Combo box / Drop down list box in Android

As usual doing something simple in Android is frustrating - this time: a simple Combo (or DropDownList). The little and important tweak - calling "setDropDownViewResource" to set the style of the items in the dialog box.

XML:
<spinner id="@+id/spinner" layout_width="wrap_content" android:layout_height="wrap_content" />

Code to add the data:

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1. Spinner spinner = (Spinner)this.findViewById(R.id.spinner);  
2. ArrayAdapter<String> adapter = new ArrayAdapter<String>(  
3.         this,  
4.         android.R.layout.simple_spinner_item,  
5.         new String[] { "1", "2", "3" });  
6. adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);  
7. spinner.setAdapter(adapter);  

A common task is to populate a spinner using a string array defined in a resource file. Here's a function which do just that:

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1. public static void populateSpinnerWithArray(Spinner spinner, int stringArrayResId) {  
2.     ArrayAdapter<String> adapter = new ArrayAdapter<String>(  
3.             spinner.getContext(),    
4.             android.R.layout.simple_spinner_item,  
5.             spinner.getContext().getResources().getStringArray(stringArrayResId));    
6.     adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);    
7.     spinner.setAdapter(adapter);