1.自定义导航栏文字
UILabel *titleLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0 , 40, 44)];
titleLabel.backgroundColor = [UIColor clearColor]; //设置Label背景透明
titleLabel.font = [UIFont boldSystemFontOfSize:20]; //设置文本字体与大小
titleLabel.textColor = [UIColor blackColor]; //设置文本颜色
titleLabel.textAlignment = NSTextAlignmentCenter;
titleLabel.text = @"逛市场"; //设置标题
self.navigationItem.titleView = titleLabel;
2.导航栏渐变效果
主要代码就一句,滑动更改导航栏透明度
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demo演示&&下载:
https://github.com/OwenJoe/navigationBar_ChangeAlpah.git
导航栏渐变效果
3.如果碰到App的导航栏样式基本上不改变,我们可以在APPDelegate.m里边定义此方法.
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#pragma mark -- 修改全局的导航栏样式
-(void)correctNavBarMethod{
//定义全局的导航栏
UINavigationBar *navBar = [UINavigationBar appearance];
//改变背景颜色
navBar.barTintColor = [UIColor colorWithRed:248.0/255 green:246.0/255 blue:248.0/255 alpha:1];
//修改导航栏标题颜色,文字大小,文字种类
[navBar setTitleTextAttributes:@{NSFontAttributeName:[UIFont boldSystemFontOfSize:20],NSForegroundColorAttributeName:[UIColor blackColor]}];
//修改文字
UIBarButtonItem *barItem = [UIBarButtonItem appearance];
[barItem setTitleTextAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:18],NSForegroundColorAttributeName:[UIColor darkGrayColor]} forState:UIControlStateNormal];
}
4.设置导航栏中间的title/title变button
导航栏navigationBar中间变button====>跟方法一很类似
self.navigationItem.titleView =button;
UIButton * button =[UIButton buttonWithType:UIButtonTypeCustom];
button.frame=CGRectMake(20, 20, 100, 40);
[button setTitle:@"1/3" forState:UIControlStateNormal];
[button addTarget:self action:@selector(showAllQuestions:) forControlEvents:UIControlEventTouchUpInside];
self.navigationItem.titleView =button;
