我正在尝试为我的应用程序实现推送通知。首先，我使用了旧的/已弃用的 DemoAcitivity 示例，并且我成功地从服务器接收到我的应用程序的消息。
由于它已被弃用，我尝试使用新的 GCM API 以实现相同的 Push Notif。服务。在这个实现过程中，我主要使用了这里提供的代码；
http://developer.android.com/google/gcm/gs.html
在我的代码中，每次尝试将设备注册到 GCM 时，都会收到 SERVICE_NOT AVAILABLE 错误。我用来注册的方法正是文档中的 smae（上面链接）；
私人无效注册背景（）{
new AsyncTask<Void, Object, String>() {
@Override
protected String doInBackground(Void... objects) {
String msg = "";
try {
if (gcm == null) {
gcm = GoogleCloudMessaging.getInstance(context);
}
regid = gcm.register(GenericUtilities.SENDER_ID);
msg = "Device registered, registration id=" + regid;
// You should send the registration ID to your server over HTTP,
// so it can use GCM/HTTP or CCS to send messages to your app.
// For this demo: we don't need to send it because the device
// will send upstream messages to a server that echo back the message
// using the 'from' address in the message.
// Save the regid - no need to register again.
setRegistrationId(context, regid);
} catch (IOException ex) {
msg = "Error :" + ex.getMessage();
}
return msg;
}
@Override
protected void onPostExecute(String msg) {
mDisplay.append((String)msg.toString() + "\n");
}
}.execute(null, null, null);
}
这就是清单。
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.pushnotificationexample"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<!-- 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" />
<!--
Creates a custom permission so only this app can receive its messages.
NOTE: the permission *must* be called PACKAGE.permission.C2D_MESSAGE,
where PACKAGE is the application's package name.
-->
<permission
android:name="com.example.pushnotificationexample.permission.C2D_MESSAGE"
android:protectionLevel="signature" />
<uses-permission
android:name="com.example.pushnotificationexample.permission.C2D_MESSAGE" />
<!-- This app has permission to register and receive data message. -->
<uses-permission
android:name="com.google.android.c2dm.permission.RECEIVE" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.pushnotificationexample.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver
android:name="com.example.pushnotificationexample.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.example.pushnotificationexample" />
</intent-filter>
</receiver>
<service android:name=".GCMIntentService" />
</application>
</manifest>
有任何想法吗？