ios - 设置调试或发布 | react native - iOS

Question

如何在 React Native for iOS (Xcode) 中设置 Debug 或 Release 模式，就像我们过去在 Build Setting->LLVM Preprocessor over Native code 中所做的那样？有什么办法或者我需要在 JS 代码中指定吗？如果没有办法，那么我们应该如何在 React Native JS Code 中访问 Xcode 设置的属性呢？

Answer 1

设置调试或 Release模式:

For iOS open your project in Xcode and select Product → Scheme → Edit Scheme... (or press ⌘ + <). Next, select Run from the menu on the left and change the Build Configuration to Release.
For Android, by default, developer menu will be disabled in release builds done by gradle (e.g with gradle assembleRelease task). Although this behavior can be customized by passing proper value to ReactInstanceManager#setUseDeveloperSupport.

来源:https://facebook.github.io/react-native/docs/debugging.html

在调试或 Release模式下访问信息:

if (__DEV__) {
console.log('I am in debug');
}

来源:How can I determine if my React Native app is a debug or release build from JavaScript code?