在GCM客户端上接收推送通知的问题

Question

我正在尝试在我的Android应用程序中使用GCM实现推送通知.我创建了一个服务器来成功地将消息推送到设备,还创建了一个api来成功地将设备令牌存储在服务器中.基于示例项目在链接中提到的应用程序中创建了一个客户端.并且还在php中创建了一个函数来将通知推送到App.当我在服务器中运行该功能时,我得到的响应就是成功.这意味着消息从gcm发送到移动设备.但是没有显示通知,而是在log cat中获得以下内容.

06-05 14:58:59.172  23693-28001/com.greenboards.base I/dalvikvm? Could not find method android.app.Notification$Builder.setColor, referenced from method com.google.android.gms.gcm.zza.zzv
06-05 14:58:59.172  23693-28001/com.greenboards.base W/dalvikvm? VFY: unable to resolve virtual method 184: Landroid/app/Notification$Builder;.setColor (I)Landroid/app/Notification$Builder;
06-05 14:58:59.173  23693-28001/com.greenboards.base D/dalvikvm? VFY: replacing opcode 0x6e at 0x0068
06-05 14:58:59.175  23693-28001/com.greenboards.base W/GcmNotification? Failed to show notification: Missing icon

要捕获消息,我正在使用示例应用程序中表示的相同侦听器服务(我在下面添加了参考).所以我在通知管理器中想到了这个问题.所以我评论它并运行应用程序.但我再次收到相同的回复,没有任何通知.我不知道是什么问题.

package com.greenboards.base;

import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.NotificationCompat;
import android.util.Log;
import com.greenboards.base.R;

import com.google.android.gms.gcm.GcmListenerService;
import com.greenboards.base.SplashScreen;

public class MyGcmListenerService extends GcmListenerService {

    private static final String TAG = "MyGcmListenerService";

    /**
     * Called when message is received.
     *
     * @param from SenderID of the sender.
     * @param data Data bundle containing message data as key/value pairs.
     *             For Set of keys use data.keySet().
     */
    // [START receive_message]
    @Override
    public void onMessageReceived(String from, Bundle data) {
        String message = data.getString("message");
        Log.d(TAG, "From: " + from);
        Log.d(TAG, "Message: " + message);

        /**
         * Production applications would usually process the message here.
         * Eg: - Syncing with server.
         *     - Store message in local database.
         *     - Update UI.
         */

        /**
         * In some cases it may be useful to show a notification indicating to the user
         * that a message was received.
         */
        sendNotification(message);
    }
    // [END receive_message]

    /**
     * Create and show a simple notification containing the received GCM message.
     *
     * @param message GCM message received.
     */
    private void sendNotification(String message) {
        /*Intent intent = new Intent(this, SplashScreen.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 *//* Request code *//*, intent,
                PendingIntent.FLAG_ONE_SHOT);

        Uri defaultSoundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
                .setSmallIcon(R.drawable.ic_stat_ic_notification)
                .setContentTitle("GCM Message")
                .setContentText(message)
                .setAutoCancel(true)
                .setSound(defaultSoundUri)
                .setContentIntent(pendingIntent);

        NotificationManager notificationManager =
                (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

        notificationManager.notify(0 *//* ID of notification *//*, notificationBuilder.build());*/
        Log.v("notification message",message);
    }
}

但是每当从服务器收到的消息onMessageReceived必须在上面的监听器中调用.在该onMessageReceived功能中有两个记录功能来显示消息和发送者.那也没有执行.这意味着函数本身没有执行.下面我添加了清单内容.

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.greenboards.base"
    android:versionCode="1"
    android:versionName="1.0">

    <uses-sdk
        android:minSdkVersion="9"
        android:targetSdkVersion="19" />

    <!-- Application Permissions -->
    <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.greenboards.base.permission.C2D_MESSAGE"
        android:protectionLevel="signature" />

    <uses-permission android:name="com.greenboards.base.permission.C2D_MESSAGE" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.VIBRATE" />

    <!-- Application Configuration and Activities -->
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme">
        <activity android:name=".SplashScreen">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <!-- [START gcm_receiver] -->
        <receiver
            android:name="com.google.android.gms.gcm.GcmReceiver"
            android:exported="true"
            android:permission="com.google.android.c2dm.permission.SEND" >
            <intent-filter>
                <action android:name="com.google.android.c2dm.intent.RECEIVE" />
                <category android:name="com.greenboards.base" />
            </intent-filter>
        </receiver>
        <!-- [END gcm_receiver] -->

        <!-- [START gcm_listener] -->
        <service
            android:name="com.greenboards.base.MyGcmListenerService"
            android:exported="false" >
            <intent-filter>
                <action android:name="com.google.android.c2dm.intent.RECEIVE" />
            </intent-filter>
        </service>
        <!-- [END gcm_listener] -->
        <!-- [START instanceId_listener] -->
        <service
            android:name="com.greenboards.base.MyInstanceIDListenerService"
            android:exported="false">
            <intent-filter>
                <action android:name="com.google.android.gms.iid.InstanceID"/>
            </intent-filter>
        </service>
        <!-- [END instanceId_listener] -->
        <service
            android:name="com.greenboards.base.RegistrationIntentService"
            android:exported="false">
        </service>

    </application>
</manifest>

现在我仍然无法调试问题所在.我做错了什么或者我错过了什么？

Answer 1

根据此链接,您应该具有键/值对图标.

检查通知有效负载的图标参数.根据需要指定.

因此,您必须在JSON中包含一个图标.

一个例子可能是

{
    "to":   
"ci4ZzC4BW....",  
    "notification": {  
        "title": "Testing",  
        "body": "Success",  
        "icon": "@drawable/myicon"  
    }  
}

myicon是应用程序myicon.png中drawable文件夹中命名的图像.

onMessageReceived在data收到带有有效载荷的消息时调用.当我们在上面的json中更改notification为data(如下所示)时,onMessageReceived将调用该函数.

{
    "to":   
"ci4ZzC4BW....",  
    "data": {  
        "title": "Testing",  
        "body": "Success",  
        "icon": "@drawable/myicon"  
    }  
}