Android Retrofit keine Antwort

Question

HALLO Ich bin nur neue Service nachzurüsten und folgte diesem Tutorial https://www.simplifiedcoding.net/retrofit-android-tutorial-to-get-json-from-server/ es gut funktioniert und wollte meine eigene erstellen, so habe ich eine neue json Web http://api.androidhive.info/contacts/ die

{ 
"contacts": [ 
    { 
      "id": "c200", 
      "name": "Ravi Tamada", 
      "email": "ravi@gmail.com", 
      "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": "johnny_depp@gmail.com", 
      "address": "xx-xx-xxxx,x - street, x - country", 
      "gender" : "male", 
      "phone": { 
       "mobile": "+91 0000000000", 
       "home": "00 000000", 
       "office": "00 000000" 
      } 
    }, 
    { 
      "id": "c202", 
      "name": "Leonardo Dicaprio", 
      "email": "leonardo_dicaprio@gmail.com", 
      "address": "xx-xx-xxxx,x - street, x - country", 
      "gender" : "male", 
      "phone": { 
       "mobile": "+91 0000000000", 
       "home": "00 000000", 
       "office": "00 000000" 
      } 
    }, 
    { 
      "id": "c203", 
      "name": "John Wayne", 
      "email": "john_wayne@gmail.com", 
      "address": "xx-xx-xxxx,x - street, x - country", 
      "gender" : "male", 
      "phone": { 
       "mobile": "+91 0000000000", 
       "home": "00 000000", 
       "office": "00 000000" 
      } 
    }, 
    { 
      "id": "c204", 
      "name": "Angelina Jolie", 
      "email": "angelina_jolie@gmail.com", 
      "address": "xx-xx-xxxx,x - street, x - country", 
      "gender" : "female", 
      "phone": { 
       "mobile": "+91 0000000000", 
       "home": "00 000000", 
       "office": "00 000000" 
      } 
    }, 
    { 
      "id": "c205", 
      "name": "Dido", 
      "email": "dido@gmail.com", 
      "address": "xx-xx-xxxx,x - street, x - country", 
      "gender" : "female", 
      "phone": { 
       "mobile": "+91 0000000000", 
       "home": "00 000000", 
       "office": "00 000000" 
      } 
    }, 
    { 
      "id": "c206", 
      "name": "Adele", 
      "email": "adele@gmail.com", 
      "address": "xx-xx-xxxx,x - street, x - country", 
      "gender" : "female", 
      "phone": { 
       "mobile": "+91 0000000000", 
       "home": "00 000000", 
       "office": "00 000000" 
      } 
    }, 
    { 
      "id": "c207", 
      "name": "Hugh Jackman", 
      "email": "hugh_jackman@gmail.com", 
      "address": "xx-xx-xxxx,x - street, x - country", 
      "gender" : "male", 
      "phone": { 
       "mobile": "+91 0000000000", 
       "home": "00 000000", 
       "office": "00 000000" 
      } 
    }, 
    { 
      "id": "c208", 
      "name": "Will Smith", 
      "email": "will_smith@gmail.com", 
      "address": "xx-xx-xxxx,x - street, x - country", 
      "gender" : "male", 
      "phone": { 
       "mobile": "+91 0000000000", 
       "home": "00 000000", 
       "office": "00 000000" 
      } 
    }, 
    { 
      "id": "c209", 
      "name": "Clint Eastwood", 
      "email": "clint_eastwood@gmail.com", 
      "address": "xx-xx-xxxx,x - street, x - country", 
      "gender" : "male", 
      "phone": { 
       "mobile": "+91 0000000000", 
       "home": "00 000000", 
       "office": "00 000000" 
      } 
    }, 
    { 
      "id": "c2010", 
      "name": "Barack Obama", 
      "email": "barack_obama@gmail.com", 
      "address": "xx-xx-xxxx,x - street, x - country", 
      "gender" : "male", 
      "phone": { 
       "mobile": "+91 0000000000", 
       "home": "00 000000", 
       "office": "00 000000" 
      } 
    }, 
    { 
      "id": "c2011", 
      "name": "Kate Winslet", 
      "email": "kate_winslet@gmail.com", 
      "address": "xx-xx-xxxx,x - street, x - country", 
      "gender" : "female", 
      "phone": { 
       "mobile": "+91 0000000000", 
       "home": "00 000000", 
       "office": "00 000000" 
      } 
    }, 
    { 
      "id": "c2012", 
      "name": "Eminem", 
      "email": "eminem@gmail.com", 
      "address": "xx-xx-xxxx,x - street, x - country", 
      "gender" : "male", 
      "phone": { 
       "mobile": "+91 0000000000", 
       "home": "00 000000", 
       "office": "00 000000" 
      } 
    } 
] 

I enthält meine eigene Schnittstelle implementiert ContactAPI.java

public interface ContactsAPI { 
@GET("/contacts/") 
public void getContacts(Callback<List<Contact>> response);} 

und umgesetzt Modellklasse wie diese Contact.java

public class Contact { 

@SerializedName("id") 
@Expose 
private String id; 
@SerializedName("name") 
@Expose 
private String name; 
@SerializedName("email") 
@Expose 
private String email; 
@SerializedName("address") 
@Expose 
private String address; 
@SerializedName("gender") 
@Expose 
private String gender; 
public String getId() {return id;} 
public void setId(String id) {this.id = id;} 
public String getName() {return name;} 
public void setName(String name) {this.name = name;} 
public String getEmail() {return email;} 
public void setEmail(String email) {this.email = email;} 
public String getAddress() {return address;} 
public void setAddress(String address) {this.address = address;} 
public String getGender() {return gender;} 
public void setGender(String gender) {this.gender = gender;}} 

dann umgesetzt schließlich mein Restadapter in MainActivity.class

public static final String ROOT_URL = "http://api.androidhive.info"; 
    private ListView listView; 
    private List<Contact> contacts; 
    RestAdapter adapter = new RestAdapter.Builder().setEndpoint(ROOT_URL).build(); 
    ContactsAPI api = adapter.create(ContactsAPI.class); 

    api.getContacts(new Callback<List<Contact>>() { 
     @Override 
     public void success(List<Contact> list, Response response) { 
      Toast.makeText(MainActivity.this,list.toString(),Toast.LENGTH_SHORT).show(); 
      showList(); 
     } 

     @Override 
     public void failure(RetrofitError error) { 
      //you can handle the errors here 
      Toast.makeText(MainActivity.this,"Error Occured:"+error.toString(),Toast.LENGTH_SHORT).show(); 
     } 
    }); 

Die App reibungslos läuft aber nach einer 4-Sekunden-Verzögerung wird es einen Fehler promt, die ich weiß nicht, public void Versagen (RetrofitError Fehler) ist das, was ich bin fehlt Ich habe meinen Code überprüft und kann nichts falsch finden. Bitte helfen Sie mir, danke im Voraus.

Answer 1

wenn die json dies benötigen Sie eine Klasse mit:

public class Contacts { 
    @SerializedName("contacts") 
    @Expose 
    private List<Contact> contacts = new ArrayList<Contact>(); 

    /** 
    * 
    * @return 
    * The contacts 
    */ 
    public List<Contact> getContacts() { 
     return contacts; 
    } 

    /** 
    * 
    * @param contacts 
    * The contacts 
    */ 
    public void setContacts(List<Contact> contacts) { 
     this.contacts = contacts; 
    } 

} 

Auch in Ihrer Schnittstelle ContactAPI.java

public interface ContactsAPI { 
    @GET("/contacts/") 
    public void getContacts(Callback<Contacts> response); 
} 

Auch diesen Link überprüfen, weil es ein Problem mit "+" ist, dies error