android 仿微信底部弹出菜单

最近在网上看了一些文章介绍使用PopupWindow实现微信弹出菜单，于是乎自己也实现了一下，分享一下！

原理：主要是 popupWindow.setAnimationStyle(R.style.popuStyle);//设置 popupWindow 动画样式

运行效果截图

package com.example.test;import android.app.Activity;import android.graphics.drawable.BitmapDrawable;import android.os.Bundle;import android.view.Gravity;import android.view.LayoutInflater;import android.view.View;import android.view.View.OnClickListener;import android.view.ViewGroup.LayoutParams;import android.widget.Button;import android.widget.LinearLayout;import android.widget.PopupWindow;public class MainActivity extends Activity implements OnClickListener {private PopupWindow popupWindow;private Button bt_popup;protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);findView();}private void findView() {bt_popup = (Button) findViewById(R.id.bt_popup);bt_popup.setOnClickListener(this);}private void showPopupWindow() {View view = (LinearLayout) LayoutInflater.from(MainActivity.this).inflate(R.layout.popmenu, null);Button bt_clear = (Button) view.findViewById(R.id.bt_clear);Button bt_exit = (Button) view.findViewById(R.id.bt_exit);bt_clear.setOnClickListener(this);bt_exit.setOnClickListener(this);if (popupWindow == null) {popupWindow = new PopupWindow(MainActivity.this);popupWindow.setBackgroundDrawable(new BitmapDrawable());//popupWindow.setFocusable(true); // 设置PopupWindow可获得焦点popupWindow.setTouchable(true); // 设置PopupWindow可触摸popupWindow.setOutsideTouchable(true); // 设置非PopupWindow区域可触摸popupWindow.setContentView(view);popupWindow.setWidth(LayoutParams.MATCH_PARENT);popupWindow.setHeight(LayoutParams.WRAP_CONTENT);popupWindow.setAnimationStyle(R.style.popuStyle);//设置 popupWindow 动画样式}popupWindow.showAtLocation(bt_popup, Gravity.BOTTOM, 0, 0);popupWindow.update();}@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.bt_popup:showPopupWindow();break;case R.id.bt_exit:popupWindow.dismiss();break;case R.id.bt_clear:popupWindow.dismiss();break;default:break;}}}

注意：popupWindow 的 showAtLocation(parent, gravity, x, y); 方法第一个参数 parent 并不一定要求是 Activity 布局中的根节点元素，这里我传入了一个 Button

阅读官方文档中的说明

parent a parent view to get the android.view.View.getWindowToken() token from

只是根据这个parent 获取 WindowToken 而已

popupWindow 动画样式

popup_anim_in.xml

<?xml version="1.0" encoding="utf-8"?>

popup_anim_out.xml

<?xml version="1.0" encoding="utf-8"?>

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