去年，当您将一个Cloud Endpoints plus GCM模块添加到Android Studio项目时，IDE在backend和app中创建了一些示例代码，展示了如何将GCM与Cloud Endpoints结合使用
但是，对于较新版本的Android Studio，您只能为您添加backend部分。所以我回到了我的旧项目中，挖出了一些方便的app代码，这些代码已注册，并在Android中发送了GCM推送通知。
以下是代码的样子：
GcmBroadcastReceiver.java
public class GcmBroadcastReceiver extends WakefulBroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
// Explicitly specify that GcmIntentService will handle the intent.
ComponentName comp = new ComponentName(context.getPackageName(),
GcmIntentService.class.getName());
// Start the service, keeping the device awake while it is launching.
startWakefulService(context, (intent.setComponent(comp)));
setResultCode(Activity.RESULT_OK);
}
}
GcmIntentService.java
public class GcmIntentService extends IntentService {
android.support.v4.app.NotificationCompat.Builder notification;
public GcmIntentService() {
super("GcmIntentService");
}
@Override
protected void onHandleIntent(Intent intent) {
Bundle extras = intent.getExtras();
GoogleCloudMessaging gcm = GoogleCloudMessaging.getInstance(this);
// The getMessageType() intent parameter must be the intent you received
// in your BroadcastReceiver.
String messageType = gcm.getMessageType(intent);
if (extras != null && !extras.isEmpty()) { // has effect of unparcelling Bundle
// Since we're not using two way messaging, this is all we really to check for
if (GoogleCloudMessaging.MESSAGE_TYPE_MESSAGE.equals(messageType)) {
Logger.getLogger("GCM_RECEIVED").log(Level.INFO, extras.toString());
showToast(extras.getString("message"));
sendNotification(extras.getString("message"));
}
}
//call to the API and get new data.
GcmBroadcastReceiver.completeWakefulIntent(intent);
}
protected void showToast(final String message) {
new Handler(Looper.getMainLooper()).post(new Runnable() {
@Override
public void run() {
Toast.makeText(getApplicationContext(), message, Toast.LENGTH_LONG).show();
}
});
}
private void sendNotification(String msg) {
notification = new android.support.v4.app.NotificationCompat.Builder(this);
//set number of notifications count
//notification.setNumber(x);
//cancels notification when app is opened.
notification.setAutoCancel(true);
//build the notification
notification.setSmallIcon(R.drawable.greenicon);
notification.setTicker("This is the ticker!");
//set time
notification.setWhen(System.currentTimeMillis());
notification.setContentTitle("New message!");
notification.setContentText(msg);
notification.setSound((Settings.System.DEFAULT_NOTIFICATION_URI));
//LED
notification.setLights(Color.RED, 3000, 3000);
// intent
Intent intent = new Intent(this, MainActivity.class);
//give phone access to perform this intent b/c they may be in another part of their phone.
//aka gives phone access to the intents in our app
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
//what to do when notification is clicked:
notification.setContentIntent(pendingIntent);
//Builds notification and issues it (sends it to device). Can build and send out notifcations
NotificationManager nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
//send out notification with uniqueID
nm.notify(2158, notification.build());
}
}
GcmRegistrationAsyncTask
class GcmRegistrationAsyncTask extends AsyncTask<Void, Void, String> {
private static Registration regService = null;
private GoogleCloudMessaging gcm;
private Context context;
// TODO: change to your own sender ID to Google Developers Console project number, as per instructions above
private static final String SENDER_ID = "1026567774990";
public GcmRegistrationAsyncTask(Context context) {
this.context = context;
}
@Override
protected String doInBackground(Void... params) {
if (regService == null) {
Registration.Builder builder = new Registration.Builder(AndroidHttp.newCompatibleTransport(),
new AndroidJsonFactory(), null)
// Need setRootUrl and setGoogleClientRequestInitializer only for local testing,
// otherwise they can be skipped
.setRootUrl("https://push-notif-45657747.appspot.com/_ah/api/")
.setGoogleClientRequestInitializer(new GoogleClientRequestInitializer() {
@Override
public void initialize(AbstractGoogleClientRequest<?> abstractGoogleClientRequest)
throws IOException {
abstractGoogleClientRequest.setDisableGZipContent(true);
}
}) ;
// end of optional local run code
regService = builder.build();
}
String msg = "";
try {
if (gcm == null) {
gcm = GoogleCloudMessaging.getInstance(context);
}
String regId = gcm.register(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.
// The request to your server should be authenticated if your app
// is using accounts.
regService.register(regId).execute();
} catch (IOException ex) {
ex.printStackTrace();
msg = "Error: " + ex.getMessage();
}
return msg;
}
@Override
protected void onPostExecute(String msg) {
Toast.makeText(context, msg, Toast.LENGTH_LONG).show();
Logger.getLogger("REGISTRATION").log(Level.INFO, msg);
}
}
但是，我现在在Android Studio中收到了一些已弃用的错误：
不推荐使用 gcm.register(SENDER_ID);，GoogleCloudMessaging.MESSAGE_TYPE_MESSAGE也是如此。
这个GCM的东西开头很混乱，虽然有一些关于如何使用它的信息here，但我想知道是否有人有任何当前正在使用的非弃用示例，或者你可能会建议一些编辑上面的代码，如果你知道你在做什么......？非常感谢！
答案 0 :(得分：0)
想要给人们一些指导，以防他们迷路。
首先查看并了解此Google Cloud Messaging Android示例：
要使其正常工作，您必须生成google-services.json文件，您可以在此处执行此操作：
https://developers.google.com/mobile/add
确保在转到该链接之前登录Google开发者控制台。它将为您加载项目，并在项目凭据中自动为您设置gcm api密钥。
将google-services.json复制/粘贴到Android项目的/app目录中。
将带有gcm模块的云端点添加到android项目中。
将您的gcm api密钥（可在开发人员控制台的凭据页面上查看）输入云端点后端的webapp-WEB_INF/appengine-web.xml文件中：
<property name="gcm.api.key" value="your-api-key-here"/>
这样，在Android客户端和MessagingEndpoint内部代码将自动获取api密钥（例如，在端点中它将是行Sender sender = new Sender(API_KEY);，它将为您检索它）。
运行示例gcm android项目，它应该工作。使用您部署的API浏览器发送推送通知。
BIG注意：当您准备在自己的应用程序中使用示例代码时，请确保RegistrationIntentService位于程序包的根目录中，否则它将无法运行！花了一段时间来弄明白......不确定它是不是一个bug或什么。