IndexOutOfBoundsException: Index: 0, Size: 0

Question

How do I apply this(Click This Link) to my application? Thank you!

Log Cat:

java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
    at java.util.ArrayList.get(ArrayList.java:437)
    at com.example.workhours.view_hours$1.onSwiped(view_hours.java:65)

Code:

This is the line where the error occurred:

(line: 65) final String x = listShift.get(viewHolder.getAdapterPosition()).getDate();

Additional Information:

public class MainActivity extends AppCompatActivity implements View.OnClickListener{


ArrayList<newNote> list;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    list = new ArrayList<>();
}

that says that your `lifshift` is empty, and you are trying to access the element which is not there. — Vir Rajpurohit, Feb 24 '20 at 06:36
How do I go about fixing that exactly? this is what I did: ArrayList list; and on the oncreate method I put "list = new ArrayList<>();" — WelcomeToTheDarkSide, Feb 24 '20 at 06:42
Thank you! But it seems like my list is empty. Do you know how I can initialize my list? — WelcomeToTheDarkSide, Feb 24 '20 at 07:07

score 1 · Answer 1 · answered Feb 24 '20 at 06:41

1

Here is how you can handle the exception, use ternary operator:

final String x = listShift.size() < viewHolder.getAdapterPosition()+1 ? null: listShift.get(viewHolder.getAdapterPosition()).getDate();

answered Feb 24 '20 at 06:41

Bilal Siddiqui

3,579
1
13
20

Thank you! But it seems like my list is empty. Do you know how I can initialize my list? – WelcomeToTheDarkSide Feb 24 '20 at 07:07
1

Thank you I fixed it! what I did was "listShift = myDb.viewAllHours();" – WelcomeToTheDarkSide Feb 24 '20 at 07:16

ankit giri · Accepted Answer · 2020-02-24T07:52:39.390

0

Step 1:Print/Check the value returned by viewHolder.getAdapterPosition()

Step 2:Check the size of List by listShift.size()

Reason why is it happening:

Value of viewHolder.getAdapterPosition() < 0
Value of viewHolder.getAdapterPosition() > listShift.size()
List is empty

edited Feb 24 '20 at 07:52

answered Feb 24 '20 at 06:46

ankit giri

388
3
11

I did "listShift.size()" and it returned 0 – WelcomeToTheDarkSide Feb 24 '20 at 07:00
How do I fix that please. I am not sure. Thank you very much! – WelcomeToTheDarkSide Feb 24 '20 at 07:00
1

Thank you I fixed it! what I did was "listShift = myDb.viewAllHours();" – WelcomeToTheDarkSide Feb 24 '20 at 07:15

score 0 · Answer 3 · answered Jun 15 '22 at 07:18

0

You need to initialize adapter if list is not empty. The Code that initializing adapter, adding list is not empty check worked me.

var list = ArrayList<String>()
list.add(item)
if(listArr.isNotEmpty()){
     adapter = Adapter(listArr)
}

answered Jun 15 '22 at 07:18

Abdulkerim Yıldırım

111
1
5

IndexOutOfBoundsException: Index: 0, Size: 0

3 Answers3