![完美解决ListView 与 ScrollView 共存问题 完美解决ListView 与 ScrollView 共存问题](https://image.shishitao.com:8440/aHR0cHM6Ly9ia3FzaW1nLmlrYWZhbi5jb20vdXBsb2FkL2NoYXRncHQtcy5wbmc%2FIQ%3D%3D.png?!?w=700&webp=1)
1:首先设置ListView的高度,在setAdapter之后调用此方法。
public static void setListViewHeightBasedOnChildren(ListView listView) {
ListAdapter listAdapter = listView.getAdapter();
if (listAdapter == null) {
return;
} int totalHeight = 0;
int len = listAdapter.getCount();
for (int i = 0; i < len; i++) {
View listItem = listAdapter.getView(i, null, listView);
listItem.measure(0, 0); //计算子项View 的宽高
totalHeight += listItem.getMeasuredHeight(); //统计所有子项的总高度
} ViewGroup.LayoutParams params = listView.getLayoutParams(); params.height =totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1)); listView.setLayoutParams(params);
}
2:如果ListView中的数据是单行的以上代码没有问题,如果Item行数不固定则要重写ListView的onMeasure方法重新计算每个Item的高度。
public class WListView extends ListView{ public WListView(Context context) {
super(context);
// TODO Auto-generated constructor stub
} public WListView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
// TODO Auto-generated constructor stub
} public WListView(Context context, AttributeSet attrs) {
super(context, attrs);
// TODO Auto-generated constructor stub
} public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
//根据模式计算每个child的高度和宽度
int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,
MeasureSpec.AT_MOST);
super.onMeasure(widthMeasureSpec, expandSpec);
}
}
这样就解决了。
在使用的时候通过多态的方式进行。例如:
(1) activity_xxsd.xml
<com.wzh.view.WListView
android:background="@drawable/xxsd_content_bg"
android:id="@+id/lvXxsdZxtzTitles"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
(2) XxsdActivity.java
private ListView lvXxsdZxtzTitles = null;
...
lvXxsdZxtzTitles=(WListView)findViewById(R.id.lvXxsdZxtzTitles);