Question

就我而言，Firebase文本推送通知工作正常，但图像未显示在推送通知中，请告诉我可能是什么原因，也请纠正我的代码，因为我是android studio上的新手。

MyFirebaseMessagingService.java

package com.iaritoppers.FirebaseService;

import android.app.Notification;
import android.app.NotificationManager;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.drawable.Drawable;
import android.media.Ringtone;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Build;
import android.os.Handler;
import android.os.Looper;

import androidx.annotation.RequiresApi;
import androidx.core.app.NotificationCompat;

import com.google.firebase.messaging.FirebaseMessagingService;
import com.google.firebase.messaging.RemoteMessage;
import com.iaritoppers.Config.Config;
import com.iaritoppers.Helper.NotificationHelper;
import com.iaritoppers.R;
import com.squareup.picasso.Picasso;
import com.squareup.picasso.Target;

public class MyFirebaseMessagingService extends FirebaseMessagingService {

    Target target = new Target() {
        @Override
        public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
            
            if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
                showNotificationWithImageLevel26 (bitmap);
            else 
            showNotificationWithImage(bitmap);

        }

        @Override
        public void onBitmapFailed(Drawable errorDrawable) {

        }

        @Override
        public void onPrepareLoad(Drawable placeHolderDrawable) {

        }
    };

    @RequiresApi(api = Build.VERSION_CODES.O)
    private void showNotificationWithImageLevel26(Bitmap bitmap) {
        NotificationHelper helper = new NotificationHelper(getBaseContext());

        Notification.Builder builder = helper.getchannel(Config.title,Config.message,bitmap);
        helper.getManager().notify(0,builder.build() );
    }

    private void showNotificationWithImage(Bitmap bitmap) {
        NotificationCompat.BigPictureStyle style = new NotificationCompat.BigPictureStyle();
        style.setSummaryText(Config.message);
        style.bigPicture(bitmap);

        Uri defaultSound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);

        NotificationCompat.Builder notificationBuilder = (NotificationCompat.Builder) new NotificationCompat.Builder(getApplicationContext())
                .setSmallIcon(R.mipmap.ic_launcher_round)
                .setAutoCancel(true)
                .setSound(defaultSound)
                .setStyle(style);
        NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        manager.notify(0, notificationBuilder.build());


    }

    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        if (remoteMessage.getData() !=null)
            getImage(remoteMessage);
    }

    private void getImage(final RemoteMessage remoteMessage) {
        Config.message = remoteMessage.getNotification().getBody();
        Config.title = remoteMessage.getNotification().getTitle();
        if (remoteMessage.getData() != null) {
            Handler uiHandler = new Handler(Looper.getMainLooper());
            uiHandler.post(new Runnable() {
                @Override
                public void run() {

                    Picasso.with(getApplicationContext())
                            .load(remoteMessage.getData().get("image"))
                            .into(target);
                }
            });

        }
    }
}

MyFirebaseService.java

package com.iaritoppers.FirebaseService;

import android.util.Log;

import com.google.firebase.iid.FirebaseInstanceId;
import com.google.firebase.iid.FirebaseInstanceIdService;

public class MyFirebaseService extends FirebaseInstanceIdService {
    @Override
    public void onTokenRefresh() {
        super.onTokenRefresh();
        sendNewTokenToServer (FirebaseInstanceId.getInstance().getToken());
    }

    private void sendNewTokenToServer(String token) {
        Log.d("EDMTTToken",token);
    }
}

NotificationHelper.java

package com.iaritoppers.Helper;

import android.app.Notification;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.content.Context;
import android.content.ContextWrapper;
import android.graphics.Bitmap;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Build;

import androidx.annotation.RequiresApi;
import androidx.core.app.NotificationCompat;

import com.iaritoppers.Config.Config;
import com.iaritoppers.R;

public class NotificationHelper extends ContextWrapper {
    private static final String EDMT_CHANNEL_ID = "com.iaritoppers.EDMTDev";
    private static final String EDMT_CHANNEL_Name = "EDMTDev";
    private NotificationManager manager;

    public NotificationHelper(Context base) {
        super(base);
        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            createChannel();
        }
    }

    @RequiresApi(api = Build.VERSION_CODES.O)
    private void createChannel() {
        NotificationChannel channel = new NotificationChannel(EDMT_CHANNEL_ID,EDMT_CHANNEL_Name,NotificationManager.IMPORTANCE_DEFAULT);
        channel.enableVibration(true);
        channel.enableLights(true);
        channel.setLockscreenVisibility(Notification.VISIBILITY_PRIVATE);

        getManager().createNotificationChannel(channel);


    }

    public NotificationManager getManager() {
        if (manager == null)
        manager = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
        return manager;
    }

    @RequiresApi(api = Build.VERSION_CODES.O)
    public Notification.Builder getchannel(String title, String body, Bitmap bitmap)
    {
        Notification.Style style = new Notification.BigPictureStyle().bigPicture(bitmap);

        Uri defaultSound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);

        return new Notification.Builder(getApplicationContext(),EDMT_CHANNEL_ID)
                .setSmallIcon(R.mipmap.ic_launcher_round)
                .setAutoCancel(true)
                .setSound(defaultSound)
                .setStyle(style);
    }
}

Config.java

package com.iaritoppers.Config;

public class Config {
    public static String message="";
    public static String title="";
}

Manifest.xml

<service android:name=".FirebaseService.MyFirebaseService">
            <intent-filter>
                <action android:name="com.google.INSTANCE_ID_EVENT" />
            </intent-filter>
        </service>
        <service android:name=".FirebaseService.MyFirebaseMessagingService">
            <intent-filter>
                <action android:name="com.google.firebase.MESSAGING_EVENT" />
            </intent-filter>
        </service>

Answer 1

只需将此代码添加到MyFirebaseMessagingService文件中即可。将您的通知图像转换为位图..

String channelId = getString(R.string.default_notification_channel_id);
    Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
NotificationCompat.Builder notificationBuilder =
            new NotificationCompat.Builder(this, channelId)
                    .setSmallIcon(R.drawable.notification_icon)
                    .setLargeIcon(bitmap)
                    .setStyle(new NotificationCompat.BigPictureStyle()
                            .bigPicture(bitmap))
                    .setContentTitle(remoteMessage.getNotification().getTitle())
                    .setContentText(messageBody)
                    .setAutoCancel(true)
                    .setBadgeIconType(NotificationCompat.BADGE_ICON_SMALL)
                    .setSound(defaultSoundUri)
                    .setPriority(Notification.PRIORITY_HIGH)
                    .setVibrate(new long[]{1000, 1000, 1000, 1000, 1000})
                    .setContentIntent(pendingIntent);

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

    // Since android Oreo notification channel is needed.
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        NotificationChannel channel = new NotificationChannel(channelId,
                getString(R.string.default_notification_channel_name),
                NotificationManager.IMPORTANCE_HIGH);
        channel.setVibrationPattern(new long[]{1000, 1000, 1000, 1000, 1000});
        channel.setShowBadge(true);
        channel.enableVibration(true);
        channel.enableLights(true);
        notificationManager.createNotificationChannel(channel);
    }

    notificationManager.notify(0 /* ID of notification */, notificationBuilder.build());

Answer 2

完整的推送通知代码::

public class MyFirebaseMessagingService extends FirebaseMessagingService {

private static final String TAG = MyFirebaseMessagingService.class.getSimpleName();
Bitmap bitmap;

@Override
public void onNewToken(String s) {
    super.onNewToken(s);
    Log.e("NEW_TOKEN", s);
    storeRegIdInPref(s);

}

private void storeRegIdInPref(String token) {
    SharedPreferences pref = getApplicationContext().getSharedPreferences(Config.SHARED_PREF, 0);
    SharedPreferences.Editor editor = pref.edit();
    editor.putString("regId", token);
    editor.commit();
}

@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
    Log.d(TAG, "From: " + remoteMessage.getFrom());

    // Check if message contains a data payload.
    if (remoteMessage.getData().size() > 0) {
        Log.d(TAG, "Message data payload: " + remoteMessage.getData());
    }

    // Check if message contains a notification payload.
    if (remoteMessage.getNotification() != null) {
        Log.d(TAG, "Message Notification Body: " + remoteMessage.getNotification().getBody());
        Bitmap bitmap = getBitmapfromUrl(remoteMessage.getNotification().getImageUrl().toString());

        sendNotification_withImage(remoteMessage.getNotification().getBody(), remoteMessage,bitmap);

    }
}

public Bitmap getBitmapfromUrl(String imageUrl) {
    try {
        URL url = new URL(imageUrl);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setDoInput(true);
        connection.connect();
        InputStream input = connection.getInputStream();
        Bitmap bitmap = BitmapFactory.decodeStream(input);
        return bitmap;

    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
        return null;

    }
}


private void sendNotification_withImage(String messageBody, RemoteMessage remoteMessage, Bitmap bitmap) {
    Intent intent = new Intent(this, MenuActivity.class);
    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent,
            PendingIntent.FLAG_ONE_SHOT);

    String channelId = getString(R.string.default_notification_channel_id);
    Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
    NotificationCompat.Builder notificationBuilder =
            new NotificationCompat.Builder(this, channelId)
                    .setSmallIcon(R.drawable.notification_icon)
                    .setLargeIcon(bitmap)
                    .setStyle(new NotificationCompat.BigPictureStyle()
                            .bigPicture(bitmap))
                    .setContentTitle(remoteMessage.getNotification().getTitle())
                    .setContentText(messageBody)
                    .setAutoCancel(true)
                    .setBadgeIconType(NotificationCompat.BADGE_ICON_SMALL)
                    .setSound(defaultSoundUri)
                    .setPriority(Notification.PRIORITY_HIGH)
                    .setVibrate(new long[]{1000, 1000, 1000, 1000, 1000})
                    .setContentIntent(pendingIntent);

    notificationBuilder.setDefaults(DEFAULT_SOUND | DEFAULT_VIBRATE);

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

    // Since android Oreo notification channel is needed.
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        NotificationChannel channel = new NotificationChannel(channelId,
                getString(R.string.default_notification_channel_name),
                NotificationManager.IMPORTANCE_HIGH);
        channel.setVibrationPattern(new long[]{1000, 1000, 1000, 1000, 1000});
        channel.setShowBadge(true);
        channel.enableVibration(true);
        channel.enableLights(true);
        notificationManager.createNotificationChannel(channel);
    }

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

}

图片未显示推送通知文本

2 个答案: