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will JSON zu recyclerview mit Asynctask in Fragment analysieren, aber wenn Mittagessen App, App Absturz!Parsing JSON Recyclerview mit Asynctask in Fragment
das ist mein json Daten:
{
"contacts": [
{
"id": "c200",
"name": "erfan",
"email": "[email protected]",
"address": "xx-xx-xxxx,x - street, x - country",
"gender" : "male",
"phone": {
"mobile": "+91 0000000000",
"home": "00 000000",
"office": "00 000000"
}
},
{
"id": "c201",
"name": "Johnny Depp",
"email": "[email protected]",
"address": "xx-xx-xxxx,x - street, x - country",
"gender" : "male",
"phone": {
"mobile": "+91 0000000000",
"home": "00 000000",
"office": "00 000000"
}
}
]
}
Namen erhalten möchten, E-Mail, mobile
dies mein Fragment ist:
public class HttpHandler {
private static final String TAG = HttpHandler.class.getSimpleName();
public HttpHandler() {
}
public String makeServiceCall(String reqUrl) {
String response = null;
try {
URL url = new URL(reqUrl);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("GET");
// read the response
InputStream in = new BufferedInputStream(conn.getInputStream());
response = convertStreamToString(in);
} catch (MalformedURLException e) {
Log.e(TAG, "MalformedURLException: " + e.getMessage());
} catch (ProtocolException e) {
Log.e(TAG, "ProtocolException: " + e.getMessage());
} catch (IOException e) {
Log.e(TAG, "IOException: " + e.getMessage());
} catch (Exception e) {
Log.e(TAG, "Exception: " + e.getMessage());
}
return response;
}
private String convertStreamToString(InputStream is) {
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
StringBuilder sb = new StringBuilder();
String line;
try {
while ((line = reader.readLine()) != null) {
sb.append(line).append('\n');
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return sb.toString();
}
}
public class maghalat extends Fragment {
private RecyclerView recyclerView;
private DataAdapter adapter;
private View myFragmentView;
private String TAG = MainActivity.class.getSimpleName();
private ProgressDialog pDialog;
// URL to get contacts JSON
private static String url = "http://memaraneha.ir/Erfan/jsonravi.php";
List<jsonContent> listcontent=new ArrayList<>();
public jsonContent content;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
myFragmentView = inflater.inflate(R.layout.maghalat, container, false);
new GetContacts().execute();
return myFragmentView;
}
class GetContacts extends AsyncTask<Void, Void, Void> {
@Override
protected void onPreExecute() {
super.onPreExecute();
// Showing progress dialog
pDialog = new ProgressDialog(getActivity());
pDialog.setMessage("Please wait...");
pDialog.setCancelable(false);
pDialog.show();
}
@Override
protected Void doInBackground(Void... arg0) {
HttpHandler sh = new HttpHandler();
// Making a request to url and getting response
String jsonStr = sh.makeServiceCall(url);
Log.e(TAG, "Response from url: " + jsonStr);
if (jsonStr != null) {
try {
JSONObject jsonObj = new JSONObject(jsonStr);
// Getting JSON Array node
JSONArray contacts = jsonObj.getJSONArray("contacts");
// looping through All Contacts
for (int i = 0; i < contacts.length(); i++) {
JSONObject c = contacts.getJSONObject(i);
content.name=c.getString("name");
content.email=c.getString("email");
JSONObject phone = c.getJSONObject("phone");
content.mobile=phone.getString("mobile");
listcontent.add(content);
}
} catch (final JSONException e) {
Log.e(TAG, "Json parsing error: " + e.getMessage());
getActivity().runOnUiThread(new Runnable() {
@Override
public void run() {
Toast.makeText(getActivity().getApplicationContext(),
"Json parsing error: " + e.getMessage(),
Toast.LENGTH_LONG)
.show();
}
});
}
} else {
Log.e(TAG, "Couldn't get json from server.");
getActivity().runOnUiThread(new Runnable() {
@Override
public void run() {
Toast.makeText(getActivity().getApplicationContext(),
"Couldn't get json from server. Check LogCat for possible errors!",
Toast.LENGTH_LONG)
.show();
}
});
}
return null;
}
@Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
pDialog.dismiss();
/**
* Updating parsed JSON data into ListView
* */
recyclerView=(RecyclerView)myFragmentView.findViewById(R.id.recycler_view);
recyclerView.setHasFixedSize(true);
RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(getActivity().getApplicationContext());
recyclerView.setLayoutManager(layoutManager);
adapter=new DataAdapter(getActivity(),listcontent);
recyclerView.setAdapter(adapter);
}
}}
dies meine Httphandler ist
das ist mein Recycler Ansicht Adapter:
public class DataAdapter extends RecyclerView.Adapter<DataAdapter.ViewHolder> {
private Context context;
List<jsonContent> jcontent;
public DataAdapter(Context context,List<jsonContent> jcontent) {
this.context=context;
this.jcontent=jcontent;
}
@Override
public DataAdapter.ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.card_row, viewGroup, false);
return new ViewHolder(view);
}
@Override
public void onBindViewHolder(DataAdapter.ViewHolder viewHolder,int i) {
viewHolder.name.setText(jcontent.get(i).name);
viewHolder.email.setText(jcontent.get(i).email);
viewHolder.mobile.setText(jcontent.get(i).mobile);
}
@Override
public int getItemCount() {
return jcontent.size();
}
public class ViewHolder extends RecyclerView.ViewHolder{
private TextView name,email,mobile;
public ViewHolder(final View view) {
super(view);
name = (TextView)view.findViewById(R.id.name);
email = (TextView)view.findViewById(R.id.email);
mobile = (TextView)view.findViewById(R.id.mobile);
}
}
}
und dies ist jsonContent Klasse:
public class jsonContent {
public String name;
public String email;
public String mobile;
}
so, wo bin ich falsch? Bitte helfen Sie
wie dies tun posten Sie Ihre Log-Katze Fehler – Redman
was Fehler in logcat –
Beitrag zeigt Ihre Fehlermeldung bitte – Zain