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add : not null for items #737

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add : not null for items #737

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9 changes: 5 additions & 4 deletions pickerview/src/main/java/com/bigkoo/pickerview/adapter/ArrayWheelAdapter.java
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Original file line number Diff line number Diff line change
@@ -1,5 +1,7 @@
package com.bigkoo.pickerview.adapter;

import android.support.annotation.NonNull;

import com.contrarywind.adapter.WheelAdapter;

import java.util.List;
Expand All @@ -9,7 +11,6 @@
* @param <T> the element type
*/
public class ArrayWheelAdapter<T> implements WheelAdapter {


// items
private List<T> items;
Expand All @@ -18,11 +19,11 @@ public class ArrayWheelAdapter<T> implements WheelAdapter {
* Constructor
* @param items the items
*/
public ArrayWheelAdapter(List<T> items) {
public ArrayWheelAdapter(@NonNull List<T> items) {
this.items = items;

}

@Override
public Object getItem(int index) {
if (index >= 0 && index < items.size()) {
Expand All @@ -33,7 +34,7 @@ public Object getItem(int index) {

@Override
public int getItemsCount() {
return items.size();
return items == null ? 0 : items.size();
}

@Override
Expand Down