Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import android.view.MotionEvent;
import android.view.VelocityTracker;

public class Main {
    private static int mMaximumFlingVelocity = 8000;

    public static void velocityTrackerPointerUpCleanUpIfNecessary(MotionEvent ev, VelocityTracker tracker) {

        // Check the dot product of current velocities.
        // If the pointer that left was opposing another velocity vector, clear.
        tracker.computeCurrentVelocity(1000, mMaximumFlingVelocity);
        final int upIndex = ev.getActionIndex();
        final int id1 = ev.getPointerId(upIndex);
        final float x1 = tracker.getXVelocity(id1);
        final float y1 = tracker.getYVelocity(id1);
        for (int i = 0, count = ev.getPointerCount(); i < count; i++) {
            if (i == upIndex)
                continue;

            final int id2 = ev.getPointerId(i);
            final float x = x1 * tracker.getXVelocity(id2);
            final float y = y1 * tracker.getYVelocity(id2);

            final float dot = x + y;
            if (dot < 0) {
                tracker.clear();
                break;
            }
        }
    }
}