CoolRefreshView

1. 支持任意View的刷新

2. 支持自定义Header

3. 支持NestedScrollingParent,NestedScrollingChild的事件分发

4. 嵌套ViewPager不会有事件冲突

7.导入方式

<1>gradle导入

compile 'com.shizhefei:CoolRefreshView:1.0.1'
由于用到了v4和recyclerview所以也要导入他们  
compile 'com.android.support:support-v4:23.4.0'  

<2>jar包方式导入

Download sample Apk

8.历史版本和更新信息

https://github.com/LuckyJayce/CoolRefreshView/releases

效果图

使用方法

xml

 <com.shizhefei.view.coolrefreshview.CoolRefreshView
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.v7.widget.RecyclerView
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

</com.shizhefei.view.coolrefreshview.CoolRefreshView>

代码

 coolRefreshView.setPullHeader(new MaterialHeader(getContext()));
 //添加刷新监听
 coolRefreshView.addOnPullListener(new SimpleOnPullListener() {
        @Override
        public void onRefreshing(CoolRefreshView refreshView) {

        }
    });

其它可用方法

设置全局的IPullHeaderFactory

  //静态设置全局的IPullHeaderFactory，一次配置，所有默认使用这个factory生成的PullHeader
  //就不用每个界面设置，该代码可以放在Application onCreate

  CoolRefreshView.setPullHeaderFactory(new IPullHeaderFactory() {
      @Override
      public PullHeader made(Context context) {
          JellyHeader jellyHeader = new JellyHeader(getContext());
          jellyHeader.setDragLayoutColor(ContextCompat.getColor(getContext(), R.color.primary));
          jellyHeader.setLoadingView(R.layout.layout_jelley_header);
          return jellyHeader;
      }

      @Override
      public boolean isPinContent() {
          return false;
      }
  });

设置ContentView是否和头部一起下拉

/**
 * @param pullHeader   刷新的头部
 * @param isPinContent true滚定内容不下拉，只下拉头部， false 一起下拉
 */
setPullHeader(PullHeader pullHeader, boolean isPinContent) 

自定义Header

<1>简单的实现

实现PullHeader

public class TestHeader implements PullHeader {
    private View headView;
    private TextView mTextView;

    @Override
    public View createHeaderView(final CoolRefreshView refreshView) {
        headView = LayoutInflater.from(refreshView.getContext()).inflate(R.layout.coolrecyclerview_testhead, refreshView, false);
        mTextView = (TextView) headView.findViewById(R.id.coolrecyclerview_testhead_text1_textView);
        return headView;
    }

    /**
     * 开始拖动
     */
    @Override
    public void onPullBegin(CoolRefreshView refreshView) {
        isDownArrow = true;
    }

    /**
     * 位置变化
     *
     * @param refreshView
     * @param status          状态 /没有任何操作
     *                        public final static byte PULL_STATUS_INIT = 1;
     *                        //开始下拉
     *                        public final static byte PULL_STATUS_TOUCH_MOVE = 2;
     *                        //回到原始位置
     *                        public final static byte PULL_STATUS_RESET = 3;
     *                        //刷新中
     *                        public final static byte PULL_STATUS_REFRESHING = 4;
     *                        //刷新完成
     *                        public final static byte PULL_STATUS_COMPLETE = 5;
     * @param dy              下拉事件的位移
     * @param currentDistance 当前位移的距离
     */
    @Override
    public void onPositionChange(CoolRefreshView refreshView, int status, int dy, int currentDistance) {
        int offsetToRefresh = getConfig().offsetToRefresh(refreshView, headView);
        if (status == CoolRefreshView.PULL_STATUS_TOUCH_MOVE) {
            if (currentDistance < offsetToRefresh) {
                if (!isDownArrow) {
                    mTextView.setText("下拉刷新");
                    isDownArrow = true;
                }
            } else {
                if (isDownArrow) {
                    mTextView.setText("释放立即刷新");
                    isDownArrow = false;
                }
            }
        }
    }

    private boolean isDownArrow;

    /**
     * 刷新中
     */
    @Override
    public void onRefreshing(CoolRefreshView refreshView) {
        mTextView.setText("刷新中..");
    }

    /**
     * 没有刷新的释放回去
     */
    @Override
    public void onReset(CoolRefreshView refreshView, boolean pullRelease) {

    }

    /**
     * 设置刷新完成，并且释放回去
     */
    @Override
    public void onPullRefreshComplete(CoolRefreshView frame) {

    }

    @Override
    public Config getConfig() {
        return config;
    }

    //使用默认的配置
    private DefaultConfig config = new DefaultConfig();

}

也可以直接继承View 实现 PullHeader

public class TestHeader extends View  implements PullHeader {
    @Override
    public View createHeaderView(final CoolRefreshView refreshView) {
        return this;
    }
}

<2>配置距离，可以实现更丰富的效果

 abstract class Config {
        /**
         * 超出这个偏移量，松开手指就会触发刷新。
         */
        public abstract int offsetToRefresh(CoolRefreshView refreshView, View headerView);

        /**
         * 显示刷新的位置的偏移量
         */
        public abstract int offsetToKeepHeaderWhileLoading(CoolRefreshView refreshView, View headerView);

        /**
         * 刷新控件总共可以下拉拖动的距离
         */
        public abstract int totalDistance(CoolRefreshView refreshView, View headerView);

        /**
         * headView 在布局中的偏移量
         */
        public abstract int headerViewLayoutOffset(CoolRefreshView refreshView, View headerView);

        /**
         * contentView 是否可以向上滚动，用来判断是否可以下拉刷新，如果可以向上滚动就不做下拉刷新动作
         */
        public abstract boolean contentCanScrollUp(CoolRefreshView refreshView, View contentView);

        /**
         * 拦截滑动事件
         *
         * @param refreshView
         * @param dy              触摸滑动的偏移量
         * @param currentDistance 当前的滑动的距离
         * @param totalDistance   总的可下拉距离
         * @return
         */
        public abstract int dispatchTouchMove(CoolRefreshView refreshView, int dy, int currentDistance, int totalDistance);

    }

默认的配置

//滑动的总距离是header高度3倍
//触发刷新的距离是header的1.2倍
//正在刷新中的距离是header的高度
class DefaultConfig extends Config {

    @Override
    public int offsetToRefresh(CoolRefreshView refreshView, View headerView) {
        return (int) (headerView.getMeasuredHeight() * 1.2f);
    }

    @Override
    public int offsetToKeepHeaderWhileLoading(CoolRefreshView refreshView, View headerView) {
        return headerView.getMeasuredHeight();
    }

    @Override
    public int totalDistance(CoolRefreshView refreshView, View headerView) {
        return headerView.getMeasuredHeight() * 3;
    }

    .....
}

第二种常用的配置

//总的滑动是header的高度，也就是滑动显示的区域控制在header里
//正在刷新的距离是header3分之一，在header底部的3分之一区域作为正在刷新中的区域
//触发刷新的距离是正在刷新距离的1.2倍.

private DefaultConfig config = new DefaultConfig() {
    @Override
    public int offsetToRefresh(CoolRefreshView refreshView, View headerView) {
        return (int) (headerView.getMeasuredHeight() / 3 * 1.2f);
    }

    @Override
    public int offsetToKeepHeaderWhileLoading(CoolRefreshView refreshView, View headerView) {
        return headerView.getMeasuredHeight() / 3;
    }

    @Override
    public int totalDistance(CoolRefreshView refreshView, View headerView) {
        return headerView.getMeasuredHeight();
    }
};

配合MVCHelper类库使用，上滑加载更多

配合 https://github.com/LuckyJayce/MVCHelper
代码只要5行，就可以实现下拉刷新，滚动底部自动加载更多，分页加载，自动切换显示网络失败布局，暂无数据布局

CoolRefreshView coolRefreshView = (CoolRefreshView) findViewById(R.id.coolRefreshView);
MVCHelper<List<Book>> mvcHelper = new MVCCoolHelper<List<Book>>(coolRefreshView);

// 设置数据源
mvcHelper.setDataSource(new BooksDataSource());
// 设置适配器
mvcHelper.setAdapter(new BooksAdapter(this));

// 加载数据
mvcHelper.refresh();