android - fragment 中的自定义对话框 fragment

Question

我创建了约束布局，并从片段中调用对话框片段。但是，当我单击按钮时，它所做的只是使屏幕褪色，但是看不到任何对话框或布局。

这是我的对话框片段代码:

package com.example.atry.MakeComplaint

import android.app.AlertDialog
import android.app.Dialog
import android.content.Context
import android.net.Uri
import android.os.Bundle
import android.text.TextUtils
import android.util.Log
import androidx.fragment.app.Fragment
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.Button
import android.widget.EditText
import androidx.appcompat.app.AppCompatActivity
import androidx.fragment.app.DialogFragment

import com.example.atry.R


class PopupDialog : DialogFragment() {



    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {



        val builder = AlertDialog.Builder(activity)


        return builder.create()

    }

    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {

        val view = inflater.inflate(R.layout.existing_complaint_popup, container, false)

        val yes = view.findViewById(R.id.YES) as Button
        val no = view.findViewById(R.id.NO) as Button

        // set onclicklistener
        yes.setOnClickListener(View.OnClickListener {
            // I want the dialog to close at this point
            dismiss()
            backFragment()

        })

        // set onclicklistener
        no.setOnClickListener(View.OnClickListener {
            // I want the dialog to close at this point
            dismiss()
            descriptionFragment()

        })

        return view
    }




    private fun backFragment() {
        val manager = (context as AppCompatActivity).supportFragmentManager
        manager.popBackStackImmediate()


    }

    private fun descriptionFragment() {
        val dFragment= Category_Description()
        val lFragment = LocationFragment()
        val manager = (context as AppCompatActivity).supportFragmentManager
        val transaction =  manager.beginTransaction()
        transaction.replace(
            R.id.location_screen,
            dFragment
        ) // give your fragment container id in first parameter
        transaction.show(dFragment)
        transaction.hide(lFragment)
        transaction.isAddToBackStackAllowed
        transaction.addToBackStack(lFragment.fragmentManager.toString())  // if written, this transaction will be added to backstack
        transaction.commit()
    }







}

这是我从中调用对话框的片段中的代码:

 //opening up the checkExisting popup

    private fun existPopup(){
        val fm = activity!!.supportFragmentManager
        val dialog = PopupDialog() // creating new object
        dialog.show(fm, "dialog")
    }

这是我的布局:

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/container"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools">

    <LinearLayout
            android:id="@+id/textViewComplaint"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_above="@+id/complainDescription"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintBottom_toTopOf="@id/textViewComplaint"
            >



        <TextView
                android:id="@+id/headingComplain"
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_alignParentTop="true"
                android:layout_marginBottom="10dp"
                android:layout_weight="6"
                android:fontFamily="@font/pathway_gothic_one"
                android:gravity="center"
                android:padding="10dp"
                android:text="Is this the complaint you're looking for?"
                android:textColor="@color/white"
                android:textSize="30sp"
                />


    </LinearLayout>

    <RelativeLayout
            android:id="@+id/fazool"
            android:layout_width="match_parent"
            android:layout_height="200dp"
            android:layout_alignParentBottom="true"
            android:background="@color/grey"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintBottom_toBottomOf="parent" />
    <FrameLayout
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_below="@+id/textViewComplaint"
            android:background="@drawable/bottom_nav_border"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/textViewComplaint"
            app:layout_constraintBottom_toBottomOf="parent"
            >
        <ScrollView
                android:layout_height="wrap_content"
                android:layout_width = "match_parent">


            <include layout="@layout/existing_complaint_popup_inner"/>
        </ScrollView>

    </FrameLayout>



</androidx.constraintlayout.widget.ConstraintLayout>

Answer 1

多数民众赞成在我的自定义通知对话框代码。我认为那很容易清楚。我不知道为什么要使用片段分割自定义对话框，但是可以使用我的方式。

 val mDialogView = LayoutInflater.from(this).inflate(R.layout.permission_for_notification, null)
        //AlertDialogBuilder
        val mBuilder = AlertDialog
            .Builder(this)
            .setView(mDialogView)
        //show dialog
        val  mAlertDialog = mBuilder.show()

 mAlertDialog.window.setLayout(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT)


        mDialogView.notification_accept_button.setOnClickListener {

            mAlertDialog.dismiss()
        }

        //cancel button click of custom layout
        mDialogView.notification_reject_button.setOnClickListener {

            mAlertDialog.dismiss()
        }