I did another workaround. Since I implement SpinnerAdapter, In function GetDropdownView, I check if item at position x should be disabled, then I make that view (row) disabled. Unfortunately, SetEnabled(false) is not working on this view, so I found workaround, like this:
row.SetClickable(true); //makes item unresponsive to clicks(?) //grayout text and icon TextView.SetTextColor(Color.LTGRAY); Image.getDrawable().mutate().setAlpha(70); so it looks disabled and doesn't respond to clicks. hate workarounds... On Jan 29, 4:07 pm, Piwai <[email protected]> wrote: > Hi there ! > > I spent a bit of time trying to create a spinner that would have some > disabled items, and finally found a SOLUTION ! Yay ! > > Romain pointed in the right direction, BUT it's not that easy. > > If one try to create a specific adapter for the spinner, for > instance : > > ArrayAdapter<String> spinnerAdapter = new ArrayAdapter<String>(this, > android.R.layout.simple_spinner_item,filters) { > public boolean isEnabled(int position) { > // Specific code to decide whether it's enabled or not > } > public boolean areAllItemsEnabled() { > return false; > }}; > > spinner.setAdapter(spinnerAdapter); > => DOESN'T work yet > > When you click on a spinner, it opens a dialog with the items feeded > from the adapter. > > BUT the adapter is wrapped by the spinner class into a DropDownAdapter > (private class inside the spinner class). > > This wrapper delegates almost all method calls, except... > > public boolean areAllItemsEnabled() { > return true; > > } > > public boolean isEnabled(int position) { > return true; > > } > > I don't know if there's a real reason for that. The delegate is > wrapped as as SpinnerAdapter, which doesn't hold those methods. > > So the solution was pretty simple thought a bit dirty : extends > Spinner, override performClick() (this is were the adapter is > wrapped), and basically do the same thing as a spinner, but with a > patched DropDownAdapter : > > /** > * A patcher spinner so that the wrapping drop down adapter delegates > * areAllItemsEnabled and isEnabled calls to the wrapped adapter. > */ > public class PatchedSpinner extends Spinner { > > public PatchedSpinner(Context context, AttributeSet attrs, int > defStyle) { > super(context, attrs, defStyle); > } > public PatchedSpinner(Context context) { > super(context); > } > public PatchedSpinner(Context context, AttributeSet attrs) { > super(context, attrs); > } > > @Override > public boolean performClick() { > > // boolean handled = super.performClick(); => this line > removed, we do not want to delegate the click to the spinner. > > Context context = getContext(); > > final DropDownAdapter adapter = new DropDownAdapter(getAdapter > ()); > > CharSequence mPrompt = getPrompt(); > > AlertDialog.Builder builder = new AlertDialog.Builder > (context); > if (mPrompt != null) { > builder.setTitle(mPrompt); > } > builder.setSingleChoiceItems(adapter, getSelectedItemPosition > (), this).show(); > > return true; > } > > private static class DropDownAdapter implements ListAdapter, > SpinnerAdapter { > private SpinnerAdapter mAdapter; > > public DropDownAdapter(SpinnerAdapter adapter) { > mAdapter = adapter; > } > > public int getCount() { > return mAdapter == null ? 0 : mAdapter.getCount(); > } > > public Object getItem(int position) { > return mAdapter == null ? null : mAdapter.getItem > (position); > } > > public long getItemId(int position) { > return mAdapter == null ? -1 : mAdapter.getItemId > (position); > } > > public View getView(int position, View convertView, ViewGroup > parent) { > return getDropDownView(position, convertView, parent); > } > > public View getDropDownView(int position, View convertView, > ViewGroup parent) { > return mAdapter == null ? null : mAdapter.getDropDownView > (position, convertView, parent); > } > > public boolean hasStableIds() { > return mAdapter != null && mAdapter.hasStableIds(); > } > > public void registerDataSetObserver(DataSetObserver observer) > { > if (mAdapter != null) { > mAdapter.registerDataSetObserver(observer); > } > } > > public void unregisterDataSetObserver(DataSetObserver > observer) { > if (mAdapter != null) { > mAdapter.unregisterDataSetObserver(observer); > } > } > > // PATCHED > public boolean areAllItemsEnabled() { > if (mAdapter instanceof BaseAdapter) { > return ((BaseAdapter) mAdapter).areAllItemsEnabled(); > } else { > return true; > } > } > > // PATCHED > public boolean isEnabled(int position) { > if (mAdapter instanceof BaseAdapter) { > return ((BaseAdapter) mAdapter).isEnabled(position); > } else { > return true; > } > } > > public int getItemViewType(int position) { > return 0; > } > > public int getViewTypeCount() { > return 1; > } > > public boolean isEmpty() { > return getCount() == 0; > } > } > > } > > If you think I'm doing things wrong, please let me know. This patched > spinner suits my needs. > > Cheers, > Piwaï > > PS : BTW, merci Romain pour le hint dans la bonne direction. > > On Dec 15 2009, 7:54 am, Romain Guy <[email protected]> wrote: > > > I just linked to it. ListAdapter.isEnabled(int). > > > On Mon, Dec 14, 2009 at 10:49 PM, rexowner <[email protected]> wrote: > > > Thank you for your reply. > > > > None of the 2 Class methods or 8 inherited methods on the page cited > > > appear to have > > > anything to do with disabling items in the list. None of the > > > subclasses > > > appear to have a way to do this either. > > > > Maybe I am dense, but it is not at all clear how to do this. > > > > On Dec 13, 2:10 pm, Romain Guy <[email protected]> wrote: > > >> This is performed by the > > >> adapter:http://d.android.com/reference/android/widget/ListAdapter.html#isEnab...) > > > >> On Fri, Dec 11, 2009 at 4:50 PM, rexowner <[email protected]> wrote: > > >> > I also want to do this, and after hunting around for half a day, have > > >> > not found a way to do it, > > >> > and am moving on to some other priorities. > > > >> > I also would be very interested in this useful behavior. > > > >> > Sorry I can't be of more help, but if you find a way, please post. > > > >> > Thanks! > > > >> > On Dec 10, 4:36 pm, Keith Wiley <[email protected]> wrote: > > >> >> How do Idisable(gray out, make unselectable) an item in aSpinner? > > >> >> I tried calling View.disable() on the associated child of theSpinner, > > >> >> but it remains black text (not gray) and selectable. > > > >> >> There must be some way of showing but leaving unselectable certain > > >> >> items in aspinner, right? This is a standard "menu" behavior that > > >> >> goes back decades. Android permits it, right? I want the user to see > > >> >> that certain options are possible under certain circumstances even if > > >> >> they are impossible at the immediate moment...exactly the way items in > > >> >> the main Android menu-button invoked menu can be visible but > > >> >> unselectable. > > > >> >> Thanks a lot. I'm sure I'm just missing something obvious here. > > > >> >> Cheers! > > > >> > -- > > >> > 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 > > > >> -- > > >> Romain Guy > > >> Android framework engineer > > >> [email protected] > > > >> Note: please don't send private questions to me, as I don't have time > > >> to provide private support. All such questions should be posted on > > >> public forums, where I and others can see and answer them > > > > -- > > > 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 > > > -- > > Romain Guy > > Android framework engineer > > [email protected] > > > Note: please don't send private questions to me, as I don't have time > > to provide private support. All such questions should be posted on > > public forums, where I and others can see and answer them -- You received this message because you are subscribed to the Google Groups "Android Developers" group. 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