Question

我正在开发一个Phonegap应用程序。为了实现推送通知，我使用了iOS插件（来自github的AppDelegate + Notification＆amp; PushNotification文件），并且成功地能够在APN上注册设备并能够使用我的MAC机器终端发送推送通知（使用.php文件）。 / p>

当我的应用程序处于活动模式时，我能够在“didReceiveRemoteNotification”块中接收通知。当我点击通知中心的任何通知时，也会执行此方法。

我面临的问题是：

当我的应用程序从通知点击激活（处于后台状态）时，如何从“didReceiveRemoteNotification”获取Notification.js函数调用？

因为应用程序可以调用该函数：

1. AppDelegate+Notification.m

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo {
      NSLog(@"didReceiveRemoteNotification AppDelegate+Notification.h :%@", userInfo);

      PushNotification* pushHandler = [self.viewController getCommandInstance:@"PushNotification"];
      NSMutableDictionary* mutableUserInfo = [userInfo mutableCopy];

      // Get application state for iOS4.x+ devices, otherwise assume active
      UIApplicationState appState = UIApplicationStateActive;
     if([application respondsToSelector:@selector(applicationState)]) {
       appState = application.applicationState;
     }

     if(appState == UIApplicationStateActive) //Active state
     {
       NSLog(@"UIApplicationStateActive");
       [mutableUserInfo setValue:@"1" forKey:@"applicationStateActive"];
       [pushHandler didReceiveRemoteNotification:mutableUserInfo];
     }
    else // BG state
    {
       NSLog(@"UIApplicationStateBackground");
       [mutableUserInfo setValue:@"0" forKey:@"applicationStateActive"];
       [mutableUserInfo setValue:[NSNumber numberWithDouble: [[NSDate date] timeIntervalSince1970]] forKey:@"timestamp"];
      [pushHandler.pendingNotifications addObject:mutableUserInfo];
  }
[[UIApplication sharedApplication] cancelAllLocalNotifications];
[UIApplication sharedApplication].applicationIconBadgeNumber = 0;
}

2. PushNotification.m

- (void)didReceiveRemoteNotification:(NSDictionary*)userInfo {
      NSLog(@"didReceiveRemoteNotification : %@", userInfo);

     // Converting Dict to NSString in JSON format using NSJSONSerialization as per Cordova 2.4.0
    NSError* error = nil;
    NSString *jsStatement = nil;
   NSData* jsonData = [NSJSONSerialization dataWithJSONObject:userInfo options:0 error: &error];
   if (error != nil)
   {
       jsStatement = [NSString stringWithFormat:@"window.plugins.pushNotification.notificationCallback({error: %@});",[error localizedDescription]];
  }
  else
  {
       jsStatement = [NSString stringWithFormat:@"window.plugins.pushNotification.notificationCallback(%@);", [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding]];

  }

  [self writeJavascript:jsStatement];
}

3. PushNotification.js

PushNotification.prototype.notificationCallback = function(notification) {
     alert ('JS notificationCallback');
}

当它处于活动状态并且通知到来时。最后一步的警报被解雇（JS notificationCallback）

或者以简单的方式，如何从我的ios插件中调用java脚本函数？

Answer 1

我认为您使用此插件：https://github.com/mgcrea/cordova-push-notification（如果这不正确，请向我们提供指向正确插件的链接）

如果上面引用的插件是正确的，我想你错过了更新AppDelegate.m的步骤：

为了支持启动通知（应用程序从远程通知开始），您必须在 - （BOOL）应用程序中添加以下块：（UIApplication *）应用程序didFinishLaunchingWithOptions：（NSDictionary *）launchOptions，就在返回YES之前;

[self.window addSubview:self.viewController.view];
[self.window makeKeyAndVisible];

/* START BLOCK */

// PushNotification - Handle launch from a push notification
NSDictionary* userInfo = [launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey];
if(userInfo) {
    PushNotification *pushHandler = [self.viewController getCommandInstance:@"PushNotification"];
    NSMutableDictionary* mutableUserInfo = [userInfo mutableCopy];
    [mutableUserInfo setValue:@"1" forKey:@"applicationLaunchNotification"];
    [mutableUserInfo setValue:@"0" forKey:@"applicationStateActive"];
    [pushHandler.pendingNotifications addObject:mutableUserInfo];
}

/* STOP BLOCK */

return YES;

我似乎记得，去年，我对Urban Airship版插件的文档有问题...我不记得是否只需要添加前两行，或者整个块是否是假设要加入。

无论如何，我认为问题在于AppDelegate.m中的didFinishLaunchingWithOptions方法。

Answer 2

我认为你要找的是[webView stringByEvaluatingJavaScriptFromString]。

你可以像这样调用你的javascript回调：

NSString *jsCallback = [NSString stringWithFormat:@"%@(%@);", @"window.plugins.pushNotification.notificationCallback", @"your notification message"];
[self.webView stringByEvaluatingJavaScriptFromString:jsCallback];

如何从iOS push插件调用JavaScript函数？

2 个答案: