iOS5及其以后提供了一个比较强大的工具UIAppearance,我们通过UIAppearance设置一些UI的全局效果,这样就可以很方便的实现UI的自定义效果又能最简单的实现统一界面风格,它提供如下两个方法。

+ (id)appearance

这个方法是统一全部改,比如你设置UINavBar的tintColor,你可以这样写:[[UINavigationBar appearance] setTintColor:myColor];

 

+ (id)appearanceWhenContainedIn:(Class <>)ContainerClass,...

这个方法可设置某个类的改变:例如:设置UIBarButtonItem 在UINavigationBar、UIPopoverController、UITabbar中的效果。就可以这样写

[[UIBarButtonItem appearanceWhenContainedIn:[UINavigationBar class], [UIPopoverController class],[UITabbar class] nil] setTintColor:myPopoverNavBarColor];

 

请注意*使用appearance设置UI效果最好采用全局的设置,在所有界面初始化前开始设置,否则可能失效。

 

具体UI外观修改如下:

1.修改导航栏背景

代码如下:

    UINavigationBar * appearance = [UINavigationBar appearance];

    UIImage *navBackgroundImg =[UIImage imageNamed:@"navBg.png”];

    [appearance setBackgroundImage:navBackgroundImg forBarMetrics:UIBarMetricsDefault];

 

2.标签栏(UITabbar)

代码如下:

    UITabBar *appearance = [UITabBar appearance];

    //设置背景图片

    [appearance setBackgroundImage:[UIImage imageNamed:@"tabbar_bg.png"]];

    //门置选择item的背景图片

    UIImage * selectionIndicatorImage =[[UIImageimageNamed:@"tabbar_slider"]resizableImageWithCapInsets:UIEdgeInsetsMake(4, 0, 0, 0)] ;

    [appearance setSelectionIndicatorImage:selectionIndicatorImage];

 

3.分段控件(UISegmentControl)

代码如下:

    UISegmentedControl *appearance = [UISegmentedControl appearance];

    //Segmenteg正常背景

    [appearance setBackgroundImage:[UIImage imageNamed:@"Segmente.png"]

                          forState:UIControlStateNormal

                        barMetrics:UIBarMetricsDefault];

    //Segmente选中背景

    [appearance setBackgroundImage:[UIImage imageNamed:@"Segmente_a.png"]

                          forState:UIControlStateSelected

                        barMetrics:UIBarMetricsDefault];

    //Segmente左右都未选中时的分割线

    //BarMetrics表示navigation bar的状态,UIBarMetricsDefault 表示portrait状态(44pixel height),UIBarMetricsLandscapePhone 表示landscape状态(32pixel height)

    

    [appearance setDividerImage:[UIImage imageNamed:@"Segmente_line.png"]

            forLeftSegmentState:UIControlStateNormal

              rightSegmentState:UIControlStateNormal

                     barMetrics:UIBarMetricsDefault];

    

    [appearance setDividerImage:[UIImage imageNamed:@"Segmente_line.png"]

            forLeftSegmentState:UIControlStateSelected

              rightSegmentState:UIControlStateNormal

                     barMetrics:UIBarMetricsDefault];

    

    [appearance setDividerImage:[UIImage imageNamed:@"Segmente_line.png"]

            forLeftSegmentState:UIControlStateNormal

              rightSegmentState:UIControlStateSelected

                     barMetrics:UIBarMetricsDefault];

    

    //字体

    NSDictionary *textAttributes1 = @{UITextAttributeFont: [UIFont systemFontOfSize:18],

                                     UITextAttributeTextColor: [UIColor blueColor],

                                     UITextAttributeTextShadowColor: [UIColor whiteColor],

                                     UITextAttributeTextShadowOffset: [NSValuevalueWithCGSize:CGSizeMake(1, 1)]};

    

    [appearance setTitleTextAttributes:textAttributes1 forState:1];

    

    NSDictionary *textAttributes2 = @{UITextAttributeFont: [UIFont systemFontOfSize:18],

                                     UITextAttributeTextColor: [UIColor whiteColor],

                                     UITextAttributeTextShadowColor: [UIColor blackColor],

                                     UITextAttributeTextShadowOffset: [NSValuevalueWithCGSize:CGSizeMake(1, 1)]};

    

    [appearance setTitleTextAttributes:textAttributes2 forState:0];

 

 

4.UIBarbutton

注意:UIBarbutton有leftBarButton,rightBarButton和backBarButton,其中backBarButton由于带有箭头,需要单独设置。

barButton背景设置是ios6.0及以后的,而backbutton是ios5.0及以后的,这里要注意!

代码如下:

    //修改导航条上的UIBarButtonItem

    UIBarButtonItem *appearance = [UIBarButtonItem appearanceWhenContainedIn:[UINavigationBarclass], nil];

 

    //设置导航栏的字体包括backBarButton和leftBarButton,rightBarButton的字体

    NSDictionary *textAttributes = @{UITextAttributeFont: [UIFont systemFontOfSize:18],

                                     UITextAttributeTextColor: [UIColorblueColor],

                                     UITextAttributeTextShadowColor: [UIColorwhiteColor],

                                     UITextAttributeTextShadowOffset: [NSValuevalueWithCGSize:CGSizeMake(1, 1)]};

    

    [appearance setTitleTextAttributes:textAttributes forState:1];//forState为0时为下正常状态,为1时为点击状态。

 

    

    //修改leftBarButton,rightBarButton背景效果

    [appearance setBackgroundImage:[UIImage imageNamed:@"navBarButton.png"]

                          forState:UIControlStateNormal

                             style:UIBarButtonItemStyleBordered

                        barMetrics:UIBarMetricsDefault];

    

    [appearance setBackgroundImage:[UIImage imageNamed:@"navBarButton_a.png"]

                          forState:UIControlStateHighlighted

                             style:UIBarButtonItemStyleBordered

                        barMetrics:UIBarMetricsDefault];

 

    

    //backBarButton需要单独设置背景效果。只能在ios6.0以后才能用

    [appearance setBackButtonBackgroundImage:[UIImage imageNamed:@"nav_bg.png"]

                                    forState:0

                                  barMetrics:UIBarMetricsDefault];

    

    [appearance setBackButtonBackgroundImage:[UIImage imageNamed:@"work.png"]

                                    forState:1

                                  barMetrics:UIBarMetricsDefault];

    

    [appearance setBackButtonTitlePositionAdjustment:UIOffsetMake(2, -1)

                                       forBarMetrics:UIBarMetricsDefault];

 

5.工具栏(UIToolbar)

 

   UIToolbar *appearance = [UIToolbar appearance];

    //样式和背景二选一即可,看需求了

    //样式(黑色半透明,不透明等)设置

    [appearance setBarStyle:UIBarStyleBlackTranslucent];

    //背景设置

    [appearance setBackgroundImage:[UIImage imageNamed:@"toolbarBg.png"]

                forToolbarPosition:UIToolbarPositionAny

                        barMetrics:UIBarMetricsDefault];

posted on 2016-01-19 15:46  丑蛋蛋  阅读(317)  评论(0编辑  收藏  举报