Why my android spinner is transparent? -


i'm android newbie... , have problem spinners. have activity image background , spinner items (a list of years) loaded code using adapter. problem when spinner closed, it's transparent except of text , right down corner triangle (black). if set spinner background color, right down corner disappear , spinner becomes similar textview (too confused user!).

if change activity style (for example "black"), in graphical view spinner becomes want it: lightgray , right down corner.

but in runtime phase, becomes again transparent.

screenshot

why? suggestions?

androidmanifest.xml

    <uses-sdk        android:minsdkversion="8"        android:targetsdkversion="17" />

xml in activity spinner

    <spinner             android:id="@+id/spnyear"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:layout_alignbottom="@+id/btnscan"             android:layout_marginbottom="92dp"             android:layout_marginright="22dp"             android:layout_toleftof="@+id/btnscan"             android:alpha="1"             android:drawselectorontop="true"/>

java activity code spinner initialization

arrayadapter<string> adapter = new arrayadapter<string>(this, android.r.layout.simple_spinner_item, years); adapter.setdropdownviewresource(android.r.layout.simple_spinner_dropdown_item); spnyear.setadapter(adapter); spnyear.setselection(spnyear.getcount() - 1);

you can use custome xml layout file , set in adapter

myfile.xml  <?xml version="1.0" encoding="utf-8"?> <textview       xmlns:android="http://schemas.android.com/apk/res/android"     android:id="@+id/textname"     android:layout_width="fill_parent"      android:layout_height="wrap_content"     android:textsize="16sp"     android:gravity="left"       android:textstyle="bold"     android:textcolor="#449def"              android:padding="5dip"/>  arrayadapter<string> adapter = new arrayadapter<string>(this, r.layout.myfile, anni2);

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