Android Question Dual monitors

MicroDrie said:

What exactly do you mean by dual monitor (are two physical monitors as possible in Windows) or do you mean the split screen display in Android where the screen is divided into two halves?

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MicroDrie said:

What exactly do you mean by dual monitor

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agraham said:

คุณยังไม่ได้ตอบคำถาม ดังนั้นเราจึงไม่ทราบว่าคุณถามเกี่ยวกับอะไร

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agraham said:

So one monitor is facing the customer and the other the shopkeeper?

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mcqueccu said:

I have seen such POS systems in some grocery shops running on windows and not android. And it will be good to know how its done?

View attachment 144979

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#Obtain a real secondary screen:​

public Display getPresentationDisplays() {
    DisplayManager mDisplayManager = (DisplayManager) getSystemService(Context.DISPLAY_SERVICE);
    displays = mDisplayManager.getDisplays();
    for (int i = 0; i < displays.length; i++) {
        Log.e(TAG, “屏幕” + displays[i]);
        if ((displays[i].getFlags() & Display.FLAG_SECURE) != 0
            && (displays[i].getFlags() & Display.FLAG_SUPPORTS_PROTECTED_BUFFERS) != 0
            && (displays[i].getFlags() & Display.FLAG_PRESENTATION) != 0) {
            Log.e(TAG, “第一个真实存在的副屏屏幕” + displays[i]);
            return displays[i];
        }
    }
    return null;
}

DisplayManager displayManager =(DisplayManager) context.getSystemService(Context.DISPLAY_SERVICE);
Display[] presentationDisplays = displayManager.getDisplays(DisplayManager.DISPLAY_CATEGORY_PRESENTATION);
if(presentationDisplays.length >0){
    // If there is more than one suitable presentation display, then we could consider
    // giving the user a choice. For this example, we simply choose the first display
    // which is the one the system recommends as the preferred presentation display.
    Display display = presentationDisplays[0];
    Presentation presentation =new MyPresentation(context, presentationDisplay);
    presentation.show();
            }

aeric said:

You need to be more specific. Target one model first. What is the actual model from brand/manufacturer?
Different manufacturers may have different method supported. The documentation for Imin may not work for Sunmi. Maybe they use different Android SDK.
Also, please be more specific which platform you are asking. Is it for Windows or Android?
Asking generic question doesn't guide you anywhere.

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Theera said:

I need only to study B4A. I'm poor to buy it,so I can't point to specific.

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