案例效果：

activity_main.xml

popup_window_layout.xml

MainActivity.java

package com.example.administrator.myapplication; import android.os.Bundle; import android.support.v7.app.ActionBarActivity; import android.util.DisplayMetrics; import android.view.Gravity; import android.view.View; import android.view.ViewGroup; import android.view.WindowManager; import android.widget.Button; import android.widget.PopupWindow; import android.widget.Toast; //PopupWindow public class MainActivity extends ActionBarActivity {
       @Override     protected void onCreate(Bundle savedInstanceState) {
           super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);     }     //按钮事件方法   public void showWindow(View v)   {
       View view=getLayoutInflater().inflate(R.layout.popup_window_layout,null);       //实例化创建popupWindow（窗体的视图，宽，高）对象       PopupWindow popupWindow=new PopupWindow(view, ViewGroup.LayoutParams.MATCH_PARENT,ViewGroup.LayoutParams.WRAP_CONTENT);       popupWindow.setBackgroundDrawable(getResources().getDrawable(android.R.drawable.btn_default)); popupWindow.setAnimationStyle(android.R.style.Animation_Translucent);//设置动画效果       popupWindow.getBackground().setAlpha(100);//设置透明度       popupWindow.setOutsideTouchable(true);//点击边上时候可以消失       popupWindow.setFocusable(true);//当前窗口获得焦点       popupWindow.setTouchable(true);//可以被触摸       popupWindow.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);//防止虚拟软键盘被弹出菜单遮住       popupWindow.showAtLocation(v, Gravity.BOTTOM, 0, 0); //获取设备屏幕尺寸，4.1之后使用       DisplayMetrics dm=new DisplayMetrics();       getWindowManager().getDefaultDisplay().getMetrics(dm);       int width=dm.widthPixels;       int height=dm.heightPixels;       //按钮事件       Button button_edit= (Button)view.findViewById(R.id.button_edit);       Button button_delete= (Button)view.findViewById(R.id.button_delete);       button_edit.setOnClickListener(new View.OnClickListener() {
             @Override           public void onClick(View v) {
                 Toast.makeText(MainActivity.this,"你点击的是编辑操作",Toast.LENGTH_SHORT).show();           }       });       button_delete.setOnClickListener(new View.OnClickListener() {
             @Override           public void onClick(View v) {
                 Toast.makeText(MainActivity.this,"你点击的是删除操作",Toast.LENGTH_SHORT).show();           }       });   } }