如何在android中使用GCM获取RegistrationID
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How to get RegistrationID using GCM in android
提问by Neha
I am trying to do push notification in android using GCM. I read the Google docs for GCM and their demo application. I created the client side program mentioned here
http://android.amolgupta.in/. But i am not getting registration ID. Also I am not getting some points like:
我正在尝试使用 GCM 在 android 中进行推送通知。我阅读了 GCM 的 Google 文档及其演示应用程序。我创建了这里提到的客户端程序
http://android.amolgupta.in/。但是我没有得到注册ID。我也没有得到一些要点，例如：
- do i need to server program too with this
- on Google demo app they mention that i need to change api key at "samples/gcm-demo-server/WebContent/WEB-INF/classes/api.key" is it necessary to do it every time as i am creating new project
- 我也需要用这个服务器程序吗
- 在 Google 演示应用程序上，他们提到我需要在“samples/gcm-demo-server/WebContent/WEB-INF/classes/api.key”处更改 api 密钥，每次我创建新项目时都需要这样做吗
Can any one provide me proper project other than google provided so that i clear my concepts.
除了谷歌提供的之外，任何人都可以为我提供适当的项目，以便我清除我的概念。
Any help will be appreciated.
任何帮助将不胜感激。
回答by swiftBoy
Here I have written a few steps for How to Get RegID and Notification starting from scratch
这里我写了几个步骤如何从头开始获取RegID和通知
- Create/Register App on Google Cloud
- Setup Cloud SDK with Development
- Configure project for GCM
- Get Device Registration ID
- Send Push Notifications
- Receive Push Notifications
- 在 Google Cloud 上创建/注册应用
- 使用开发设置 Cloud SDK
- 为 GCM 配置项目
- 获取设备注册 ID
- 发送推送通知
- 接收推送通知
You can find a complete tutorial here:
您可以在此处找到完整的教程：
Code snippet to get Registration ID (Device Token for Push Notification).
获取注册 ID（推送通知的设备令牌）的代码片段。
Configure project for GCM
为 GCM 配置项目
Update AndroidManifest file
更新 AndroidManifest 文件
To enable GCM in our project we need to add a few permissions to our manifest file. Go to AndroidManifest.xmland add this code:
Add Permissions
要在我们的项目中启用 GCM，我们需要向清单文件添加一些权限。转到AndroidManifest.xml并添加此代码：添加权限
<uses-permission android:name="android.permission.INTERNET”/>
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.VIBRATE" />
<uses-permission android:name=“.permission.RECEIVE" />
<uses-permission android:name=“<your_package_name_here>.permission.C2D_MESSAGE" />
<permission android:name=“<your_package_name_here>.permission.C2D_MESSAGE"
android:protectionLevel="signature" />
Add GCM Broadcast Receiver declaration in your application tag:
在您的应用程序标签中添加 GCM 广播接收器声明：
<application
<receiver
android:name=".GcmBroadcastReceiver"
android:permission="com.google.android.c2dm.permission.SEND" ]]>
<intent-filter]]>
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
<category android:name="" />
</intent-filter]]>
</receiver]]>
<application/>
Add GCM Service declaration
添加 GCM 服务声明
<application
<service android:name=".GcmIntentService" />
<application/>
Get Registration ID (Device Token for Push Notification)
获取注册 ID（推送通知的设备令牌）
Now Go to your Launch/Splash Activity
现在转到您的启动/启动活动
Add Constants and Class Variables
添加常量和类变量
private final static int PLAY_SERVICES_RESOLUTION_REQUEST = 9000;
public static final String EXTRA_MESSAGE = "message";
public static final String PROPERTY_REG_ID = "registration_id";
private static final String PROPERTY_APP_VERSION = "appVersion";
private final static String TAG = "LaunchActivity";
protected String SENDER_ID = "Your_sender_id";
private GoogleCloudMessaging gcm =null;
private String regid = null;
private Context context= null;
Update OnCreate and OnResume methods
更新 OnCreate 和 OnResume 方法
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_launch);
context = getApplicationContext();
if (checkPlayServices()) {
gcm = GoogleCloudMessaging.getInstance(this);
regid = getRegistrationId(context);
if (regid.isEmpty()) {
registerInBackground();
} else {
Log.d(TAG, "No valid Google Play Services APK found.");
}
}
}
@Override
protected void onResume() {
super.onResume();
checkPlayServices();
}
// # Implement GCM Required methods(Add below methods in LaunchActivity)
private boolean checkPlayServices() {
int resultCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this);
if (resultCode != ConnectionResult.SUCCESS) {
if (GooglePlayServicesUtil.isUserRecoverableError(resultCode)) {
GooglePlayServicesUtil.getErrorDialog(resultCode, this,
PLAY_SERVICES_RESOLUTION_REQUEST).show();
} else {
Log.d(TAG, "This device is not supported - Google Play Services.");
finish();
}
return false;
}
return true;
}
private String getRegistrationId(Context context) {
final SharedPreferences prefs = getGCMPreferences(context);
String registrationId = prefs.getString(PROPERTY_REG_ID, "");
if (registrationId.isEmpty()) {
Log.d(TAG, "Registration ID not found.");
return "";
}
int registeredVersion = prefs.getInt(PROPERTY_APP_VERSION, Integer.MIN_VALUE);
int currentVersion = getAppVersion(context);
if (registeredVersion != currentVersion) {
Log.d(TAG, "App version changed.");
return "";
}
return registrationId;
}
private SharedPreferences getGCMPreferences(Context context) {
return getSharedPreferences(LaunchActivity.class.getSimpleName(),
Context.MODE_PRIVATE);
}
private static int getAppVersion(Context context) {
try {
PackageInfo packageInfo = context.getPackageManager()
.getPackageInfo(context.getPackageName(), 0);
return packageInfo.versionCode;
} catch (NameNotFoundException e) {
throw new RuntimeException("Could not get package name: " + e);
}
}
private void registerInBackground() {
new AsyncTask() {
@Override
protected Object doInBackground(Object...params) {
String msg = "";
try {
if (gcm == null) {
gcm = GoogleCloudMessaging.getInstance(context);
}
regid = gcm.register(SENDER_ID);
Log.d(TAG, "########################################");
Log.d(TAG, "Current Device's Registration ID is: " + msg);
} catch (IOException ex) {
msg = "Error :" + ex.getMessage();
}
return null;
}
protected void onPostExecute(Object result) {
//to do here
};
}.execute(null, null, null);
}
Note: please store REGISTRATION_KEY, it is important for sending PN Message to GCM. Also keep in mind: this key will be unique for all devices and GCM will send Push Notifications by REGISTRATION_KEYonly.
注意：请保存REGISTRATION_KEY，向 GCM 发送 PN Message 很重要。还要记住：这个密钥对所有设备都是唯一的，GCM 将REGISTRATION_KEY仅发送推送通知。
回答by Sparky
In response to your first question: Yes, you have to run a server app to send the messages, as well as a client app to receive them.
回答你的第一个问题：是的，你必须运行一个服务器应用程序来发送消息，以及一个客户端应用程序来接收它们。
In response to your second question: Yes, every application needs its own API key. This key is for your server app, not the client.
回答您的第二个问题：是的，每个应用程序都需要自己的 API 密钥。此密钥用于您的服务器应用程序，而不是客户端。
回答by Gagan Deep
Use this code to get Registration ID using GCM
使用此代码使用 GCM 获取注册 ID
String regId = "", msg = "";
public void getRegisterationID() {
new AsyncTask() {
@Override
protected Object doInBackground(Object...params) {
String msg = "";
try {
if (gcm == null) {
gcm = GoogleCloudMessaging.getInstance(Login.this);
}
regId = gcm.register(YOUR_SENDER_ID);
Log.d("in async task", regId);
// try
msg = "Device registered, registration ID=" + regId;
} catch (IOException ex) {
msg = "Error :" + ex.getMessage();
}
return msg;
}
}.execute(null, null, null);
}
and don't forget to write permissions in manifest...
I hope it helps!
并且不要忘记在清单中写入权限......
我希望它有所帮助！
