RN项目iOS端红色屏幕报错Unknown argument t

报错信息：

Unknown argument type 'attribute' in method -[RCTAppState getCurrentAppState:error:]. Extend RCTConvert to support this type

解决办法: 全局搜索RCTParseUnused这个词，然后修改这个函数的代码:

static BOOL RCTParseUnused(const char **input){

return RCTReadString(input, "__unused") ||
       RCTReadString(input, "__attribute__((__unused__))") ||
       RCTReadString(input, "__attribute__((unused))");
}

如果上边不行，再使用下面：

static BOOL RCTParseUnused(const char **input){

return RCTReadString(input, "__unused") || 
       RCTReadString(input, "attribute((unused))") ||
       RCTReadString(input, "attribute((unused))"); 
}