Solution to nest ScrollView in the item of Android ListView
Frontier: Sometimes, the listview item needs to display more fields. Considering the display problem, the item has to nest ScrollView to implement it. So the problem comes. When the listview needs to do click events, due to the nested use of ScrollView, the listvew click event is intercepted: I have to rewrite the listview to implement it.
/**
*
* @author Author: Yi Huangxing
*
* @daOctober 24, 2016 Time:
*
* @toTODO Class Description: Solution to solve the problem of nested ScrollView in ListView and ScrollView intercepting ListView's Item click event
*
*
* Nesting a ScrollView in the listview, and it is normal to slide horizontally and vertically, but the Item of the Listview cannot be clicked. After querying the Android distribution mechanism, solve it, inherit Listview and rewrite Listview's onInterceptTouchEvent.
*
* OnTouchEvent in onInterceptTouchEvent always calls listview to ensure that all events in listview are executed.
* (ev) Do not intercept the slip that needs to be passed to the ScrollView.
*/
public class MyListView extends ListView {
private int flag = 0;
private float StartX;
private float StartY;
public MyListView(Context context) {
super(context);
// TODO Auto-generated constructor stub
}
public MyListView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
// TODO Auto-generated constructor stub
}
public MyListView(Context context, AttributeSet attrs) {
super(context, attrs);
// TODO Auto-generated constructor stub
}
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
// Always call the touch event processing of listviewonTouchEvent(ev);
if (() == MotionEvent.ACTION_DOWN) {
StartX = ();
StartY = ();
return false;
}
if (() == MotionEvent.ACTION_MOVE) {
float ScollX = () - StartX;
float ScollY = () - StartY;
// Determine whether it is horizontal or vertical. If it is vertical, intercept the move event and up event (not intercepting will cause the listview and scrollview to perform sliding at the same time)if ((ScollX) < (ScollY)) {
flag = 1;
return true;
}
return false;
}
if (() == MotionEvent.ACTION_UP) {
if (flag == 1) {
return true;
}
return false;
}
return (ev);
}
}
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