Android Spinner 用PopupWindow实现

先看效果图：

Android Spinner 用PopupWindow实现_第1张图片

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{public LocationSpinnerAdapter(Context context, List 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 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 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

import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.WindowManager;import android.widget.PopupWindow;import android.widget.Toast;import com.lanyan.widget.LocationBean;import com.lanyan.widget.SpinnerPopupView;import com.lanyan.widget.SpinnerPopupWindow;import com.lanyan.widget.LocationSpinner.OnSpinnerListener;import com.lidroid.xutils.ViewUtils;public abstract class BaseActivity extends Activity implements OnSpinnerListener{protected PopupWindow mPopupWindow=null;@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);setContentView(getContentView());ViewUtils.inject(this);initView();}public abstract int getContentView();protected void initView() {// TODO Auto-generated method stub}@Overridepublic void onShow() {// TODO Auto-generated method stubif(mPopupWindow!=null&&mPopupWindow.isShowing()){return;}else if(mPopupWindow==null){mPopupWindow=SpinnerPopupWindow.getInstance().onCreateSpinnerPopupWindow(this, getPopupWindowView());}if(mPopupWindow!=null&&!mPopupWindow.isShowing()){mPopupWindow.showAsDropDown(getDropDownView());WindowManager.LayoutParams lp=getWindow().getAttributes();lp.alpha = 0.4f;getWindow().setAttributes(lp);}}protected View getDropDownView() {// TODO Auto-generated method stubreturn null;}protected View getPopupWindowView() {// TODO Auto-generated method stubreturn SpinnerPopupView.getInstance().getCurrentView(this, LocationBean.getData(), this);}@Overridepublic void onCheckChange(LocationBean bean) {// TODO Auto-generated method stubif(mPopupWindow!=null&&mPopupWindow.isShowing()){mPopupWindow.dismiss();WindowManager.LayoutParams lp=getWindow().getAttributes();lp.alpha = 1f;getWindow().setAttributes(lp);}}protected void toastShow(String message){Toast.makeText(getApplicationContext(), message, Toast.LENGTH_SHORT).show();}}

import android.view.View;import com.lanyan.widget.LocationBean;import com.lanyan.widget.LocationSpinner;import com.lidroid.xutils.view.annotation.ViewInject;public class MainActivity extends BaseActivity{@ViewInject(R.id.botton)private LocationSpinner mSpinner;@Overridepublic int getContentView() {// TODO Auto-generated method stubreturn R.layout.activity_main;}@Overrideprotected void initView() {// TODO Auto-generated method stubsuper.initView();mSpinner.setListener(this);}@Overrideprotected View getDropDownView() {// TODO Auto-generated method stubreturn mSpinner;}@Overridepublic void onCheckChange(LocationBean bean) {// TODO Auto-generated method stubsuper.onCheckChange(bean);if(bean!=null){mSpinner.setText(bean.getName());toastShow("Name: "+bean.getName()+" ID: "+bean.getId());}}}

demo链接： http://download.csdn.net/download/anddroid_lanyan/8727625

备注：这个demo用了第三方框架Xutil的注解，还有自己整合的一个ListView适配器的ListAdapter+ViewHolder用法，若需要源码联系我即可。

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