ActionBar(16)自定义操作提供器ActionProvider之返回ActionView

package com.e.acationbar;

import android.content.Context;
import android.graphics.drawable.ColorDrawable;
import android.view.ActionProvider;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View.OnClickListener;
import android.view.View.OnKeyListener;
import android.view.View.OnTouchListener;
import android.view.WindowManager;
import android.view.View;
import android.widget.ImageView;
import android.widget.PopupWindow;
import android.widget.Toast;

public class CustomActionProviderWithActionView extends ActionProvider implements
        OnClickListener, OnTouchListener, OnKeyListener {

    private final Context context;// 上下文
    private View actionView;//action view

    private PopupWindow mPopupWindow;//popup window 里有个view,view显示的像个menu
    private View mMenu;                //popup window 里的显示控件
    

    private void initPopupMenu(){
        
        LayoutInflater lif = LayoutInflater.from(context);

        mMenu = lif.inflate(R.layout.popup_window_menu, null);
        mMenu.setAlpha(1.0f);//内部view的透明度
        //不用setBackgroundDrawable的时候必须加这句才能back键和menu键退出  
//        mMenu.setFocusableInTouchMode(true);
//        mMenu.setOnKeyListener(this);
//        mMenu.setOnTouchListener(this);
        
        mPopupWindow = new PopupWindow(mMenu,
                WindowManager.LayoutParams.WRAP_CONTENT,
                WindowManager.LayoutParams.WRAP_CONTENT);
        
        
        /*
         * setBackgroundDrawable很重要,没有这个函数 back键和menu键关闭popwindow 很麻烦,
         * 有了它以后,就不用为popwindow内的控件分别设置setOnKeyListener和setOnTouchListener了
         * 可以同时支持back返回和点popwindow外面关闭popwindow,
         */
        //0x7f0f0f0f = argb
        mPopupWindow.setBackgroundDrawable(new ColorDrawable(0xff0f0f0f));//0xff不透明
        //bg为透明的图片
        //mPopupWindow.setBackgroundDrawable(context.getResources().getDrawable(R.drawable.bg));
        
        mPopupWindow.setFocusable(true);
        mPopupWindow.setOutsideTouchable(true);
        mPopupWindow.setAnimationStyle(R.anim.popwindow_anim);

        
        mMenu.findViewById(R.id.imgBtn_in_popup_window).setOnClickListener(this);
        mMenu.findViewById(R.id.btn1_popup_window).setOnClickListener(this);
        mMenu.findViewById(R.id.btn2_popup_window).setOnClickListener(this);
        mMenu.findViewById(R.id.btn3_popup_window).setOnClickListener(this);
        mMenu.findViewById(R.id.btn4_popup_window).setOnClickListener(this);
        mMenu.findViewById(R.id.btnClose_popup_window).setOnClickListener(this);
        
    }
    public CustomActionProviderWithActionView(Context context) {
        super(context);
        // TODO Auto-generated constructor stub
        this.context = context;
    }

    /**
     * @return 需要返回null, 才能弹出子菜单.否则在actiobar上显示该view
     */
    @Override
    public View onCreateActionView() {
        // TODO Auto-generated method stub
        LayoutInflater lif = LayoutInflater.from(context);
        
        actionView = lif.inflate(R.layout.provider_with_av, null);
        
        ImageView button = (ImageView) actionView
                .findViewById(R.id.btn_action_view_for_costomProvider);
        
        button.setOnClickListener(this);
        
        initPopupMenu();
        
        return actionView;// 不return null不显示子菜单
    }

    
    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
        switch (v.getId()) {
        case R.id.btn_action_view_for_costomProvider: {
            mPopupWindow.showAsDropDown(v,-20,10);
        }
            return;
        case R.id.imgBtn_in_popup_window:
            Toast.makeText(context, "popup window image button clicked",
                    Toast.LENGTH_SHORT).show();
            break;
        case R.id.btn4_popup_window:
        case R.id.btn3_popup_window:
        case R.id.btn2_popup_window:
        case R.id.btn1_popup_window:
            Toast.makeText(context, "popup window item clicked",
                    Toast.LENGTH_SHORT).show();
            break;
        case R.id.btnClose_popup_window:
            break;
        }
        mPopupWindow.dismiss();

    }
    @Override
    public boolean onKey(View v, int keyCode, KeyEvent event) {
        // TODO Auto-generated method stub
        switch (keyCode) {
        case KeyEvent.KEYCODE_BACK:
        case KeyEvent.KEYCODE_MENU:
            if (mPopupWindow != null && mPopupWindow.isShowing()) {
                mPopupWindow.dismiss();
            }
            break;
        }
        return true;
    }
    @Override
    public boolean onTouch(View v, MotionEvent event) {
        // TODO Auto-generated method stub
        mPopupWindow.dismiss();
        return false;
    }
}

<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    tools:context="com.e.acationbar.MainActivity" >

    <item
        android:id="@+id/action_customProvider_no_actionView"
        android:actionProviderClass="com.e.acationbar.CustomActionProviderNoActionView"
        android:icon="@drawable/actionbar_setting_icon"
        android:showAsAction="always"
        android:title="@string/custom_provider_no_av">
    </item>
    <item
        android:id="@+id/action_customProvider_with_actionView"
        android:actionProviderClass="com.e.acationbar.CustomActionProviderWithActionView"
        android:icon="@drawable/ic_jog_dial_answer_and_hold"
        android:showAsAction="always"
        android:title="@string/custom_provider_av">
    </item>
...
</menu>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/LinearLayout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <ImageView
        android:id="@+id/btn_action_view_for_costomProvider"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/selector_img_view_bg" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/LinearLayout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_gravity="center"
    android:gravity="center"
    android:orientation="vertical" >

    <LinearLayout
        android:id="@+id/LinearLayout2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:gravity="center" >

        <ImageButton
            android:id="@+id/imgBtn_in_popup_window"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/ic_jog_dial_decline" />

        <Button
            android:id="@+id/btn4_popup_window"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/item" />
    </LinearLayout>

    <Button
        android:id="@+id/btn3_popup_window"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/item" />

    <Button
        android:id="@+id/btn2_popup_window"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/item" />

    <Button
        android:id="@+id/btn1_popup_window"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/item" />

    <Button
        android:id="@+id/btnClose_popup_window"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="close" />

</LinearLayout>