java代码如下 :

public class MainActivity extends Activity {

private ListView listView;   
@Override   
protected void onCreate(Bundle savedInstanceState) {   
    super.onCreate(savedInstanceState);   
    setContentView(R.layout.activity_main);   
    listView = (ListView) findViewById(R.id.listView1);   
    String[] adapterData = new String[] { "Afghanistan", "Albania",… … "Bosnia"};   
    listView.setAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,adapterData));   




        以下代码 是 ScrollView嵌套ListView

    setListViewHeightBasedOnChildren(listView);  

}  


public void setListViewHeightBasedOnChildren(ListView listView) {   
    // 获取ListView对应的Adapter   
    ListAdapter listAdapter = listView.getAdapter();   
    if (listAdapter == null) {   
        return;   
    }   

    int totalHeight = 0;   
    for (int i = 0, len = listAdapter.getCount(); i < len; i++) {   
        // listAdapter.getCount()返回数据项的数目   
        View listItem = listAdapter.getView(i, null, listView);   
        // 计算子项View 的宽高   
        listItem.measure(0, 0);    
        // 统计所有子项的总高度   
        totalHeight += listItem.getMeasuredHeight();    
    }   

    ViewGroup.LayoutParams params = listView.getLayoutParams();   
    params.height = totalHeight+ (listView.getDividerHeight() * (listAdapter.getCount() - 1));   
    // listView.getDividerHeight()获取子项间分隔符占用的高度   
    // params.height最后得到整个ListView完整显示需要的高度   
    listView.setLayoutParams(params);   
}   

}

E1F656025BF0570F80C5B829568E5859.jpg

布局代码：

<?xml version="1.0" encoding="utf-8"?>
< LinearLayout 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:orientation="vertical"
tools:context="com.zjq.logindemo.activity.ListNewUserActivity">

<android.support.v7.widget.Toolbar
    android:background="@color/colorDefaultBule"
    android:layout_marginLeft="0dp"
    android:layout_marginRight="0dp"
    android:layout_width="match_parent"
    android:layout_height="50dp">

    <TextView
        android:id="@+id/tv_fanhui2"
        android:onClick="onClick"
        android:layout_gravity="left"
        android:textSize="18sp"
        android:background="@drawable/ic_return"
        android:textColor="@color/colorWhite"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <TextView
        android:id="@+id/tv_fanhui3"
        android:onClick="onClick"
        android:textSize="18sp"
        android:text="返回"
        android:textColor="@color/colorWhite"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <TextView
        android:layout_gravity="center"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="选择国家和地区"
        android:textColor="@color/colorWhite"
        android:textStyle="bold"
        android:textSize="18sp"/>

</android.support.v7.widget.Toolbar>

<LinearLayout
    android:layout_marginLeft="10dp"
    android:layout_marginRight="10dp"
    android:layout_width="match_parent"
    android:orientation="horizontal"
    android:layout_height="32dp"
    android:layout_marginTop="10dp">

    <Button
        android:id="@+id/btn_sousuo"
        android:layout_width="match_parent"
        android:layout_height="48dp"
        android:layout_gravity="center"
        android:background="@drawable/shape1"
        android:text="搜索" />
    <!--
            <TextView
                android:layout_marginRight="0dp"
                android:id="@+id/textView2"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="right"
                android:background="@drawable/ic_sousuox" />
                -->
</LinearLayout>


<LinearLayout
    android:layout_marginTop="10dp"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <TextView
        android:layout_gravity="center"
        android:text="    常用地区"
        android:textSize="12sp"
        android:gravity="center_vertical|left"
        android:background="@drawable/shape1"
        android:layout_width="match_parent"
        android:layout_height="28dp" />
</LinearLayout>


<ScrollView
      android:layout_width="match_parent"
      android:layout_height="match_parent">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent" >

    <ListView
        android:id="@+id/list_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

    </ListView>

   </LinearLayout>   </ScrollView>  </LinearLayout>