将图像添加到导航栏

Question

将项目添加到收藏夹时。我想表明它已成功添加到用户，方法是将星形图像淡入导航栏中而不是右侧栏按钮。我该怎么做？

任何帮助将不胜感激！谢谢

Answer 1

您可以使用自定义按钮自定义右侧栏按钮项目。

//custom back button
    button =  [UIButton buttonWithType:UIButtonTypeCustom];
    [button setBackgroundImage:[UIImage imageNamed:@"back.png"] forState:UIControlStateNormal];
    [button addTarget:self action:@selector(backButtonClicked) forControlEvents:UIControlEventTouchUpInside];
    [button setFrame:CGRectMake(-2, 0, 52, 30)];

    UIBarButtonItem *btnItem = [[UIBarButtonItem alloc] initWithCustomView:button];
    self.navigationItem.rightBarButtonItem = btnItem;
    [btnItem release];