Android(安卓)可编辑下拉选择框

Android EditText可输入可选择的EditText

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1.页面布局 layout 片段

        <RelativeLayout             android:id="@+id/projectmodule"            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:layout_marginTop="40sp"            android:minHeight="50sp">                        <TextView                 android:id="@+id/txt_project"                style="@style/label_text"                android:text="项目名称"/>                        <EditText                android:id="@+id/enrol_project_name"                style="@style/inputText"                android:layout_toRightOf="@id/txt_project"                android:hint="项目名称"                android:inputType="text|textPersonName"                android:paddingRight="50dp"                android:maxLength="20" />            <ImageButton                android:id="@+id/open_arrow_btn"                android:layout_width="wrap_content"                android:layout_height="match_parent"                android:layout_alignBottom="@id/enrol_project_name"                android:layout_alignRight="@id/enrol_project_name"                android:layout_alignTop="@id/enrol_project_name"                android:layout_marginRight="2dp"                android:background="@drawable/open_arrow" />                    </RelativeLayout>

2.创建新的布局文件 proname_spinner.xml 下拉列表的ListView

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"     android:gravity="center_horizontal"    android:background="@color/popwin_bg">    <ListView        android:id="@+id/proname_list"        android:layout_width="match_parent"        android:layout_height="match_parent"        android:cacheColorHint="#00000000"        android:divider="#508a88"        android:dividerHeight="1dp">    </ListView></LinearLayout>

3.创建列表项布局文件 proname_spinner_item.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:orientation="horizontal">        <ImageView         android:id="@+id/item_icon"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:src="@drawable/pro_icon"        android:layout_marginLeft="5dp"        android:minHeight="40dp"/>    <TextView        android:id="@+id/item_val"        android:layout_width="0dp"        android:layout_height="wrap_content"        android:layout_gravity="center"        android:layout_marginLeft="15dp"        android:layout_weight="1"        android:textColor="#4f5555"        android:textSize="20sp"         android:singleLine="true"        android:ellipsize="marquee"/></LinearLayout>

4.创建数据适配器文件 PopupAdapter.java

package com.photo.adapter;import java.util.ArrayList;import android.content.Context;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.util.Log;import android.view.LayoutInflater;import android.view.MotionEvent;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.TextView;import com.photo.activity.R;/** * @description 工程名称 带下拉选择的可编辑输入框,PopupWindow的数据适配器 *  * @author Li Junchao * @date 2014年5月9日 */public class PopupAdapter extends BaseAdapter{private Context context;private ArrayList<String> list = new ArrayList<String>();@SuppressWarnings("unused")private Handler handler = null;private LayoutInflater layoutInflater;public PopupAdapter(){}public PopupAdapter(Context context,ArrayList<String> list){this.context = context;this.list = list;}public PopupAdapter(Context context,ArrayList<String> list,Handler handler){this.context = context;this.list = list;this.handler = handler;}/* (non-Javadoc) * @see android.widget.Adapter#getCount() */@Overridepublic int getCount(){return this.list != null ? list.size() : 0;}/* (non-Javadoc) * @see android.widget.Adapter#getItem(int) */@Overridepublic Object getItem(int position){return list.get(position);}/* (non-Javadoc) * @see android.widget.Adapter#getItemId(int) */@Overridepublic long getItemId(int position){return position;}/* (non-Javadoc) * @see android.widget.Adapter#getView(int, android.view.View, android.view.ViewGroup) */@Overridepublic View getView(int position, View convertView, ViewGroup parent){ViewHoler holder = null;if(null == convertView){holder = new ViewHoler();layoutInflater = LayoutInflater.from(context);convertView = layoutInflater.inflate(R.layout.proname_spinner_item,null);holder.imgBtn = (ImageView)convertView.findViewById(R.id.item_icon);holder.txtView = (TextView)convertView.findViewById(R.id.item_val);//绑定每一列的数据对象在列表项上convertView.setTag(holder);}else{holder = (ViewHoler)convertView.getTag();}if(holder != null){//给每个列表项指定一个Id标识符,这个标识符是一个确切的数字convertView.setId(position);//同时设置列表项中每个元素的标识符，都是本列表项在列表集合中的索引holder.setId(position);//从数据集合中取值显示列表文本holder.txtView.setText(list.get(position));//设置触摸事件  这里最好不要为每一个列表项绑定touch事件，可以为ListView绑定OnItemClickListener//holder.txtView.setOnTouchListener(new SelectedItemTouchListener(list,position,handler));}return convertView;}/** * 列表项触摸事件 */public class SelectedItemTouchListener implements View.OnTouchListener{private ArrayList<String> list = new ArrayList<String>();private int position = 0;private Handler handler = null;public SelectedItemTouchListener(){}public SelectedItemTouchListener(ArrayList<String> list,int position,Handler handler){this.list = list;this.position = position;this.handler = handler;}@Overridepublic boolean onTouch(View v, MotionEvent event){Message message = new Message();Bundle bundle = new Bundle();//if(event.getAction() == MotionEvent.ACTION_OUTSIDE)//{//message.what = 0;//}//else//{Log.d("listview item ontouch",list.get(position));bundle.putString("value",list.get(position));bundle.putInt("selectedIndex",position);message.setData(bundle);message.what = 1;//}//发送一个消息，在主界面里设置输入文本框的值this.handler.sendMessage(message);return true;}}/** * @description 记录列表项数据，绑定数据对象到每一个列表项 *  * @author Admin * @date 2014年5月9日 */public class ViewHoler{private TextView txtView;private ImageView imgBtn;/** * @description 列表项元素 * * @param position */public void setId(int position){this.txtView.setId(position);this.imgBtn.setId(position);}public TextView getTxtView(){return txtView;}public void setTxtView(TextView txtView){this.txtView = txtView;}public ImageView getImgBtn(){return imgBtn;}public void setImgBtn(ImageView imgBtn){this.imgBtn = imgBtn;}}}

5.在Activity里java代码片段

        PopupWindow ppwin = null;//工程名下拉列表的PopupwindowListView listView = null;ArrayList<String> proNames = new ArrayList<String>();PopupAdapter adapter = null;ImageButton arrowBtn = null;boolean isInit = false;@Overridepublic void onWindowFocusChanged(boolean hasFocus){super.onWindowFocusChanged(hasFocus);if(hasFocus){//每次当前activity获得当前焦点都重新读取sd下已经创建的项目目录Log.d("onWindowFocusChanged","重新获取工程目录");getProjectNamesfromSD();if(adapter != null && !adapter.isEmpty()){adapter.notifyDataSetChanged();}}while(!isInit){Log.d("EnrolmentActivity.onWindowFocusChanged","初始化popupwindow");initPopupWindow();isInit = true;}}/** * @description 从sd卡上读取项目名称，返回项目名称数据列表集合 * * @return */private void getProjectNamesfromSD(){proNames.clear();//如果SD卡当前是已安装和准备好读写的状态if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){File projectDir = new File(Environment.getExternalStorageDirectory(),"photepro");//如果工程文件目录存在if(projectDir.exists() && projectDir.isDirectory()){String[] _filesName = projectDir.list();for(String name : _filesName){if(!"tmp".equals(name)){proNames.add(name);}}}}}/** * @description 初始化PopupWindow * */private void initPopupWindow(){//handler = new PopupHandler(this);//项目名称下拉列表控件 下拉按钮arrowBtn = (ImageButton)findViewById(R.id.open_arrow_btn);arrowBtn.setOnClickListener(arrowBtnClick);View view = (View)this.getLayoutInflater().inflate(R.layout.proname_spinner,null);this.listView = (ListView)view.findViewById(R.id.proname_list);this.adapter = new PopupAdapter(EnrolmentActivity.this,proNames);listView.setAdapter(adapter);listView.setOnItemClickListener(pronameItemClick);ppwin = new PopupWindow(view,project.getWidth(),LayoutParams.WRAP_CONTENT);ColorDrawable cd = new ColorDrawable(-0000);ppwin.setBackgroundDrawable(cd);ppwin.setOutsideTouchable(true);ppwin.setTouchable(true);ppwin.setFocusable(true);ppwin.setTouchInterceptor(new View.OnTouchListener(){@Overridepublic boolean onTouch(View v, MotionEvent event){//如果点击了popwindow之外的地方if(event.getAction() == MotionEvent.ACTION_OUTSIDE){ppwin.dismiss();return true;}return false;}});}//工程名列表视图点选事件private AdapterView.OnItemClickListener pronameItemClick = new AdapterView.OnItemClickListener(){@Overridepublic void onItemClick(AdapterView<?> parent, View view, int position, long id){PopupAdapter.ViewHoler holder = (PopupAdapter.ViewHoler)view.getTag();project.setText(holder.getTxtView().getText());popupWinDismiss();}};/** * @description 关闭popupwindow * */public void popupWinDismiss(){ppwin.dismiss();}/** * @description 显示项目名称的popupwindow * */private void popwindowShowing(){ppwin.showAsDropDown(project);}

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