java - 如何在 android studio 的弹出窗口内添加滚动的 listView？

Question

我正在尝试制作一个 android 应用程序，该应用程序在单击按钮时会打开一个弹出窗口。并且，弹出窗口有四个带标题的 TextView 和 4 个带选项的 listView。但是，我无法在弹出窗口中添加 listView。单击按钮时会打开弹出窗口，但是当我添加 listView 及其适配器并尝试运行它时，应用程序会崩溃。我希望弹出窗口的布局与 news.xml 文件中的布局相同。

activity_main.xml

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fillViewport="true"
    android:visibility="visible"
    tools:context=".MainActivity">


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:id="@+id/linear">

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <Button
                android:id="@+id/news1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"

                android:layout_alignParentStart="true"
                android:layout_marginStart="15dp"
                android:text="@string/news" />


        </RelativeLayout>

    </LinearLayout>

</ScrollView>

MainActivity.java

package com.example.abina.popup;

import android.annotation.SuppressLint;
import android.content.Intent;
import android.os.Build;
import android.support.annotation.RequiresApi;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.PopupWindow;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;

import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import java.util.Random;

import static android.view.Gravity.NO_GRAVITY;

public class MainActivity extends AppCompatActivity  {

    private Button news1;
    private PopupWindow popupWindow;
    private LayoutInflater layoutInflater;
    private LinearLayout linearLayout;
    ListView lst;
    String [] local = {"asdf","Sgadf","adfhtr","trdbfa"};
    @RequiresApi(api = Build.VERSION_CODES.O)
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        //for listView 1
        lst = (ListView) findViewById(R.id.listView1);
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,local);
        lst.setAdapter(adapter);
        lst.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
                Toast.makeText(MainActivity.this,local[i],Toast.LENGTH_SHORT).show();
            }
        });

        linearLayout  = (LinearLayout) findViewById(R.id.linear);
        news1 = (Button) findViewById(R.id.news1);
        news1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                layoutInflater = (LayoutInflater) getApplication().getSystemService(LAYOUT_INFLATER_SERVICE);
                ViewGroup container  = (ViewGroup) layoutInflater.inflate(R.layout.news,null);

                popupWindow = new PopupWindow(container,800,1300,true);
                popupWindow.showAsDropDown(news1);
                container.setOnTouchListener(new View.OnTouchListener() {
                    @Override
                    public boolean onTouch(View view, MotionEvent motionEvent) {
                        popupWindow.dismiss();
                        return false;
                    }
                });
            }
        });

    }
}

新闻.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#ABEBC6">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_alignParentStart="true"
        android:layout_alignParentTop="true">

        <ListView
            android:id="@+id/listView1"
            android:layout_width="160dp"
            android:layout_height="184dp"
            android:layout_alignParentStart="true"
            android:layout_below="@+id/textView"
            android:layout_marginStart="13dp" />

        <TextView
            android:id="@+id/textView"
            android:layout_width="109dp"
            android:layout_height="33dp"
            android:layout_alignParentStart="true"
            android:layout_alignParentTop="true"
            android:layout_marginStart="30dp"
            android:layout_marginTop="20dp"
            android:text="@string/local" />

        <TextView
            android:id="@+id/textView2"
            android:layout_width="108dp"
            android:layout_height="33dp"
            android:layout_alignParentEnd="true"
            android:layout_alignTop="@+id/textView"
            android:layout_marginEnd="30dp"
            android:text="@string/national" />

        <ListView
            android:id="@+id/listView2"
            android:layout_width="160dp"
            android:layout_height="184dp"
            android:layout_alignParentEnd="true"
            android:layout_alignTop="@+id/listView1" />

    </RelativeLayout>

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginTop="260dp">

        <TextView
            android:id="@+id/textView3"
            android:layout_width="109dp"
            android:layout_height="33dp"
            android:layout_alignParentStart="true"
            android:layout_alignParentTop="true"
            android:layout_marginStart="30dp"
            android:layout_marginTop="20dp"
            android:text="@string/sports1" />

        <TextView
            android:id="@+id/textView4"
            android:layout_width="108dp"
            android:layout_height="33dp"
            android:layout_alignParentEnd="true"
            android:layout_alignTop="@+id/textView3"
            android:layout_marginEnd="43dp"
            android:text="@string/sports2" />

        <ListView
            android:id="@+id/listView3"
            android:layout_width="160dp"
            android:layout_height="184dp"
            android:layout_alignParentStart="true"
            android:layout_below="@+id/textView3"
            android:layout_marginStart="20dp" />

        <ListView
            android:id="@+id/listView4"
            android:layout_width="162dp"
            android:layout_height="184dp"
            android:layout_alignParentEnd="true"
            android:layout_below="@+id/textView4" />
    </RelativeLayout>
</RelativeLayout>

字符串.xml

<resources>
    <string name="app_name">Popup</string>
        <string name="news">Check Latest News!</string>
        <string name="local">Local News</string>
        <string name="national">National News</string>
        <string name="sports1">Sports One</string>
        <string name="sports2">Sports Two</string>


        <string-array name="local">
            <item>Star Ledger</item>
            <item>Ny Times</item>
            <item>The Record</item>
            <item>Trentorian</item>

        </string-array>

</resources>

标签： javaandroidandroid-studiolistview

Answer 1

在你的动作监听器中添加这个：

   news1.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
           PopupWindow popupWindow = new PopupWindow(getApplicationContext());

            ArrayList<String> sortList = new ArrayList<>();
            sortList.add("A to Z");
            sortList.add("Z to A");
            sortList.add("Any");
            sortList.add("Test");

            ArrayAdapter<String> adapter = new ArrayAdapter<>(getApplicationContext(), android.R.layout.simple_dropdown_item_1line,
                    sortList);
            ListView listViewSort = new ListView(getApplicationContext());
            listViewSort.setAdapter(adapter);

            // set on item selected
            listViewSort.setOnItemClickListener(new AdapterView.OnItemClickListener() {
                @Override
                public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
                    Toast.makeText(getApplicationContext(),
                            "You select in popup menu" + adapterView.getAdapter().getItem(i).toString(), Toast.LENGTH_LONG).show();
                    popupWindow.dismiss();
                }
            });

            popupWindow.setFocusable(true);
            popupWindow.setWidth(WindowManager.LayoutParams.FILL_PARENT);
            popupWindow.setHeight(WindowManager.LayoutParams.WRAP_CONTENT);

            popupWindow.setContentView(listViewSort);
            popupWindow.showAsDropDown(view, 0, 0);

            });
        }