是什么导致hashmap android中的indexoutofbound？

Question

 protected String doInBackground(String... strings) {

            hashMap=new HashMap<String, String>();
            hashMap.put("firstname",strings[0]);
            hashMap.put("lastname",strings[1]);
            hashMap.put("email",strings[2]);
            hashMap.put("password",strings[3]);
            finalResult=httpParse.postRequest(hashMap,httpUrl);
            return finalResult;
        }

这是android studio调用Index out of bound错误的代码。

  

引起：java.lang.ArrayIndexOutOfBoundsException：length = 0;索引= 0                                                                                     在   com.example.fayaz.registration.MainActivity $ 1UserRegisterClass.doInBackground（MainActivity.java:98）                                                                                     在   com.example.fayaz.registration.MainActivity $ 1UserRegisterClass.doInBackground（MainActivity.java:76）                                                                                     在android.os.AsyncTask $ 2.call（AsyncTask.java:295）                                                                                     在java.util.concurrent.FutureTask.run（FutureTask.java:237）                                                                                     在android.os.AsyncTask $ SerialExecutor $ 1.run（AsyncTask.java:234）                                                                                     在   java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1113）                                                                                     在   java.util.concurrent.ThreadPoolExecutor中的$ Worker.run（ThreadPoolExecutor.java:588）                                                                                     在java.lang.Thread.run（Thread.java:818）

Answer 1

您正在使用varargs doInBackground(String... strings)

strings数组的长度为0，因此是ArrayIndexOutOfBoundsException。