我到处寻找这个问题的解决方案,我能找到的唯一答案似乎是“不要把一个ListView放入一个ScrollView”。不过,我还没有看到任何真正的解释。我能找到的唯一原因似乎是谷歌认为你不应该这么做。我知道,所以我做了。

问题是,如何将ListView放到ScrollView中而不缩到最小高度?


当前回答

你创建了一个自定义的ListView,它是不可滚动的

public class NonScrollListView extends ListView {

    public NonScrollListView(Context context) {
        super(context);
    }
    public NonScrollListView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }
    public NonScrollListView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }
    @Override
    public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
            int heightMeasureSpec_custom = MeasureSpec.makeMeasureSpec(
                    Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);
            super.onMeasure(widthMeasureSpec, heightMeasureSpec_custom);
            ViewGroup.LayoutParams params = getLayoutParams();
            params.height = getMeasuredHeight();    
    }
}

在布局资源文件中

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

    <!-- com.Example Changed with your Package name -->

    <com.Example.NonScrollListView
        android:id="@+id/lv_nonscroll_list"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >
    </com.Example.NonScrollListView>

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/lv_nonscroll_list" >

        <!-- Your another layout in scroll view -->

    </RelativeLayout>
</RelativeLayout>

在Java文件中

创建一个customListview对象而不是ListView,如下所示: NonScrollListView non_scroll_list = (NonScrollListView) findViewById(R.id.lv_nonscroll_list);

其他回答

以前这是不可能的。但是随着新的Appcompat库和Design库的发布,这可以实现。

你只需要使用NestedScrollView https://developer.android.com/reference/android/support/v4/widget/NestedScrollView.html

我不知道它将与Listview工作与否,但与RecyclerView工作。

代码片段:

<android.support.v4.widget.NestedScrollView 
android:layout_width="match_parent"
android:layout_height="match_parent">

<android.support.v7.widget.RecyclerView
    android:layout_width="match_parent"
    android:layout_height="wrap_content" />

</android.support.v4.widget.NestedScrollView>

我们不能同时使用两个滚动。我们将获得ListView的总长度,并用总高度展开ListView。然后我们可以直接或使用线性布局在ScrollView中添加ListView,因为ScrollView直接有一个子。 在你的代码中复制setListViewHeightBasedOnChildren(lv)方法并展开listview,然后你可以在scrollview中使用listview。 \layout XML文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
 <ScrollView

        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
         android:background="#1D1D1D"
        android:orientation="vertical"
        android:scrollbars="none" >

        <LinearLayout
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:background="#1D1D1D"
            android:orientation="vertical" >

            <TextView
                android:layout_width="fill_parent"
                android:layout_height="40dip"
                android:background="#333"
                android:gravity="center_vertical"
                android:paddingLeft="8dip"
                android:text="First ListView"
                android:textColor="#C7C7C7"
                android:textSize="20sp" />

            <ListView
                android:id="@+id/first_listview"
                android:layout_width="260dp"
                android:layout_height="wrap_content"
                android:divider="#00000000"
               android:listSelector="#ff0000"
                android:scrollbars="none" />

               <TextView
                android:layout_width="fill_parent"
                android:layout_height="40dip"
                android:background="#333"
                android:gravity="center_vertical"
                android:paddingLeft="8dip"
                android:text="Second ListView"
                android:textColor="#C7C7C7"
                android:textSize="20sp" />

            <ListView
                android:id="@+id/secondList"
                android:layout_width="260dp"
                android:layout_height="wrap_content"
                android:divider="#00000000"
                android:listSelector="#ffcc00"
                android:scrollbars="none" />
  </LinearLayout>
  </ScrollView>

   </LinearLayout>

Activity类中的onCreate方法:

 import java.util.ArrayList;
  import android.app.Activity;
 import android.os.Bundle;
 import android.view.Menu;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.ArrayAdapter;
 import android.widget.ListAdapter;
  import android.widget.ListView;

   public class MainActivity extends Activity {

   @Override
   protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.listview_inside_scrollview);
    ListView list_first=(ListView) findViewById(R.id.first_listview);
    ListView list_second=(ListView) findViewById(R.id.secondList);
    ArrayList<String> list=new ArrayList<String>();
    for(int x=0;x<30;x++)
    {
        list.add("Item "+x);
    }

       ArrayAdapter<String> adapter=new ArrayAdapter<String>(getApplicationContext(), 
          android.R.layout.simple_list_item_1,list);               
      list_first.setAdapter(adapter);

     setListViewHeightBasedOnChildren(list_first);

      list_second.setAdapter(adapter);

    setListViewHeightBasedOnChildren(list_second);
   }



   public static void setListViewHeightBasedOnChildren(ListView listView) {
    ListAdapter listAdapter = listView.getAdapter();
    if (listAdapter == null) {
        // pre-condition
        return;
    }

    int totalHeight = 0;
    for (int i = 0; i < listAdapter.getCount(); i++) {
        View listItem = listAdapter.getView(i, null, listView);
        listItem.measure(0, 0);
        totalHeight += listItem.getMeasuredHeight();
    }

    ViewGroup.LayoutParams params = listView.getLayoutParams();
    params.height = totalHeight
            + (listView.getDividerHeight() * (listAdapter.getCount() - 1));
    listView.setLayoutParams(params);
      }

它有一个内置的设置。在ScrollView中:

android:fillViewport="true"

在Java中,

mScrollView.setFillViewport(true);

罗曼·盖伊在这里有深入的解释:http://www.curious-creature.org/2010/08/15/scrollviews-handy-trick/

这是我的解决方案。我对Android平台相当陌生,我确信这有点笨拙,特别是在直接调用.measure和设置LayoutParams的部分。直接使用Height属性,但它是有效的。

你所要做的就是调用Utility.setListViewHeightBasedOnChildren(yourListView),它将被调整大小,以完全适应其项目的高度。

public class Utility {
    public static void setListViewHeightBasedOnChildren(ListView listView) {
        ListAdapter listAdapter = listView.getAdapter();
        if (listAdapter == null) {
            // pre-condition
            return;
        }

        int totalHeight = listView.getPaddingTop() + listView.getPaddingBottom();

        for (int i = 0; i < listAdapter.getCount(); i++) {
            View listItem = listAdapter.getView(i, null, listView);
            if (listItem instanceof ViewGroup) {
                listItem.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
             }

             listItem.measure(0, 0);
             totalHeight += listItem.getMeasuredHeight();
        }

        ViewGroup.LayoutParams params = listView.getLayoutParams();
        params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1));
        listView.setLayoutParams(params);
    }
}

这肯定会工作............ 你必须替换你的<ScrollView ></ScrollView>在布局XML文件与这个自定义ScrollView像<com.tmd.utils。VerticalScrollview > </com.tmd.utils。VerticalScrollview >

package com.tmd.utils;

import android.content.Context;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.widget.ScrollView;

public class VerticalScrollview extends ScrollView{

    public VerticalScrollview(Context context) {
        super(context);
    }

     public VerticalScrollview(Context context, AttributeSet attrs) {
            super(context, attrs);
        }

        public VerticalScrollview(Context context, AttributeSet attrs, int defStyle) {
            super(context, attrs, defStyle);
        }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        final int action = ev.getAction();
        switch (action)
        {
            case MotionEvent.ACTION_DOWN:
                    Log.i("VerticalScrollview", "onInterceptTouchEvent: DOWN super false" );
                    super.onTouchEvent(ev);
                    break;

            case MotionEvent.ACTION_MOVE:
                    return false; // redirect MotionEvents to ourself

            case MotionEvent.ACTION_CANCEL:
                    Log.i("VerticalScrollview", "onInterceptTouchEvent: CANCEL super false" );
                    super.onTouchEvent(ev);
                    break;

            case MotionEvent.ACTION_UP:
                    Log.i("VerticalScrollview", "onInterceptTouchEvent: UP super false" );
                    return false;

            default: Log.i("VerticalScrollview", "onInterceptTouchEvent: " + action ); break;
        }

        return false;
    }

    @Override
    public boolean onTouchEvent(MotionEvent ev) {
        super.onTouchEvent(ev);
        Log.i("VerticalScrollview", "onTouchEvent. action: " + ev.getAction() );
         return true;
    }
}