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最新推荐文章于 2024-10-08 05:30:00 发布

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最新推荐文章于 2024-10-08 05:30:00 发布

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本文链接：https://blog.youkuaiyun.com/weixin_44337058/article/details/88940495

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本文介绍了一个基于Android平台的Fragment1实现分页加载和下拉刷新功能的方法。通过使用SwipeRefreshLayout和RecyclerView组件，结合自定义适配器MyAdapter实现了数据的动态加载和更新。此外，还利用了ShowPresenter来发送请求参数并获取数据。

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package com.bawei.day3_30.frag;

import android.os.Handler;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.View;

import com.bawei.day3_30.R;
import com.bawei.day3_30.adapter.MyAdapter;
import com.bawei.day3_30.adapter.onLoadMoreListener;
import com.bawei.day3_30.base.BaseFragment;
import com.bawei.day3_30.bean.Show;
import com.bawei.day3_30.presenter.ShowPresenter;
import com.bawei.day3_30.view.ShowView;

import java.util.ArrayList;
import java.util.List;

lic class Fragment1 extends BaseFragment implements ShowView {

private Handler handler = new Handler();
private int page =1;
private RecyclerView recy;
private ShowPresenter showPresenter;
private SwipeRefreshLayout swip;
private List<Show> list;
@Override
protected int layoutResID() {
    return R.layout.fragment1;
}

@Override
protected void initView(View view) {
    recy = view.findViewById(R.id.recy);
    swip = view.findViewById(R.id.swip);
}

@Override
protected void initData() {
    //布局管理器
    LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getContext());
    recy.setLayoutManager(linearLayoutManager);

    showPresenter = new ShowPresenter(this);
    showPresenter.sendParameter(page+".json");

swip.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {

@Override
public void onRefresh() {
    page=1;
    showPresenter.sendParameter(page+".json");
    handler.postDelayed(new Runnable() {
        @Override
        public void run() {
            swip.setRefreshing(false);
        }
    },2000);
}

});

recy.addOnScrollListener(new onLoadMoreListener() {
@Override
protected void onLoading(int countItem, int lastItem) {
page++;
showPresenter.sendParameter(page+".json");
handler.postDelayed(new Runnable() {
@Override
public void run() {
swip.setRefreshing(false);
}
},6000);
}
});

}

@Override
protected void loadData() {
    Log.i("xxx", "loadData: 1");
}


@Override
public void onShow(List<Show> data) {
    //分页
    if (page==1){
        list = new ArrayList<>();
    }
    list.addAll(data);
    MyAdapter myAdapter = new MyAdapter(getContext(), list);
    recy.setAdapter(myAdapter);
    recy.scrollToPosition(myAdapter.getItemCount()-data.size()-1);
}

}