侧拉

最新推荐文章于 2024-09-22 09:34:15 发布

qq_42521569

最新推荐文章于 2024-09-22 09:34:15 发布

阅读量148

点赞数

CC 4.0 BY-SA版权

本文链接：https://blog.youkuaiyun.com/qq_42521569/article/details/80859219

本文介绍了一个基于安卓平台的新闻应用布局实现方案及数据加载逻辑，包括使用XBanner进行轮播图展示、PullToRefreshListView实现下拉刷新与上拉加载更多功能。文章详细展示了如何初始化组件、设置监听器并实现数据请求与展示。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

子布局

<com.stx.xhb.xbanner.XBanner

android:id="@+id/banner"
android:layout_width="match_parent"
android:layout_height="200.0dip"
app:AutoPlayTime="3000"
app:pointNormal="@drawable/whit_shape"
app:pointSelect="@drawable/black_shape"
app:pointsContainerBackground="#44AAAAAA"
app:pointsPosition="CENTER"
app:tipTextColor="#FFFFFFFF"
app:tipTextSize="16.0sp" />

<com.handmark.pulltorefresh.library.PullToRefreshListView xmlns:ptr="http://schemas.android.com/apk/res-auto"
android:id="@+id/plv"
android:layout_width="match_parent"
android:layout_marginTop="10dp"
android:layout_height="0dp"
android:layout_weight="7"
android:numColumns="auto_fit"
ptr:ptrAnimationStyle="flip"
ptr:ptrDrawable="@drawable/default_ptr_flip"
ptr:ptrHeaderBackground="#383838"

ptr:ptrHeaderTextColor="#FFFFFF"></com.handmark.pulltorefresh.library.PullToRefreshListView>

主方法

private String path = "http://www.yulin520.com/a2a/impressApi/news/mergeList?pageSize=15&page=";
private List<String> images = new ArrayList<>();
private int page = 1;
private int i;
private XBanner banner;
private HttpUtils httpUtils;
private PullToRefreshListView plv;
private Handler handler = new Handler();
private List<NewBean.DataBean> list = new ArrayList<>();
private MyBase adapter;

public static Fragment getinstance(String title) {
Fragment001 fragment001 = new Fragment001();
Bundle bundle = new Bundle();
bundle.putString("title",title);
fragment001.setArguments(bundle);
return fragment001;
}
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

Bundle arguments = getArguments();
if(arguments.get("title").equals("头条")) {
View view = inflater.inflate(R.layout.fragment001, container, false);
images.add("http://img2.imgtn.bdimg.com/it/u=783340072,1312243264&fm=214&gp=0.jpg");
images.add("http://imageprocess.yitos.net/images/public/20160910/99381473502384338.jpg");
images.add("http://imageprocess.yitos.net/images/public/20160910/77991473496077677.jpg");
images.add("http://imageprocess.yitos.net/images/public/20160906/1291473163104906.jpg");

plv = view.findViewById(R.id.plv);
banner = view.findViewById(R.id.banner);
initViews();
banner.setData(images, null);
// XBanner适配数据
banner.setmAdapter(new XBanner.XBannerAdapter() {
@Override
public void loadBanner(XBanner banner, View view, int position) {
Glide.with(getActivity()).load(images.get(position)).into((ImageView) view);
}
});
banner.setPageTransformer(Transformer.Default);
banner.setPageChangeDuration(1000);

return view;
}
return banner;
}

private void initViews() {
plv.setMode(PullToRefreshListView.Mode.BOTH);
final ILoadingLayout startloading = plv.getLoadingLayoutProxy(true, false);
startloading.setPullLabel("下拉刷新");
startloading.setRefreshingLabel("正在刷新");
startloading.setReleaseLabel("放开刷新");
ILoadingLayout endloading = plv.getLoadingLayoutProxy(false, true);
endloading.setPullLabel("下拉刷新");
endloading.setRefreshingLabel("正在刷新");
endloading.setReleaseLabel("放开刷新");

plv.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener2<ListView>() {
@Override
public void onPullDownToRefresh(PullToRefreshBase<ListView> pullToRefreshBase) {
page = 1;
getData();
handler.postDelayed(new Runnable() {
@Override
public void run() {
plv.onRefreshComplete();
}
},2000);
startloading.setLastUpdatedLabel("上次更新时间:"+new SimpleDateFormat("HH:mm").format(new Date(System.currentTimeMillis())));
}

@Override
public void onPullUpToRefresh(PullToRefreshBase<ListView> pullToRefreshBase) {
page = 1;
getData();
handler.postDelayed(new Runnable() {
@Override
public void run() {
plv.onRefreshComplete();
}
},2000);
}
});
adapter = new MyBase(getActivity(),list);
plv.setAdapter(adapter);
}

public void getData(){

httpUtils= HttpUtils.getInstance();
String url = path+page;
httpUtils.getdata(url);
httpUtils.setHttpListener(new HttpUtils.HttpListener() {
@Override
public void getjsondata(String json) {
//请求数据
Gson gson = new Gson();
NewBean newBean = gson.fromJson(json, NewBean.class);
List<NewBean.DataBean> data = newBean.getData();
//展示数据
if(page == 1){
list.clear();
}
list.addAll(data);
adapter.notifyDataSetChanged();
}
});
}

main方法

private RadioGroup group;
private FragmentManager manager;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

group = findViewById(R.id.group);

//添加点击监听事件
group.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup radioGroup, int i) {
switch (i){
case R.id.but1:
manager = getSupportFragmentManager();
FragmentTransaction transaction = manager.beginTransaction();
transaction.replace(R.id.frame,new Fragment01());
transaction.commit();
}
}
});
}