Question

我正在使用回收视图来显示用户的最新输入。当我单击编辑文本时，旧输入向上移动并且键盘显示在应用程序中。但是当我输入下一个条目时，我必须最小化键盘才能看到新条目。它没有向上移动 - 这是更新回收视图时的预期行为。

阶段 1)

旧条目
旧条目

第 2 阶段）点击编辑文本以创建新条目

旧条目
旧条目
键盘

阶段 3) 输入新文本

旧条目
旧条目
键盘

阶段 4) 键盘隐藏/最小化

旧条目
旧条目
新条目

布局从最后开始堆叠......我可以更改什么才能使其工作？

AndroidManifest 设置

    <activity
        android:name=".Contacts.ui.ContactDetailsHome"
        android:configChanges="orientation"
        android:parentActivityName=".MainActivity"
        android:screenOrientation="portrait"
        android:windowSoftInputMode="adjustResize" />

片段代码

class ContactRelationship : Fragment() {

companion object {
    @JvmStatic
    fun start(context: Context, contact: Contact?, isEdit: Boolean) {
        val starter = Intent(context, ContactRelationship::class.java)
            .putExtra("contact", contact as Serializable)
            .putExtra("Edit", isEdit)
        context.startActivity(starter)
    }
}

private val _updatesLiveData = MutableLiveData<ArrayList<ContUPDt>>()
private val updatesLiveData: LiveData<ArrayList<ContUPDt>> = _updatesLiveData
var firebaseUser: FirebaseUser? = null //the used id of the user using the app
var userLookupKey: String = ""
private lateinit var contact: Contact
var mupdateList: List<ContUPDt>? = null
var contUpdateAdapter: ContUpdateAdapter? = null
var reference: DatabaseReference? = null
lateinit var rvContRelUpdate: RecyclerView
private lateinit var progressBar: ProgressDialog

override fun onCreateView(
    inflater: LayoutInflater, container: ViewGroup?,
    savedInstanceState: Bundle?
): View {
    // Inflate the layout for this fragment
    val view: View =
        inflater.inflate(R.layout.fragment_view_contact_relationship, container, false)

    progressBar = ProgressDialog(activity)
    progressBar.setCancelable(false)
    firebaseUser = FirebaseAuth.getInstance().currentUser

    rvContRelUpdate = view.findViewById(R.id.rvContRelUpdate)
    rvContRelUpdate.setHasFixedSize(true)
    val linearLayoutManager = LinearLayoutManager(activity)
    linearLayoutManager.stackFromEnd = true
    rvContRelUpdate.layoutManager = linearLayoutManager

    return view
}

override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
    super.onViewCreated(view, savedInstanceState)

    contact = (activity?.intent?.getSerializableExtra("contact") as Contact)
    //assigning it to fields to be displayed
    userLookupKey = contact.lookupKey
    val contId = contact.id

    //get updates
    retrieveUpdates(userLookupKey)

    //Implementing Send Update
    send_update_btn.setOnClickListener {
        val updateTxt = text_messageact.text.toString()
        if (updateTxt == "") {
            Toast.makeText(activity, "The update is empty.", Toast.LENGTH_LONG)
                .show()
        } else {
            sendMessageToUser(userLookupKey, contId, updateTxt)
        }
        text_messageact.setText("")
    }

private fun sendMessageToUser(userLookupKey: String, contId: String, updateMsg: String) {

    val currentCalendar = Calendar.getInstance()
    //creating object in DB
    val db = activity?.let { AppDatabase.getDatabase(it) }
    val ev = ContUPDt(
        0,
        userLookupKey,
        contId,
        currentCalendar.timeInMillis,
        updateMsg,
        null,
        "Update"
    )
    db!!.ContUpdateDao().addcontUpdate(ev)
}

private fun retrieveUpdates(userLookupKey: String) {

    val mupdateList = ArrayList<ContUPDt>()
    val db = AppDatabase.getDatabase(requireActivity())
    db.ContUpdateDao().getcontUpdate(userLookupKey).observe(viewLifecycleOwner, Observer {
        val contUpdt = it
        mupdateList.clear()
        for (i in contUpdt) {
            mupdateList.add(i)
        }
    })
    contUpdateAdapter = ContUpdateAdapter(requireActivity(), mupdateList)
    rvContRelUpdate.adapter = contUpdateAdapter
}

}

适配器代码

class ContUpdateAdapter(
mContext: Context,
    mupdateList: List<ContUPDt>
) : RecyclerView.Adapter<ContUpdateAdapter.ViewHolder?>() {
    private val mContext: Context
    private val mupdateList: List<ContUPDt>

init {
    this.mContext = mContext
    this.mupdateList = mupdateList
}

class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
    var updateDTTime: TextView? = null
    var updateMessage: TextView? = null
    var updateType: TextView? = null

    init {
        updateDTTime = itemView.findViewById(R.id.updateDTTime)
        updateMessage = itemView.findViewById(R.id.updateMessage)
        updateType = itemView.findViewById(R.id.updateType)
    }
}

override fun onCreateViewHolder(
    parent: ViewGroup,
    position: Int
): ViewHolder {
    return ViewHolder (
        LayoutInflater.from(parent.context)
            .inflate(R.layout.contactupdate, parent, false)
    )
}

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

    val contUpdte: ContUPDt = mupdateList[position]
    val formatter = SimpleDateFormat(" E, HH:MM a, dd MMM yyyy", Locale.getDefault())
    val updatetime = formatter.format(contUpdte.timestamp)

    holder.updateDTTime!!.text = updatetime
    holder.updateMessage!!.text = contUpdte.update
    holder.updateType!!.text = contUpdte.actType
}

override fun getItemCount(): Int {
    return mupdateList.size
}

}

Answer 1

添加新项目后只需将 RecyclerView 滚动到最后位置： rvContRelUpdate.scrollToPosition(contUpdateAdapter.itemCount - 1)

键盘输入隐藏回收视图适配器中的新条目

1 个答案: