xey.elib.utils

类 FractionalTouchDelegate

java.lang.Object

android.view.TouchDelegate

xey.elib.utils.FractionalTouchDelegate

public class FractionalTouchDelegate
extends android.view.TouchDelegate

TouchDelegate that gates MotionEvent instances by comparing then against fractional dimensions of the source view.

This is particularly useful when you want to define a rectangle in terms of the source dimensions, but when those dimensions might change due to pending or future layout passes.

One example is catching touches that occur in the top-right quadrant of sourceParent, and relaying them to targetChild. This could be done with: FractionalTouchDelegate.setupDelegate(sourceParent, targetChild, new RectF(0.5f, 0f, 1f, 0.5f));

字段概要

从类继承的字段 android.view.TouchDelegate

ABOVE, BELOW, TO_LEFT, TO_RIGHT

构造器概要

构造器

构造器和说明
FractionalTouchDelegate(android.view.View source, android.view.View target, android.graphics.RectF sourceFraction)

方法概要

方法

限定符和类型	方法和说明
boolean	onTouchEvent(android.view.MotionEvent event)
static void	setupDelegate(android.view.View source, android.view.View target, android.graphics.RectF sourceFraction) given View.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

FractionalTouchDelegate

public FractionalTouchDelegate(android.view.View source,
                       android.view.View target,
                       android.graphics.RectF sourceFraction)

方法详细资料

setupDelegate

public static void setupDelegate(android.view.View source,
                 android.view.View target,
                 android.graphics.RectF sourceFraction)

given View.

参数:

source - Larger source View, usually a parent, that will be assigned View.setTouchDelegate(TouchDelegate).

target - Smaller target View which will receive MotionEvent that land in requested fractional area.

sourceFraction - Fractional area projected onto source View which determines when MotionEvent will be passed to target View.

onTouchEvent

public boolean onTouchEvent(android.view.MotionEvent event)

覆盖:

onTouchEvent 在类中 android.view.TouchDelegate