reloadData 回调问题

import "TableView.h"

@interface TableView()
@property (nonatomic, copy) void (^reloadDataComBlock)();
@end

@implementation TableView

• (void)reloadDataWithCompletion:(void (^)())reloadDataComBlock {
  self.reloadDataComBlock = reloadDataComBlock;
  [super reloadData];
  }
• (void)layoutSubviews {
  [super layoutSubviews];
  if (self.reloadDataCompletionBlock) {
  self.reloadDataCompletionBlock();
  self.reloadDataCompletionBlock = nil;
  }
  }
  @end

// 调用的时候
[self.tableView reloadDataComBlock:^{
NSLog(@"完成刷新");
}];