尝试在空对象引用上调用虚拟方法 'java.lang.String okhttp3.ResponseBody.string()'

Question

response.body().string()

有问题在 Whosebug 中搜索了所有 post。
无法解决此问题。

 private void signIn() {
    Call<ResponseBody> call = ApiClient.getUserService().createUser(client_fullname, email, nationality, phone, dob, password, cpassword);
    call.enqueue(new Callback<ResponseBody>() {
        @Override
        public void onResponse(Call<ResponseBody> call, Response<ResponseBody> response) {
            System.out.println("The value of response is" + response.isSuccessful());

            ResponseBody result = response.body();
            try {
                myapiResult = result.string();
            } catch (IOException e) {
                e.printStackTrace();
            }

  
  if (response.isSuccessful()) {
                clearEditText();
                showAlertDialogBox("Sucessfully Submitted", "Thanks for believing us.", 1);
            }


          else if (myapiResult.equals(email)) {
                showAlertDialogBox("Error", "Already Registered.Please Login", 1);

            }

Answer 1

您的回复为空，请先检查以避免崩溃。

if(response.body() != null) {
        String s = response.body().string();
    }

然后你需要从后端发送适当的响应以避免body为空。

尝试在空对象引用上调用虚拟方法 'java.lang.String okhttp3.ResponseBody.string()'

Attempt to invoke virtual method 'java.lang.String okhttp3.ResponseBody.string()' on a null object reference

java

android

retrofit