FCM 通知从 Web api c# 到 android

Question

我正在通过 c# 开发 API，它将向特定用户(android 用户(发送通知，然后当用户打开通知时，我想将他重定向到特定活动。

所以我需要发送数据以及通知消息。我已经使用Firebase控制台对其进行了测试，它工作正常，收到通知并且我的启动器活动收到额外的数据已发送

我也从我的后端测试了它，除了我的启动器意图没有收到任何额外的通知外，收到了通知。

我已经挣扎了几个小时，任何想法都会有所帮助！

这是我来自 C# 的代码

public String getNotification ()
{
string serverKey = "xxxx";
var result = "-1";
try
{
var webAddr = "https://fcm.googleapis.com/fcm/send";
var regID = "xxxx"; 
var httpWebRequest = (HttpWebRequest)WebRequest.Create(webAddr);
httpWebRequest.ContentType = "application/json";
httpWebRequest.Headers.Add("Authorization:key=" + serverKey);
httpWebRequest.Method = "POST";

using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
{


string json = "{"to": "" + regID +
"","notification": {"title": "Testing","body": "Hi Testing"}" +
"," + ""data:"" + "{"mymsg":" + ""h" }}";

streamWriter.Write(json);
streamWriter.Flush();
}

var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
{
result = streamReader.ReadToEnd();
}
return result;
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
return "Can't Send";
}
}
}

这是我的启动器活动：

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Log.d("test" , "in main");
if (getIntent().getStringExtra("mymsg") != null) {
Log.d("test" , "has extra");
Intent intent = new Intent(this, Main2Activity.class);
startActivity(intent);
finish();
} else {
Log.d("test" , "no extra");
}

Answer 1

看起来你有错误的 JSON：," + ""data:"" + "{"mymsg":" + ""h" }}将是：

"data:" {
"mymsg":"h"
}

只需更正您的 JSON。但我建议使用 c# 类和序列化。请看这个简单的例子：

var payload = new {
to = "XXXX",
notification = new
{
body = "Test",
title = "Test"
},
data = new {
mymsg = "h"
}
}
// Using Newtonsoft.Json
string postbody = JsonConvert.SerializeObject(payload).ToString();

但它只是一个例子。您应该创建类而不是匿名对象，并使用 JsonProperty 或其他方法来序列化对象。像这样：

/// <summary>
/// Data for sending push-messages.
/// </summary>
public class PushData
{
/// <summary>
/// [IOS] Displaying message
/// </summary>
[JsonProperty("alert")]
public Alert Alert { get; set; }
/// <summary>
/// [IOS] badge value (can accept string representaion of number or "Increment")
/// </summary>
[JsonProperty("badge")]
public Int32? Badge { get; set; }
/// <summary>
/// [IOS] The name of sound to play
/// </summary>
[JsonProperty("sound")]
public String Sound { get; set; }
/// <summary>
/// [IOS>=7] Content to download in background
/// </summary>
/// <remarks>
/// Set 1 for silent mode
/// </remarks>
[JsonProperty("content-available")]
public Int32? ContentAvailable { get; set; }
/// <summary>
/// [IOS>=8] Category of interactive push with additional actions
/// </summary>
[JsonProperty("category")]
public String Category { get; set; }
/// <summary>
/// [Android] Used for collapsing some messages with same collapse_key
/// </summary>
[JsonProperty(PropertyName = "collapse_key")]
public String CollapseKey { get; set; }
/// <summary>
/// [Android] This parameter specifies how long (in seconds) the message should be kept in GCM storage if the device is offline. 
/// The maximum time to live supported is 4 weeks, and the default value is 4 weeks.
/// </summary>
/// <value>
/// Time_to_live value of 0 means messages that can't be delivered immediately will be discarded
/// </value>
[JsonProperty("time_to_live")]
public Int32 TimeToLive { get; set; }
/// <summary>
///  [Android] Uri of activity to open when push activated by user
/// </summary>
[JsonProperty("url")]
public String Url { get; set; }
/// <summary>
/// Payload for push
/// </summary>
[JsonProperty("data")]
public Payload Payload { get; set; }
}

使用消息生成器，序列化消息正文以更正 JSON 字符串。