說到GCM就想到推播功能
但是說到這裡，大多能參考的教學版本不符時事
因為自從4.X以上版本直接用google-play-services的Library
本人也被GCM服務搞得一頭霧水
如果本人提供的方法有問題，歡迎指教
參考來源 : 官方連結
話不多說，開始來動手做吧
package 為 com.example.gcm
如果本人提供的方法有問題，歡迎指教
參考來源 : 官方連結
話不多說，開始來動手做吧
package 為 com.example.gcm
- 匯入google-play-services_lib並在加入目標專案底下
- 增加AndroidManifest.xml內容
若package不同，請改紅字部分<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.gcm" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="9" android:targetSdkVersion="19" /> <!-- Start --> <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="com.google.android.c2dm.permission.RECEIVE" /> <permission android:name="com.example.gcm.permission.C2D_MESSAGE" android:protectionLevel="signature" /> <uses-permission android:name="com.example.gcm.permission.C2D_MESSAGE" /> <!-- The end --> <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:name="DemoActivity" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <!-- Start --> <meta-data android:name="com.google.android.gms.version" android:value="@integer/google_play_services_version" /> <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="com.example.gcm" /> </intent-filter> </receiver> <service android:name=".GcmIntentService" /> <!-- The end --> </application> </manifest> - DemoActivity.java
ID記得改package com.example.gcm; import java.io.IOException; import java.util.concurrent.atomic.AtomicInteger; import android.app.Activity; import android.content.Context; import android.content.SharedPreferences; import android.content.pm.PackageInfo; import android.content.pm.PackageManager.NameNotFoundException; import android.os.AsyncTask; import android.os.Bundle; import android.util.Log; import android.widget.TextView; import com.google.android.gms.common.ConnectionResult; import com.google.android.gms.common.GooglePlayServicesUtil; import com.google.android.gms.gcm.GoogleCloudMessaging; public class DemoActivity extends Activity{ 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 int PLAY_SERVICES_RESOLUTION_REQUEST = 9000; /*project id*/ String SENDER_ID = "1234567890"; static final String TAG = "GCMDemo"; TextView mDisplay; GoogleCloudMessaging gcm; AtomicInteger msgId = new AtomicInteger(); SharedPreferences prefs; Context context; String regid; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mDisplay = (TextView) findViewById(R.id.display); context = getApplicationContext(); // Check device for Play Services APK. If check succeeds, proceed with // GCM registration. if (checkPlayServices()) { gcm = GoogleCloudMessaging.getInstance(this); regid = getRegistrationId(context); Log.d("tag","gcm run"+regid); if (regid.isEmpty()) { registerInBackground(); } } else { Log.i(TAG, "No valid Google Play Services APK found."); } } private String getRegistrationId(Context context) { final SharedPreferences prefs = getGCMPreferences(context); String registrationId = prefs.getString(PROPERTY_REG_ID, ""); if (registrationId.isEmpty()) { Log.i(TAG, "Registration not found."); return ""; } // Check if app was updated; if so, it must clear the registration ID // since the existing regID is not guaranteed to work with the new // app version. int registeredVersion = prefs.getInt(PROPERTY_APP_VERSION, Integer.MIN_VALUE); int currentVersion = getAppVersion(context); if (registeredVersion != currentVersion) { Log.i(TAG, "App version changed."); return ""; } return registrationId; } private SharedPreferences getGCMPreferences(Context context) { // This sample app persists the registration ID in shared preferences, but // how you store the regID in your app is up to you. return getSharedPreferences(DemoActivity.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) { // should never happen throw new RuntimeException("Could not get package name: " + e); } } private class RunTask extends AsyncTask<Void,Void,String>{ @Override protected String doInBackground(Void... params) { String msg = ""; try { if (gcm == null) { gcm = GoogleCloudMessaging.getInstance(context); } 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. sendRegistrationIdToBackend(); // 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. // Persist the regID - no need to register again. storeRegistrationId(context, regid); } catch (IOException ex) { msg = "Error :" + ex.getMessage(); // If there is an error, don't just keep trying to register. // Require the user to click a button again, or perform // exponential back-off. } return msg; } } private void registerInBackground() { new RunTask().execute(null, null, null); } private void sendRegistrationIdToBackend() { // Your implementation here. } private void storeRegistrationId(Context context, String regId) { final SharedPreferences prefs = getGCMPreferences(context); int appVersion = getAppVersion(context); Log.i(TAG, "Saving regId on app version " + appVersion); SharedPreferences.Editor editor = prefs.edit(); editor.putString(PROPERTY_REG_ID, regId); editor.putInt(PROPERTY_APP_VERSION, appVersion); editor.commit(); } @Override protected void onResume() { super.onResume(); checkPlayServices(); } 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.i(TAG, "This device is not supported."); finish(); } return false; } return true; } } - GcmBroadcastReceiver.java
package com.example.gcm; import android.app.Activity; import android.content.ComponentName; import android.content.Context; import android.content.Intent; import android.support.v4.content.WakefulBroadcastReceiver; 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
package com.example.gcm; import static com.example.gcm.DemoActivity.TAG; import android.app.IntentService; import android.app.NotificationManager; import android.app.PendingIntent; import android.content.Context; import android.content.Intent; import android.os.Bundle; import android.os.SystemClock; import android.support.v4.app.NotificationCompat; import android.util.Log; import com.google.android.gms.gcm.GoogleCloudMessaging; public class GcmIntentService extends IntentService { public static final int NOTIFICATION_ID = 1; private NotificationManager mNotificationManager; NotificationCompat.Builder builder; 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.isEmpty()) { // has effect of unparcelling Bundle /* * Filter messages based on message type. Since it is likely that GCM * will be extended in the future with new message types, just ignore * any message types you're not interested in, or that you don't * recognize. */ if (GoogleCloudMessaging. MESSAGE_TYPE_SEND_ERROR.equals(messageType)) { sendNotification("Send error: " + extras.toString()); } else if (GoogleCloudMessaging. MESSAGE_TYPE_DELETED.equals(messageType)) { sendNotification("Deleted messages on server: " + extras.toString()); // If it's a regular GCM message, do some work. } else if (GoogleCloudMessaging. MESSAGE_TYPE_MESSAGE.equals(messageType)) { // This loop represents the service doing some work. for (int i=0; i<5; i++) { Log.i(TAG, "Working... " + (i+1) + "/5 @ " + SystemClock.elapsedRealtime()); try { Thread.sleep(5000); } catch (InterruptedException e) { } } Log.i(TAG, "Completed work @ " + SystemClock.elapsedRealtime()); // Post notification of received message. sendNotification("Received: " + extras.toString()); Log.i(TAG, "Received: " + extras.toString()); } } // Release the wake lock provided by the WakefulBroadcastReceiver. GcmBroadcastReceiver.completeWakefulIntent(intent); } // Put the message into a notification and post it. // This is just one simple example of what you might choose to do with // a GCM message. private void sendNotification(String msg) { mNotificationManager = (NotificationManager) this.getSystemService(Context.NOTIFICATION_SERVICE); PendingIntent contentIntent = PendingIntent.getActivity(this, 0, new Intent(this, DemoActivity.class), 0); NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this) .setSmallIcon(R.drawable.ic_launcher) .setContentTitle("GCM Notification") .setStyle(new NotificationCompat.BigTextStyle() .bigText(msg)) .setContentText(msg); mBuilder.setContentIntent(contentIntent); mNotificationManager.notify(NOTIFICATION_ID, mBuilder.build()); } } - 記得DemoActivity有一行紅色ID需求嗎?
Google Developers Console : 位置
只需創立一個專案就可以
String SENDER_ID = "1234567890"; (改為您自己的ID)
請用自己的Google帳號去申請一個專案( 這不用申請API Key ) - Google Developers Console 開通 GCM
- 執行程式
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