java - IndexOutOfBoundsException : Index: 0, 大小:0

Question

如何将此 ( Click This Link ) 应用于我的应用程序？谢谢!

日志猫:

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)

代码:

这是发生错误的行:

(第65行)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<>();
}

Answer 1

以下是处理异常的方法，使用三元运算符:

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