如何获得通知徽章计数器来计算收到的点赞数量？

问题描述

我正在使用firebase数据库，并且将一个孩子添加到我的通知片段时，我希望计数器对其进行计数。 Notification fragment here

包supgro.com.Controller.Service

MainActivity类：AppCompatActivity（）{

private val onNavigationItemSelectedListener = BottomNavigationView.OnNavigationItemSelectedListener { item ->
        when (item.itemId) {
            R.id.nav_home -> {

                moveToFragment(HomeFragment())
                return@OnNavigationItemSelectedListener true

            }
            R.id.nav_search -> {
                moveToFragment(SearchFragment())
                return@OnNavigationItemSelectedListener true



            }
            R.id.nav_add -> {
                moveToFragment(PostSelectionFragment())
               
                return@OnNavigationItemSelectedListener true

            }
            R.id.nav_notifications -> {
                moveToFragment(NotificationsFragment())
                return@OnNavigationItemSelectedListener true


            }
            R.id.nav_profile -> {

                 moveToFragment(ProfileFragment())
                return@OnNavigationItemSelectedListener true


            }
        }
  

false

}

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)

    firebaseUser = FirebaseAuth.getInstance().currentUser

   

val navView：BottomNavigationView = findViewById（R.id.bottom_nav_view）

navView.setOnNavigationItemSelectedListener（onNavigationItemSelectedListener）

    navView.getOrCreateBadge(R.id.nav_notifications).apply{

        number = 1
        isVisible = true
    }

    moveToFragment(HomeFragment())



}

私人乐趣moveToFragment（片段：片段）{

val fragmentTrans = supportFragmentManager.beginTransaction()
fragmentTrans.replace(R.id.fragment_container,fragment)
fragmentTrans.commit()

} }

通知适配器

包supgro.com.Controller.Adapter

class NotificationAdapter（val mContext：Context，val mNotification：List）：RecyclerView.Adapter （）{

private val onNavigationView: Int = R.id.nav_notifications
override fun onCreateViewHolder(parent: ViewGroup,viewType: Int): Holder {
    val view = LayoutInflater.from(mContext).inflate(R.layout.notifications_item_layout,parent,false)
    return Holder(view)

}



override fun onBindViewHolder(holder: Holder,position: Int) {


    val notification = mNotification[position]

    if (notification.getText().equals("started supporting you")){

        holder.commentText.text = "started supporting you"

    }else if (notification.getText().equals("liked your post")){

        holder.commentText.text = "liked your post"

    }else if (notification.getText().contains("commented:")){

        holder.commentText.text = notification.getText().replace("commented:","commented: ")

    }else if(notification.getText().equals("saved your post")){

        holder.commentText.text = "saved your post!"
    }else{

        holder.commentText.text = notification.getText()

    }



   userInfo(holder.profileImage,holder.userName,notification.getUserId())

    if (notification.isIsPost())
    {
        holder.postImage.visibility = View.VISIBLE
        getPostImage(holder.postImage,notification.getPostid())
    }
    else
    {
        holder.postImage.visibility = View.GONE
    }

   holder.itemView.setOnClickListener{
       if (notification.isIsPost()){

            val editor = mContext.getSharedPreferences("PREFS",Context.MODE_PRIVATE).edit()
            editor.putString("postId",notification.getPostid())

            editor.apply()

            (mContext as FragmentActivity).getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container,PostDetailsFragment()).commit()
        }else{

            val editor = mContext.getSharedPreferences("PREFS",Context.MODE_PRIVATE).edit()

            editor.putString("profileId",notification.getUserId())

            editor.apply()

            (mContext as FragmentActivity).getSupportFragmentManager()
                .beginTransaction()
                .replace(R.id.fragment_container,ProfileFragment()).commit()

        }
    }


}

override fun getItemCount(): Int {
    return mNotification.size

}

inner class Holder(@NonNull itemView: View) : RecyclerView.ViewHolder(itemView){

    var profileImage: CircleImageView = itemView.findViewById(R.id.notification_profile_image)
    var postImage: ImageView = itemView.findViewById(R.id.notification_post_image)
    var userName: TextView = itemView.findViewById(R.id.username_notification)
    var commentText: TextView = itemView.findViewById(R.id.comment_notification)


}

private fun userInfo(imageView: ImageView,userName: TextView,publisherId: String){

    val userRef = FirebaseDatabase.getInstance().getReference()
        .child("username")
        .child(publisherId)
    userRef.addValueEventListener(object: ValueEventListener {

        override fun onDataChange(p0: DataSnapshot) {



            if (p0.exists()){
                val user = p0.getValue<User>(User::class.java)

                
                Glide.with(mContext).load(user!!.getImage()).placeholder(R.drawable.add_profile_image).into(imageView)
                userName.text = user!!.getUsername()

            }

        }

        override fun onCancelled(p0: DatabaseError) {
            TODO("Not yet implemented")
        }
    })
}

private fun getPostImage(imageView: ImageView,postID: String){

    val postRef = FirebaseDatabase.getInstance().reference
        .child("Posts")
        .child(postID)

    postRef.addValueEventListener(object: ValueEventListener {

        override fun onDataChange(p0: DataSnapshot) {



            if (p0.exists()){

                val post = p0.getValue<Post>(Post::class.java)

                Glide.with(mContext).load(post!!.getPostImage()).placeholder(R.drawable.add_profile_image).into(imageView)

            }

        }

        override fun onCancelled(p0: DatabaseError) {
        }
    })
}

}

解决方法

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