AndroidPopupWindow实现右侧、左侧和底部弹出菜单

package com.example.popupleftmenu; 
 
import android.app.Activity; 
import android.content.Context; 
import android.graphics.drawable.ColorDrawable; 
import android.os.Bundle; 
import android.view.Gravity; 
import android.view.MotionEvent; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.view.View.OnTouchListener; 
import android.view.ViewGroup.LayoutParams; 
import android.view.WindowManager; 
import android.widget.Button; 
import android.widget.PopupWindow; 
import android.widget.Toast; 
 
public class MainActivity extends Activity { 
 
 private Context cOntext= null; 
 private PopupWindow popupWindow; 
 private int from = 0; 
  
 @Override 
 protected void onCreate(Bundle savedInstanceState) { 
  super.onCreate(savedInstanceState); 
  cOntext= this; 
  setContentView(R.layout.activity_main); 
  Button popLeftBtn = (Button)findViewById(R.id.pop_left_btn); 
  Button popRightBtn = (Button)findViewById(R.id.pop_right_btn); 
  Button popBottomBtn = (Button)findViewById(R.id.pop_bottom_btn); 
  popLeftBtn.setOnClickListener(popClick); 
  popRightBtn.setOnClickListener(popClick); 
  popBottomBtn.setOnClickListener(popClick); 
 } 
 
  
 OnClickListener popClick = new OnClickListener() { 
   
  @Override 
  public void onClick(View v) { 
   switch(v.getId()){ 
    case R.id.pop_left_btn:{ 
     from = Location.LEFT.ordinal(); 
     break; 
    } 
    case R.id.pop_right_btn:{ 
     from = Location.RIGHT.ordinal(); 
     break; 
    } 
    case R.id.pop_bottom_btn:{ 
     from = Location.BOTTOM.ordinal(); 
     break; 
    } 
   } 
    
   //调用此方法，menu不会顶置 
   //popupWindow.showAsDropDown(v); 
   initPopupWindow(); 
    
  } 
 }; 
 /** 
  * 添加新笔记时弹出的popWin关闭的事件，主要是为了将背景透明度改回来 
  * 
  */ 
 class popupDismissListener implements PopupWindow.OnDismissListener{ 
 
  @Override 
  public void onDismiss() { 
   backgroundAlpha(1f); 
  } 
   
 } 
  
  
 protected void initPopupWindow(){ 
  View popupWindowView = getLayoutInflater().inflate(R.layout.pop, null); 
  //内容，高度，宽度 
  if(Location.BOTTOM.ordinal() == from){ 
   popupWindow = new PopupWindow(popupWindowView, LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT, true); 
  }else{ 
   popupWindow = new PopupWindow(popupWindowView, LayoutParams.WRAP_CONTENT, LayoutParams.FILL_PARENT, true); 
  } 
  //动画效果 
  if(Location.LEFT.ordinal() == from){ 
   popupWindow.setAnimationStyle(R.style.AnimationLeftFade); 
  }else if(Location.RIGHT.ordinal() == from){ 
   popupWindow.setAnimationStyle(R.style.AnimationRightFade); 
  }else if(Location.BOTTOM.ordinal() == from){ 
   popupWindow.setAnimationStyle(R.style.AnimationBottomFade); 
  } 
  //菜单背景色 
  ColorDrawable dw = new ColorDrawable(0xffffffff); 
  popupWindow.setBackgroundDrawable(dw); 
  //宽度 
  //popupWindow.setWidth(LayoutParams.WRAP_CONTENT); 
  //高度 
  //popupWindow.setHeight(LayoutParams.FILL_PARENT); 
  //显示位置 
  if(Location.LEFT.ordinal() == from){ 
   popupWindow.showAtLocation(getLayoutInflater().inflate(R.layout.activity_main, null), Gravity.LEFT, 0, 500); 
  }else if(Location.RIGHT.ordinal() == from){ 
   popupWindow.showAtLocation(getLayoutInflater().inflate(R.layout.activity_main, null), Gravity.RIGHT, 0, 500); 
  }else if(Location.BOTTOM.ordinal() == from){ 
   popupWindow.showAtLocation(getLayoutInflater().inflate(R.layout.activity_main, null), Gravity.BOTTOM|Gravity.CENTER_HORIZONTAL, 0, 0); 
  } 
  //设置背景半透明 
  backgroundAlpha(0.5f); 
  //关闭事件 
  popupWindow.setOnDismissListener(new popupDismissListener()); 
   
  popupWindowView.setOnTouchListener(new OnTouchListener() { 
    
   @Override 
   public boolean onTouch(View v, MotionEvent event) { 
    /*if( popupWindow!=null && popupWindow.isShowing()){ 
     popupWindow.dismiss(); 
     popupWindow=null; 
    }*/ 
    // 这里如果返回true的话，touch事件将被拦截 
    // 拦截后 PopupWindow的onTouchEvent不被调用，这样点击外部区域无法dismiss 
    return false; 
   } 
  }); 
   
  Button open = (Button)popupWindowView.findViewById(R.id.open); 
  Button save = (Button)popupWindowView.findViewById(R.id.save); 
  Button close = (Button)popupWindowView.findViewById(R.id.close); 
   
   
  open.setOnClickListener(new OnClickListener() { 
    
   @Override 
   public void onClick(View v) { 
    Toast.makeText(context, "Open", Toast.LENGTH_LONG).show(); 
    popupWindow.dismiss(); 
   } 
  }); 
   
  save.setOnClickListener(new OnClickListener() { 
    
   @Override 
   public void onClick(View v) { 
    Toast.makeText(context, "Open", Toast.LENGTH_LONG).show(); 
    popupWindow.dismiss(); 
   } 
  }); 
   
  close.setOnClickListener(new OnClickListener() { 
    
   @Override 
   public void onClick(View v) { 
    Toast.makeText(context, "Open", Toast.LENGTH_LONG).show(); 
    popupWindow.dismiss(); 
   } 
  }); 
 } 
  
 /** 
  * 设置添加屏幕的背景透明度 
  * @param bgAlpha 
  */ 
 public void backgroundAlpha(float bgAlpha) 
 { 
  WindowManager.LayoutParams lp = getWindow().getAttributes(); 
  lp.alpha = bgAlpha; //0.0-1.0 
  getWindow().setAttributes(lp); 
 } 
 /** 
  * 菜单弹出方向 
  * 
  */ 
 public enum Location { 
 
  LEFT, 
  RIGHT, 
  TOP, 
  BOTTOM; 
   
 } 
} 

<&＃63;xml version="1.0" encoding="utf-8"&＃63;> 
 
  
  
   
   
   
   
   
   
   
  
  
 

弹出左侧菜单 
 弹出右侧菜单 
 弹出底部菜单 
 打开 
 保存 
 关闭 

<&＃63;xml version="1.0" encoding="utf-8"&＃63;> 
 
  
  
  
 

<&＃63;xml version="1.0" encoding="utf-8"&＃63;>