使用这个ListView对我有用

   package net.londatiga.android.widget;

      import android.util.AttributeSet;
      import android.view.ViewGroup;
      import android.widget.ListView;
      import android.content.Context;

   public class ExpandableHeightListView extends ListView
      {

    boolean expanded = false;

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

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

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

public boolean isExpanded()
{
    return expanded;
}

@Override
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
{
    // HACK! TAKE THAT ANDROID!
    if (isExpanded())
    {
        // Calculate entire height by providing a very large height hint.
        // But do not use the highest 2 bits of this integer; those are
        // reserved for the MeasureSpec mode.
        int expandSpec = MeasureSpec.makeMeasureSpec(
                Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);
        super.onMeasure(widthMeasureSpec, expandSpec);

        ViewGroup.LayoutParams params = getLayoutParams();
        params.height = getMeasuredHeight();
    }
    else
    {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    }
}

public void setExpanded(boolean expanded)
{
    this.expanded = expanded;
}
}

在XML中

            <com.pakagename.ExpandableHeightListView
                android:id="@+id/expandableHeightListView"
                android:layout_width="match_parent"
                android:layout_height="wrap_content" >
            </com.Example.ExpandableHeightListView>

在MainActivity中

  ExpandableHeightListView listView = new ExpandableHeightListView(this);
    listview=(ExpandableHeightListView)findViewById(R.id.expandableHeightListView);
   listView.setAdapter(adapter); //set your adaper
   listView.setExpanded(true);

参考这篇文章了解更多信息，也知道如何保持网格视图在滚动视图

如果你只是在代码中实现了一个ListView，这段代码将解决你的问题。

如果你使用RelativeLayout作为ListView子视图，那么这段代码将返回一个NullPointerException。测量(0,0);，因为相对布局。解决办法是把Relativelayout放在LinearLayout里面，它会工作得很好。

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);
    listView.requestLayout();
}

在将adapter赋值给listview之后调用这个函数

public static void setListViewHeightBasedOnChildren
            (ListView listView) {
        ListAdapter listAdapter = listView.getAdapter();
        if (listAdapter == null) return;

        int desiredWidth = View.MeasureSpec.makeMeasureSpec(listView.getWidth(),
                View.MeasureSpec.UNSPECIFIED);
        int totalHeight = 0;
        View view = null;
        for (int i = 0; i < listAdapter.getCount(); i++) {
            view = listAdapter.getView(i, view, listView);
            if (i == 0) view.setLayoutParams(new
                    ViewGroup.LayoutParams(desiredWidth,
                    ViewGroup.LayoutParams.WRAP_CONTENT));

            view.measure(desiredWidth, View.MeasureSpec.UNSPECIFIED);
            totalHeight += view.getMeasuredHeight();
        }

        ViewGroup.LayoutParams params = listView.getLayoutParams();

        params.height = totalHeight + (listView.getDividerHeight() *
                (listAdapter.getCount() - 1));

        listView.setLayoutParams(params);
        listView.requestLayout();
    } 

我有同样的问题已经很长时间了。然后我找到了一个适合我的解决方案。 添加一个ListViewHelper java类。下面是ListViewHelper.java的代码

package com.molescope;

import android.view.View;
import android.view.ViewGroup;
import android.widget.ListAdapter;
import android.widget.ListView;

public class ListViewHelper {
    public static void getListViewSize(ListView listView){
        ListAdapter adapter = listView.getAdapter();
        if(adapter!=null){
            int totalHeight = 0;

            //setting list adapter in loop tp get final size
            for (int i=0; i<adapter.getCount(); i++){
                View listItem = adapter.getView(i, null, listView);
                listItem.measure(0,0);
                totalHeight += listItem.getMeasuredHeight();
            }
            //setting listview items in adapter
            ViewGroup.LayoutParams params = listView.getLayoutParams();
            params.height = totalHeight + (listView.getDividerHeight() * 
    (adapter.getCount()-1));
            listView.setLayoutParams(params);

        }else{
            return;
        }
    }
}

在添加这个java文件之后，在你的代码中，无论你把适配器设置为listview，就在这一行之后添加下面的代码:

  ListView myList=(ListView) findViewById(R.id.listView);
  myList.setAdapter(new ArrayAdapter<String>. 
  (this,android.R.layout.simple_list_item_1, listview_array));
  ListViewHelper.getListViewSize(myList);

原谅我的英语。

我的要求是在ScrollView中包含大小相等的项的ListView。我尝试了这里列出的其他一些解决方案，似乎没有一个能正确地调整ListView的大小(要么空间太小，要么太多)。以下是对我有效的方法:

    public static void expandListViewHeight(ListView listView) {
    ListAdapter listAdapter = listView.getAdapter();
    if (listAdapter == null)
        return;

    ViewGroup.LayoutParams params = listView.getLayoutParams();
    listView.measure(0, 0);
    params.height = listView.getMeasuredHeight() * listAdapter.getCount() + (listView.getDividerHeight() * (listAdapter.getCount() - 1));
    listView.setLayoutParams(params);
}

希望这能帮助到一些人。

I'll leave it here in case anyone will face the same issue. I had to put a ListView inside a ScrollView. ListView with header was not an option by a number of reasons. Neither was an option to use LinearLayout instead of ListView. So I followed the accepted solution, but it didn't work because items in the list had complex layout with multiple rows and each listview item was of variable height. Height was measured not properly. The solution was to measure each item inside ListView Adapter's getView() method.

@Override
public View getView(int position, View view, ViewGroup parent) {
    ViewHolder holder;
    if (view == null) {
        . . .
        view.setTag(holder);
    } else holder = (ViewHolder)view.getTag();
    . . .

    // measure ListView item (to solve 'ListView inside ScrollView' problem)
    view.measure(View.MeasureSpec.makeMeasureSpec(
                    View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED),
            View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
    return view;
}