Spinner

资源的方式添加

安卓中的下拉框 Spinner可以通过xml string中配置

    <string-array name="spingarr">
        <item>支付宝</item>
        <item>微信</item>
    </string-array>

布局文件

        <Spinner
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:entries="@array/spingarr"
            android:id="@+id/payMode"
            android:layout_weight="1">
        </Spinner>

获取spinner选中的值

private Spinner payMode;
private int payNum;
private String strPay;

payMode = (Spinner)findViewById(R.id.payMode);

payMode.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
    @Override
    public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
        strPay = (String)payMode.getSelectedItem();
    }

    @Override
    public void onNothingSelected(AdapterView<?> parent) {

    }
});

代码的方式添加

        payMode = (Spinner) findViewById(R.id.payMode);

        //数据
        data_list = new ArrayList<String>();
        data_list.add("微信");
        data_list.add("支付宝");
//适配器
        arr_adapter= new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, data_list);
        //设置样式
        arr_adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        //加载适配器
        spinner.setAdapter(arr_adapter);