Vin*_*nod 264 android push alerts
我正在寻找一个从服务器接收推送警报的应用程序.我找到了几种方法来做到这一点.
每个都有自己的局限性.短信 - 抵达时无法保证.民意调查可能会耗尽电池电量.
你有更好的建议吗?非常感谢.
BoD*_*BoD 203
Google的官方答案是Android云到设备消息传递框架(已弃用) Google云消息传递(已弃用) Firebase云消息传递
它适用于Android> = 2.2(在拥有Play商店的手机上).
dal*_*ane 29
(从我给出的类似问题的答案中交叉发布 - Android是否支持实时推送通知?)
我最近开始玩Android的MQTT http://mqtt.org作为一种做这种事情的方式(即推送通知不是短信而是数据驱动,几乎是即时消息传递,而不是轮询等)
我有一篇博客文章,其中包含有关这方面的背景信息,以防它有用
http://dalelane.co.uk/blog/?p=938
(注意:MQTT是一种IBM技术,我应该指出我在IBM工作.)
chi*_*jib 17
Android云到设备消息传递框架
重要提示:截至2012年6月26日,C2DM已正式弃用.这意味着C2DM已停止接受新用户和配额请求.C2DM不会添加任何新功能.但是,使用C2DM的应用程序将继续运行.鼓励现有C2DM开发人员迁移到新版本的C2DM,称为Google Cloud Messaging for Android(GCM).有关更多信息,请参阅C2DM-to-GCM迁移文档.开发人员必须使用GCM进行新开发.
请检查以下链接:
http://developer.android.com/guide/google/gcm/index.html
swi*_*Boy 17
在这里,我已经为如何从头开始获取RegID和通知编写了几个步骤
您可以在以下URL链接中找到完整的教程
代码片段以获取注册ID(推送通知的设备令牌).
为GCM配置项目
为了在我们的项目中启用GCM,我们需要在我们的清单文件中添加一些权限转到AndroidManifest.xml并添加以下代码添加权限
<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" />
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添加GCM广播接收器声明
在应用程序标记中添加GCM Broadcast Receiver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/>
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添加GCM Servie声明
<application
<service android:name=".GcmIntentService" />
<application/>
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现在转到您的启动/启动活动
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;
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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);
}
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注意:请存储REGISTRATION_KEY,将GC消息发送到GCM也很重要,这对于所有设备都是唯一的,通过使用此功能,只有GCM才会发送推送通知.
添加GCM广播接收器类
因为我们已经在我们的Manifest文件中声明了"GcmBroadcastReceiver.java",所以让我们以这种方式创建这个类更新接收器类代码
public class GcmBroadcastReceiver extends WakefulBroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent)
{ ComponentName comp = new ComponentName(context.getPackageName(),
GcmIntentService.class.getName()); startWakefulService(context, (intent.setComponent(comp)));
setResultCode(Activity.RESULT_OK);
Toast.makeText(context, “wow!! received new push notification", Toast.LENGTH_LONG).show();
}
}
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添加GCM服务类
因为我们已经在我们的Manifest文件中声明了"GcmBroadcastReceiver.java",所以让我们以这种方式创建这个类更新接收器类代码
public class GcmIntentService extends IntentService
{ public static final int NOTIFICATION_ID = 1; private NotificationManager mNotificationManager; private final static String TAG = "GcmIntentService"; public GcmIntentService() {
super("GcmIntentService");
} @Override
protected void onHandleIntent(Intent intent) {
Bundle extras = intent.getExtras();
Log.d(TAG, "Notification Data Json :" + extras.getString("message"));
GoogleCloudMessaging gcm = GoogleCloudMessaging.getInstance(this);
String messageType = gcm.getMessageType(intent); if (!extras.isEmpty()) { 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.d(TAG," Working... " + (i + 1) + "/5 @ "
+ SystemClock.elapsedRealtime()); try {
Thread.sleep(5000);
} catch (InterruptedException e) {
}
}
Log.i(TAG, "Completed work @ " + SystemClock.elapsedRealtime());
sendNotification(extras.getString("message"));
}
} // 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, LaunchActivity.class), 0);
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder( this)
.setSmallIcon(R.drawable.icon)
.setContentTitle("Ocutag Snap")
.setStyle(new NotificationCompat.BigTextStyle().bigText(msg))
.setContentText(msg)
.setDefaults(Notification.DEFAULT_SOUND | Notification.DEFAULT_VIBRATE);
mBuilder.setContentIntent(contentIntent); mNotificationManager.notify(NOTIFICATION_ID, mBuilder.build());
}
}
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mtb*_*ave 11
有一项新的开源工作,即在Android上基于Meteor Web服务器开发推送通知的Java库.您可以在Deacon项目博客中查看,在那里您可以找到Meteor和项目的GitHub存储库的链接.我们需要开发人员,所以请传播!
小智 9
您可以使用Xtify(http://developer.xtify.com) - 他们有一个推送通知Web服务,可以与他们的SDK一起使用.它是免费的,到目前为止,它对我来说真的很好.
要么....
3)保持与服务器的连接,每隔几分钟发送一次保持活动,服务器可以立即推送消息.这就是Gmail,Google Talk等的工作方式.
我建议使用GCM - Google Cloud Messaging for Android 它是免费的,对于简单的用途,它应该非常简单.
但是,它需要维护第三方服务器以代表您发送通知.如果您想避免使用Android推送通知服务的一些非常好的工业解决方案:
Diclaimer - 我在PushApps工作,并且在我的应用程序中使用他们的产品已有一年多了.
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