如何使用Retrofit在android中传递图像？

Question

你好，我正在使用改造上传图像文件。 任何一个可以有想法如何

Answer 1

public static MultipartBody.Part UploadImage(String filePath,String param) { 

    MultipartBody.Part body = null; 
    try { 
     body = MultipartBody.Part.createFormData("", "", null); 
    } catch (Exception e) { 
     e.printStackTrace(); 
    } 
    //profileUpdateRequest.setWebsite(lblWebsite.getText().toString().trim()); 
    if ((!filePath.equals(""))) { 
     File file = new File(filePath); 
     RequestBody photo = RequestBody.create(MediaType.parse("image/*"), file); 
     body = MultipartBody.Part.createFormData(param, file.getName(), photo); 
    } 
    return body; 

}

步骤:: 1PASS的文件路径，它会回报你多体

@Multipart 
@POST(Endpoint.POST_URL) 
Call<DecisionStepThirdResponse> uploadUserProfile(@Part("api_id") RequestBody api_id, 
               @Part("api_secret") RequestBody api_secret, 
               @Part("api_request") RequestBody api_request, 
               @Part("data") RequestBody data, 
               @Part MultipartBody.Part profile_image); 

=============== =========

步骤2：通过像这样

public void uploadUserProfile(UpdateImageRequest request, MultipartBody.Part file, Callback<UpdateImageResponse> callback) { 
    String api_request = "uploadUserProfile"; 
    String data = new Gson().toJson(request); 
    IRoidAppHelper.Log("application_form_permission", data); 
    json().uploadUserProfile(
      RequestBody.create(MediaType.parse("text/plain"), api_id), 
      RequestBody.create(MediaType.parse("text/plain"), api_secret), 
      RequestBody.create(MediaType.parse("text/plain"), api_request), 
      RequestBody.create(MediaType.parse("text/plain"), data) 
      , file).enqueue(callback); 
} 

请求

步骤3：并通过参数在你的服务类

Answer 2

传给你需要传递mulitypart对象改装：

MultipartBody.Part carImage = null; 
    if (!TextUtils.isEmpty(imagePath)) { 
     File file = FileUtils.getFile(getContext(), imagePath); 
     // create RequestBody instance from file 
     final RequestBody requestFile = 
       RequestBody.create(MediaType.parse("multipart/form-data"), file); 
     // MultipartBody.Part is used to send also the actual file name 
     carImage = MultipartBody.Part.createFormData("image", file.getName(), requestFile); 
    } 

Answer 3

请通过以下link。

Answer 4

有时间请参考以下链接:)

https://medium.com/@adinugroho/upload-image-from-android-app-using-retrofit-2-ae6f922b184c#.iinz6neii

Answer 5

第1步：首先初始化服务类

public interface ImageUploadService { 
    @Multipart 
    @POST("upload") 
    Call<ResponseBody> upload(
     @Part("description") RequestBody description, 
     @Part MultipartBody.Part file 
    ); 
} 

第2步：在下一步使用本你想要上传图片或文件

private void uploadFile(Uri fileUri) { 
    // create upload service client 
    FileUploadService service = 
      ServiceGenerator.createService(ImageUploadService.class); 

    // https://github.com/iPaulPro/aFileChooser/blob/master/aFileChooser/src/com/ipaulpro/afilechooser/utils/FileUtils.java 
    // use the FileUtils to get the actual file by uri 
    File file = FileUtils.getFile(this, fileUri); 

    // create RequestBody instance from file 
    RequestBody requestFile = 
      RequestBody.create(
         MediaType.parse(getContentResolver().getType(fileUri)), 
         file 
      ); 

    // MultipartBody.Part is used to send also the actual file name 
    MultipartBody.Part body = 
      MultipartBody.Part.createFormData("picture", file.getName(), requestFile); 

    // add another part within the multipart request 
    String descriptionString = "hello, this is description speaking"; 
    RequestBody description = 
      RequestBody.create(
        okhttp3.MultipartBody.FORM, descriptionString); 

    // finally, execute the request 
    Call<ResponseBody> call = service.upload(description, body); 
    call.enqueue(new Callback<ResponseBody>() { 
     @Override 
     public void onResponse(Call<ResponseBody> call, 
           Response<ResponseBody> response) { 
      Log.v("Upload", "success"); 
     } 

     @Override 
     public void onFailure(Call<ResponseBody> call, Throwable t) { 
      Log.e("Upload error:", t.getMessage()); 
     } 
    }); 
} 

步骤3：你可以使用这样

uploadFile(Uri.fromFile(new File("/sdcard/cats.jpg"))); 

在您的活动。

最后一步：你需要添加

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> 

在清单在additon与

<uses-permission android:name="android.permission.INTERNET"/> 

参考this。

您可以上传任何类型的文件。

Answer 6

/* Create interface like below. */ 

public interface uploadWishImage { 

    @Multipart 
    @POST("upload/image") 
    Call<JsonObject> postImage(@Part MultipartBody.Part image, @Part("name") RequestBody name); 
} 

/* image upload code */ 

    File file = new File("here your file path"); 
     RequestBody reqFile = RequestBody.create(MediaType.parse("image/*"), file); 
     MultipartBody.Part body = MultipartBody.Part.createFormData("file", file.getName(), reqFile); 
     RequestBody name = RequestBody.create(MediaType.parse("text/plain"), "file"); 
     uploadWishImage postService = RetrofitApi.makeNetworkRequestWithHeaders(AddWish.this).create(uploadWishImage.class); 
     Call<JsonObject> call = postService.postImage(body, name); 
     call.enqueue(new Callback<JsonObject>() { 
      @Override 
      public void onResponse(Call<JsonObject> call, Response<JsonObject> response) { 
       // somethings to do with reponse 

      } 

      @Override 
      public void onFailure(Call<JsonObject> call, Throwable t) { 
       // Log error here since request failed 



      } 
     });