UILocalNotification 打开特定项目的详细视图控制器

Question

我想为特定项目设置警报并让 UILocalNotification 从我的 table 视图控制器打开特定项目并显示其详细信息。换句话说，当出现通知时，我希望能够点击 "Show item" 而不是显示所有项目的列表，我只想查看该特定项目的详细信息。

为此，我需要存储有关特定项目（标题、索引等）的信息。我该怎么做？将我的项目的标题存储在 UILocalNotification.userInfo?

中

Answer 1

是的，你可以做到。本地通知的 userInfo 属性用于将您需要的任何信息传递给您的通知处理程序。

如果您希望向用户显示一个按钮，您将需要向本地通知添加操作，并且您还必须处理当您的应用程序在前台时触发通知的情况，不向用户显示通知。

Answer 2

添加信息

Objective c

localNotification.userInfo =@{@"title":title,@"index":index};

Swift

var userInfo = [String:String]()
userInfo["title"] = title
userInfo["index"] = index
notification.userInfo = userInfo

通知到达时获取信息

Objective C

- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification
{
    NSLog(@“title = %@”,notification.userInfo[@"title"]);
    NSLog(@“index = %@”,notification.userInfo[@"index"]);
}

Swift

func application(application: UIApplication!, didReceiveLocalNotification notification: UILocalNotification!) {
    println(notification.userInfo?["title"])
    println(notification.userInfo?["index"])
}

********编辑********

将 "title" 和 "index" 从通知的 userInfo 传递到 Table View Controller

Objective C

- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification
{
    [[NSNotificationCenter defaultCenter] postNotificationName:@"BookNotification" object:notification.userInfo]
    // or update table view data source
}

Swift

func application(application: UIApplication!, didReceiveLocalNotification notification: UILocalNotification!) {
    NSNotificationCenter.defaultCenter().postNotificationName("BookNotification", object:notification.userInfo)
    // or update table view data source
}

In Table View Controller 在通知到达时添加观察者获取 "title" 和 "index" 然后更新 Table View Controller datasource 并重新加载 tableview

里面Table View Controller Objective C

[[NSNotificationCenter defaultCenter] addObserver:self
    selector:@selector(receiveBookNotification:) 
    name:@"BookNotification"
    object:nil];


- (void) receiveTestNotification:(NSNotification *) notification
{ 
    NSString *title = notification.userInfo[@"title"];
    NSString *title = notification.userInfo[@"index"];
    // Update data source and reload
}

Swift

NSNotificationCenter.defaultCenter().addObserver(self, selector: "receiveBookNotification:", name:"BookNotification", object: nil)


func receiveTestNotification(notification: NSNotification) {
    let title = notification.userInfo?["title"]
    let index = notification.userInfo?["index"]
    // Update data source and reload
}

UILocalNotification 打开特定项目的详细视图控制器

UILocalNotification to open detail view controller for a specific item

ios

swift

uilocalnotification