IOS 自定义代理协议Delegate

QuestionViewCell.h文件代码，定义代理协议

@protocol QuestionViewCellDelegate 

- (void)cellIsOpenDidChangeAtIndexPath:(NSIndexPath *)indexPath;

@end

@interface QuestionViewCell : UITableViewCell

@property (nonatomic, weak) id delegate;


@end

QuestionViewCell.m文件调用代理代码

#import "QuestionViewCell.h"

@interface QuestionViewCell ()


@end

@implementation QuestionViewCell

- (void)awakeFromNib {
    [super awakeFromNib];
    [FontSizeUtil setupWidgets:@[self.titleLabel, self.contentLabel]
         pingfangWithFontSizes:@[@12, @11]];
}

- (IBAction)openClickAction:(id)sender {
    if (self.delegate && [self.delegate respondsToSelector:@selector(cellIsOpenDidChangeAtIndexPath:)]) {
        [self.delegate cellIsOpenDidChangeAtIndexPath:self.indexPath];
    }
}

@end

UITableView设置代理对象

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {、
    QuestionViewCell *cell = [tableView dequeue:QuestionViewCell.class forIndexPath:indexPath];
    cell.indexPath = indexPath;
    cell.delegate = self;
    return cell;
}

ViewController.m 委托者实现代理协议

@interface TestViewController ()

@end

@implementation TestViewController


#pragma mark - QuestionViewCellDelegate

- (void)cellIsOpenDidChangeAtIndexPath:(NSIndexPath *)indexPath {
    //刷新Row行
    [self.tableView reloadRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
}

@end