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【Android】spinner下拉框

程序员文章站 2022-07-14 18:07:51
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如何使用spinner

1.在xml中写入此控件

	<EditText
            android:id="@+id/textFrameNoId"
            style="@style/style_comm_card_right"
            android:visibility="gone" />
        
        <Spinner
            android:id="@+id/spinnerBaseFrameNo"
            style="@style/style_comm_card_right"
            android:clickable="true"
            android:focusableInTouchMode="false"
            android:hint="--请选择--"
            android:spinnerMode="dropdown" />

2.在activity中获得此控件

	@ViewInject(R.id.textFrameNoId)
  	private EditText mFrameNoId;
	
	  @ViewInject(R.id.spinnerBaseFrameNo)
	  private Spinner mBaseFrameNo;

3.在activity中加载view

	private void initView() {
	   	setContentView(R.layout.devinfo_register);
		   ViewUtils.inject(this);
     mBaseFrameNo.setOnItemSelectedListener(mBaseFrameNoOnItemSelectedListener);

4.从缓存中获取数据

//从打开app缓存的字典中获取架号、层号、位号的字典
  private List<CommBean> mFrameNos = DictProtocol.getInnerDict(DictCacheUtils.getString(this, "DEV_BASE_FRAME_NO"));

5.将数据添加到控件中

private void initDatas() {
   CommonDictAdapter mFrameNoAdapter = new CommonDictAdapter(mFrameNos, this);
		   mBaseFrameNo.setAdapter(mFrameNoAdapter);

6.注意:全部成功后才会显示出下拉框

给spinner赋予默认值

mBaseFrameNo.setSelection(1);   
和.setSelection(position, animate)