UINavigationController使用总结

1.自定义UINavigationController页面切换的动画

想自定义UINavigationController页面切换的动画，达到presentViewController和dismissViewController的效果，但是又能保存在UINavigationController的viewControllers里以方便各种POP操作，可以使用如下方式：

PUSH：

CATransition *animation = [CATransition animation];
[animation setDuration:0.3];
[animation setType: kCATransitionMoveIn];
[animation setSubtype: kCATransitionFromTop];
[animation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionDefault]];
 
UIStoryboard *storyboard = self.storyboard;
UnknownDeviceListViewController *unknownViewController = [storyboard instantiateViewControllerWithIdentifier:@"bluetoothlist"];
[self.navigationController pushViewController:unknownViewController animated:NO];
 
[self.navigationController.view.layer addAnimation:animation forKey:nil]; 

POP：

    CATransition *animation = [CATransition animation];
    [animation setDuration:0.3];
    [animation setType: kCATransitionMoveIn];
    [animation setSubtype: kCATransitionFromBottom];
    [animation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionDefault]];
    
    [self.navigationController.view.layer addAnimation:animation forKey:nil];
    [self.navigationController popViewControllerAnimated:NO];

注意，POP的时候，必须先addAnimation，然后在popViewController。否则如果animated为NO，则没有动画效果；如果animated为YES，则自带的POP动画和我们自定义的POP动画会一起生效。

2.几种POP方法：

    [self.navigationController popViewControllerAnimated:YES];//上一层
    [self.navigationController popToRootViewControllerAnimated:YES];//最顶层
    [self.navigationController popToViewController:[self.navigationController.viewControllers objectAtIndex:1] animated:YES];//指定某一层

 3.常用属性：

@property(nonatomic,readonly,retain) UIViewController *topViewController; // The top view controller on the stack.
@property(nonatomic,readonly,retain) UIViewController *visibleViewController; // Return modal view controller if it exists. Otherwise the top view controller.
@property(nonatomic,copy) NSArray *viewControllers; // The current view controller stack.

 

4.自定义返回按钮

#import "LeftArrowButton.h"

@implementation LeftArrowButton

- (id)initWithFrame:(CGRect)frame{
    self = [super initWithFrame:frame];
    if (self) {
        UIImageView *imageView = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"leftarrow.png"]];
        imageView.frame = CGRectMake(-8, 5, 12.5, 20.5);
        imageView.tintColor = [UIColor whiteColor];
        
        UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(11, 0, 40, 30)];
        label.text = @"返回";
        label.textColor = [UIColor whiteColor];
        [self addSubview:imageView];
        [self addSubview:label];
    }
    return self;
}

- (void)dealloc{
    [super dealloc];
}

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
    self.alpha = 0.2;
}
- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event{
    
}

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{
    self.alpha = 1;
    
    UITouch *touch = [touches anyObject];
    CGPoint point = [touch locationInView:self];
    if (point.x > self.frame.size.width || point.y >self.frame.size.height)
        return;
    
    [self.delegate didReturn];
}

@end

白色箭头：  黑色箭头：

 

 

X.链接

1.iOS 7 教程：定制iOS 7中的导航栏和状态栏

• iOS 7中默认的导航栏
• 设置导航栏的背景颜色
• 在导航栏中使用背景图片
• 定制返回按钮的颜色
• 修改导航栏标题的字体
• 修改导航栏标题为图片
• 添加多个按钮
• 修改状态栏的风格
• 隐藏状态栏
• 总结