And alas this is not to be. I ended up having to try this and it fails. The ExpandableListView considers a collapsed group to be empty (code indicates for performance). This means the selector will always draw the empty version of the indicator.
It may be possible by extending ELV and overriding getIndicator(). Unfortunately that method is marked private so I'll have to replace all the code. Lots of private methods in Android that may be better suited as protected. C'est la vie. I may give it a try. On Apr 5, 12:32 pm, Walt Armour <[email protected]> wrote: > I've been fighting with styling on ExpandableListView as well (an area > that could use some improvement in a future release). > > The problem with the current implementation is in the selector element > for the group expander. It can be found in expander_group.xml and > looks like this: > > <selector xmlns:android="http://schemas.android.com/apk/res/android";> > <item > android:state_expanded="true" > android:drawable="@drawable/expander_ic_maximized" /> > <item > android:drawable="@drawable/expander_ic_minimized" /> > </selector> > > The problem is that it lacks a state for empty. The code and > attributes support it (state_empty) but it isn't defined in here. > Here are the hypothetical (completely untested) steps you could use to > achieve this: > > - Grab the existing expander_group.xml and put it into your drawable > directory. > - Modify it to include a section for the empty state with no image. > Something like this: > <item android:state_empty="true" android:drawable="@drawable/ > empty"/> > - Modify your ExpandableListView element and set the group indicator > to be your private expander_group.xml > > Let us know how it works out. For myself, I need even more control so > I'm about to move to the "roll my own" stage. > > On Feb 22, 8:35 pm, ls02 <[email protected]> wrote: > > > setGroupIndicator will set ALL groups indicator. What I need is to > > remove expandable arrow only from those items that have no chidren. > > > On Feb 22, 8:53 pm, TreKing <[email protected]> wrote: > > > > On Mon, Feb 22, 2010 at 5:19 PM, ls02 <[email protected]> wrote: > > > > How do I remove expandable arrow from some of the items in > > > > ExpandableListView? > > > > Have you tried the setViewIndicator() function? > > > > > Also is there way to customize this arrow, move it > > > > to another place in the item? > > > > Haven't tried it but the documentation has indicatorLeft and > > > indicatorRight > > > xml attributes that are supposed to be for the left and right bounds of > > > the > > > icon. > > > > ------------------------------------------------------------------------------------------------- > > > TreKing - Chicago transit tracking app for Android-powered > > > deviceshttp://sites.google.com/site/rezmobileapps/treking -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en To unsubscribe, reply using "remove me" as the subject.
