从iOS导航后退栏按钮中删除文本。

Question

我想删除左侧导航栏中的文字，但我到处都看不到任何内容。我希望按钮只显示一个图像，它会这样做，但文本覆盖它。如何删除文本？

Answer 1

UIImage* image = [UIImage imageNamed:@"yourImage"];
CGRect frameimg = CGRectMake(0, 0, image.size.width, image.size.height);
UIButton *yourButton = [[UIButton alloc] initWithFrame:frameimg];
[yourButton setBackgroundImage:image forState:UIControlStateNormal];
UIBarButtonItem *button =[[UIBarButtonItem alloc] initWithCustomView:yourButton];
self.navigationItem.rightBarButtonItem=button;

Answer 2

只需设置

self.navigationItem.title = @"";

在上一个viewcontroller中