PopupWindow-弹窗的界面

1 效果图

2 知识点

  PopupWindow(View contentView, int width, int height) //创建一个没有获取焦点、长为width、宽为height，内容为cntentView的popup window. 

  PopupWindow(View contentView, int width, int height, boolean focusable) //类似上面那个，但第四个参数可以控制是否获取焦点 //(这2种使用较多)！！！！

3 弹出框的界面 

 layout_about_popup.xml

<?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>

4 button_share_1_pressed.xml

<?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>

5 .java

    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;

    /***
     * 获取PopupWindow实例
     */
    private void getPopupWindow() {

        if (null != pop) {
            closePopupWindow();
            return;
        } else {
            initPopuptWindow();
        }
    }

    /**
     * 创建PopupWindow
     */
    protected void initPopuptWindow() {

        // PopupWindow实例化
        pop = new PopupWindow(view, LayoutParams.MATCH_PARENT,
                LayoutParams.WRAP_CONTENT, true);
        pop.setAnimationStyle(R.style.MenuAnimationFade);
        // 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);
        WindowManager.LayoutParams params = this.getWindow().getAttributes();
        params.alpha = 0.5f;
        this.getWindow().setAttributes(params);

        view.setOnTouchListener(new View.OnTouchListener() {

            @Override
            public boolean onTouch(View v, MotionEvent event) {
                closePopupWindow();
                return false;
            }
        });
    }

@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:

            getPopupWindow();
            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:
            closePopupWindow();
            break;
        default:
            break;
        }

    }

    /**
     * 关闭窗口
     */
    private void closePopupWindow() {
        if (pop != null && pop.isShowing()) {
            pop.dismiss();
            pop = null;
            WindowManager.LayoutParams params = this.getWindow()
                    .getAttributes();
            params.alpha = 1f;
            this.getWindow().setAttributes(params);
        }
    }