ScrollView和listView冲突解决

public class MyListView extends ListView{

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

@Override
public boolean onTouchEvent(MotionEvent ev) {

switch (ev.getAction()) {
case MotionEvent.ACTION_DOWN:
requestDisallowInterceptTouchEvent(true);

break;
case MotionEvent.ACTION_UP:
requestDisallowInterceptTouchEvent(false);

break;
}
return super.onTouchEvent(ev);
}
}

这里写代码片

<com.lix.shuobowen.scrolllistview.MyListView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/lv"/>

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;

public class MainActivity extends AppCompatActivity {

private MyListView lv;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

//获取控件对象
lv = (MyListView)findViewById(R.id.lv);

initData();
//重点
setListViewHeightBasedOnChildren(lv);

}

private void initData() {

String[] names = new String[100];
for (int i = 0; i < names.length; i++) {
names[i] = "小白学Android"+i;
}

//创建适配器,展示数据
lv.setAdapter(new ArrayAdapter<String>(MainActivity.this,android.R.layout.simple_expandable_list_item_1,android.R.id.text1,names));
}

// 根据listview的数据来计算他的应得的高度，设置高度
public void setListViewHeightBasedOnChildren(MyListView listView) {
ArrayAdapter listAdapter = (ArrayAdapter) listView.getAdapter();
if (listAdapter == null) {
return;
}

//定义一个变量,计算ListView的总高度
int totalHeight = 0;

for (int i = 0; i < listAdapter.getCount(); i++) {
View listItem = listAdapter.getView(i, null, listView);
if (listItem != null) {
listItem.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT));
listItem.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED); //无束缚测量
totalHeight += listItem.getMeasuredHeight();
}
}
ViewGroup.LayoutParams params = listView.getLayoutParams();
params.height = totalHeight
+ (listView.getDividerHeight() * (listAdapter.getCount() - 1))
+ listView.getPaddingTop() + listView.getPaddingBottom();
int h = getWindowManager().getDefaultDisplay().getHeight();
if (params.height > h / 2) {
params.height = h / 2;
}
listView.setLayoutParams(params);
}
}