**该工程可以独立运行，也可以设置成library(在工程project.properties文件中中设置android.library=true或者使用eclipse工具设置) **

实现Android竖直滚动选择功能
    
  使用方式：
 
  public class MainActivity extends AIActivity {
      public static final String TAG = MainActivity.class.getSimpleName();
  
      private static final String[] PLANETS = new String[]{"河北省", "北京市", "Earth", "Mars", "Jupiter", "Uranus", "Neptune", "Pluto","其他"};
  
      @AIView(R.id.main_wv)
      private WheelView wva;
  
      @Override
      public void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          wva.setOffset(1);// 偏移量，上下各一个
          wva.setItems(Arrays.asList(PLANETS));
          wva.setOnWheelViewListener(new WheelView.OnWheelViewListener() {
              @Override
              public void onSelected(int selectedIndex, String item) {
                  Logger.d(TAG, "selectedIndex: " + selectedIndex + ", item: " + item);
              }
          });
  
  
      }
      
      /**
      	* onClickCallbackSample注册监听可以下载layout的xml中
      	    <Button
		        android:id="@+id/main_show_dialog_btn"
		        android:layout_width="match_parent"
		        android:layout_height="wrap_content"
		        android:layout_margin="8dp"
		        android:onClick="onClickCallbackSample"
		        android:text="show WheelView in Dialog!" />
    	*
      	*/
      public void onClickCallbackSample(View view) {
          switch (view.getId()) {
              case R.id.main_show_dialog_btn:
                  View outerView = LayoutInflater.from(context).inflate(R.layout.wheel_view, null);
                  WheelView wv = (WheelView) outerView.findViewById(R.id.wheel_view_wv);
                  wv.setOffset(2);
                  wv.setItems(Arrays.asList(PLANETS));
                  wv.setSeletion(3);
                  wv.setOnWheelViewListener(new WheelView.OnWheelViewListener() {
                      @Override
                      public void onSelected(int selectedIndex, String item) {
                          Logger.d(TAG, "[Dialog]selectedIndex: " + selectedIndex + ", item: " + item);
                      }
                  });
  
                  new AlertDialog.Builder(context)
                          .setTitle("WheelView in Dialog")
                          .setView(outerView)
                          .setPositiveButton("OK", null)
                          .show();
  
                  break;
          }
      }


}