Android 为TouchDelegate放大矩形时的奇怪行为

我倾向于增加命中矩形的顶部区域

我引用了和中的代码

touch\u delegate\u linear\u布局是我的父视图

currency\u exchange\u linear\u布局
是我的目标

下面是我的布局


上述布局的XML代码如下所示

<LinearLayout
    android:id="@+id/touch_delegate_linear_layout"
    ...>

    <LinearLayout
        android:id="@+id/footer_linear_layout"
        ...
        android:orientation="horizontal" >

        <TextView
            android:id="@+id/footer_label_text_view"
            ... />

        <View
            android:layout_width="1px"
            ... />

        <TextView
            android:id="@+id/footer_value_text_view"
            ... />
    </LinearLayout>

    <LinearLayout
        ...
        android:orientation="horizontal" >

        <TextSwitcher
            android:id="@+id/status_bar"
            ... />

        <LinearLayout
            android:id="@+id/currency_exchange_linear_layout"
            ...>

        </LinearLayout>
    </LinearLayout>

</LinearLayout>



如果我在
currency\u exchange\u linear\u布局的区域内触摸，它工作得非常好

final View parentView = v.findViewById(R.id.touch_delegate_linear_layout);
final View directChildView = v.findViewById(R.id.footer_value_text_view);

ViewTreeObserver vto = parentView.getViewTreeObserver();
vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {

    @SuppressLint("NewApi")
    @SuppressWarnings("deprecation")
    @Override
    public void onGlobalLayout() {
        final Rect r = new Rect();
        final Rect directChild = new Rect();

        currencyExchangeLinearLayout.getHitRect(r);
        directChildView.getHitRect(directChild);

        int bestHeight = Utils.dpToPixel(48);

        directChild.top = directChild.bottom - Math.max((bestHeight - r.height()), 0);

        parentView.setTouchDelegate(new TouchDelegate(directChild, currencyExchangeLinearLayout));

        ViewTreeObserver obs = parentView.getViewTreeObserver();
        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN) {
            obs.removeOnGlobalLayoutListener(this);
        } else {
            obs.removeGlobalOnLayoutListener(this);
        }
    }
});


我希望触摸也能工作，即使我触摸略高于<代码>货币兑换>线性布局

。这是因为我有code

r.top-=10

扩展我的触摸区域但是，它没有按预期工作。

奇怪的是，如果我在远离

货币交换线性布局的地方触摸，触摸事件将被错误触发。这不是我所期望的


你知道为什么会发生这种奇怪的行为吗？我的
TouchDelegate
代码有什么问题吗

演示代码
下面是示例代码，用于演示所提到的问题：
这种行为的原因是因为
货币兑换\u线性\u布局
不是
触摸\u代表\u线性布局的直接子对象

final View parentView = v.findViewById(R.id.touch_delegate_linear_layout);
final View directChildView = v.findViewById(R.id.footer_value_text_view);

ViewTreeObserver vto = parentView.getViewTreeObserver();
vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {

    @SuppressLint("NewApi")
    @SuppressWarnings("deprecation")
    @Override
    public void onGlobalLayout() {
        final Rect r = new Rect();
        final Rect directChild = new Rect();

        currencyExchangeLinearLayout.getHitRect(r);
        directChildView.getHitRect(directChild);

        int bestHeight = Utils.dpToPixel(48);

        directChild.top = directChild.bottom - Math.max((bestHeight - r.height()), 0);

        parentView.setTouchDelegate(new TouchDelegate(directChild, currencyExchangeLinearLayout));

        ViewTreeObserver obs = parentView.getViewTreeObserver();
        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN) {
            obs.removeOnGlobalLayoutListener(this);
        } else {
            obs.removeGlobalOnLayoutListener(this);
        }
    }
});

因此,当我们表演的时候,

currencyExchangeLinearLayout.getHitRect(r);

获得的矩形坐标与
touch\u delegate\u linear\u布局无关

final View parentView = v.findViewById(R.id.touch_delegate_linear_layout);
final View directChildView = v.findViewById(R.id.footer_value_text_view);

ViewTreeObserver vto = parentView.getViewTreeObserver();
vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {

    @SuppressLint("NewApi")
    @SuppressWarnings("deprecation")
    @Override
    public void onGlobalLayout() {
        final Rect r = new Rect();
        final Rect directChild = new Rect();

        currencyExchangeLinearLayout.getHitRect(r);
        directChildView.getHitRect(directChild);

        int bestHeight = Utils.dpToPixel(48);

        directChild.top = directChild.bottom - Math.max((bestHeight - r.height()), 0);

        parentView.setTouchDelegate(new TouchDelegate(directChild, currencyExchangeLinearLayout));

        ViewTreeObserver obs = parentView.getViewTreeObserver();
        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN) {
            obs.removeOnGlobalLayoutListener(this);
        } else {
            obs.removeGlobalOnLayoutListener(this);
        }
    }
});

在这种情况下，我们可以使用
footer\u value\u text\u view
的hit矩形，其矩形的Y坐标相对于
touch\u delegate\u linear\u布局

final View parentView = v.findViewById(R.id.touch_delegate_linear_layout);
final View directChildView = v.findViewById(R.id.footer_value_text_view);

ViewTreeObserver vto = parentView.getViewTreeObserver();
vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {

    @SuppressLint("NewApi")
    @SuppressWarnings("deprecation")
    @Override
    public void onGlobalLayout() {
        final Rect r = new Rect();
        final Rect directChild = new Rect();

        currencyExchangeLinearLayout.getHitRect(r);
        directChildView.getHitRect(directChild);

        int bestHeight = Utils.dpToPixel(48);

        directChild.top = directChild.bottom - Math.max((bestHeight - r.height()), 0);

        parentView.setTouchDelegate(new TouchDelegate(directChild, currencyExchangeLinearLayout));

        ViewTreeObserver obs = parentView.getViewTreeObserver();
        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN) {
            obs.removeOnGlobalLayoutListener(this);
        } else {
            obs.removeGlobalOnLayoutListener(this);
        }
    }
});