如何使用Retrofit 2在Android上同时更新用户个人资料文本字段和个人资料照片

Question

I'am using Retrofit 2.I'am trying to implement "PATCH" method to updating profile photo on main thread.I also tried on Postman.I can update the profile photo.

PATCH request success

This is my interface when I use calls.Also UpdateUser is the model w

 @PATCH("user/{username}/")
Call<User> updateUserProfile(@Path("username") String username, @Body UpdateUser User);

---

This is my User Model

public class User {

@SerializedName("username")
@Expose
private String username;

@SerializedName("first_name")
@Expose
private String firstName;

@SerializedName("last_name")
@Expose
private String lastName;

@SerializedName("profile_photo")
@Expose
private String profilePhoto;

public String getUsername() {
    return username;
}

public void setUsername(String username) {
    this.username = username;
}

public String getFirstName() {
    return firstName;
}

public void setFirstName(String firstName) {
    this.firstName = firstName;
}

public String getLastName() {
    return lastName;
}

public void setLastName(String lastName) {
    this.lastName = lastName;
}

public String getProfilePhoto() {
    return profilePhoto;
}

public void setProfilePhoto(String profilePhoto) {
    this.profilePhoto = profilePhoto;
}

---

This is my ProfileUpdatePresenter I handle request here

   public class ProfileUpdatePresenter
  {
  private ProfileUpdateView profileView;
  private ApiInterface apiInterface =           
  MyAPIClient.getClient().create(ApiInterface.class);

  public ProfileUpdatePresenter(ProfileUpdateView profileView) {
    this.profileView = profileView;
  }

I get user on this method

public void getUserProfile(Activity activity, String username) {
    apiInterface.getUserProfile(username).enqueue(new CustomCallBack<User>(activity) {
        @Override
        public void onResponse(@NonNull Call<User> call, @NonNull Response<User> response) {
            super.onResponse(call,response);
            if(response.isSuccessful()) {
                profileView.onProfileGet(response.body());
            }
        }

        @Override
        public void onFailure(@NonNull Call<User> call, @NonNull Throwable t) {
            super.onFailure(call,t);
        }
    });
}

---

I update User here

 public void updateUserProfile(Activity activity, String Username, UpdateUser User){
    apiInterface.updateUserProfile(Username,User).enqueue(new CustomCallBack<User>(activity) {
        @Override
        public void onResponse(@NonNull Call<User> call, @NonNull Response<User> response) {
            super.onResponse(call,response);
            if(response.isSuccessful()) {
                profileView.onUpdateSucceed(response.body());
            }
        }
        @Override
        public void onFailure(@NonNull Call<User> call, @NonNull Throwable t) {
            super.onFailure(call,t);

        }
    });

---

On my UpdateProfile Activity.I get the user by implementing My presenter's methods.Then also I update here.But I'am confused on how to update my profile photo here.

 @Override
public void onProfileGet(@NotNull User user) {
    UserProfile = user;
    if(UserProfile.getFirstName() != null)
        et_name.setText(UserProfile.getFirstName());
    if(UserProfile.getLastName() != null)
        et_surname.setText(UserProfile.getLastName());
    if(UserProfile.getPhone() != null)
 }

---

I also use interface to implement methods that I use on main thread

public interface ProfileUpdateView {
void onProfileGet(@NotNull User user);
void onUpdateSucceed(@NotNull User user);

}

---

To be honest The main Problem for me is how to Use My Old @PATCH for updating the profile photo.Basically How to combine these on one Call?

@PATCH("user/{username}/")
Call<User> updateUserProfile(@Path("username") String username, @Body UpdateUser User);
   + 
@Multipart
@PATCH("/retrofit_tutorial/retrofit_client.php")
Call<ServerResponse> uploadFile(@Part MultipartBody.Part file, @Part("file") RequestBody name);

Answer 1

If you can modify server's API to @POST + Multipart then you can do following:

@Multipart
@POST("user/{username}/")
Call<User> updateUserProfile(
        @Path("username") String username,
        @Part MultipartBody.Part photo,
        @Part("json_user") String jsonUser
);

// Some Utils for request
public MultipartBody.Part fileToPart(File file) {
    return MultipartBody.Part.createFormData(
            "photo", // param name
            file.getName(),
            RequestBody.create(MediaType.parse("image/*"), file)
    );
}

// usage 
updateUserProfile("Dude", fileToPart(myFile), new Gson().toJson(myUpdateUser))