我正在实现GCM到我的应用程序中。我已经按照developer.android.com上的GCM教程的所有步骤进行了操作。
我成功地从GCM获取了注册ID，并将此ID传递给我的应用程序服务器。因此，注册步骤已成功执行。
现在，当我的应用程序服务器向我的设备发送PUSH消息时，服务器会获得消息，例如SUCCESS=8 FAILURE=0等，即服务器成功地发送消息，但是OnMessage的调用次数取决于成功值而被调用8次。
我的设备通过组织wifi连接，没有任何代理设置。
我的问题是：为什么我接收到来自GCM的PUSH消息的次数与Success值一样多？Google为什么会传递那么多消息？原因可能是什么？
我的GCMBaseIntentService如下所示：
我成功地从GCM获取了注册ID，并将此ID传递给我的应用程序服务器。因此，注册步骤已成功执行。
现在，当我的应用程序服务器向我的设备发送PUSH消息时，服务器会获得消息，例如SUCCESS=8 FAILURE=0等，即服务器成功地发送消息，但是OnMessage的调用次数取决于成功值而被调用8次。
我的设备通过组织wifi连接，没有任何代理设置。
我的问题是：为什么我接收到来自GCM的PUSH消息的次数与Success值一样多？Google为什么会传递那么多消息？原因可能是什么？
我的GCMBaseIntentService如下所示：
public class GCMIntentService extends GCMBaseIntentService {
public GCMIntentService() {
super(GCMActivity.SENDER_ID);
}
@Override
protected void onError(Context arg0, String arg1) {
Log.d("GCM", "RECIEVED A ERROR MESSAGE");
// TODO Auto-generated method stub
}
@Override
protected void onRegistered(Context arg0, String registrationId) {
//Send the registration id to my app server to store the reg id list
GCMActivity.sendRegIdtoApplicationServer(registrationId);
}
@Override
protected void onUnregistered(Context arg0, String registrationId) {
// TODO Auto-generated method stub
}
@Override
protected void onMessage(Context context, Intent intent) {
Log.d("GCM", "RECIEVED A MESSAGE");
// Get the data from intent and send to notificaion bar
String data = intent.getStringExtra("data");
String action = intent.getAction();
if((action.equals("com.google.android.c2dm.intent.RECEIVE"))) {
try {
JSONObject jsonObject = new JSONObject(data);
boolean updateStatus = jsonObject.getBoolean("update");
if (updateStatus) {
//Showing Notification to user
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
我的活动看起来像
public class GCMActivity extends Activity {
public final static String SENDER_ID = "872355133485";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_gcm);
GCMRegistrar.checkDevice(this);
GCMRegistrar.checkManifest(this);
final String regId = GCMRegistrar.getRegistrationId(this);
if (regId.equals("")) {
GCMRegistrar.register(this, SENDER_ID);
} else {
// sendRegIdtoApplicationServer(regId);
Log.v("gh", "Already registered");
System.out.println("RegisterID:"+ regId);
}
}
And Manifest file will be
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.aspire.gcmsample"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="15" />
<permission android:name="com.aspire.gcmsample.permission.C2D_MESSAGE" android:protectionLevel="signature" />
<uses-permission android:name="com.aspire.gcmsample.permission.C2D_MESSAGE" />
<!-- App receives GCM messages. -->
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
<!-- GCM connects to Google Services. -->
<uses-permission android:name="android.permission.INTERNET" />
<!-- GCM requires a Google account. -->
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<!-- Keeps the processor from sleeping when a message is received. -->
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" android:debuggable="true">
<activity
android:name=".GCMActivity"
android:label="@string/title_activity_gcm" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name="com.google.android.gcm.GCMBroadcastReceiver"
android:permission="com.google.android.c2dm.permission.SEND" >
<intent-filter>
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
<action android:name="com.google.android.c2dm.intent.REGISTRATION" />
<category android:name="com.aspire.gcmsample" />
</intent-filter>
</receiver>
<service android:name=".GCMIntentService" />
</application>
</manifest>
这是我的服务器端代码
Properties apHeaders = new Properties();
// Use your own credentials for the below three lines
apHeaders.put("Content-Type", "application/json");
apHeaders.put("Authorization","key="+apiKey);
/*String data = "{\"registration_ids\":"+ devicesList +", \"data\":" +
"{\"data\":{\"score\" : \"1-0\", \"scorer\" : \"Ronaldo\", \"time\" : \"44\"}}}";*/
// get all registration Device ID from database
ArrayList<String> deviceId = DBRegistration.getInstance().fetchRegId();
String data = "{\"registration_ids\":"+ deviceId +", \"data\":" +
"{\"data\":{\"update\" : \"true\", " +
"\"file\": \"http://192.168.4.210:8080/FileDownload/DownloadFile?path=GCMSample.apk\"}}}";
String result = DBRegistration.getInstance().sendRequest(url, data, apHeaders);**
System.out.println("responseC"+ result);
out.println(result);
out.flush();
字符串 apServerUrl = "https://android.googleapis.com/gcm/send";
（该代码与Android GCM消息推送有关）public String sendRequest(String apServerUrl, String payload, Properties headers) {
// Setup Http URL connection
HttpURLConnection connection = null;
// Enable proxy if it needed.
Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress(PROXY_URL, PROXY_PORT));
try {
URL url = new URL(apServerUrl);
// Enable proxy if needed.
connection = (HttpURLConnection) url.openConnection(proxy);
//connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("POST");
connection.setDoOutput(true);
Object[] keys = headers.keySet().toArray();
for (int i = 0; i < keys.length; i++) {
connection.setRequestProperty((String) keys[i],
(String) headers.get(keys[i]));
}
//connection.setRequestProperty("Content-Length", ""+ payload.length());
} catch (Exception e) {
System.out.println("Failed setting up HTTP Connection\n" + e);
}
// Send the Request
String line = "";
String returnedResponse = "";
BufferedReader reader = null;
System.out.println("Request: " + payload);
try {
OutputStream os = connection.getOutputStream();
os.write(payload.toString().getBytes("UTF-8"));
os.close();
int status = connection.getResponseCode();
if (status != 200) {
System.out.println("HTTP Error code " + status
+ " received, transaction not submitted");
reader = new BufferedReader(new InputStreamReader(connection
.getErrorStream()));
} else {
reader = new BufferedReader(new InputStreamReader(connection
.getInputStream()));
}
while ((line = reader.readLine()) != null) {
returnedResponse += line;
}
} catch (Exception e) {
returnedResponse = e.getMessage();
System.out.println(e);
} finally {
try {
if (reader != null)
reader.close();
if (connection != null)
connection.disconnect();
} catch (Exception e) {
returnedResponse = e.getMessage();
System.out.println(e);
}
}
System.out.println(returnedResponse);
return returnedResponse;
}
来自GCM服务器对我的应用服务器的响应。
{"multicast_id":6552291927399218343,"success":13,"failure":0,"canonical_ids":0,"results":[{"message_id":"0:1356332586480671%79fa3a68f9fd7ecd"},{"message_id":"0:1356332586480674%79fa3a68f9fd7ecd"},{"message_id":"0:1356332586481759%79fa3a68f9fd7ecd"},{"message_id":"0:1356332586480807%79fa3a68f9fd7ecd"},{"message_id":"0:1356332586481944%79fa3a68f9fd7ecd"},{"message_id":"0:1356332586480996%79fa3a68f9fd7ecd"},{"message_id":"0:1356332586481939%79fa3a68f9fd7ecd"},{"message_id":"0:1356332586482000%79fa3a68f9fd7ecd"},{"message_id":"0:1356332586481997%79fa3a68f9fd7ecd"},{"message_id":"0:1356332586481942%79fa3a68f9fd7ecd"},{"message_id":"0:1356332586482003%79fa3a68f9fd7ecd"},{"message_id":"0:1356332586481948%79fa3a68f9fd7ecd"},{"message_id":"0:1356332586480995%79fa3a68f9fd7ecd"}]}