安卓开发37：自定义的HorizontalScrollView种，使其pageScroll的时候焦点不选中

自定义一个HorizontalScrollView类，主要为了让这个HorizontalScrollView不能鼠标点击，不能左右按键，并且没有焦点。

public class ImageMoveHorizontalScrollView extends HorizontalScrollView {    private boolean    mSmoothScrollingEnabled = true;    private final Rect mTempRect               = new Rect();    public ImageMoveHorizontalScrollView(Context context, AttributeSet attrs) {        super(context, attrs);    }    public ImageMoveHorizontalScrollView(Context context) {        super(context);    }    /**     * 关闭鼠标点击的效果，重写该方法     */    @Override    public boolean onTouchEvent(MotionEvent ev) {        return false;    }    /**     * 关闭左右按键效果，重写该方法     */    @Override    public boolean executeKeyEvent(KeyEvent event) {        return false;    }    /**     * 去除焦点选中     */    @Override    public boolean pageScroll(int direction) {        boolean right = direction == View.FOCUS_RIGHT;        int width = getWidth();        if (right) {            mTempRect.left = getScrollX() + width;            int count = getChildCount();            if (count > 0) {                View view = getChildAt(0);                if (mTempRect.left + width > view.getRight()) {                    mTempRect.left = view.getRight() - width;                }            }        } else {            mTempRect.left = getScrollX() - width;            if (mTempRect.left < 0) {                mTempRect.left = 0;            }        }        mTempRect.right = mTempRect.left + width;        return scrollAndFocus(direction, mTempRect.left, mTempRect.right);    }    private boolean scrollAndFocus(int direction, int left, int right) {        boolean handled = true;        int width = getWidth();        int containerLeft = getScrollX();        int containerRight = containerLeft + width;        boolean goLeft = direction == View.FOCUS_LEFT;//主要在这边，注释掉下面的代码        //        View newFocused = findFocusableViewInBounds(goLeft, left, right);        //        if (newFocused == null) {        //            newFocused = this;        //        }        if (left >= containerLeft && right <= containerRight) {            handled = false;        } else {            int delta = goLeft ? (left - containerLeft) : (right - containerRight);            doScrollX(delta);        }        //去除 滚动后 foucus的        //        if (newFocused != findFocus())        //            newFocused.requestFocus(direction);        return handled;    }    /**     * Smooth scroll by a X delta     * @param delta the number of pixels to scroll by on the X axis     */    private void doScrollX(int delta) {        if (delta != 0) {            if (mSmoothScrollingEnabled) {                smoothScrollBy(delta, 0);            } else {                scrollBy(delta, 0);            }        }    }}

使用：

 sc.pageScroll(View.FOCUS_RIGHT);  //向右翻一页