Merge "Do not crash NearestTouchFrame when views are not attached to window"

        }

        return mClickableChildren

                .stream()

                .filter(v -> v.isAttachedToWindow())

                .filter(View::isAttachedToWindow)

                .map(v -> new Pair<>(distance(v, event), v))

                .min(Comparator.comparingInt(f -> f.first))

                .get().second;

                .map(data -> data.second)

                .orElse(null);

    }

    private int distance(View v, MotionEvent event) {

import static org.mockito.ArgumentMatchers.any;

import static org.mockito.ArgumentMatchers.eq;

import static org.mockito.Mockito.doAnswer;

import static org.mockito.Mockito.mock;

import static org.mockito.Mockito.never;

import static org.mockito.Mockito.spy;

import static org.mockito.Mockito.verify;

        ev.recycle();

    }

    @Test

    public void testViewNotAttachedNoCrash() {

        View view = mockViewAt(0, 20, 10, 10);

        when(view.isAttachedToWindow()).thenReturn(false);

        mNearestTouchFrame.addView(view);

        mNearestTouchFrame.onMeasure(0, 0);

        MotionEvent ev = MotionEvent.obtain(0, 0, 0, 5 /* x */, 18 /* y */, 0);

        mNearestTouchFrame.onTouchEvent(ev);

        verify(view, never()).onTouchEvent(eq(ev));

        ev.recycle();

    }

    private View mockViewAt(int x, int y, int width, int height) {

        View v = spy(new View(mContext));

        doAnswer(invocation -> {