PopupWindow-弹窗的界面

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/bg_about_popup"
    android:orientation="vertical" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="5dp"
        android:orientation="horizontal" >

        <LinearLayout
            android:id="@+id/ll_share_1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="vertical" >

            <ImageView
                android:layout_width="50dp"
                android:layout_height="50dp"
                android:layout_gravity="center_horizontal"
                android:background="@drawable/button_share_1_pressed" />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:layout_margin="5dp"
                android:text="微信好友"
                android:textSize="13sp" />
        </LinearLayout>

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1" />

        <LinearLayout
            android:id="@+id/ll_share_2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="vertical" >

            <ImageView
                android:layout_width="50dp"
                android:layout_height="50dp"
                android:layout_gravity="center_horizontal"
                android:background="@drawable/button_share_4_pressed" />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:layout_margin="5dp"
                android:text="微信朋友圈"
                android:textSize="13sp" />
        </LinearLayout>

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1" />

        <LinearLayout
            android:id="@+id/ll_share_3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="vertical" >

            <ImageView
                android:layout_width="50dp"
                android:layout_height="50dp"
                android:layout_gravity="center_horizontal"
                android:background="@drawable/button_share_2_pressed" />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:layout_margin="5dp"
                android:text="QQ登录"
                android:textSize="13sp" />
        </LinearLayout>

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1" />

        <LinearLayout
            android:id="@+id/ll_share_4"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="vertical" >

            <ImageView
                android:layout_width="50dp"
                android:layout_height="50dp"
                android:layout_gravity="center_horizontal"
                android:background="@drawable/button_share_3_pressed" />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:layout_margin="5dp"
                android:text="微博登录"
                android:textSize="13sp" />
        </LinearLayout>
    </LinearLayout>

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="0.5dp"
        android:layout_marginBottom="5dp"
        android:background="@android:color/black" />

    <Button
        android:id="@+id/btn_share_call_off"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:background="@color/transparent"
        android:text="取消" />

</LinearLayout>

<?xml version="1.0" encoding="UTF-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

<item android:drawable="@drawable/login_share_2_0" android:state_pressed="false"></item>
<item android:drawable="@drawable/login_share_2_1" android:state_pressed="true"></item>

</selector>

    private LinearLayout layout_weixin;
    private LinearLayout layout_weixin_friends;
    private LinearLayout layout_qq;
    private LinearLayout layout_sina;
    private Button btn_out_off;
    private View view;
    private PopupWindow pop;

// 引入窗口配置文件 - 即弹窗的界面
        view = inflater.inflate(R.layout.layout_about_popup, null);
        layout_weixin = (LinearLayout) view.findViewById(R.id.ll_share_1);
        layout_weixin_friends = (LinearLayout) view
                .findViewById(R.id.ll_share_2);
        layout_qq = (LinearLayout) view.findViewById(R.id.ll_share_3);
        layout_sina = (LinearLayout) view.findViewById(R.id.ll_share_4);
        btn_out_off = (Button) view.findViewById(R.id.btn_share_call_off);

// PopupWindow实例化
        pop = new PopupWindow(view, LayoutParams.MATCH_PARENT,
                LayoutParams.WRAP_CONTENT, true);
       pop.setAnimationStyle(R.style.MenuAnimationFade);

@Override
    public void onClick(View v) {
        switch (v.getId()) {
        case R.id.ic_about_back:
            finish();
            break;
        case R.id.ic_about_help:
            Uri uri = Uri.parse("http://www.etoury.com/help/app.html");
            Intent it = new Intent(Intent.ACTION_VIEW, uri);
            startActivity(it);
            break;
        case R.id.btn_about_share:
            /* share(); */
            changePopupWindowState();
            break;
        case R.id.ll_share_1:
            finish();
            break;
        case R.id.ll_share_2:
            finish();
            break;
        case R.id.ll_share_3:
            finish();
            break;
        case R.id.ll_share_4:
            finish();
            break;
        case R.id.btn_share_call_off:
            changePopupWindowState();
            break;
        default:
            break;
        }

    }

/**
     * 改变 PopupWindow 的显示和隐藏
     */
    private void changePopupWindowState() {
        if (pop.isShowing()) {
            // 隐藏窗口，如果设置了点击窗口外消失，则不需要此方式隐藏
            pop.dismiss();
        } else {
            // 弹出窗口显示内容视图,默认以锚定视图的左下角为起点，这里为点击按钮
            pop.showAtLocation(tv_about_version, Gravity.BOTTOM, 0, 0);
        }
    }