Android Expandablelistview cannot be expanded

1. Button
Yes, yes, that is the button component, do not know that there are fewer times the problem, a lot of it is caused by it!
The most common problem: Expandablelistview cannot be expanded, Onitemclicklistener does not respond to problems.
Workaround : Check the view file loaded in the GetView method, whether it contains a button or a ImageButton, if it is included, change it to TextView or ImageView try, the problem can be solved.
Cause: The layout file of the listener event sequence is the component view, and then the layout file skills, and such as Onitemclicklistener, such as listening to the event, are listening to the layout, if there is a button like this, will be intercepted and not listen to.

2. Arrows
You have defined the layout view with arrows, but the arrows that come with the system are displayed.
Problem: Remove the system arrow display.
Workaround: Add android:groupindicator= "@null" to the Expandablelistview attribute

Android Expandablelistview cannot be expanded