Android仿网易新闻图片详情可下滑隐藏

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    public class InfoTextView extends AutoRelativeLayout {

        private Context context;

        private int lastY;

        private int offY;

        private int MIN_HEIGHT = 600;

        public InfoTextView(Context context) {

            super(context);

            this.context = context;

            init();

        }

        public InfoTextView(Context context, AttributeSet attrs) {

            super(context, attrs);

            this.context = context;

            init();

        }

        public InfoTextView(Context context, AttributeSet attrs, int defStyle) {

            super(context, attrs, defStyle);

            this.context = context;

            init();

        }

        private void init() {

            View root = inflate(context, R.layout.ad_detail_text_layout, this);

        }

        @Override

        public boolean onInterceptTouchEvent(MotionEvent ev) {

            return true;

        }

        @Override

        public boolean onTouchEvent(MotionEvent event) {

            return true;

        }

        @Override

        public boolean dispatchTouchEvent(MotionEvent ev) {

            boolean isConsume = false;

            int y = (int) ev.getY();

            switch (ev.getAction()) {

                case MotionEvent.ACTION_DOWN:

                    isConsume = true;

                    lastY = y;

                    break;

                case MotionEvent.ACTION_MOVE:

                    offY = y - lastY;

                    int[] screenSize = ScreenUtils.getScreenSize(context, false);

                    if (getTop() >= (screenSize[1] - MIN_HEIGHT)) {

                        break;

                    }

    //                Log.d("yzk", "y " + y + " getTop " + getTop()

    //                        + " getBottom " + getBottom()

    //                        + " screenSize[1] - getMeasuredHeight " + (screenSize[1] - getMeasuredHeight())

    //                        + " screenSize[1] - MIN_HEIGHT " + (screenSize[1] - MIN_HEIGHT));

                    if ((offY > 0 && getTop() < screenSize[1] - MIN_HEIGHT)

                            || offY < 0 && getTop() > screenSize[1] - getMeasuredHeight()) {

                        layout(getLeft(), getTop() + offY,

                                getRight(), getBottom() + offY);

                    }

                    break;

                case MotionEvent.ACTION_UP:

                    break;

            }

            return isConsume || super.dispatchTouchEvent(ev);

        }

    }