抑制Android Studio中潜在的NullPointerException [英] Suppress potential NullPointerException in Android Studio
问题描述
此:
@Nullable
Item[] mItems;
public Item getItem(int position) {
return mItems[position];
}
产生警告:
Array access 'mItems[position]' may produce NullPointerException
我想禁止显示此警告(我知道如果mItems为null不会调用getItem()).
I want to suppress this warning (I know that getItem() will not be called if mItems is null).
我尝试使用以下注释:
-
@SuppressWarnings({"NullableProblems"}) -
@SuppressWarnings({"null"})
@SuppressWarnings({"NullableProblems"})@SuppressWarnings({"null"})
以及//noinspection表示法，但是它们都不起作用.
as well as with the //noinspection notation, but they're all not working.
使用@SuppressWarnings({"all"})可以，但是显然不是我想要的.
Using @SuppressWarnings({"all"}) works, but it's obviously not what I'm looking for.
当我按下 alt + enter 时，Android Studio没有提供任何抑制选项，而只是添加(无用)空检查的选项.
Android Studio doesn't offer any suppression option when I hit alt + enter, just the options to add a (useless) null check.
推荐答案
这对我有用，但不确定为什么AS希望使用恒定条件作为抑制器.我认为这与skip null检查有关，因为它是一个恒定的条件(即，它永远不会为null).
This works for me, but not sure why AS would want to use constant conditions as the suppressor. I think it has something to do with the skip null check as it's a constant condition (i.e., it'll always not be null).
@Nullable
Item[] mItems;
@SuppressWarnings("ConstantConditions")
public Item getItem(int position) {
return mItems[position];
}
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