基本思路是这样的：
1. 创建一个RootViewController，它作为delegate加载的第一个controller
2. RootViewController的上半部分加载TabbarController，下半部分是自己画的控件，它用来控制Tabbar Controller加载哪个controller的
3. 把Tabbar controller的Tabbar给hide掉
4. RootViewController的下半部分是自己画的Tabbar，想怎么画就怎么画
大家看我的截图，上面是tabbar controller，它的tabbar已经给隐藏了。
下面是我自己画的自定义tabbar，还很粗糙，最左边的按钮已经可以控制tabbar的切换了。
如何隐藏tabbar控件：
首先要customize UITabBarController，其头文件定义为：
#import
<UIKit/UIKit.h>
@interface CustomTabbar : UITabBarController {
IBOutlet
UITabBar *tabBar1;
}
@property(nonatomic,
retain) UITabBar *tabBar1;
-(void) hideExistingTabBar;
@end
在实现文件中加入：
- (void)hideExistingTabBar
{
for(UIView *view
in self.view.subviews)
{
if([view
isKindOfClass:[UITabBar
class]])
{
view.hidden =
YES;
break;
}
}
}
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
[super
viewDidLoad];
[self
hideExistingTabBar];
让application delegate默认启动RootViewController
@interface MyTabbarAppDelegate : NSObject <UIApplicationDelegate, UITabBarControllerDelegate> {
UIWindow *window;
RootViewController *rootController;
}
@property (nonatomic,
retain) IBOutlet
UIWindow *window;
@property (nonatomic,
retain) IBOutlet
RootViewController *rootController;
实现文件代码：
@implementation MyTabbarAppDelegate
@synthesize window;
@synthesize rootController;
- (void)applicationDidFinishLaunching:(UIApplication *)application {
// Add the tab bar controller's current view as a subview of the window
[window
addSubview:rootController.view];
}
RootViewController如何加载tabbar controller:
@class
CustomTabbar;
@interface RootViewController : UIViewController {
CustomTabbar *tabbarController;
}
@property (nonatomic,
retain) IBOutlet
CustomTabbar *tabbarController;
- (IBAction) clikcOnFirst:(id)sender;
@end
实现代码：
- (void)viewDidLoad {
[tabbarController.view
setFrame:CGRectMake(0,
0, 300,
300)];
[self.view
insertSubview:tabbarController.view
atIndex:0];
[super
viewDidLoad];
}
RootViewController中的其他控件如何控制tabbar controller的切换：
- (IBAction) clikcOnFirst:(id)sender{
static
int i = 0;
tabbarController.selectedViewController = [ [tabbarController
viewControllers] objectAtIndex: i];
++i;
if ( i >
6 )
i =
0;
}
原文链接：http://www.devdiv.com/iPhone中如何自定义tabbar-weblog-1-1994.html
