android - Java Spinner/Button influences textfields -

android - Java Spinner/Button influences textfields -

i got problem in android app. there spinner, 2 text fields , button. first problem is, when nail button save content of text fields database. set fields "".

savedata(); fahrzeug newvehicle = new fahrzeug(vehicledescription.gettext().tostring(), double.parsedouble(vehiclemileage.gettext().tostring()), getunitint()); vehicledatabase.addfahrzeug(newvehicle); vehicledescription.settext(""); vehiclemileage.settext("");

vehicledescription , vehiclemileage text fields declared like

vehicledescription = (edittext) findviewbyid(r.id.fahrzeughinzufügen); vehiclemileage = (edittext) findviewbyid(r.id.edittext);

the text fields contain hint. if nail button, text fields empty (no hint). after press homecoming , backspace, hint shows again. ideas why?

also when select item in spinner same thing happens text fields although spinner not connected in way text fields. thought why hapening? when select item hint in text fields gone , after pressing homecoming , backspace shows again.

spinner setup:

public spinner fahrzeugliste; arrayadapter<string> adapter = new arrayadapter<string>(this, android.r.layout.simple_spinner_item, allvehicles); fahrzeugliste.setadapter(adapter); fahrzeugliste.setselection(allvehicles.indexof(currentvehicle));

no clue why happens, pls help me out there! thanks!

java android spinner textfield