PullToRefreshListView 变成RecyclerView

继承PullToRefreshBase 复写滑动判断

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.util.AttributeSet;

import com.handmark.pulltorefresh.library.PullToRefreshBase;

/**
 * @author xuanyouwu
 * @email [email protected]
 * @time 2016-04-19 11:02
 * <p/>
 * 下拉刷新 上拉加载 自动刷新PullRecyclerView
 */
public class PullRecyclerView extends PullToRefreshBase<RecyclerView> {

    public PullRecyclerView(Context context, Mode mode, AnimationStyle animStyle) {
        super(context, mode, animStyle);
    }

    public PullRecyclerView(Context context, Mode mode) {
        super(context, mode);
    }

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

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

    @Override
    public Orientation getPullToRefreshScrollDirection() {
        return Orientation.VERTICAL;
    }


    @Override
    protected RecyclerView createRefreshableView(Context context, AttributeSet attrs) {
        RecyclerView recyclerView = new RecyclerView(context, attrs);
        return recyclerView;
    }

    @Override
    protected boolean isReadyForPullEnd() {
        return DesignViewUtils.isSlideToBottom(getRefreshableView());
    }

    @Override
    protected boolean isReadyForPullStart() {
        return DesignViewUtils.isSlideToTop(getRefreshableView());
    }


}

<pre name="code" class="java">
import android.support.design.widget.AppBarLayout;
import android.support.v7.widget.RecyclerView;

/**
 * @author xuanyouwu
 * @email [email protected]
 * @time 2016-04-13 16:25
 */
public class DesignViewUtils {

    /**
     * AppBarLayout 完全显示 打开状态
     *
     * @param verticalOffset
     * @return
     */
    public static boolean isAppBarLayoutOpen(int verticalOffset) {
        return verticalOffset >= 0;
    }

    /**
     * AppBarLayout 关闭或折叠状态
     *
     * @param appBarLayout
     * @param verticalOffset
     * @return
     */
    public static boolean isAppBarLayoutClose(AppBarLayout appBarLayout, int verticalOffset) {
        if (appBarLayout == null) return false;
        return appBarLayout.getTotalScrollRange() == Math.abs(verticalOffset);
    }

    /**
     * RecyclerView 滚动到底部 最后一条完全显示
     *
     * @param recyclerView
     * @return
     */
    public static boolean isSlideToBottom(RecyclerView recyclerView) {
        if (recyclerView == null) return false;
        if (recyclerView.computeVerticalScrollExtent() + recyclerView.computeVerticalScrollOffset() >= recyclerView.computeVerticalScrollRange())
            return true;
        return false;
    }

    /**
     * RecyclerView 滚动到顶端
     *
     * @param recyclerView
     * @return
     */
    public static boolean isSlideToTop(RecyclerView recyclerView) {
        if (recyclerView == null) return false;
        return recyclerView.computeVerticalScrollOffset() <= 0;
    }
}