方法1、网上很多流行的方法，先测量listview或gridview的高度，然后再scrollview中设为定值
- public static void setListViewHeightBasedOnChildren(ListView listView) {
- ListAdapter listAdapter = listView.getAdapter();
- if (listAdapter == null) {
- listView.setVisibility(View.GONE);
- 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);
- }
- 这个方法好像只能测量list item为linearlayout为根布局的情况（因为其他的Layout(如RelativeLayout)没有重写onMeasure()，所以会在onMeasure()时抛出异常），比较容易才出现测量不准，和一些未知错误。
方法2、网上流行的另一种方法
1.在ScrollView中添加一属性 android:fillViewport="true" ，这样就可以让ListView全屏显示了
2.指定ListView的高度 android:layout_height="420dp" ;
方法3、重写listview或gridview（个人认为最好的方法，也是我一直在用的）
- package com.caiying.idota.view;
-
- import android.content.Context;
- import android.util.AttributeSet;
- import android.widget.GridView;
-
- public class MultiGridView extends GridView {
- public MultiGridView(Context context, AttributeSet attrs) {
- super(context, attrs);
- }
-
- public MultiGridView(Context context) {
- super(context);
- }
-
- public MultiGridView(Context context, AttributeSet attrs, int defStyle) {
- super(context, attrs, defStyle);
- }
-
- @Override
- public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
-
- int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,
- MeasureSpec.AT_MOST);
- super.onMeasure(widthMeasureSpec, expandSpec);
- }
-
- }
- package com.caiying.idota.view;
-
- import android.content.Context;
- import android.util.AttributeSet;
- import android.widget.ListView;
-
- public class MultiListView extends ListView {
- public MultiListView(Context context, AttributeSet attrs) {
- super(context, attrs);
- }
-
- public MultiListView(Context context) {
- super(context);
- }
-
- public MultiListView(Context context, AttributeSet attrs, int defStyle) {
- super(context, attrs, defStyle);
- }
-
- @Override
- public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
-
- int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,
- MeasureSpec.AT_MOST);
- super.onMeasure(widthMeasureSpec, expandSpec);
- }
-
- }
【Android】ScrollView和ListView、GridView冲突(转)
原文：http://www.cnblogs.com/sddbk/p/5230436.html
