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有谁知道如何在 iPad 上的音乐和时钟应用程序中像 Apple 一样设置 uitabbar 的样式？在此处输入图像描述

我一直在网上搜索，但在那里找不到太多。

谢谢

编辑：

换个说法，我试图了解如何进行设置。我一直在尝试使用 uitabbarcontroller，但我不确定这是否是 uitabbaritems 的操纵样式，或者它是否使用分段控件。这似乎是苹果新应用程序中的常见视图，但我不确定需要多少定制才能达到效果。如果我想以与 Apple 的音乐和时钟应用程序类似的方式选择两个独特的视图，我会采用如下方法：

  • UIViewController（根）
    • UI工具栏
      • 分段控制
        • 按钮 1
          • 加载 ViewController1
        • 按钮 2
          • 加载 ViewController2
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1 回答 1

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那是一个UISegmentedControl. 您可以使用以下方法设置其外观样式：

/* Default tintColor is nil. Only used if style is UISegmentedControlStyleBar or UISegmentedControlStyleBezeled
 */
@property(nonatomic,retain) UIColor *tintColor UI_APPEARANCE_SELECTOR;

/* If backgroundImage is an image returned from -[UIImage resizableImageWithCapInsets:] the cap widths will be calculated from that information, otherwise, the cap width will be calculated by subtracting one from the image's width then dividing by 2. The cap widths will also be used as the margins for text placement. To adjust the margin use the margin adjustment methods.

 In general, you should specify a value for the normal state to be used by other states which don't have a custom value set.

 Similarly, when a property is dependent on the bar metrics (on the iPhone in landscape orientation, bars have a different height from standard), be sure to specify a value for UIBarMetricsDefault.
 In the case of the segmented control, appearance properties for UIBarMetricsLandscapePhone are only respected for segmented controls in the smaller navigation and toolbars that are used in landscape orientation on the iPhone.
 */
- (void)setBackgroundImage:(UIImage *)backgroundImage forState:(UIControlState)state barMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR; 
- (UIImage *)backgroundImageForState:(UIControlState)state barMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;

/* To customize the segmented control appearance you will need to provide divider images to go between two unselected segments (leftSegmentState:UIControlStateNormal rightSegmentState:UIControlStateNormal), selected on the left and unselected on the right (leftSegmentState:UIControlStateSelected rightSegmentState:UIControlStateNormal), and unselected on the left and selected on the right (leftSegmentState:UIControlStateNormal rightSegmentState:UIControlStateSelected).
 */
- (void)setDividerImage:(UIImage *)dividerImage forLeftSegmentState:(UIControlState)leftState rightSegmentState:(UIControlState)rightState barMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
- (UIImage *)dividerImageForLeftSegmentState:(UIControlState)leftState rightSegmentState:(UIControlState)rightState barMetrics:(UIBarMetrics)barMetrics  NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;

/* You may specify the font, text color, text shadow color, and text shadow offset for the title in the text attributes dictionary, using the keys found in UIStringDrawing.h.
 */
- (void)setTitleTextAttributes:(NSDictionary *)attributes forState:(UIControlState)state NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
- (NSDictionary *)titleTextAttributesForState:(UIControlState)state NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;

/* For adjusting the position of a title or image within the given segment of a segmented control.
 */
- (void)setContentPositionAdjustment:(UIOffset)adjustment forSegmentType:(UISegmentedControlSegment)leftCenterRightOrAlone barMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR; 
- (UIOffset)contentPositionAdjustmentForSegmentType:(UISegmentedControlSegment)leftCenterRightOrAlone barMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;

此示例为不同的选择状态设置背景和分隔线图像（使用外观代理更改所有分段控件的外观）：

UIImage *segmentSelected = 
    [[UIImage imageNamed:@"segcontrol_sel.png"] 
        resizableImageWithCapInsets:UIEdgeInsetsMake(0, 15, 0, 15)];
UIImage *segmentUnselected = 
    [[UIImage imageNamed:@"segcontrol_uns.png"] 
        resizableImageWithCapInsets:UIEdgeInsetsMake(0, 15, 0, 15)];
UIImage *segmentSelectedUnselected = 
    [UIImage imageNamed:@"segcontrol_sel-uns.png"];
UIImage *segUnselectedSelected = 
    [UIImage imageNamed:@"segcontrol_uns-sel.png"];
UIImage *segmentUnselectedUnselected = 
    [UIImage imageNamed:@"segcontrol_uns-uns.png"];

[[UISegmentedControl appearance] setBackgroundImage:segmentUnselected 
    forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];
[[UISegmentedControl appearance] setBackgroundImage:segmentSelected 
    forState:UIControlStateSelected barMetrics:UIBarMetricsDefault];

[[UISegmentedControl appearance] setDividerImage:segmentUnselectedUnselected 
    forLeftSegmentState:UIControlStateNormal 
    rightSegmentState:UIControlStateNormal 
    barMetrics:UIBarMetricsDefault];
[[UISegmentedControl appearance] setDividerImage:segmentSelectedUnselected 
    forLeftSegmentState:UIControlStateSelected 
    rightSegmentState:UIControlStateNormal 
    barMetrics:UIBarMetricsDefault];
[[UISegmentedControl appearance] 
    setDividerImage:segUnselectedSelected 
    forLeftSegmentState:UIControlStateNormal 
    rightSegmentState:UIControlStateSelected 
    barMetrics:UIBarMetricsDefault];
于 2012-09-23T12:17:32.750 回答