我正在尝试在应用中创建类似功能，类似功能已在运行（递增和递减）。我的问题是我需要再次重新进入活动，以查看类似的新值。但我的实时数据库中的值已经更改，但在应用程序视图中，它不会递增或递减（需要重新输入才能查看新值）。如何在单击按钮时刷新应用中的值？代码如下

//set the likes number on start
likes.text = myPlants.likes.toString();

//When like is clicked
bulbLike.setOnCheckListener(object : OnCheckListener {
    override fun onChecked(view: ExpressView?) {
        bulbLike(myPlants.plantId,currentUser!!.uid)

        //When i remove this the values dosent change
        val rootRef = FirebaseDatabase.getInstance().reference
        val likeRef = rootRef.child("plants").child(myPlants.plantId).child("likes")
        likeRef.get().addOnCompleteListener(OnCompleteListener<DataSnapshot?> { task ->
            if (task.isSuccessful) {
                val value: Long? = task.result.getValue(Long::class.java)
                likes.text = value.toString()
            } else {
                Log.d("TAG", "Error") //Don't ignore potential errors!
            }
        })
    }

    override fun onUnChecked(view: ExpressView?) {
        bulbDislike(myPlants.plantId,currentUser!!.uid)

        //When i remove this the values dosent change
        val rootRef = FirebaseDatabase.getInstance().reference
        val likeRef = rootRef.child("plants").child(myPlants.plantId).child("likes")
        likeRef.get().addOnCompleteListener(OnCompleteListener<DataSnapshot?> { task ->
            if (task.isSuccessful) {
                val value: Long? = task.result.getValue(Long::class.java)
                likes.text = value.toString()
            } else {
                Log.d("TAG", "Error") //Don't ignore potential errors!
            }
        })

    }
})

这一个工作它改变值但是它改变为1或-1
这是方法还是喜欢和不喜欢

private fun bulbLike(plantId: String, userId: String) {

        val dPlant: DatabaseReference = FirebaseDatabase.getInstance().reference
        dPlant.child("plants").child(plantId).child("likes").setValue(ServerValue.increment(1))
        dPlant.child("plants").child(plantId).child("userLikes").child(userId).child("status").setValue("Liked")
    }

    private fun bulbDislike(plantId: String, userId: String) {

        val dPlant: DatabaseReference = FirebaseDatabase.getInstance().reference
        dPlant.child("plants").child(plantId).child("likes").setValue(ServerValue.increment(-1))
        dPlant.child("plants").child(plantId).child("userLikes").child(userId).child("status").setValue("Dislike")

    }