xcode11：Could not instantiate cl

xcode11加载xib的UITextView报错。
解决方案一：UITextView控件用代码重新手写。
解决方案二：新建UITextViewWorkaround一个继承NSObject的类。如下：

@interface UITextViewWorkaround : NSObject

+ (void)executeWorkaround;
@end

@implementation UITextViewWorkaround

+ (void)executeWorkaround {
  if (@available(iOS 13.2, *)) {
    
  }else {
    const char *className = "_UITextLayoutView";
    Class class1 = objc_getClass(className);
    if (nil == class1) {
      class1 = objc_allocateClassPair([UIView class], className, 0);
      objc_registerClassPair(class1);
#if DEBUG
      printf("added %s dynamically\n", className);
#endif
    }
  }
}
@end