Android 下拉菜單 Spinner 賦值

private Spinner m_spiModel = null; //產品型號
m_spiModel = (Spinner) findViewById(R.id.spiModel);//產品型號

String strModel_init="A型,B型,C型,D型";
String[] arrModel =strModel_value.split(",");//轉換 數組

ArrayAdapter<String> adapter;//數組 配置器 下拉菜單賦值用
//將可選內容與ArrayAdapter連接起來  
adapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item,arrModel);     
//設置下拉列表的風格  
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);  
m_spiModel.setAdapter(adapter);//將adapter 添加到spinner中    
m_spiModel.setVisibility(View.VISIBLE);//設置默認值