Spinner Items werden nicht angezeigt

//Controls
	private Spinner cbb_Gmails;
		
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.lay_login_gmail);
		
		cbb_Gmails = (Spinner) findViewById(R.id.cbb_Gmails);
    	List<String> gmails = new ArrayList<String>();
    	
    	ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item,gmails);
                  	
    	dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
                  	
    	cbb_Gmails.setAdapter(dataAdapter);
    	
    	// Gmail Accounts holen
		AccountManager manager = (AccountManager) getSystemService(ACCOUNT_SERVICE);
		Account[] list = manager.getAccounts();


		for(Account account: list)
		{
			if(account.type.equalsIgnoreCase("com.google"))
			{
		    	gmails.add(account.name);
			}
		}
}