Mistake at RecyclerView

[Anderson]

When I try to add a paragraph RecyclerView Like this. AsyncTask

//mListFormOne — лист, который передается в адаптер
//mAdapter — адаптер, подключенный к RecyclerView
//record — новая запись для добавления в RecyclerView
mListFormOne.add(record);

mAdapter.notifyItemInserted(mListFormOne.size() - 1);

Once again, he makes a mistake:

Caused by: java.lang.IllegalStateException: Cannot call this method while RecyclerView is computing a layout or scrolling

at android.support.v7.widget.RecyclerView.assertNotInLayoutOrScroll(RecyclerView.java:2042)

at android.support.v7.widget.RecyclerView$RecyclerViewDataObserver.onItemRangeInserted(RecyclerView.java:4129)

at android.support.v7.widget.RecyclerView$AdapterDataObservable.notifyItemRangeInserted(RecyclerView.java:9302)

at android.support.v7.widget.RecyclerView$Adapter.notifyItemInserted(RecyclerView.java:5662)

at com.dugin_rostislav.dictionary.fragments.PageWords.addRecordFormOne(PageWords.java:60)

at com.dugin_rostislav.dictionary.MainActivity$LoadData.doInBackground(MainActivity.java:289)

at com.dugin_rostislav.dictionary.MainActivity$LoadData.doInBackground(MainActivity.java:207)

at android.os.AsyncTask$2.call(AsyncTask.java:287)

at java.util.concurrent.FutureTask.run(FutureTask.java:234)

            at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)

            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)

            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)

            at java.lang.Thread.run(Thread.java:856)

How do you fix that?

---

UPD_0:
Yuri,

mListFormTwo.add(record);

Handler handler = new Handler();
final Runnable r = new Runnable() {

public void run() {

mAdapter.notifyDataSetChanged();

}

};
handler.post(r);

Mistake:

 java.lang.RuntimeException: An error occured while executing doInBackground()

at android.os.AsyncTask$3.done(AsyncTask.java:304)

at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355)

at java.util.concurrent.FutureTask.setException(FutureTask.java:222)

at java.util.concurrent.FutureTask.run(FutureTask.java:242)

at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)

at java.lang.Thread.run(Thread.java:818)

Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.dugin_rostislav.dictionary.adapters.RecyclerWordsAdapter.notifyItemInserted(int)' on a null object reference

at com.dugin_rostislav.dictionary.fragments.PageWords.addRecordFormOne(PageWords.java:58)

at com.dugin_rostislav.dictionary.MainActivity$LoadData.doInBackground(MainActivity.java:289)

at com.dugin_rostislav.dictionary.MainActivity$LoadData.doInBackground(MainActivity.java:207)

at android.os.AsyncTask$2.call(AsyncTask.java:292)

at java.util.concurrent.FutureTask.run(FutureTask.java:237)

            at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)

            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)

            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)

            at java.lang.Thread.run(Thread.java:818)

[Raziyah00]

According to the https://stackoverflow.com/a/32644466/3212712 the adapter is being renovated with help. Handler:

Handler handler = new Handler();
final Runnable r = new Runnable() {

public void run() {

mAdapter.notifyItemInserted(mListFormOne.size() - 1);

}

};
handler.post(r);

On the en-SO, they're trying to explain it to the anglo-saxons and suggest another. https://stackoverflow.com/a/31069171/3212712 ♪