在推送通知错误“notificationBuilder.setContentText（currentText）.setNumber（++ numMessages）;”中找不到符号
下面是我的代码，我正在使用cordova推送通知，我试图合并多个推送通知，但它给我错误，对于单一通知其工作，我无法找到出错的地方，请建议
package org.apache.cordova.firebase; import android.app.NotificationManager; import android.app.PendingIntent; import android.content.Context; import android.content.Intent; import android.content.pm.PackageManager; import android.media.RingtoneManager; import android.net.Uri; import android.os.Bundle; import android.support.v4.app.NotificationCompat; import android.util.Log; import android.text.TextUtils; import com.google.firebase.messaging.FirebaseMessagingService; import com.google.firebase.messaging.RemoteMessage; import java.util.Map; import java.util.Random; private void sendNotification(String id, String title, String messageBody, Map data, boolean showNotification) { Bundle bundle = new Bundle(); int notifyID = 1; for (String key : data.keySet()) { bundle.putString(key, data.get(key)); } if (showNotification) { Intent intent = new Intent(this, OnNotificationOpenReceiver.class); intent.putExtras(bundle); PendingIntent pendingIntent = PendingIntent.getBroadcast(this, id.hashCode(), intent, PendingIntent.FLAG_UPDATE_CURRENT); Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION); NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE); NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this) .setContentTitle(title) .setContentText(messageBody) .setAutoCancel(true) .setSound(defaultSoundUri); int numMessages = 0; //This line gives me error:error: cannot find symbol notificationBuilder.setContentText(currentText).setNumber(++numMessages); notificationManager.notify(notifyID, notificationBuilder.build()); } else { bundle.putBoolean("tap", false); FirebasePlugin.sendNotification(bundle); } } 看起来setContextText方法中使用的currentText未在代码中的任何位置实例化。