方法调用可能会产生 NullPointerException Retrofit Body [英] Method invocation may produce NullPointerException Retrofit Body

问题描述

我正在使用 Retrofit 2 从我的 API 获取响应并将其值存储在我的常量中，如下所示

I am using Retrofit 2 for get response from my API and store its value in my constant like below

if(response.isSuccessful()) {
                    constant.banner_on = response.body().getBanner_on();
                    constant.int_on = response.body().getInt_on();
                    constant.int_click = response.body().getInt_click();
                }

它向我发出警告，如下所示

It's giving me warning on all three like below

方法调用 getBanner_on 可能会产生 java.lang.nullPointerException

Method invocation getBanner_on may produce java.lang.nullPointerException

我很困惑，无法解决此警告.如果有人可以帮助我摆脱这种情况，请告诉我.

I am confused and unable to resolve this warning. Let me know if someone can help me to come out from this.

推荐答案

这只是一个警告，因为如果响应成功，它永远不会为空.您可以忽略它或环绕 if(response.body() != null) 以删除警告.

It is just a warning as it will never be null if the response is successful. You can ignore it or wrap around if(response.body() != null) to remove the warning.

Ads ads = response.body();
if(ads != null){
    constant.banner_on = ads.getBanner_on();
    // and so on.
}

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