ich Anfänger sind in Android Studio,RecyclerView innerhalb Fragmen gibt es keinen Fehler mit meinem Code
ich mit RecyclerView irgendein Problem habe innerhalb Fragment.I nicht in der Lage ist, den Fehler in meinem code.When ich meine app laufen zu finden es läuft, aber wenn ich bestimmte Fragment öffnen zeigt es click me for screen shot,
meinen Code hinzufügen ist als
ListFragment.java
public class ListFragment extends Fragment {
//this is the JSON Data URL
//make sure you are using the correct ip else it will not work
final String URL_PRODUCTS = "http://192.168.0.12/Api.php";
//a list to store all the products
List<Person> personList;
//the recyclerview
RecyclerView recyclerView;
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Toast.makeText(MainActivity.appContext, "Created", Toast.LENGTH_SHORT).show();
}
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_list, container, false);
Toast.makeText(MainActivity.appContext, "Created in View", Toast.LENGTH_SHORT).show();
//getting the recyclerview from xml
recyclerView = (RecyclerView) rootView.findViewById(R.id.recylcerView);
//initializing the productlist
personList = new ArrayList<>();
//this method will fetch and parse json
//to display it in recyclerview
loadProducts();
return rootView;
}
private void loadProducts() {
/*
* Creating a String Request
* The request type is GET defined by first parameter
* The URL is defined in the second parameter
* Then we have a Response Listener and a Error Listener
* In response listener we will get the JSON response as a String
* */
StringRequest stringRequest = new StringRequest(Request.Method.POST, URL_PRODUCTS,
new Response.Listener<String>() {
@Override
public void onResponse(String response) {
try {
//converting the string to json array object
JSONArray array = new JSONArray(response);
//traversing through all the object
for (int i = 0; i < array.length(); i++) {
//getting product object from json array
JSONObject product = array.getJSONObject(i);
//adding the product to product list
personList.add(new Person(
product.getInt("id"),
product.getString("title"),
product.getString("shortdesc"),
product.getDouble("rating"),
product.getDouble("price"),
product.getString("image")
));
}
//creating adapter object and setting it to recyclerview
PersonsAdapter adapter = new PersonsAdapter(MainActivity.appContext, personList);
recyclerView.setAdapter(adapter);
recyclerView.setLayoutManager(new LinearLayoutManager(MainActivity.appContext));
} catch (JSONException e) {
e.printStackTrace();
}
}
},
new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
}
});
//adding our stringrequest to queue
Volley.newRequestQueue(MainActivity.appContext).add(stringRequest);
}
}
folgt
der folgende Code, den ich verwenden, um das Fragment das das sollte die Fragmente seine zweite Parameter
fragmentManager.beginTransaction().replace(R.id.frame_container, new MyListFragment(), "MyListFragment").commit();
-Code
fragmentManager.beginTransaction().replace(R.id.frame_container, new ListFragment(), "ListFragment").commit();
versuchen, Debugging. Wir können nicht debuggen auf Ihrem Code ohne den Server –
Wie kann ich tun? @ Tomin B –
Add Beakpoint und Debug-Anwendung –