我正在尝试从Web应用程序使用FCM发送通知消息。但是，Android应用程序无法显示通知。当我使用firebase控制台时，会显示通知，但是当我使用PHP脚本时，不会显示。我做了一些研究，发现我的应用程序实际上收到了有效负载，但没有显示通知。我试图寻找错误，但是找不到。这是我的代码：
MyFirebaseMessagingService
import android.content.Intent;
import android.util.Log;
import com.bloodconnect.Activities.Home;
import com.bloodconnect.Activities.Login;
import com.bloodconnect.FCM.Notification.MyNotificationManager;
import com.google.firebase.messaging.FirebaseMessagingService;
import com.google.firebase.messaging.RemoteMessage;
import org.json.JSONException;
import org.json.JSONObject;
/**
* Created by delaroy on 10/8/17.
*/
public class MyFirebaseMessagingService extends FirebaseMessagingService {
private static final String TAG = "MyFirebaseMsgService";
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
if (remoteMessage.getData().size() > 0) {
Log.e(TAG, "Data Payload: " + remoteMessage.getData().toString());
try {
JSONObject json = new JSONObject(remoteMessage.getData().toString());
sendPushNotification(json);
} catch (Exception e) {
Log.e(TAG, "Exception: " + e.getMessage());
}
}
}
//this method will display the notification
//We are passing the JSONObject that is received from
//firebase cloud messaging
private void sendPushNotification(JSONObject json) {
//optionally we can display the json into log
Log.e(TAG, "Notification JSON " + json.toString());
try {
//getting the json data
JSONObject data = json.getJSONObject("data");
//parsing json data
String title = data.getString("title");
String message = data.getString("message");
String imageUrl = data.getString("image");
//creating MyNotificationManager object
MyNotificationManager mNotificationManager = new MyNotificationManager(getApplicationContext());
//creating an intent for the notification
Intent intent = new Intent(getApplicationContext(), Home.class);
//if there is no image
if(imageUrl.equals("null")){
//displaying small notification
mNotificationManager.showSmallNotification(title, message, intent);
}else{
//if there is an image
//displaying a big notification
mNotificationManager.showBigNotification(title, message, imageUrl, intent);
}
} catch (JSONException e) {
Log.e(TAG, "Json Exception: " + e.getMessage());
} catch (Exception e) {
Log.e(TAG, "Exception: " + e.getMessage());
}
}
}
我正在使用通知类显示通知。
MyNotificationManager.java
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.support.v4.app.NotificationCompat;
import android.text.Html;
import com.bloodconnect.R;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
/**
* Created by delaroy on 10/8/17.
*/
public class MyNotificationManager {
public static final int ID_BIG_NOTIFICATION = 234;
public static final int ID_SMALL_NOTIFICATION = 235;
private Context mCtx;
public MyNotificationManager(Context mCtx) {
this.mCtx = mCtx;
}
//the method will show a big notification with an image
//parameters are title for message title, message for message text, url of the big image and an intent that will open
//when you will tap on the notification
public void showBigNotification(String title, String message, String url, Intent intent) {
PendingIntent resultPendingIntent =
PendingIntent.getActivity(
mCtx,
ID_BIG_NOTIFICATION,
intent,
PendingIntent.FLAG_UPDATE_CURRENT
);
NotificationCompat.BigPictureStyle bigPictureStyle = new NotificationCompat.BigPictureStyle();
bigPictureStyle.setBigContentTitle(title);
bigPictureStyle.setSummaryText(Html.fromHtml(message).toString());
bigPictureStyle.bigPicture(getBitmapFromURL(url));
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(mCtx);
Notification notification;
notification = mBuilder.setSmallIcon(R.mipmap.ic_launcher).setTicker(title).setWhen(0)
.setAutoCancel(true)
.setContentIntent(resultPendingIntent)
.setContentTitle(title)
.setStyle(bigPictureStyle)
.setSmallIcon(R.mipmap.ic_launcher)
.setLargeIcon(BitmapFactory.decodeResource(mCtx.getResources(), R.mipmap.ic_launcher))
.setContentText(message)
.build();
notification.flags |= Notification.FLAG_AUTO_CANCEL;
NotificationManager notificationManager = (NotificationManager) mCtx.getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(ID_BIG_NOTIFICATION, notification);
}
//the method will show a small notification
//parameters are title for message title, a message for message text and an intent that will open
//when you will tap on the notification
public void showSmallNotification(String title, String message, Intent intent) {
PendingIntent resultPendingIntent =
PendingIntent.getActivity(
mCtx,
ID_SMALL_NOTIFICATION,
intent,
PendingIntent.FLAG_UPDATE_CURRENT
);
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(mCtx);
Notification notification;
notification = mBuilder.setSmallIcon(R.mipmap.ic_launcher).setTicker(title).setWhen(0)
.setAutoCancel(true)
.setContentIntent(resultPendingIntent)
.setContentTitle(title)
.setSmallIcon(R.mipmap.ic_launcher)
.setLargeIcon(BitmapFactory.decodeResource(mCtx.getResources(), R.mipmap.ic_launcher))
.setContentText(message)
.build();
notification.flags |= Notification.FLAG_AUTO_CANCEL;
NotificationManager notificationManager = (NotificationManager) mCtx.getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(ID_SMALL_NOTIFICATION, notification);
}
//The method will return Bitmap from an image URL
private Bitmap getBitmapFromURL(String strURL) {
try {
URL url = new URL(strURL);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoInput(true);
connection.connect();
InputStream input = connection.getInputStream();
Bitmap myBitmap = BitmapFactory.decodeStream(input);
return myBitmap;
} catch (IOException e) {
e.printStackTrace();
return null;
}
}
}
我收到的数据采用以下格式：
Data Payload: {data={"image":null,"title":"Test123","message":"test123"}}
我完全无法弄清为什么不显示通知。如果有人可以帮助，那将是一个很大的帮助。