Warn:Null pointer access: The variable addressList can only be null at this location
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出现这个warn的原因是写了一段这样的代码:
@Overridepublic void SuccessCallback(AddressBean addressList) {// TODO Auto-generated method stubif (addressList == null && addressList.getDomainList().size() <= 0)return;
警示在if判断里的第二个addressList,warn警示的是空指针访问,因为疏忽判断语句写的是“与”,也就是即使addressList为空的情况下,addressList.getDomainList().size()也会执行,程序必然崩溃。
解决方法:将“”&&“按正确的逻辑改成“||”,warn就消除了。
敲打自己:warn也值得关注喔,至少有的时候,还可以间接指出程序编写逻辑错误。
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