SwipeRefreshLayout

SwipeRefreshLayout是由google官方提出的下拉刷新空间, 在android.support.v4兼容库中.

使用

布局文件

SwipeRefreshLayout基本上可以包裹任何可以滚动的内容(ListView, RecyclerView…,WebView)

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<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.SwipeRefreshLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/swipe_refresh"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/news_rv"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

    </android.support.v7.widget.RecyclerView>
</android.support.v4.widget.SwipeRefreshLayout>

刷新操作

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mSwipeRefreshLayout=(SwipeRefreshLayout)findViewById(R.id.swipe_refresh);
mSwipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
            @Override
            public void onRefresh() {
                pageNum+=1;
                updateDatas(service,apiKey,pageNum);
            }
        });

....
public void updateDatas(Api.NewsService service,String apiKey,int pageNum){
        service.getList(apiKey,pageNum)
                .subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(new Subscriber<News>() {
                    @Override
                    public void onCompleted() {
                      ...
                    }

                    @Override
                    public void onError(Throwable e) {
                      ...
                    }

                    @Override
                    public void onNext(News news) {
                        datas=news.getDatas();
                        notifyDatasetChanged(datas);
                        mSwipeRefreshLayout.setRefreshing(false);
                    }
                });
    }

在获取完数据之后, 需要调用mSwipeRefreshLayout.setRefreshing(false);, 否则加载的小圆圈将一直在旋转.

自定义

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//设置下拉出现的小圆圈是否缩放出现，出现的位置，最大的下拉位置
 mSwipeRefreshLayout.setProgressViewOffset(true,R.attr.actionBarSize+20,200);

//设置下拉圆圈的大小，两个值 LARGE， DEFAULT
mySwipeRefreshLayout.setSize(SwipeRefreshLayout.LARGE);

// 禁用下拉刷新
mySwipeRefreshLayout.setEnabled(false);

// 设定下拉圆圈的背景颜色
mySwipeRefreshLayout.setProgressBackgroundColor(R.color.red);

// 设置下拉圆圈的颜色, 将按照该颜色顺序展示
mySwipeRefreshLayout.setColorSchemeResources(color1,color2);

Ultra Pull to Refresh

使用

配置

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build.gradle(project)

buildscript {
    repositories {
        jcenter()
        maven {
            url 'https://oss.sonatype.org/content/repositories/snapshots'
        }
    }
    ...
}
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build.gradle(app)
compile 'in.srain.cube:ultra-ptr:1.0.11'

布局文件

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<in.srain.cube.views.ptr.PtrClassicFrameLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/refresh_layout"
    android:layout_width="match_parent"
    android:layout_marginTop="?attr/actionBarSize"
    android:layout_height="match_parent">


    <android.support.v7.widget.RecyclerView
        android:id="@+id/news_rv"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

    </android.support.v7.widget.RecyclerView>

</in.srain.cube.views.ptr.PtrClassicFrameLayout>

刷新操作

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mRefreshLayout=(PtrFrameLayout)findViewById(R.id.refresh_layout);
mRefreshLayout.setLoadingMinTime(1000);
mRefreshLayout.setPullToRefresh(true);
...
mRefreshLayout.setPtrHandler(new PtrHandler() {
    @Override
    public boolean checkCanDoRefresh(PtrFrameLayout frame, View content, View header) {

        // here check list view, not content.
        return PtrDefaultHandler.checkContentCanBePulledDown(frame,content, header);
    }

    @Override
    public void onRefreshBegin(PtrFrameLayout frame) {
        pageNum+=1;
        updateDatas(service,apiKey,pageNum);
    }
});

public void updateDatas(Api.NewsService service,String apiKey,int pageNum){
        service.getList(apiKey,pageNum)
                .subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(new Subscriber<News>() {
                    @Override
                    public void onCompleted() {
                    }

                    @Override
                    public void onError(Throwable e) {
                    }

                    @Override
                    public void onNext(News news) {
                        datas=news.getShowapi_res_body().getPagebean().getContentlist();
                        notifyDatasetChanged(datas);
                        mRefreshLayout.refreshComplete();
                    }
                });
    }