0102 Touch Events Additional considerations

Activity does not respond to onintercepttouchevent (motionevent ev), which is event interception.

It is also important to note that the response of the view to the dispatchtouchevent (motionevent ev) and onintercepttouchevent (motionevent ev) is conditional on the view To add a child View in the

If the current view is already a minimal unit view (such as TextView), you cannot add a child view to this minimum view,

It is not possible to distribute and intercept events for sub-View, so it has no dispatchtouchevent (motionevent ev) and onintercepttouchevent (motionevent ev), only Ontouchevent (motionevent ev).

Some subclasses of ViewGroup (GridView, ScrollView ... ) overrides the Onintercepttouchevent () method, which returns True when the Action_move event occurs to intercept

0102 Touch Events Additional considerations