在下拉列表Spinner中添加自定义文字和图标的方法。

有关于在下拉列表Spinner中添加自定义文字和图标的方法，这里以人的姓名和头像，地址为例，当然只要作出修改就可以把适配器应用于ListView 显示。

 

首先创建一个储存人信息的Person类。

public class Person {

    private String personName, personAddress;
    private Integer drawable;

    public Person(String personName,String personAddress,Integer drawable){
        super();
        this.personName = personName;
        this.personAddress = personAddress;
        this.drawable = drawable;
    }
    public String getPersonName(){
        return personName;
    }

    public void setPersonName(String personName){
        this.personName = personName;
    }

    public String getPersonAddress(){
        return personAddress;
    }

    public void setPersonAddress(String personAddress){
        this.personAddress = personAddress;
    }

    public Integer getDrawable() {
        return drawable;
    }

    public void setDrawable(Integer drawable) {
        this.drawable = drawable;
    }
}

然后创建一个MyAdapter类作为适配器继承自BaseAdapter,重写必须的四个方法

public class MyAdapter extends BaseAdapter{

    private List mList = null;
    private Context mContext = null;

    public MyAdapter(Context pContext,List pList){
        this.mContext = pContext;
        this.mList = pList;
    }
    @Override
    public int getCount() {
        return mList.size();
    }

    @Override
    public Object getItem(int position) {
        return mList.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {

        //利用getView方法给我们提供的convertView，也可以自己新建一个Layout
        if (convertView == null) {
            LayoutInflater mLayoutInflater = LayoutInflater.from(mContext);     //布局加载权限
            convertView = mLayoutInflater.inflate(R.layout.item_custom, null);
        }

        ImageView imageView = (ImageView) convertView.findViewById(R.id.imageView1);
        imageView.setImageResource(mList.get(position).getDrawable());

        TextView mTextView1 = (TextView) convertView.findViewById(R.id.textView1);
        TextView mTextView2 = (TextView) convertView.findViewById(R.id.textView2);

        mTextView1.setText(mList.get(position).getPersonName());
        mTextView2.setText(mList.get(position).getPersonAddress());

        return convertView;
    }
}

还有自定义的布局文件

最后是Activity类的内容，这里建立两个Spinner作为对比，一个是简单使用系统的ArrayAdapter，另一个则是我们自定义的adapter

public class MainActivity extends ActionBarActivity {

    private Spinner spinner1 = null;
    private Spinner spinner2 = null;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        spinner1 = (Spinner) findViewById(R.id.spinner1);
        String[] mItems = getResources().getStringArray(R.array.language);

        ArrayAdapter adapter = new ArrayAdapter
                (this,android.R.layout.simple_spinner_item,mItems);      //绑定字符串数组
        spinner1.setAdapter(adapter);
        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinner1.setSelection(0, true);    //默认选中第一个
        spinner1.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView parent, View view, int position, long id) {
                String[] language = getResources().getStringArray(R.array.language);
                Toast.makeText(MainActivity.this, "你点击的是：" + language[position], Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onNothingSelected(AdapterView parent) {

            }
        });

        spinner2 = (Spinner) findViewById(R.id.spinner2);
        final List persons = new ArrayList();  //建立数据源
        persons.add(new Person("张三","北京",R.drawable.beijing));         //添加数据
        persons.add(new Person("李四", "上海",R.drawable.shanghai));
        persons.add(new Person("王五", "广州",R.drawable.guangzhou));
        persons.add(new Person("赵六", "深圳",R.drawable.shenzhen));
        MyAdapter myAdapter = new MyAdapter(this,persons);     //实例化适配器

        spinner2.setAdapter(myAdapter);    //下拉列表绑定适配器
        spinner2.setSelection(0,true);    //默认选中第一个,避免打开程序就立即执行onItemSelected方法

        //设置点击列表项目监听事件
        spinner2.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView parent, View view, int position, long id) {

                Toast.makeText(MainActivity.this, "你点击的是：" +
                        persons.get(position).getPersonName(), Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onNothingSelected(AdapterView parent) {
            }
        });
    }
}