以UILineBreakModeTailTruncation 、UITextAlignmentCenter 举例 修改如下:
#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 60000 NSLineBreakMode lbm = NSLineBreakByTruncatingTail; #else UILineBreakMode lbm = UILineBreakModeTailTruncation; #endif #if __IPHONE_OS_VERSION_MAX_ALLOWED >= 60000 NSTextAlignment ta = NSTextAlignmentCenter; #else UITextAlignment ta = UITextAlignmentCenter; #endif