com.akingyin.librarys.widgets.XSwipeRefreshLayout.java Source code

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Here is the source code for com.akingyin.librarys.widgets.XSwipeRefreshLayout.java

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/*
 * Copyright (c) 2015 [1076559197@qq.com | tchen0707@gmail.com]
 *
 * Licensed under the Apache License, Version 2.0 (the "License?);
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.akingyin.librarys.widgets;

import android.content.Context;
import android.support.v4.widget.SwipeRefreshLayout;
import android.util.AttributeSet;
import android.view.MotionEvent;

/**
 * Author:  Tau.Chen
 * Email:   1076559197@qq.com | tauchen1990@gmail.com
 * Date:    2015/3/26.
 * Description:
 */
public class XSwipeRefreshLayout extends SwipeRefreshLayout {

    public XSwipeRefreshLayout(Context context) {
        super(context);
    }

    public XSwipeRefreshLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    private float xDistance, yDistance, xLast, yLast;

    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {

        switch (ev.getAction()) {
        case MotionEvent.ACTION_DOWN:
            xDistance = yDistance = 0f;
            xLast = ev.getX();
            yLast = ev.getY();
            break;
        case MotionEvent.ACTION_MOVE:
            final float curX = ev.getX();
            final float curY = ev.getY();

            xDistance += Math.abs(curX - xLast);
            yDistance += Math.abs(curY - yLast);
            xLast = curX;
            yLast = curY;

            if (xDistance > yDistance) {
                return false;
            }
        }

        return super.onInterceptTouchEvent(ev);
    }

    private OnScrollViewScrollListener mOnScrollViewScrollListener = null;

    @Override
    protected void onScrollChanged(int x, int y, int oldx, int oldy) {
        super.onScrollChanged(x, y, oldx, oldy);
        if (mOnScrollViewScrollListener != null) {
            mOnScrollViewScrollListener.onScrollChanged(x, y, oldx, oldy);
        }
    }

    public void setOnScrollListener(OnScrollViewScrollListener listener) {
        this.mOnScrollViewScrollListener = listener;
    }

    public interface OnScrollViewScrollListener {
        public void onScrollChanged(int x, int y, int oldX, int oldY);
    }
}