自定义UITableView的Header

正确写法

#import "TemperatureHeader.h"

@implementation TemperatureHeader

- ( instancetype )initWithReuseIdentifier:( NSString *)reuseIdentifier{
   
    self = [ super initWithReuseIdentifier :reuseIdentifier];
   
    if ( self ) {
       
    }
   
    return self ;
}

@end

- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {
    TemperatureHeader *sectionHeadView = [tableView dequeueReusableHeaderFooterViewWithIdentifier:TemperatureHeaderID];
    if (!sectionHeadView) {
        sectionHeadView = [[TemperatureHeader alloc]initWithReuseIdentifier:TemperatureHeaderID];
    }
      return sectionHeadView;
}