android 更改spinner默认样式

效果图：

一张图片（Spinner背景图片，带白色箭头的透明图片），一个Activity布局（背景为蓝色）和两个样式布局

1.Activity布局

<?xml version="1.0" encoding="utf-8"?>

2.adapter_mytopactionbar_spinner 可以更改默认样式的布局

<?xml version="1.0" encoding="utf-8"?>

3.

adapter_mytopactionbar_spinner_item  设置spinner展开的Item布局

<?xml version="1.0" encoding="utf-8"?>

Activity 中

public class SpinnerActivity extends Activity {    private Spinner spinner;    private static String[] mArrayString = null;    private ArrayAdapter mArrayAdapter;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.test_spinner_layout);        spinner=(Spinner)findViewById(R.id.test_spinner);//        初始化spinner中显示的数据        mArrayString = new String[]{"android讲义","java面向对象","王者归来"};//        adapter_mytopactionbar_spinner改变了spinner的默认样式        mArrayAdapter=new ArrayAdapter(this,R.layout.adapter_mytopactionbar_spinner,mArrayString){            @Override            public View getDropDownView(int position, View convertView, ViewGroup parent) {                if (convertView == null){//                    设置spinner展开的Item布局                    convertView = getLayoutInflater().inflate(R.layout.adapter_mytopactionbar_spinner_item, parent, false);               }                TextView spinnerText=(TextView)convertView.findViewById(R.id.spinner_textView);                spinnerText.setText(getItem(position));              return convertView;            }        };        spinner.setAdapter(mArrayAdapter);//        spinner设置监听        spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {            @Override            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {                Toast.makeText(SpinnerActivity.this,"你选的是的是第"+position,Toast.LENGTH_SHORT).show();            }            @Override            public void onNothingSelected(AdapterView<?> parent) {            }        });     }}

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