<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:tools="http://schemas.android.com/tools"
 android:id="@+id/layout_main"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:paddingBottom="@dimen/activity_vertical_margin"
 android:paddingLeft="@dimen/activity_horizontal_margin"
 android:paddingRight="@dimen/activity_horizontal_margin"
 android:paddingTop="@dimen/activity_vertical_margin"
 tools:context=".MainActivity" >

 <Button
  android:id="@+id/btn_test_popupwindow"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_centerInParent="true"
  android:text="@string/app_name" />

</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:background="#000000" >

 <TextView
  android:layout_width="wrap_content"
  android:layout_height="80dp"
  android:text="@string/app_name" 
  android:textColor="#ffffffff"
  android:layout_centerInParent="true"
  android:gravity="center"/>

</RelativeLayout>

public class MainActivity extends Activity {

 private Button mButton;
 private PopupWindow mPopupWindow;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);

  View popupView = getLayoutInflater().inflate(R.layout.layout_popupwindow,null);

  mPopupWindow = new PopupWindow(popupView,LayoutParams.MATCH_PARENT,LayoutParams.WRAP_CONTENT,true);
  mPopupWindow.setTouchable(true);
  mPopupWindow.setoutsidetouchable(true);
  mPopupWindow.setBackgroundDrawable(new BitmapDrawable(getResources(),(Bitmap) null));

  mButton = (Button) findViewById(R.id.btn_test_popupwindow);
  mButton.setonClickListener(new OnClickListener() {

   @Override
   public void onClick(View v) {
    mPopupWindow.showAsDropDown(v);
   }
  });
 }
}

mPopupWindow.setTouchable(true);
mPopupWindow.setoutsidetouchable(true);
mPopupWindow.setBackgroundDrawable(new BitmapDrawable(getResources(),(Bitmap) null));

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >

 <translate
  android:duration="250"
  android:fromYDelta="100.0%"
  android:toYDelta="0.0" />

</set>

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >

 <translate
  android:duration="250"
  android:fromYDelta="0.0"
  android:toYDelta="100%" />

</set>

 <style name="anim_menu_bottombar">
  <item name="android:windowEnteranimation">@anim/menu_bottombar_in</item>
  <item name="android:windowExitAnimation">@anim/menu_bottombar_out</item>
 </style>

public class MainActivity extends Activity {

 private PopupWindow mPopupWindow;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);

  View popupView = getLayoutInflater().inflate(R.layout.layout_popupwindow,(Bitmap) null));

  mPopupWindow.getContentView().setFocusableInTouchMode(true);
  mPopupWindow.getContentView().setFocusable(true);
  mPopupWindow.getContentView().setonKeyListener(new OnKeyListener() {
   @Override
   public boolean onKey(View v,int keyCode,KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_MENU && event.getRepeatCount() == 0
      && event.getAction() == KeyEvent.ACTION_DOWN) {
     if (mPopupWindow != null && mPopupWindow.isShowing()) {
      mPopupWindow.dismiss();
     }
     return true;
    }
    return false;
   }
  });
 }

 @Override
 public boolean onKeyDown(int keyCode,KeyEvent event) {
  if (keyCode == KeyEvent.KEYCODE_MENU && event.getRepeatCount() == 0) {
   if (mPopupWindow != null && !mPopupWindow.isShowing()) {
    mPopupWindow.showAtLocation(findViewById(R.id.layout_main),Gravity.BottOM,0);
   }
   return true;
  }
  return super.onKeyDown(keyCode,event);
 }
}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Data;
using System.Text;
using System.Windows.Forms;
 
namespace ColorHelper
{
    /// <summary>
    /// 自定义颜色控件
    /// </summary>
    public partial class ColorSelector : UserControl
    {
        
        //接收传递的参数，文本框和键值对的数据。
        public Control textBox = new Control();
        public Dictionary<string, string> dict = new Dictionary<string, string>();
 
        public Dictionary<string, string> Dict
        {
            get { return dict; }
            set
            {
                dict = value;
            }
        }
 
        //构造函数
        public ColorSelector()
        {
            InitializeComponent();
        }
 
        //选中的Text值
        private string selectText;
 
        public string SelectedText
        {
            get { return selectText; }
            set
            {
                selectText = value;
            }
        }
 
        //选中的Key值
        private string selectKey;
 
        public string SelectedKey
        {
            get { return selectKey; }
            set
            {
                selectKey = value;
            }
        }
 
        /// <summary>
        /// 生成Button
        /// </summary>
        public void LoadButton()
        {
            //情况panel中原来的所有控件
            flowLayoutPanel1.Controls.Clear();
 
            //根据传递的dict键值对生成Button，并设置button的大小，Text，Tag值，以及绑定鼠标点击事件。
            foreach (KeyValuePair<string, string> temp in dict)
            {
                Button button1 = new Button();
                button1.Text = temp.Value;
                button1.Tag = temp.Key;
                button1.Font = new Font("宋体", 22);
                button1.AutoSize = true;
                button1.Width = 120;
                button1.MouseClick += new MouseEventHandler(button_MouseClick);
                flowLayoutPanel1.Controls.Add(button1);
            }
        }
 
  
        /// <summary>
        /// 绑定到button上的事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button_MouseClick(object sender, MouseEventArgs e)
        {
            //声明一个button，获取到button上的Text和Tag上的值，分别是value和key。
            Button cb = (Button)sender;        
            selectText = cb.Text;
            selectKey = cb.Tag.ToString();
            //将value和key分别给textBox的Text和Tag。
            textBox.Text = selectText;
            textBox.Tag = selectKey;
            //重绘textBox
            textBox.Invalidate();
            textBox.Enabled = true;
            //隐藏控件，并将控件所在的Form关闭
            this.Visible = false;
            this.FindForm().Close();
        }
  
    }
 
}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
 
namespace colorTest
{
    public partial class Form1 : Form
    {
        //接收textBox和dict数据
        public TextBox textBox;
        public Dictionary<string, string> dict;
 
        //有参构造函数，接收Form1传递的值
        public Form1(TextBox textBox, Dictionary<string, string> dict)
        {
            InitializeComponent();
            this.textBox = textBox;
            this.dict = dict;
        }
 
        //加载时将textBox和Dict给自定义控件，并生成button按钮，最后显示button框
        private void Form1_Load(object sender, EventArgs e)
        {
            //设置重画控件
            colorSelector1.textBox = textBox;
     
            //返回到自定义用户控件上
            colorSelector1.Dict = dict;
            colorSelector1.LoadButton();
            //设置弹出事件
            colorSelector1.Visible = true;
        }
 
       
    }
}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
 
namespace colorTest
{
    public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();
        }
 
        private void textBox2_MouseClick(object sender, MouseEventArgs e)
        {
            //先去查询数据,获取到返回值为实体数组,转成Dictionary<string,string>
            Dictionary<string, string> dict = new Dictionary<string, string>();
            dict.Add("1", "汽油");
            dict.Add("2", "柴油");
            dict.Add("3", "煤油");
            dict.Add("4", "4油");
            Form1 form = new Form1(this.textBox2, dict);
            form.Size = new Size(10, 10);
            //MessageBox.Show(textBox2.Location.X + " " + textBox2.Height + " " + textBox2.Location.Y + " " + textBox2.Width + " ");
            //form.Location = new Point(textBox2.Location.X + this.Location.X, this.Location.Y + textBox2.Location.Y - textBox2.Height);
            //MessageBox.Show(textBox2.Location.X + " " + textBox2.Height+" "+ textBox2.Location.Y+" " +textBox2.Width+ " " );
            //form.Location = new Point(textBox2.Location.X - textBox2.Height, textBox2.Location.Y - textBox2.Width);
            //MessageBox.Show(this.Location.X + " " + this.Location.Y );
            //每行显示5个button按钮
            if (dict.Count >= 5)
            {
                //并且设置5个时，form的size，直接为626，这个是多次测试过得到的结果。
                form.Size = new Size(626, 33 * (dict.Count / 5 + 1));
            }
            else
            {
                form.Size = new Size(125 * dict.Count, 33);
            }
 
            //form的弹出位置，必须要设置Form2的startposition为自定义，否则不管用。
            //在窗体的x的基础上，加上textBox的x坐标，就能控制弹出框的x坐标，而窗体的y坐标加上窗体的y坐标，还要考虑form的height
            form.Location = new Point(textBox2.Location.X + this.Location.X, this.Location.Y + textBox2.Location.Y - 15 * (dict.Count / 5 + 1));
            
            //弹出form
            form.ShowDialog();
           
        }
 
        /// <summary>
        /// textBox1的鼠标点击事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void textBox1_MouseClick(object sender, MouseEventArgs e)
        {
            //先去查询数据,获取到返回值为实体数组,转成Dictionary<string,string>
            Dictionary<string, string> dict = new Dictionary<string, string>();
            dict.Add("1", "汽油");
            dict.Add("2", "柴油");
            dict.Add("3", "煤油");
            dict.Add("4", "4油");
            dict.Add("5", "5油");
            dict.Add("7", "6油");
            dict.Add("8", "7油");
            dict.Add("9", "8油");
            dict.Add("10", "9油");
            dict.Add("11", "10油");
            dict.Add("12", "6油");
            dict.Add("13", "7油");
            dict.Add("14", "8油");
            dict.Add("15", "9油");
            dict.Add("16", "10油");
            Form1 form = new Form1(this.textBox1, dict);
            
            if (dict.Count >= 5)
            {
                form.Size = new Size(626, 33 * (dict.Count/5+1));
            }
            else
            {
                form.Size = new Size(125 * dict.Count, 33);
            }
            form.Location = new Point(textBox2.Location.X + this.Location.X, this.Location.Y + textBox2.Location.Y -15*(dict.Count/5+1));
          
          
            form.ShowDialog();
        }
    }
}

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