尝试确定屏幕是否关闭时检测始终显示 [英] Detect Always-On Display when trying to determine if the screen is off

问题描述

我试图弄清楚如何检测Android上的显示器是否关闭，并且我感觉S10上的Always-On显示器正在影响我的结果.

I'm trying to figure out how to detect if the Display is Off on Android and I have a feeling that the Always-On Display on my S10 is affecting my results.

当前，我正在使用此stackoverflow答案中的逻辑.

Currently, I'm using the logic found in this stackoverflow answer.

还有评论在该线程上，表示您应该能够使用 c0> 检查三星的"Always-On Display"(始终显示)，但没有说明如何操作.

There is also a comment on that thread that says you should be able to use Display.FLAG_PRIVATE to check for Samsung's Always-On Display, but it doesn't explain how.

使用该信息，我将其组合在一起.但这似乎不起作用.如果我启用了Always-On显示屏，则该显示屏似乎总是被视为常亮.

Using that information, I've put together this function. But it doesn't seem to work. The display seems to be counted as on almost always if i have the Always-On display enabled.

public boolean isScreenOn() {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT_WATCH) {
        DisplayManager dm = (DisplayManager) getSystemService(Context.DISPLAY_SERVICE);
        for (Display display : dm.getDisplays()) {
            if ((display.getFlags() & Display.FLAG_PRIVATE) != Display.FLAG_PRIVATE) {
                if (display.getState() != Display.STATE_OFF) {
                    return true;
                }
            }
        }
        return false;
    } else {
        PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
        //noinspection deprecation
        return pm.isScreenOn();
    }
}

我不确定我检查Display.FLAG_PRIVATE标志的方式是否正确，或者是否甚至可以帮助Always-On屏幕显示影响结果的可能性.

I'm not sure if the way i'm checking the Display.FLAG_PRIVATE flag is correct, or if that will even help with the potential of the Always-On display affecting the result.

推荐答案

我发现这些标志实际上与它没有任何关系.似乎显示状态将是以下几种状态之一，包括 Display.STATE_DOZE_SUSPENDED ， Display.STATE_DOZE 等常亮显示屏处于活动状态.因此，我只是检查 Display.STATE_ON 并将所有其他状态都视为显示器处于关闭状态.

I found that the flags don't actually have anything to do with it. It seems that the display state will be one of several states including Display.STATE_DOZE_SUSPENDED, Display.STATE_DOZE and several others when the Always-On Display is active. So instead, I'm just checking for Display.STATE_ON and treating all other states as the display being turned off.

public boolean isScreenOn() {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT_WATCH) {
        DisplayManager dm = (DisplayManager) getSystemService(Context.DISPLAY_SERVICE);
        for (Display display : dm.getDisplays()) {
            if (display.getState() == Display.STATE_ON) {
                return true;
            }
        }
        return false;
    } else {
        PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
        //noinspection deprecation
        return pm.isScreenOn();
    }
}

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