Androidの自定义Spinner实现

Androidの自定义Spinner实现
1.有时候因为项目的界面风格很多控件如果使用原生的样式感觉会与整体风格有些不搭所以需要自定义样式，很多项目中自定义控件都是必不可少的这里参考网上的一些资料实现了一个自定义Spinner 记录下加深印象
先来看代码，，定义主类

public class SpinnerTestActivity extends Activity {public static ArrayList<String> list = new ArrayList<String>();private ArrayAdapter<String> adapter;private CustomerSpinner spinner;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);init();spinner = (CustomerSpinner) findViewById(R.id.spinner);spinner.setList(list);adapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item, list);spinner.setAdapter(adapter);}public void init() {list.add("路飞");list.add("索隆");list.add("山治");}}

在这里自定义一个spinner组件，我们看下对应xml。

  <com.spinner.test.CustomerSpinner        android:id="@+id/spinner"        android:layout_width="150dp"        android:layout_height="50dp"        android:layout_marginTop="15dp"        android:background="@drawable/bg_spinner" />

然后需要重写一个自定义的CustomerSpinner对象继承自Spinner

public class CustomerSpinner extends Spinner implements OnItemClickListener {public static SelectDialog dialog = null;private ArrayList<String> list;// ArrayList<String> list存储所要显示的数据public static String text;public CustomerSpinner(Context context, AttributeSet attrs) {super(context, attrs);}// 如果视图定义了OnClickListener监听器，调用此方法来执行@Overridepublic boolean performClick() {Context context = getContext();final LayoutInflater inflater = LayoutInflater.from(getContext());final View view = inflater.inflate(R.layout.formcustomspinner, null);final ListView listview = (ListView) view.findViewById(R.id.formcustomspinner_list);ListviewAdapter adapters = new ListviewAdapter(context, getList());listview.setAdapter(adapters);listview.setOnItemClickListener(this);dialog = new SelectDialog(context, R.style.dialog);// 创建Dialog并设置样式主题LayoutParams params = new LayoutParams(650, LayoutParams.FILL_PARENT);dialog.setCanceledOnTouchOutside(true);// 设置点击Dialog外部任意区域关闭Dialogdialog.show();dialog.addContentView(view, params);return true;}@Overridepublic void onItemClick(AdapterView<?> view, View itemView, int position,long id) {setSelection(position);setText(list.get(position));if (dialog != null) {dialog.dismiss();dialog = null;}}public ArrayList<String> getList() {return list;}public void setList(ArrayList<String> list) {this.list = list;}public String getText() {return text;}public void setText(String text) {this.text = text;}}

自定义中，需要添加list,需要adapter时候。

public class ListviewAdapter extends BaseAdapter {private Context context;private ArrayList<String> list;public ListviewAdapter(Context context,ArrayList<String> list){this.context = context;this.list = list;}@Overridepublic int getCount() {// TODO Auto-generated method stubreturn list.size();}@Overridepublic Object getItem(int arg0) {// TODO Auto-generated method stubreturn arg0;}@Overridepublic long getItemId(int arg0) {// TODO Auto-generated method stubreturn arg0;}@Overridepublic View getView(int arg0, View arg1, ViewGroup arg2) {ViewHolder viewHolder = null;if(arg1 == null&&list.size() != 0){viewHolder = new ViewHolder();LayoutInflater inflater = LayoutInflater.from(context);arg1 = inflater.inflate(R.layout.item, null);viewHolder.textView = (TextView)arg1.findViewById(R.id.itemText);arg1.setTag(viewHolder);}elseviewHolder = (ViewHolder) arg1.getTag();viewHolder.textView.setText(list.get(arg0));return arg1;}}

最后，附上源码：自定义spinner源码下载

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