对PopupWindow常用API的简单封装，几行代码就搞定PopupWindow弹窗，使用Builder模式，链式调用，像使用AlertDialog 一样
来源：互联网 发布：java工程师面试题 编辑：程序博客网 时间：2024/05/21 21:33
示例效果图：
这是他的GitHub挺不错的
原方法在最下面，就只有一个类，很简洁很方便！
使用方法
更新1:背景变暗配置示例：
//创建并显示popWindow mCustomPopWindow= new CustomPopWindow.PopupWindowBuilder(this) .setView(contentView) .enableBackgroundDark(true) //弹出popWindow时，背景是否变暗 .setBgDarkAlpha(0.7f) // 控制亮度 .create() .showAsDropDown(mButton5,0,20);更新2:显示消失动画配置：
CustomPopWindow popWindow = new CustomPopWindow.PopupWindowBuilder(this) .setView(R.layout.pop_layout1) .setFocusable(true) .setOutsideTouchable(true) .setAnimationStyle(R.style.CustomPopWindowStyle) // 添加自定义显示和消失动画 .create() .showAsDropDown(mButton1,0,10);更新3:点击PopupWindow以外区域不让关闭(默认DisMiss)：
mPopWindow = new CustomPopWindow.PopupWindowBuilder(this) .setView(view) .enableOutsideTouchableDissmiss(false)// 设置点击PopupWindow之外的地方，popWindow不关闭，如果不设置这个属性或者为true，则关闭 .create(); mPopWindow.showAsDropDown(mButton7,0,10);1，简便写法
CustomPopWindow popWindow = new CustomPopWindow.PopupWindowBuilder(this) .setView(R.layout.pop_layout1)//显示的布局，还可以通过设置一个View // .size(600,400) //设置显示的大小，不设置就默认包裹内容 .setFocusable(true)//是否获取焦点，默认为ture .setOutsideTouchable(true)//是否PopupWindow 以外触摸dissmiss .create()//创建PopupWindow .showAsDropDown(mButton1,0,10);//显示PopupWindow以上就是弹出一个简单的PopupWindow，是不是看起来很优雅和简单，还可以简单一点：
CustomPopWindow popWindow = new CustomPopWindow.PopupWindowBuilder(this) .setView(R.layout.pop_layout1)//显示的布局 .create()//创建PopupWindow .showAsDropDown(mButton1,0,10);//显示PopupWindow如果是一个简单的只展示文案的弹窗，就可以只设置一个View，就可以了，很简单吧！！！
2，展示一个PopupWindow 弹窗菜单（像手机QQ，微信的顶部菜单）
View contentView = LayoutInflater.from(this).inflate(R.layout.pop_menu,null); //处理popWindow 显示内容 handleLogic(contentView); //创建并显示popWindow mCustomPopWindow= new CustomPopWindow.PopupWindowBuilder(this) .setView(contentView) .create() .showAsDropDown(mButton3,0,20);如果PopupWindow 展示的内容需要在程序代码中设置或者响应点击事件等，可以现获取到这个View，然后处理一些显示和点击事件逻辑，再交给CustomPopWindow 创建显示。比如响应菜单点击事件的逻辑处理：
/** * 处理弹出显示内容、点击事件等逻辑 * @param contentView */ private void handleLogic(View contentView){ View.OnClickListener listener = new View.OnClickListener() { @Override public void onClick(View v) { if(mCustomPopWindow!=null){ mCustomPopWindow.dissmiss(); } String showContent = ""; switch (v.getId()){ case R.id.menu1: showContent = "点击 Item菜单1"; break; case R.id.menu2: showContent = "点击 Item菜单2"; break; case R.id.menu3: showContent = "点击 Item菜单3"; break; case R.id.menu4: showContent = "点击 Item菜单4"; break; case R.id.menu5: showContent = "点击 Item菜单5" ; break; } Toast.makeText(MainActivity.this,showContent,Toast.LENGTH_SHORT).show(); } }; contentView.findViewById(R.id.menu1).setOnClickListener(listener); contentView.findViewById(R.id.menu2).setOnClickListener(listener); contentView.findViewById(R.id.menu3).setOnClickListener(listener); contentView.findViewById(R.id.menu4).setOnClickListener(listener); contentView.findViewById(R.id.menu5).setOnClickListener(listener); }}3,展示一个ListView,其实跟上面是一样的，这里贴一下实例代码：
private void showPopListView(){ View contentView = LayoutInflater.from(this).inflate(R.layout.pop_list,null); //处理popWindow 显示内容 handleListView(contentView); //创建并显示popWindow mListPopWindow= new CustomPopWindow.PopupWindowBuilder(this) .setView(contentView) .size(ViewGroup.LayoutParams.MATCH_PARENT,ViewGroup.LayoutParams.MATCH_PARENT)//显示大小 .create() .showAsDropDown(mButton4,0,20); } private void handleListView(View contentView){ RecyclerView recyclerView = (RecyclerView) contentView.findViewById(R.id.recyclerView); LinearLayoutManager manager = new LinearLayoutManager(this); manager.setOrientation(LinearLayoutManager.VERTICAL); recyclerView.setLayoutManager(manager); MyAdapter adapter = new MyAdapter(); adapter.setData(mockData()); recyclerView.setAdapter(adapter); adapter.notifyDataSetChanged(); }他的依赖里面只有这一个类，很不错，很有想法！【可以直接用，也可以看看他的GitHub介绍】
package com.example.zhouwei.library;import android.app.Activity;import android.content.Context;import android.graphics.Color;import android.graphics.drawable.ColorDrawable;import android.os.Build;import android.support.annotation.RequiresApi;import android.util.Log;import android.view.KeyEvent;import android.view.LayoutInflater;import android.view.MotionEvent;import android.view.View;import android.view.ViewGroup;import android.view.Window;import android.view.WindowManager;import android.widget.PopupWindow;/** * * 自定义PopWindow类，封装了PopWindow的一些常用属性，用Builder模式支持链式调用 * Created by zhouwei on 16/11/28. */public class CustomPopWindow implements PopupWindow.OnDismissListener{ private static final String TAG = "CustomPopWindow"; private static final float DEFAULT_ALPHA = 0.7f; private Context mContext; private int mWidth; private int mHeight; private boolean mIsFocusable = true; private boolean mIsOutside = true; private int mResLayoutId = -1; private View mContentView; private PopupWindow mPopupWindow; private int mAnimationStyle = -1; private boolean mClippEnable = true;//default is true private boolean mIgnoreCheekPress = false; private int mInputMode = -1; private PopupWindow.OnDismissListener mOnDismissListener; private int mSoftInputMode = -1; private boolean mTouchable = true;//default is ture private View.OnTouchListener mOnTouchListener; private Window mWindow;//当前Activity 的窗口 /** * 弹出PopWindow 背景是否变暗，默认不会变暗。 */ private boolean mIsBackgroundDark = false; private float mBackgroundDrakValue = 0;// 背景变暗的值，0 - 1 /** * 设置是否允许点击 PopupWindow之外的地方，关闭PopupWindow */ private boolean enableOutsideTouchDisMiss = true;// 默认点击pop之外的地方可以关闭 private CustomPopWindow(Context context){ mContext = context; } public int getWidth() { return mWidth; } public int getHeight() { return mHeight; } /** * * @param anchor * @param xOff * @param yOff * @return */ public CustomPopWindow showAsDropDown(View anchor, int xOff, int yOff){ if(mPopupWindow!=null){ mPopupWindow.showAsDropDown(anchor,xOff,yOff); } return this; } public CustomPopWindow showAsDropDown(View anchor){ if(mPopupWindow!=null){ mPopupWindow.showAsDropDown(anchor); } return this; } @RequiresApi(api = Build.VERSION_CODES.KITKAT) public CustomPopWindow showAsDropDown(View anchor, int xOff, int yOff, int gravity){ if(mPopupWindow!=null){ mPopupWindow.showAsDropDown(anchor,xOff,yOff,gravity); } return this; } /** * 相对于父控件的位置（通过设置Gravity.CENTER，下方Gravity.BOTTOM等 ），可以设置具体位置坐标 * @param parent 父控件 * @param gravity * @param x the popup's x location offset * @param y the popup's y location offset * @return */ public CustomPopWindow showAtLocation(View parent, int gravity, int x, int y){ if(mPopupWindow!=null){ mPopupWindow.showAtLocation(parent,gravity,x,y); } return this; } /** * 添加一些属性设置 * @param popupWindow */ private void apply(PopupWindow popupWindow){ popupWindow.setClippingEnabled(mClippEnable); if(mIgnoreCheekPress){ popupWindow.setIgnoreCheekPress(); } if(mInputMode!=-1){ popupWindow.setInputMethodMode(mInputMode); } if(mSoftInputMode!=-1){ popupWindow.setSoftInputMode(mSoftInputMode); } if(mOnDismissListener!=null){ popupWindow.setOnDismissListener(mOnDismissListener); } if(mOnTouchListener!=null){ popupWindow.setTouchInterceptor(mOnTouchListener); } popupWindow.setTouchable(mTouchable); } private PopupWindow build(){ if(mContentView == null){ mContentView = LayoutInflater.from(mContext).inflate(mResLayoutId,null); } // 2017.3.17 add // 获取当前Activity的window Activity activity = (Activity) mContentView.getContext(); if(activity!=null && mIsBackgroundDark){ //如果设置的值在0 - 1的范围内，则用设置的值，否则用默认值 final float alpha = (mBackgroundDrakValue > 0 && mBackgroundDrakValue < 1) ? mBackgroundDrakValue : DEFAULT_ALPHA; mWindow = activity.getWindow(); WindowManager.LayoutParams params = mWindow.getAttributes(); params.alpha = alpha; mWindow.addFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND); mWindow.setAttributes(params); } if(mWidth != 0 && mHeight!=0 ){ mPopupWindow = new PopupWindow(mContentView,mWidth,mHeight); }else{ mPopupWindow = new PopupWindow(mContentView, ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); } if(mAnimationStyle!=-1){ mPopupWindow.setAnimationStyle(mAnimationStyle); } apply(mPopupWindow);//设置一些属性 if(mWidth == 0 || mHeight == 0){ mPopupWindow.getContentView().measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED); //如果外面没有设置宽高的情况下，计算宽高并赋值 mWidth = mPopupWindow.getContentView().getMeasuredWidth(); mHeight = mPopupWindow.getContentView().getMeasuredHeight(); } // 添加dissmiss 监听 mPopupWindow.setOnDismissListener(this); //2017.6.27 add:fix 设置 setOutsideTouchable（false）点击外部取消的bug. // 判断是否点击PopupWindow之外的地方关闭 popWindow if(!enableOutsideTouchDisMiss){ //注意这三个属性必须同时设置，不然不能disMiss，以下三行代码在Android 4.4 上是可以，然后在Android 6.0以上，下面的三行代码就不起作用了，就得用下面的方法 mPopupWindow.setFocusable(true); mPopupWindow.setOutsideTouchable(false); mPopupWindow.setBackgroundDrawable(null); //注意下面这三个是contentView 不是PopupWindow mPopupWindow.getContentView().setFocusable(true); mPopupWindow.getContentView().setFocusableInTouchMode(true); mPopupWindow.getContentView().setOnKeyListener(new View.OnKeyListener() { @Override public boolean onKey(View v, int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK) { mPopupWindow.dismiss(); return true; } return false; } }); //在Android 6.0以上 ，只能通过拦截事件来解决 mPopupWindow.setTouchInterceptor(new View.OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { final int x = (int) event.getX(); final int y = (int) event.getY(); if ((event.getAction() == MotionEvent.ACTION_DOWN) && ((x < 0) || (x >= mWidth) || (y < 0) || (y >= mHeight))) { Log.e(TAG,"out side "); Log.e(TAG,"width:"+mPopupWindow.getWidth()+"height:"+mPopupWindow.getHeight()+" x:"+x+" y :"+y); return true; } else if (event.getAction() == MotionEvent.ACTION_OUTSIDE) { Log.e(TAG,"out side ..."); return true; } return false; } }); }else{ mPopupWindow.setFocusable(mIsFocusable); mPopupWindow.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT)); mPopupWindow.setOutsideTouchable(mIsOutside); } // update mPopupWindow.update(); return mPopupWindow; } @Override public void onDismiss() { dissmiss(); } /** * 关闭popWindow */ public void dissmiss(){ if(mOnDismissListener!=null){ mOnDismissListener.onDismiss(); } //如果设置了背景变暗，那么在dissmiss的时候需要还原 if(mWindow!=null){ WindowManager.LayoutParams params = mWindow.getAttributes(); params.alpha = 1.0f; mWindow.setAttributes(params); } if(mPopupWindow!=null && mPopupWindow.isShowing()){ mPopupWindow.dismiss(); } } public PopupWindow getPopupWindow() { return mPopupWindow; } public static class PopupWindowBuilder{ private CustomPopWindow mCustomPopWindow; public PopupWindowBuilder(Context context){ mCustomPopWindow = new CustomPopWindow(context); } public PopupWindowBuilder size(int width,int height){ mCustomPopWindow.mWidth = width; mCustomPopWindow.mHeight = height; return this; } public PopupWindowBuilder setFocusable(boolean focusable){ mCustomPopWindow.mIsFocusable = focusable; return this; } public PopupWindowBuilder setView(int resLayoutId){ mCustomPopWindow.mResLayoutId = resLayoutId; mCustomPopWindow.mContentView = null; return this; } public PopupWindowBuilder setView(View view){ mCustomPopWindow.mContentView = view; mCustomPopWindow.mResLayoutId = -1; return this; } public PopupWindowBuilder setOutsideTouchable(boolean outsideTouchable){ mCustomPopWindow.mIsOutside = outsideTouchable; return this; } /** * 设置弹窗动画 * @param animationStyle * @return */ public PopupWindowBuilder setAnimationStyle(int animationStyle){ mCustomPopWindow.mAnimationStyle = animationStyle; return this; } public PopupWindowBuilder setClippingEnable(boolean enable){ mCustomPopWindow.mClippEnable =enable; return this; } public PopupWindowBuilder setIgnoreCheekPress(boolean ignoreCheekPress){ mCustomPopWindow.mIgnoreCheekPress = ignoreCheekPress; return this; } public PopupWindowBuilder setInputMethodMode(int mode){ mCustomPopWindow.mInputMode = mode; return this; } public PopupWindowBuilder setOnDissmissListener(PopupWindow.OnDismissListener onDissmissListener){ mCustomPopWindow.mOnDismissListener = onDissmissListener; return this; } public PopupWindowBuilder setSoftInputMode(int softInputMode){ mCustomPopWindow.mSoftInputMode = softInputMode; return this; } public PopupWindowBuilder setTouchable(boolean touchable){ mCustomPopWindow.mTouchable = touchable; return this; } public PopupWindowBuilder setTouchIntercepter(View.OnTouchListener touchIntercepter){ mCustomPopWindow.mOnTouchListener = touchIntercepter; return this; } /** * 设置背景变暗是否可用 * @param isDark * @return */ public PopupWindowBuilder enableBackgroundDark(boolean isDark){ mCustomPopWindow.mIsBackgroundDark = isDark; return this; } /** * 设置背景变暗的值 * @param darkValue * @return */ public PopupWindowBuilder setBgDarkAlpha(float darkValue){ mCustomPopWindow.mBackgroundDrakValue = darkValue; return this; } /** * 设置是否允许点击 PopupWindow之外的地方，关闭PopupWindow * @param disMiss * @return */ public PopupWindowBuilder enableOutsideTouchableDissmiss(boolean disMiss){ mCustomPopWindow.enableOutsideTouchDisMiss = disMiss; return this; } public CustomPopWindow create(){ //构建PopWindow mCustomPopWindow.build(); return mCustomPopWindow; } }}阅读全文
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