Xcode9.3 React-Native(RN) build 打包报错

本文主要是介绍Xcode9.3 React-Native(RN) build 打包报错，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

代码环境：
RN: 0.44+
Xcode 9.3

打包时会报下面几种错误:
/node_modules/react-native/Libraries/Image/RCTImageCache.m:28:55: Enum values with underlying type ‘NSInteger’ should not be used as format arguments; add an explicit cast to ‘long’ instead

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针对上述问题，解决方案有3种：
1.Xcode降级到8.3;
2.将RN版本升级到最高；
3.手动fixed问题: %zd 替换为 %ld ; eventLag 替换为 (long)eventLag

return [NSString stringWithFormat:@”%@|%g|%g|%g|%ld|%@”,
imageTag, size.width, size.height, scale, (long)resizeMode, responseDate];

RCTLogWarn(@”Native TextInput(%@) is %ld events ahead of JS - try to make your JS faster.”, self.text, (long)eventLag);

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