添加返回导航按钮backBarButtonItem 私人日志_backbarbuttonitem 系统返回还在-优快云博客

本文介绍两种在iOS应用中实现返回按钮的方法：一是使用系统自带的返回按钮，二是自定义返回按钮样式及行为，并提供了具体的代码实现。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

1.用系统自带的返回按钮

UIBarButtonItem *leftBarButtonItem = [[UIBarButtonItem alloc]
                                          initWithTitle:@"返回"
                                          style:UIBarButtonSystemItemCancel
                                          target:self
                                          action:@selector(doClickBackAction:)];
    self.navigationItem.backBarButtonItem = leftBarButtonItem;

2.自己定义返回按钮
UIImage* backImage = [UIImage imageNamed:@"btn_back.png"];
    CGRect backframe = CGRectMake(0,0,54,30);
    UIButton* backButton= [[UIButton alloc] initWithFrame:backframe];
    [backButton setBackgroundImage:backImage forState:UIControlStateNormal];
    [backButton setTitle:@"直播" forState:UIControlStateNormal];
    backButton.titleLabel.font=[UIFont systemFontOfSize:13];
    [backButton addTarget:self action:@selector(doClickBackAction:) forControlEvents:UIControlEventTouchUpInside];

    UIBarButtonItem* leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:backButton];
    UIBarButtonItem* leftBarButtonItem = [[UIBarButtonItem alloc] init];
    self.navigationItem.leftBarButtonItem = leftBarButtonItem;
    [leftBarButtonItem release];
    [backButton release];