先看效果图：
控件类：
import android.content.Context;import android.util.AttributeSet;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class LocationSpinner extends Button implements OnClickListener {public LocationSpinner(Context context, AttributeSet attrs, int defStyleAttr) {super(context, attrs, defStyleAttr);// TODO Auto-generated constructor stubsetOnClickListener(this);}public LocationSpinner(Context context, AttributeSet attrs) {this(context, attrs,0);// TODO Auto-generated constructor stub}public LocationSpinner(Context context) {this(context,null);// TODO Auto-generated constructor stub}@Overridepublic void onClick(View v) {// TODO Auto-generated method stubif(listener!=null){listener.onShow();}}private OnSpinnerListener listener;public OnSpinnerListener getListener() {return listener;}public void setListener(OnSpinnerListener listener) {this.listener = listener;}public interface OnSpinnerListener{void onShow();void onCheckChange(LocationBean bean);}}适配器:
import java.util.List;import android.content.Context;import android.view.View;import com.lanyan.adapter.ListAdapter;import com.lanyan.adapter.ViewHolder;import com.lanyan.floatdialot.R;import com.lanyan.interfaces.OnListViewListener;public class LocationSpinnerAdapter extends ListAdapter<LocationBean>{public LocationSpinnerAdapter(Context context, List<LocationBean> list) {super(context, list);// TODO Auto-generated constructor stub}@Overridepublic int setContentView() {// TODO Auto-generated method stubreturn R.layout.item;}@Overridepublic void initial(View view, LocationBean arg1,OnListViewListener<LocationBean> arg2) {// TODO Auto-generated method stubViewHolder.setTextView(view, R.id.head, arg1.getName());}}PopupWindow:
import android.app.Activity;import android.content.Context;import android.graphics.drawable.ColorDrawable;import android.util.DisplayMetrics;import android.view.View;import android.view.WindowManager;import android.widget.PopupWindow;public class SpinnerPopupWindow {private int mScreenWidth;private int mScreenHeight;public SpinnerPopupWindow(){}public static SpinnerPopupWindow getInstance(){return new SpinnerPopupWindow();}public PopupWindow onCreateSpinnerPopupWindow(Activity mActivity,View mView){initScreen(mActivity);PopupWindow mPopupWindow=new PopupWindow(mView,mScreenWidth/3*2,mScreenHeight/3*2);mPopupWindow.setAnimationStyle(android.R.style.Animation_Dialog);mPopupWindow.setBackgroundDrawable(new ColorDrawable(0x000000));mPopupWindow.setOutsideTouchable(false);return mPopupWindow;}public void initScreen(Activity mActivity){WindowManager manager=(WindowManager)mActivity.getSystemService(Context.WINDOW_SERVICE);DisplayMetrics outMetrics=new DisplayMetrics();manager.getDefaultDisplay().getMetrics(outMetrics);mScreenWidth=outMetrics.widthPixels;mScreenHeight=outMetrics.heightPixels;}}PopupWindow的宽高可根据自己的需求定义，ousideTouch事件 手动修改即可，最好是自定义style popouWindow公开方法。这里的传入View使用的个人比较喜欢的一种方式：
import java.util.List;import android.annotation.SuppressLint;import android.app.Activity;import android.view.LayoutInflater;import android.view.View;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.ListView;import com.lanyan.floatdialot.R;import com.lanyan.widget.LocationSpinner.OnSpinnerListener;import com.lidroid.xutils.ViewUtils;import com.lidroid.xutils.view.annotation.ViewInject;@SuppressLint("InflateParams")public class SpinnerPopupView {@ViewInject(R.id.spinner_listview)private ListView mListView;private int mPosition=-1;private View mView;private LocationSpinnerAdapter mAdapter;public SpinnerPopupView(){}public static SpinnerPopupView getInstance(){return new SpinnerPopupView();}public View getCurrentView(Activity mActivity,List<LocationBean> mList,final OnSpinnerListener mListener){mView=LayoutInflater.from(mActivity).inflate(R.layout.spinner, null);ViewUtils.inject(this,mView);mAdapter=new LocationSpinnerAdapter(mActivity, mList);mListView.setAdapter(mAdapter);mListView.setOnItemClickListener(new OnItemClickListener() {@Overridepublic void onItemClick(AdapterView<?> parent, View view,int position, long id) {// TODO Auto-generated method stubif(mPosition!=position){mPosition=position;mListener.onCheckChange(mAdapter.getItem(position));}else{mListener.onCheckChange(null);}}});return mView;}}下面是测试类（个人有强迫症必用BaseActivity）:BaseActivity.MainActivity
只要看得开放得下，何愁没有快乐的春莺在啼鸣，
