册通知
*/
+ (void)registerLocalNotification:(NSInteger)time content:(NSString *)content key:(NSString *)key;
{
//创建一个本地通知
UILocalNotification *notification = [[UILocalNotification alloc] init];
// 设置触发通知的时间
//需要使用时间戳
NSDate *fireDate = [NSDate dateWithTimeIntervalSinceNow:time];
notification.fireDate = fireDate;
// 时区
notification.timeZone = [NSTimeZone defaultTimeZone];
// 设置重复的间隔
notification.repeatInterval = 0;//0表示不重复
// 通知内容
notification.alertBody = content;
//应用程序右上角 角标
notification.applicationIconBadgeNumber = 1;
// 通知被触发时播放的声音
notification.soundName = UILocalNotificationDefaultSoundName;
// 通知参数
// NSDictionary *userDict = [NSDictionary dictionaryWithObject:content forKey:key];
notification.userInfo = userDict;
//选择使用 哪个操作组
notification.category = @"select";
//请求本地通知 授权
[self getRequestWithLocalNotificationSleep:notification];
}
- (void)getRequestWithLocalNotificationSleep:(UILocalNotification *)notification
{
// ios8后，需要添加这个注册，才能得到授权
if ([[UIApplication sharedApplication] respondsToSelector:@selector(registerUserNotificationSettings:)]) {
UIUserNotificationType type = UIUserNotificationTypeAlert | UIUserNotificationTypeBadge | UIUserNotificationTypeSound;
UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:type categories:nil];
[[UIApplication sharedApplication] registerUserNotificationSettings:settings];
}
#warning 注册完之后如果不删除，下次会继续存在，即使从模拟器卸载掉也会保留
//删除之前的通知
[[UIApplication sharedApplication]cancelAllLocalNotifications];
// 执行通知注册
[[UIApplication sharedApplication] scheduleLocalNotification:notification];
}
/**
* 取消通知
*/
+ (void)cancelLocalNotificationWithKey:(NSString *)key
{
// 获取所有本地通知数组
NSArray *localNotifications = [UIApplication sharedApplication].scheduledLocalNotifications;
if (localNotifications) {
for (UILocalNotification *notification in localNotifications) {
NSDictionary *userInfo = notification.userInfo;
if (userInfo) {
// 根据设置通知参数时指定的key来获取通知参数
NSString *info = userInfo[key];
// 如果找到需要取消的通知，则取消
if ([info isEqualToString:key]) {
if (notification) {
[[UIApplication sharedApplication] cancelLocalNotification:notification];
}
break;
}
}
}
}
}
当用户点击本地推送通知，会自动打开app，这里有2种情况
1》app并没有关闭，一直隐藏在后台，接受通知回调
- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification
2》app已经kill,则会调用AppDelegate的下面方法
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
例如：- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
//创建一个本地通知
UILocalNotification *notification = [[UILocalNotification alloc] init];
// 设置触发通知的时间
NSDate *fireDate = [NSDate dateWithTimeIntervalSinceNow:10];
notification.fireDate = fireDate;
// 时区
notification.timeZone = [NSTimeZone defaultTimeZone];
// 设置重复的间隔
notification.repeatInterval = 0;//0表示不重复
// 通知内容
notification.alertBody = @“邯郸市发生”;
// 通知被触发时播放的声音
notification.soundName = UILocalNotificationDefaultSoundName;
// 通知参数
notification.userInfo = @{@"selectIndex" : @(1)};
//删除之前的通知
[[UIApplication sharedApplication]cancelAllLocalNotifications];
// 执行通知注册
[[UIApplication sharedApplication] scheduleLocalNotification:notification];
#pragma mark - 退出程序后
// 处理退出后通知的点击，程序启动后获取通知对象，如果是首次启动还没有发送通知，那第一次通知对象为空，没必要去处理通知（如跳转到指定页面）
if (launchOptions[UIApplicationLaunchOptionsLocalNotificationKey]) {
UILocalNotification *localNotifi = launchOptions[UIApplicationLaunchOptionsLocalNotificationKey];
[self changeLocalNotifi:localNotifi];
}
return YES;
}
- (void)changeLocalNotifi:(UILocalNotification *)localNotifi{
// 如果在前台直接返回，如果此时还在前台可能会弹出两次
if ([UIApplication sharedApplication].applicationState == UIApplicationStateActive) {
return;
}
// 获取通知信息
NSString *selectIndex = localNotifi.userInfo[@"selectIndex"];
// 获取根控制器TabBarController
UITabBarController *rootController = (UITabBarController *)self.window.rootViewController;
// 跳转到指定控制器
rootController.selectedIndex = [selectIndex intValue];
}
6、ios8之后可以自定义推送按钮优化，但是在Ios10已经废除。也就是说ios8 9 会有效果
//1.创建消息上面要添加的动作(按钮的形式显示出来)
UIMutableUserNotificationAction *action = [[UIMutableUserNotificationAction alloc] init];
action.identifier = @"action";//按钮的标示
action.title=@"接收";//按钮的标题
action.activationMode = UIUserNotificationActivationModeForeground;//当点击的时候启动程序
// action.authenticationRequired = YES;
// action.destructive = YES;
UIMutableUserNotificationAction *action2 = [[UIMutableUserNotificationAction alloc] init];
action2.identifier = @"action2";
action2.title=@"拒绝";
action2.activationMode = UIUserNotificationActivationModeBackground;//当点击的时候不启动程序，在后台处理
action.authenticationRequired = YES;//需要解锁才能处理，如果action.activationMode = UIUserNotificationActivationModeForeground;则这个属性被忽略；
action.destructive = YES;
//2.创建动作(按钮)的类别集合
UIMutableUserNotificationCategory *categorys = [[UIMutableUserNotificationCategory alloc] init];
categorys.identifier = @"alert";//这组动作的唯一标示
[categorys setActions:@[action,action2] forContext:(UIUserNotificationActionContextMinimal)];
//3.创建UIUserNotificationSettings，并设置消息的显示类类型
UIUserNotificationSettings *uns = [UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeAlert|UIUserNotificationTypeBadge|UIUserNotificationTypeSound) categories:[NSSet setWithObjects:categorys, nil]];
//4.注册推送
[[UIApplication sharedApplication] registerForRemoteNotifications];
[[UIApplication sharedApplication] registerUserNotificationSettings:uns];
//5.发起本地推送消息
UILocalNotification *notification = [[UILocalNotification alloc] init];
notification.fireDate=[NSDate dateWithTimeIntervalSinceNow:10];
notification.timeZone=[NSTimeZone defaultTimeZone];
notification.alertBody=@"测试推送的快捷回复";
notification.category = @"alert";//注意此处的标识要与设置的标识显示一致
[[UIApplication sharedApplication] scheduleLocalNotification:notification];
当点击行为时，会执行以下方法：
-(void)application:(UIApplication *)application handleActionWithIdentifier:(NSString *)identifier forLocalNotification:(UILocalNotification *)notification completionHandler:(void (^)())completionHandler
7、至于ios10----------------UserNotifications后续再接上。