我从三个部分添加了一个名为"*.a"的库,并在我的XCode项目中添加了它的头文件.在我编译项目时,有许多"Apple Mach-O链接器错误".这里的错误信息:
"std::ios_base::failure::~failure()", referenced from:
"std::_List_node_base::unhook()", referenced from:
"std::string::find(char const*, unsigned long, unsigned long) const", referenced from:
"std::ios_base::failure::failure(std::string const&)", referenced from:
"std::_List_node_base::hook(std::_List_node_base*)", referenced from:
"std::invalid_argument::invalid_argument(std::string const&)", referenced from:
"std::runtime_error::runtime_error(std::string const&)", referenced from:
"std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(unsigned long, char, std::allocator<char> const&)", referenced from:
"std::string::assign(char const*, unsigned long)", referenced from:
"std::istream::operator>>(int&)", referenced from:
"vtable for std::basic_ostringstream<char, std::char_traits<char>, std::allocator<char> >", referenced from:
"vtable for std::basic_istringstream<char, std::char_traits<char>, std::allocator<char> >", referenced from:
"std::basic_ostringstream<char, std::char_traits<char>, std::allocator<char> >::basic_ostringstream(std::_Ios_Openmode)", referenced from:
"vtable for std::basic_stringbuf<char, std::char_traits<char>, std::allocator<char> >", referenced …我在LaunchImage资产中添加了不同大小的图像.虽然我使用此代码
UIImage *launchImage = [UIImage imageNamed:@"LaunchImage"]
它返回了大小错误的launchImage,正好返回@ 2x png.当我使用iphone6 plus时,期待的图像是@ 3x png.有关获得正确图像的想法吗？