is Multi Tap MotionEvent - Android User Interface

Android examples for User Interface:MotionEvent

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Description

is Multi Tap MotionEvent

Demo Code


import android.util.MathUtils;
import android.view.MotionEvent;

public class Main{
    public static boolean isMultiTap(MotionEvent firstUp,
            MotionEvent secondUp, int multiTapTimeSlop,
            int multiTapDistanceSlop, int actionIndex) {
        return eventsWithinTimeAndDistanceSlop(firstUp, secondUp,
                multiTapTimeSlop, multiTapDistanceSlop, actionIndex);
    }//from   w  ww.ja va2s .c o  m
    private static boolean eventsWithinTimeAndDistanceSlop(
            MotionEvent first, MotionEvent second, int timeout,
            int distance, int actionIndex) {
        if (isTimedOut(first, second, timeout)) {
            return false;
        }
        final double deltaMove = computeDistance(first, second, actionIndex);
        if (deltaMove >= distance) {
            return false;
        }
        return true;
    }
    public static boolean isTimedOut(MotionEvent firstUp,
            MotionEvent secondUp, int timeout) {
        final long deltaTime = secondUp.getEventTime()
                - firstUp.getEventTime();
        return (deltaTime >= timeout);
    }
    public static double computeDistance(MotionEvent first,
            MotionEvent second, int pointerIndex) {
        return MathUtils.dist(first.getX(pointerIndex),
                first.getY(pointerIndex), second.getX(pointerIndex),
                second.getY(pointerIndex));
    }
}

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