Android 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()
    	 */
    	@Override
    	public int getCount()
    	{
    		return this.list != null ? list.size() : 0;
    	}
    
    	/* (non-Javadoc)
    	 * @see android.widget.Adapter#getItem(int)
    	 */
    	@Override
    	public Object getItem(int position)
    	{
    		return list.get(position);
    	}
    
    	/* (non-Javadoc)
    	 * @see android.widget.Adapter#getItemId(int)
    	 */
    	@Override
    	public long getItemId(int position)
    	{
    		return position;
    	}
    
    	/* (non-Javadoc)
    	 * @see android.widget.Adapter#getView(int, android.view.View, android.view.ViewGroup)
    	 */
    	@Override
    	public 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;
    		}
    		
    		@Override
    		public 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Popupwindow
    	ListView listView = null;
    	ArrayList<String> proNames = new ArrayList<String>();
    	PopupAdapter adapter = null;
    	ImageButton arrowBtn = null;
    	boolean isInit = false;
    
    	@Override
    	public 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()
    		{
    			
    			@Override
    			public 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()
    	{
    
    		@Override
    		public 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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    转载自yuxiatongzhi.iteye.com/blog/2067343