Custom ListPreference with dynamic entries
android
Solution
The android:dialogMessage was good starting point here, thank you @MH. for spotting it. Bellow is simple setup I ended with, I hope someone may find it helpful
<my.preference.DynamicPreference
android:title="@string/local_time"
android:key="profile_info_local_time"
/>
public class DynamicPreference extends ListPreference {
public DynamicPreference(Context context, AttributeSet attrs) {
super(context, attrs);
}
public DynamicPreference(Context context) {
super(context);
}
@Override
protected View onCreateDialogView() {
ListView view = new ListView(getContext());
view.setAdapter(adapter());
setEntries(entries());
setEntryValues(entryValues());
setValueIndex(initializeIndex());
return view;
}
private ListAdapter adapter() {
return new ArrayAdapter(getContext(), android.R.layout.select_dialog_singlechoice);
}
private CharSequence[] entries() {
//action to provide entry data in char sequence array for list
}
private CharSequence[] entryValues() {
//action to provide value data for list
}
}
Problem
I need dynamic entries in ListPreference so I can not use conventional way of XML setup of which there are tons of materials online. So far I have following setup as you can see bellow. Problem is that when I run this I see dialog with title and message but no entries are showed even though I know that entries and values are not empty (I know that my entries and values are same but I would get error if I didn't supplied entries) ``` my.preference.DynamicPreference android:title="@string/date_format" android:dialogMessage="@string/profile_info_date_format" android:entryValues="@array/date_format_values" android:entries="@array/date_format_values" ``` ``` public class DynamicPreference extends ListPreference { private int index; public DynamicPreference(Context context, AttributeSet attrs) { super(context, attrs); } public DynamicPreference(Context context) { super(context); } @Override protected void onPrepareDialogBuilder(AlertDialog.Builder builder) { builder.setTitle(getTitle()); builder.setMessage(getDialogMessage()); builder.setSingleChoiceItems(entries(), -1, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) { } }); super.onPrepareDialogBuilder(builder); } @Override public void setEntries(CharSequence[] sequence) { CharSequence[] entries = listObjects().toArray(new CharSequence[listObjects().size()]); super.setEntries(entries); } @Override public void setEntryValues(CharSequence[] sequence) { CharSequence[] values = getContext().getResources().getStringArray(R.string.date_format); super.setEntryValues(values); } } ```