在android版本中没有收到FCM通知消息？
在android版本中没有收到FCM通知消息？
提问于 2018-07-18 13:55:08
我已将FCM通知从服务器发送给用户。它可以正常工作(直到api 25)，但是在Oreo中，当应用程序没有后台(服务被关闭)(或)完全关闭时，.I在这个场景中没有收到任何FCM通知，但是在Whatsapp中工作得很好。这里我附加了FCM代码。
Manifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.fcm">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service
android:name=".MyFirebaseMessagingService">
<intent-filter>
<action android:name="com.google.firebase.MESSAGING_EVENT"/>
</intent-filter>
<intent-filter>
<action android:name="com.google.firebase.INSTANCE_ID_EVENT"/>
</intent-filter>
</service>
<meta-data
android:name="com.google.firebase.messaging.default_notification_icon"
android:resource="@drawable/ic_stat_ic_notification" />
<meta-data
android:name="com.google.firebase.messaging.default_notification_color"
android:resource="@color/colorAccent" />
<meta-data
android:name="com.google.firebase.messaging.default_notification_channel_id"
android:value="fcm"/>
<meta-data android:name="firebase_messaging_auto_init_enabled"
android:value="false" />
<meta-data android:name="firebase_analytics_collection_enabled"
android:value="false" />
</application>
</manifest>app/gradle
apply plugin: 'com.android.application'
android {
compileSdkVersion 28
defaultConfig {
applicationId "com.fcm"
minSdkVersion 16
targetSdkVersion 28
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support.constraint:constraint-layout:1.1.2'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
implementation 'com.google.firebase:firebase-messaging:17.1.0'
}
apply plugin: 'com.google.gms.google-services'MyFirebaseMessagingService.java
package com.fcm;
import android.app.Service;
import android.util.Log;
import com.google.firebase.messaging.FirebaseMessagingService;
import com.google.firebase.messaging.RemoteMessage;
public class MyFirebaseMessagingService extends FirebaseMessagingService
{
@Override
public void onNewToken(String s)
{
super.onNewToken(s);
}
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
super.onMessageReceived(remoteMessage);
Log.e("FCM Message Received","You Have FCM Message");
}
}MainActivity.java
package com.nexge.fcm;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.firebase.iid.FirebaseInstanceId;
import com.google.firebase.iid.InstanceIdResult;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
FirebaseInstanceId.getInstance().getInstanceId().addOnSuccessListener( this, new OnSuccessListener<InstanceIdResult>() {
@Override
public void onSuccess(InstanceIdResult instanceIdResult) {
String newToken = instanceIdResult.getToken();
Log.e("newToken",newToken);
}
});
}
}回答 9
Stack Overflow用户
回答已采纳
发布于 2018-07-25 11:04:50
当您针对Android8.0(APILevel26)时，您必须实现一个或多个通知通道。如果您的targetSdkVersion设置为25或更低，当您的应用程序在Android8.0 (API 26)或更高版本上运行时，它的行为与运行Android7.1 (API 25)或更低的设备的行为相同。
注：--如果您的目标是Android8.0( appear 26)，并在不指定通知通道的情况下发布通知，则通知不会出现，系统会记录错误。
注意:在Android8.0 (API 26)中，您可以打开一个新设置来显示屏幕上的警告，当一个针对Android8.0 (API 26)的应用试图在没有通知通道的情况下发布时，这个警告就会显示为祝酒词。要打开运行Android8.0 (API级别26)的开发设备的设置，请导航到设置> Developer选项和启用通知通道警告。
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
String id = "id_product";
// The user-visible name of the channel.
CharSequence name = "Product";
// The user-visible description of the channel.
String description = "Notifications regarding our products";
int importance = NotificationManager.IMPORTANCE_MAX;
NotificationChannel mChannel = new NotificationChannel(id, name, importance);
// Configure the notification channel.
mChannel.setDescription(description);
mChannel.enableLights(true);
// Sets the notification light color for notifications posted to this
// channel, if the device supports this feature.
mChannel.setLightColor(Color.RED);
notificationManager.createNotificationChannel(mChannel);
}在Android 上创建推送通知
要创建通知，您将使用NotificationCompat.Builder类。以前使用的构造函数只将上下文作为参数，但在Android中，构造函数如下所示-
NotificationCompat.Builder(Context context, String channelId)下面的代码片段将向您展示如何创建通知-
Intent intent1 = new Intent(getApplicationContext(), Ma
inActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(getApplicationContext(), 123, intent1, PendingIntent.FLAG_UPDATE_CURRENT);
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(getApplicationContext(),"id_product")
.setSmallIcon(R.drawable.flatpnicon) //your app icon
.setBadgeIconType(R.drawable.flatpnicon) //your app icon
.setChannelId(id)
.setContentTitle(extras.get("nt").toString())
.setAutoCancel(true).setContentIntent(pendingIntent)
.setNumber(1)
.setColor(255)
.setContentText(extras.get("nm").toString())
.setWhen(System.currentTimeMillis());
notificationManager.notify(1, notificationBuilder.build());Android O给你更多的功能来定制你的通知-
setChannelId() setNumber()--允许您设置长按菜单中显示的数字如果您使用的是旧的构造函数setColor()，则允许您显式设置频道Id -允许RGB值为您的通知setBadgeIconType()设置一个颜色主题允许您设置一个图标以显示在长按菜单中。
有关更多信息，检查这里的示例
Stack Overflow用户
发布于 2018-07-31 01:52:59
“从Android8.0(Appear 26)开始，所有通知都必须分配给一个通道，否则它不会出现”。
单独的通知现在必须放在特定的通道中。 (参考文献)
选项1简单更改目标安卓版本Android7.1 (API 25)或更低。
compileSdkVersion 25
defaultConfig {
applicationId "com.fcm"
minSdkVersion 16
targetSdkVersion 25
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}选项2如果您不想更改目标版本，请遵循以下方法
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationManager nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
NotificationChannel nc = new NotificationChannel(“[enter your product id]”, “[Name]”,NotificationManager.IMPORTANCE_MAX);
nc.setDescription(“[your description for the notification]”);
nc.enableLights(true);
nc.setLightColor(Color.GREEN);
nm.createNotificationChannel(nc);
}使用以下生成器构造函数
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(appContext, [id you mentioned above in constructor of NotificationChannel])从Builder创建通知
nm.notify("0", notificationBuilder.build())Stack Overflow用户
发布于 2018-07-26 09:23:05
在oreo版本中，无法在没有通道的情况下添加通知，因此需要在firebase通知Service类中添加以下代码，因为没有通道的oreo通知不能发送通知：
private void sendMyNotification(String message,String title) {
NotificationManager notificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
Intent intent = new Intent(this, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_SINGLE_TOP);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_ONE_SHOT);
Uri soundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
@SuppressLint("WrongConstant")
NotificationChannel notificationChannel=new NotificationChannel("my_notification","n_channel",NotificationManager.IMPORTANCE_MAX);
notificationChannel.setDescription("description");
notificationChannel.setName("Channel Name");
notificationManager.createNotificationChannel(notificationChannel);
}
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.listlogo)
.setLargeIcon(BitmapFactory.decodeResource(getResources(), R.drawable.tlogo))
.setContentTitle(title)
.setContentText(message)
.setAutoCancel(true)
.setSound(soundUri)
.setContentIntent(pendingIntent)
.setDefaults(Notification.DEFAULT_ALL)
.setPriority(NotificationManager.IMPORTANCE_MAX)
.setOnlyAlertOnce(true)
.setChannelId("my_notification")
.setColor(Color.parseColor("#3F5996"));
//.setProgress(100,50,false);
notificationManager.notify(0, notificationBuilder.build());
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/51403886
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