React-Native 'RCTRootView.h' file not found AppDelegate.m

1.有时在打开React-Native的项目时,会报错:’RCTRootView.h’ file not found AppDelegate.m 文件找不到;

2.cd 到我们该项目的根目录下;

//执行$npm install

3.执行完后,编译项目,看到还会提示错误: 在RCTSRWebSocket.m报错Ignoring return value of function declared with warn_unused_result attribute

两处的报错代码:SecRandomCopyBytes(kSecRandomDefault, sizeof(uint32_t), (uint8_t *)mask_key);

//解决办法分别在两出代码前面加上void(void)SecRandomCopyBytes(kSecRandomDefault, sizeof(uint32_t), (uint8_t *)mask_key);

再次运行,即可运行成功.