WindowManager.addView软键或导航栏的ontop(覆盖) [英] WindowManager.addView ontop(overlay) of soft key OR nav bar

问题描述

今天，我看到一个应用程序覆盖了整个屏幕，包括导航栏(或具有返回，首页等功能的软键).是chainfire的CF.Lumen(需要android 4.4 +).

I saw an app that overlays whole screen including nav bar (or soft-key that has back, home, etc.) today. it's CF.Lumen(requires android 4.4+) by chainfire.

我只是想起这在一般方法上是不可能的，所以有很多答案告诉我.因此，我从Lumens apk(对不起的链火)中查找了smali代码，发现0x7d6作为类型说明符，即TYPE_SYSTEM_OVERLAY. 通常，这会使视图覆盖在锁定屏幕的顶部.看起来不错，但是不会覆盖导航栏区域.即使在锁定屏幕上 我确实将MATCH_PARENT替换为9999，但是它仍然不会覆盖导航栏区域.

I just remembered this is NOT POSSIBLE on general approach and many SO answers told me. So I looked down smali codes from Lumens apk(sorry chainfire), found 0x7d6 as type specifier, which is TYPE_SYSTEM_OVERLAY. In general, this makes a view overlays on top of lock screen. It looks good however it won't overlays nav bar area. even on lock screen. I did replacing MATCH_PARENT to 9999 but it still won't overlays nav bar area.

我看了看Android的源代码，发现有趣的是它有更多未记录的类型.

I looked down the source code of Android, found interesting that has more types undocumented.

FIRST_SYSTEM_WINDOW = 2000;

FIRST_SYSTEM_WINDOW = 2000;

TYPE_NAVIGATION_BAR = FIRST_SYSTEM_WINDOW + 19;

TYPE_NAVIGATION_BAR = FIRST_SYSTEM_WINDOW+19;

TYPE_BOOT_PROGRESS = FIRST_SYSTEM_WINDOW + 21;

TYPE_BOOT_PROGRESS = FIRST_SYSTEM_WINDOW+21;

我将这些应用到了我的应用中，但是当崩溃时，提示权限被拒绝.它需要INTERNAL_SYSTEM_WINDOW或比SYSTEM_ALERT_WINDOW更多未记录的内容.这些权限仅授予系统应用程序.

I applied these to my app but got crashe says permission denied. It requires INTERNAL_SYSTEM_WINDOW OR something more undocumented than SYSTEM_ALERT_WINDOW. those permissions are granted for system apps only.

这是我的代码，用于添加除导航栏区域之外的整个屏幕的视图.

here's my code to add a view fills whole screen except nav bar area.

我应该怎么做才能完成它(使覆盖包括导航栏区域)

What should I do to acomplish it?(make overlay including nav bar area)

final WindowManager.LayoutParams paramsRL = new WindowManager.LayoutParams(
            WindowManager.LayoutParams.MATCH_PARENT,
            WindowManager.LayoutParams.MATCH_PARENT,
            WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY,
            WindowManager.LayoutParams.FLAG_FULLSCREEN
                    | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN
                    | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
                    | WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL
                    | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE
                    | WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED,
            PixelFormat.TRANSLUCENT);
windowManager.addView(view_floating, paramsRL);

推荐答案

下面是一个可行的小示例:

Here's a small example which works:

    FrameLayout frameLayout = new FrameLayout(context);
    frameLayout.setBackgroundColor(Color.BLACK);
    frameLayout.setAlpha(0.5f);

    windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
    WindowManager.LayoutParams params = new WindowManager.LayoutParams(
            WindowManager.LayoutParams.MATCH_PARENT,
            WindowManager.LayoutParams.MATCH_PARENT,
            WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY,
            WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN
                    | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
                    | WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED
                    | WindowManager.LayoutParams.FLAG_FULLSCREEN
                    | WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS,
            PixelFormat.TRANSLUCENT);

    //make sure height includes the nav bar size (get the dimension of whole screen)
    params.height = screenHeight;
    params.width = screenWidth;
    windowManager.addView(frameLayout, params);

    //add your view to this frameLayout
    frameLayout.addView(....);

这里的三个关键要素是:

Three key things here are:

1. TYPE_SYSTEM_OVERLAY(或任何类似类型)可以在整个屏幕上显示内容.

1. TYPE_SYSTEM_OVERLAY (or any similar types) which can show content over the whole screen.

FLAG_LAYOUT_NO_LIMITS，使我们可以超过允许的正常大小.

FLAG_LAYOUT_NO_LIMITS which allows us to go over the normal size allowed.

设置软键后面需要覆盖的额外高度.主要问题是，当我们将参数设置为match_parent时，它将设置为屏幕的高度减去我猜想的导航栏.设置额外的高度可以解决问题.

Setting the extra height required to be covered behind soft keys. The main problem was when we set the parameters to match_parent, it sets to the height of screen minus the nav bar I suppose. Setting the extra height solves the issue.

这篇关于WindowManager.addView软键或导航栏的ontop(覆盖)的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！