GCM推送通知到iOS与content_available（不工作从非激活状态调用） [英] GCM push notification to iOS with content_available (not working to invoke from inactive state)
问题描述
我正在研究基于Java REST的Web服务，我正尝试通过Google Cloud Messaging将消息从Java API发送到iOS设备。为了学习的目的，我使用了iOS的谷歌示例代码，并且我可以在应用程序处于前台时发送消息，但当应用程序处于后台时它不工作。我已经尝试了一些负责从后台调用应用程序的content_available标志的变体。当应用程序处于前景时它工作得很好。我尝试在应用程序处于后台时显示通知。
HttpClient client = new DefaultHttpClient（）;
HttpPost post = null;
尝试{
post = new HttpPost（https://android.googleapis.com/gcm/send）;
} catch（URISyntaxException e）{
// TODO自动生成的catch块
e.printStackTrace（）;
}
字符串regisID =My_iOS_Registration_Id-GVnH1gEsJ;
列表< NameValuePair> nameValuePairs = new ArrayList< NameValuePair>（1）;
列表< NameValuePair> notificationData = new ArrayList< NameValuePair>（1）;
notificationData.add（new BasicNameValuePair（title，title））;
JSONObject obj = new JSONObject（）;
obj.put（title，title）;
obj.put（alert，title）;
obj.put（sound，default）;
obj.put（badge，1）;
nameValuePairs.add（new BasicNameValuePair（to，regisID））;
nameValuePairs.add（new BasicNameValuePair（notification，obj.toString（）））;
nameValuePairs.add（new BasicNameValuePair（content_available，true））;
post.setHeader（Authorization，
key = MyKey）;
尝试{
HttpEntity entity = new UrlEncodedFormEntity（nameValuePairs）;
} catch（UnsupportedEncodingException e1）{
// TODO自动生成的catch块
e1.printStackTrace（）;
}
尝试{
post.setEntity（new UrlEncodedFormEntity（nameValuePairs））;
} catch（UnsupportedEncodingException e）{
// TODO自动生成的catch块
e.printStackTrace（）;
}
HttpResponse response = null;
尝试{
response = client.execute（post）;
} catch（HttpException e）{
// TODO自动生成的catch块
e.printStackTrace（）;
} catch（IOException e）{
// TODO自动生成的catch块
e.printStackTrace（）;
}
HttpEntity entity1 = response.getEntity（）;
尝试{
System.out.println（Hi response is：+ EntityUtils.toString（entity1））;
} catch（ParseException e）{
// TODO自动生成的catch块
e.printStackTrace（）;
} catch（IOException e）{
// TODO自动生成的catch块
e.printStackTrace（）;
}
return response.getStatusLine（）。toString（）;
这里是我的iOS应用程序委托代码，用于接收基本上是谷歌示例代码的通知，显示通知
// [START ack_message_reception]
- （void）application：（UIApplication *）application
didReceiveRemoteNotification：（NSDictionary *）userInfo {
NSLog（@foregraound one received notification：％@，userInfo）;
//这只在应用程序启动GCM服务时有效
[[GCMService sharedInstance] appDidReceiveMessage：userInfo];
//处理收到的消息
// [START_EXCLUDE]
[[NSNotificationCenter defaultCenter] postNotificationName：_messageKey
object：nil
userInfo：userInfo];
// [END_EXCLUDE]
UILocalNotification * notification = [[UILocalNotification alloc] init];
notification.repeatInterval = NSDayCalendarUnit;
[通知setAlertBody：@Hello world];
[notification setFireDate：[NSDate dateWithTimeIntervalSinceNow：1]];
[notification setTimeZone：[NSTimeZone defaultTimeZone]];
[application setScheduledLocalNotifications：[NSArray arrayWithObject：notification]]; （void）（void（^）（UIBackgroundFetchResult））
$ b - （void）application：（UIApplication *）application
didReceiveRemoteNotification：（NSDictionary *）userInfo
fetchCompletionHandler：处理程序{
NSLog（@backgroun one Notification received：％@，userInfo）;
//这只在应用程序启动GCM服务时有效
[[GCMService sharedInstance] appDidReceiveMessage：userInfo];
//处理收到的消息
//调用完成处理程序，传递相应的UIBackgroundFetchResult值
// [START_EXCLUDE]
[[NSNotificationCenter defaultCenter] postNotificationName：_messageKey
object：nil
userInfo：userInfo];
处理程序（UIBackgroundFetchResultNoData）;
// [END_EXCLUDE]
UILocalNotification * notification = [[UILocalNotification alloc] init];
notification.repeatInterval = NSDayCalendarUnit;
[通知setAlertBody：@Hello world];
[notification setFireDate：[NSDate dateWithTimeIntervalSinceNow：1]];
[notification setTimeZone：[NSTimeZone defaultTimeZone]];
[application setScheduledLocalNotifications：[NSArray arrayWithObject：notification]];
$ b我已经尝试将通知中的数据作为JSON字符串发送， content_available，content-available和值变化为'1'， true ， TRUE 。这似乎不反映我的变化。我曾尝试将声音发送为默认，正如我在某些应该影响的问题中发现的那样。我也为Android实现了这一点，它就像一个魅力。基本上，根据我的知识，我通过gcm文档和APNS文档获得了它应该调用第二种方法，由内容可用决定，但它不适合我。
这里是一个链接到谷歌文档与content_available。
https://developers.google.com/cloud-messaging/server-ref#downstream
要查看'content_available'的部分内容，请通过页面搜索以获取有关信息。
解决方案我通过引用文档彻底解决了问题，我的新工作java代码看起来像这样。
$ b JSONObject subobj = new JSONObject（） ;
subobj.put（sound，default）;
subobj.put（badge，12）;
subobj.put（title，default）;
JSONObject obj = new JSONObject（）;
obj.put（to，regisID）;
obj.put（notification，subobj）;
obj.put（content_available，new Boolean（true））;
post.setHeader（Authorization，
key = MyKey）;
post.setHeader（Content-Type，
application / json）;
尝试{
HttpEntity entity = new UrlEncodedFormEntity（nameValuePairs）;
} catch（UnsupportedEncodingException e1）{
// TODO自动生成的catch块
e1.printStackTrace（）;
}
I am working on Java REST based web service in which I am trying to send messages from a Java API to an iOS device through Google Cloud Messaging. For learning purposes I have used google sample code for iOS and I am able to send messages when the app is in the foreground but it is not working when the app is in the background. I have tried several variations of the "content_available" flag that is responsible for invoking the app from the background. It is working nicely when the app is in foreground. I am trying to show notifications when the app is in the background.
HttpClient client = new DefaultHttpClient();
HttpPost post = null;
try {
post = new HttpPost("https://android.googleapis.com/gcm/send");
} catch (URISyntaxException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
String regisID="My_iOS_Registration_Id-GVnH1gEsJ";
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(1);
List<NameValuePair> notificationData = new ArrayList<NameValuePair>(1);
notificationData.add(new BasicNameValuePair("title", "title"));
JSONObject obj=new JSONObject();
obj.put("title", "title");
obj.put("alert", "title");
obj.put("sound", "default");
obj.put("badge", "1");
nameValuePairs.add(new BasicNameValuePair("to", regisID));
nameValuePairs.add(new BasicNameValuePair("notification", obj.toString()));
nameValuePairs.add(new BasicNameValuePair("content_available", "true"));
post.setHeader("Authorization",
"key=MyKey");
try {
HttpEntity entity = new UrlEncodedFormEntity(nameValuePairs);
} catch (UnsupportedEncodingException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
try {
post.setEntity(new UrlEncodedFormEntity(nameValuePairs));
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
HttpResponse response = null;
try {
response = client.execute(post);
} catch (HttpException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
HttpEntity entity1 = response.getEntity();
try {
System.out.println("Hi response is : " + EntityUtils.toString(entity1));
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return response.getStatusLine().toString();
Here is my iOS app delegate code for receiving notifications that is basically the google sample code with added code for showing notifications
// [START ack_message_reception]
- (void)application:(UIApplication *)application
didReceiveRemoteNotification:(NSDictionary *)userInfo {
NSLog(@" foregraound one Notification received: %@", userInfo);
// This works only if the app started the GCM service
[[GCMService sharedInstance] appDidReceiveMessage:userInfo];
// Handle the received message
// [START_EXCLUDE]
[[NSNotificationCenter defaultCenter] postNotificationName:_messageKey
object:nil
userInfo:userInfo];
// [END_EXCLUDE]
UILocalNotification *notification = [[UILocalNotification alloc]init];
notification.repeatInterval = NSDayCalendarUnit;
[notification setAlertBody:@"Hello world"];
[notification setFireDate:[NSDate dateWithTimeIntervalSinceNow:1]];
[notification setTimeZone:[NSTimeZone defaultTimeZone]];
[application setScheduledLocalNotifications:[NSArray arrayWithObject:notification]];
}
- (void)application:(UIApplication *)application
didReceiveRemoteNotification:(NSDictionary *)userInfo
fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))handler {
NSLog(@" backgroun one Notification received: %@", userInfo);
// This works only if the app started the GCM service
[[GCMService sharedInstance] appDidReceiveMessage:userInfo];
// Handle the received message
// Invoke the completion handler passing the appropriate UIBackgroundFetchResult value
// [START_EXCLUDE]
[[NSNotificationCenter defaultCenter] postNotificationName:_messageKey
object:nil
userInfo:userInfo];
handler(UIBackgroundFetchResultNoData);
// [END_EXCLUDE]
UILocalNotification *notification = [[UILocalNotification alloc]init];
notification.repeatInterval = NSDayCalendarUnit;
[notification setAlertBody:@"Hello world"];
[notification setFireDate:[NSDate dateWithTimeIntervalSinceNow:1]];
[notification setTimeZone:[NSTimeZone defaultTimeZone]];
[application setScheduledLocalNotifications:[NSArray arrayWithObject:notification]];
}
I have tried sending data in the notification as a JSON string with various variations of "content_available", "content-available" and value variations to be '1', true, TRUE. It seems to be not reflecting to my changes. I have tried sending 'sound' as 'default' as I found in some questions that it should affect. I have implemented this for android also and it is working like a charm. Basically, according to my knowledge I have gained through gcm documentation and APNS documentation it should invoke a second method decided by "content-available" but it's not working for me.
Here is a link to google documentation with content_available.
https://developers.google.com/cloud-messaging/server-ref#downstream
https://developers.google.com/cloud-messaging/server#payload
To see part of 'content_available' please search through page to get information about it.
解决方案 I solved the problem by referring to documents thoroughly my new working java code looks like this.
JSONObject subobj = new JSONObject();
subobj.put("sound", "default");
subobj.put("badge", "12");
subobj.put("title", "default");
JSONObject obj = new JSONObject();
obj.put("to", regisID);
obj.put("notification", subobj);
obj.put("content_available", new Boolean(true));
post.setHeader("Authorization",
"key=MyKey");
post.setHeader("Content-Type",
"application/json");
try {
HttpEntity entity = new UrlEncodedFormEntity(nameValuePairs);
} catch (UnsupportedEncodingException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
这篇关于GCM推送通知到iOS与content_available（不工作从非激活状态调用）的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
