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UI_APPEARANCE_SELECTOR 延伸

iOS后属性带UI_APPEARANCE_SELECTOR 可以统一设置全局作用

例如:

1>开关控件

@property(nullable, nonatomic, strong) UIColor *onTintColor NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR

可以统一设置开关的onTintColor样式.不过开关控件的颜色属性比较特殊

1.只在添加时作用一次.

2.添加结束后.

3.以后设置便不再改变.

4.也可以移出开关的父控件.而把开关从新加入到window上.

在iOS属性后有UI_APPEARANCE_SELECTOR标志都可以一次性统一设置.这种情况还有很多.比如说统一设置UITabbarItem的文字颜色 方法如下:

- (void)setTitleTextAttributes:(nullable NSDictionary*)attributes forState:(UIControlState)state NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;

 

 

  appearance是apple在iOS5.0上加的一个协议,它让程序员可以很轻松地改变某控件的全局样式(背景)

  @selector(appearance)

  支持UIAppearance协议的类可以访问appearance selector ,它为receiver返回appearance proxy,我么可以给proxy发一些消息,诸如setTintColor:等

但是它并不是支持所有的UI类。下面列出它支持的类

  1.UIActivitiIndicatorView

  2.UIBarButtonItem

  3.UIBarItem

  4.UINavgationBar

  5.UIPopoverControll

  6.UIProgressView

  7.UISearchBar

  8.UISegmentControll 

  9.UISlider

  10.UISwitch

  11.UITabBar

  12.UITabBarItem

  13.UIToolBar

  14.UIView

  15.UIViewController

例如:

 [[UINavigationBarappearance] setTintColor:[UIColorblackColor]];

 [[UISearchBarappearance] setTintColor:[UIColorblackColor]];

注意:

  初学者肯定会任意调用方法,大部分方法时无效的,如果调用时会抛出unknown selector 异常

  那么如何查看你调用的方法时有效的呢,我们可以在此类的头文件中查看包含“UI_APPEARANCE_SELECTOR”常量的方法。

例如UIToolBar

它支持下列方法

@property(nonatomic,retain) UIColor   *tintColor  UI_APPEARANCE_SELECTOR;

- (void)setBackgroundImage:(UIImage *)backgroundImage forToolbarPosition:(UIToolbarPosition)topOrBottom barMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;

- (UIImage *)backgroundImageForToolbarPosition:(UIToolbarPosition)topOrBottom barMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;

- (void)setShadowImage:(UIImage *)shadowImage forToolbarPosition:(UIToolbarPosition)topOrBottom NS_AVAILABLE_IOS(6_0) UI_APPEARANCE_SELECTOR;

- (UIImage *)shadowImageForToolbarPosition:(UIToolbarPosition)topOrBottom NS_AVAILABLE_IOS(6_0) UI_APPEARANCE_SELECTOR;

 

了解更多请访问:http://developer.apple.com/library/ios/#documentation/uikit/reference/UIAppearance_Protocol/Reference/Reference.html。

 

 

补上实例代码:

<style>p.p1 { margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Menlo } p.p2 { margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Menlo; color: #c35900 } p.p3 { margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Menlo; min-height: 16.0px } span.s1 { } span.s2 { color: #35568a } span.s3 { color: #000000 } span.s4 { color: #587ea8 } span.s5 { color: #c35900 }</style>

+ (void) initialize

{

    if (self == [DACircularProgressView class]) {

        DACircularProgressView *circularProgressViewAppearance = [DACircularProgressView appearance];

        [circularProgressViewAppearance setTrackTintColor:[[UIColor whiteColor] colorWithAlphaComponent:0.3f]];

        [circularProgressViewAppearance setProgressTintColor:[UIColor whiteColor]];

        [circularProgressViewAppearance setInnerTintColor:nil];

        [circularProgressViewAppearance setBackgroundColor:[UIColor clearColor]];

        [circularProgressViewAppearance setThicknessRatio:0.3f];

        [circularProgressViewAppearance setRoundedCorners:NO];

        [circularProgressViewAppearance setClockwiseProgress:YES];

        

        [circularProgressViewAppearance setIndeterminateDuration:2.0f];

        [circularProgressViewAppearance setIndeterminate:NO];

    }

}

 

 

更多:

1.http://blog.csdn.net/lxl_815520/article/details/51360878

2.https://southpeak.github.io/2015/07/20/cocoa-uikit-uiapearance/

3.https://www.cnblogs.com/Rinpe/p/5351639.html

4.https://www.cnblogs.com/salam/archive/2013/01/30/appearance.html

 

UI_APPEARANCE_SELECTOR 延伸