Text-Größe ein Spinner

nach einigen tests, gibt es eine einfachere Möglichkeit als Unterklassen ArrayAdapter. Ändern Sie die

ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, R.array.planets_array,android.R.layout.simple_spinner_item);//this is from the tutorial, adapt with your line

dieser Zeile :

ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, R.array.planets_array, R.layout.textview);

Müssen Sie nur ändern das design der TextView verwenden Sie die Spinner. Ich habe gerade versucht mit diesem, wie das layout der textview.xml :

<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:text="@+id/TextView01" android:id="@+id/TextView01"
android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="30sp"></TextView>

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definieren 2 xml: R. layout.spinner_item, R. layout.spinner_dropdown_item

ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, R.array.planets_array, R.layout.spinner_item);
adapter.setDropDownViewResource(R.layout.spinner_dropdown_item);

spinner_item.xml

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    style="?android:attr/spinnerItemStyle"
    android:singleLine="true"
    android:ellipsize="marquee"
    android:textSize="18sp" >
</TextView>

spinner_dropdown_item.xml

<?xml version="1.0" encoding="utf-8"?>
<CheckedTextView xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@android:id/text1"
    style="?android:attr/spinnerDropDownItemStyle"
    android:singleLine="true"
    android:layout_width="match_parent"
    android:layout_height="48dp"
    android:ellipsize="marquee"
    android:textSize="18sp" />

--------------------------------Update--------------------------------------

Den rest-code:

final ActionBar actionBar = getActivity().getActionBar();
RelativeLayout relative = new RelativeLayout(getActivity());
Spinner spinner = new Spinner(getActivity());
spinner.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.MATCH_PARENT));

relative.addView(spinner);
actionBar.setDisplayShowCustomEnabled(true);
actionBar.setCustomView(relative);

//Set adapter and listener
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, R.array.planets_array, R.layout.spinner_item);
adapter.setDropDownViewResource(R.layout.spinner_dropdown_item);

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