Java 如何在活动中显示mylist以分割android
我希望我能从一个显示我的列表的片段中的站点获得信息 请参阅以下代码:Java 如何在活动中显示mylist以分割android,java,android,json,android-fragments,fragment,Java,Android,Json,Android Fragments,Fragment,我希望我能从一个显示我的列表的片段中的站点获得信息 请参阅以下代码: 正如您在活动中所看到的,我所做的工作是“我希望它在我的嘴里”homefragment显示,请指导我您的活动中有两个选项卡(主页和新建),对吗?你想在主片段中显示内容吗?如果这就是你的意思 在HomeFragment类中执行异步任务。并在OnCreateView()方法或OnViewCreated()方法中执行异步任务。我在粘贴的代码中没有看到execute语句 2.无需更改AsyncTask部分中的任何内容,但如果您已将“t
正如您在活动中所看到的,我所做的工作是“我希望它在我的嘴里”homefragment显示,请指导我您的活动中有两个选项卡(主页和新建),对吗?你想在主片段中显示内容吗?如果这就是你的意思
public HomeFragment() {
// Required empty public constructor
}
private ListView lv;
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
lv = (ListView) getActivity().findViewById(R.id.lv);
new mytask().execute("http://musiqikurdi.com/api/get_recent_posts/");
}
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
ViewGroup rootView = (ViewGroup) inflater.inflate(R.layout.fragment_home,container,false);
return rootView;
}
public class mytask extends AsyncTask<String,String,List<MusicModel>> {
@Override
protected List<MusicModel> doInBackground(String... params) {
HttpURLConnection connection = null;
BufferedReader reader = null;
try {
URL url = new URL(params[0]);
connection = (HttpURLConnection) url.openConnection();
connection.connect();
InputStream stream = connection.getInputStream();
reader = new BufferedReader(new InputStreamReader(stream));
StringBuffer buffer = new StringBuffer();
String line = "";
while ((line = reader.readLine()) != null)
{
buffer.append(line);
}
String finalJSON = buffer.toString();
JSONObject parentobject = new JSONObject(finalJSON);
JSONArray parentarray = parentobject.getJSONArray("posts");
StringBuffer finalbufferData = new StringBuffer();
List<MusicModel> musicModelList = new ArrayList<>();
for(int i=0; i < parentarray.length(); i++) {
JSONObject finalobject = parentarray.getJSONObject(i);
MusicModel musicModel = new MusicModel();
musicModel.setId(finalobject.getString("id"));
musicModel.setTitle(finalobject.getString("title").replaceAll("[\\–]", ""));
musicModel.setUrl(finalobject.getString("url").replaceAll("[\\–]", ""));
musicModel.setDate(finalobject.getString("date").replaceAll("[\\–]", ""));
List<MusicModel.category> cateList = new ArrayList<>();
for(int j = 0; j < finalobject.getJSONArray("categories").length(); j++ )
{
MusicModel.category cate = new MusicModel.category();
cate.setCateTitle(finalobject.getJSONArray("categories").getJSONObject(j).getString("title"));
cateList.add(cate);
}
musicModel.setListCategory(cateList);
musicModelList.add(musicModel);
}
return musicModelList;
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
}finally {
if(connection != null) {
connection.disconnect();
}
try {
if(reader != null) {
reader.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
return null;
}
@Override
protected void onPostExecute(List<MusicModel> s) {
super.onPostExecute(s);
MusicAdapter adapter = new MusicAdapter(getActivity(),R.layout.row,s);
lv.setAdapter(adapter);
}
}
public class MusicAdapter extends ArrayAdapter {
private List<MusicModel> musicModelList;
private int resource;
private LayoutInflater inflater;
public MusicAdapter(Context context, int resource, List<MusicModel> objects) {
super(getActivity(), resource, objects);
musicModelList = objects;
this.resource = resource;
inflater = (LayoutInflater) getActivity().getSystemService(getActivity().LAYOUT_INFLATER_SERVICE);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if(convertView == null)
{
convertView = inflater.inflate(R.layout.row,null);
}
ImageView img;
TextView txt1;
TextView txt2;
TextView txt3;
img = (ImageView)convertView.findViewById(R.id.img);
txt1 = (TextView)convertView.findViewById(R.id.txt1);
txt2 = (TextView)convertView.findViewById(R.id.txt2);
txt3 = (TextView)convertView.findViewById(R.id.txt3);
txt1.setText(musicModelList.get(position).getId());
txt2.setText(musicModelList.get(position).getTitle());
return convertView;
}
}
public homepragment(){
//必需的空公共构造函数
}
私有ListView lv;
@凌驾
已创建视图上的公共void(视图,@Nullable Bundle savedInstanceState){
super.onViewCreated(视图,savedInstanceState);
lv=(ListView)getActivity().findViewById(R.id.lv);
新建mytask()。执行(“http://musiqikurdi.com/api/get_recent_posts/");
}
@凌驾
创建视图时的公共视图(LayoutFlater充气机、@Nullable ViewGroup容器、@Nullable Bundle savedInstanceState){
视图组rootView=(视图组)充气器。充气(R.layout.fragment\u home,container,false);
返回rootView;
}
公共类mytask扩展了AsyncTask{
@凌驾
受保护列表doInBackground(字符串…参数){
HttpURLConnection=null;
BufferedReader reader=null;
试一试{
URL=新URL(参数[0]);
connection=(HttpURLConnection)url.openConnection();
connection.connect();
InputStream=connection.getInputStream();
reader=新的BufferedReader(新的InputStreamReader(流));
StringBuffer=新的StringBuffer();
字符串行=”;
而((line=reader.readLine())!=null)
{
buffer.append(行);
}
字符串finalJSON=buffer.toString();
JSONObject parentobject=新的JSONObject(finalJSON);
JSONArray parentarray=parentobject.getJSONArray(“posts”);
StringBuffer finalbufferData=新的StringBuffer();
List musicModelList=new ArrayList();
对于(int i=0;i
}那么..您希望活动的内容显示在屏幕上吗?你看过我指的那篇文章了吗?你还试过别的吗?让我们看看你的研究。请只包括t