ios - 使用obj-c的UINavigationController居中按钮

Question

我正在尝试在导航栏标题中添加居中按钮，但对如何操作却感到困惑

- (void)viewDidLoad {
    [super viewDidLoad];
UIImage *meImage = [[UIImage alloc] initWithContentsOfFile:[NSString stringWithFormat:@"%@/me.png", kSelfBundlePath]];
UIBarButtonItem *meButton = [[UIBarButtonItem alloc] initWithImage:meImage style:UIBarButtonItemStylePlain target:self action:@selector(twitterButton)];


[self.titleView //i read this can be used to like set it but i havent been able to figure it out

帮助将不胜感激，很新

Answer 1

检查此代码

UIView *container = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 200, 44)];
    container.backgroundColor = [UIColor clearColor];
    UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
    [btn setFrame:CGRectMake(0, 0, 44, 44)];
    [btn setBackgroundImage:[UIImage imageNamed:@"button0.png"] forState:UIControlStateNormal];
    [btn addTarget:self action:@selector(btnAction:) forControlEvents:UIControlEventTouchUpInside];
    [btn setShowsTouchWhenHighlighted:YES];
    [buttonContainer addSubview:button0];

    //add your spacer images and button1 and button2...

    self.navigationItem.titleView = container;