getPressure always returning 1.0

问题:

Does anyone have any idea why getPressure() returns always 1.0?

Here is my code:

@Override
    public boolean onTouchEvent(MotionEvent event) {
        super.onTouchEvent(event);

        System.out.println(event.getPressure());

        return true;

    }

回答1:

Does anyone have any idea why getPressure() returns always 1.0?

The typical touchscreen / input device has no way to measure pressure. You either don't press and get no touch event or you press and get a touch event with value 1.

回答2:

https://groups.google.com/forum/#!topic/android-developers/10pF8EUEuy0 Here's an answer about how getPressure and getSize() work in Android, I think this would help