默认只有两个选项可以点击
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如果是IB设置的话，可以设置其属性viewControls（名字忘了）
Xcode的或tabBarController.viewControllers=controls;
controls为视图控制器数组
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- C/C++ code
NSMutableArray* tabControllers = [[NSMutableArray alloc] initWithObjects: [viewControllers1 objectAtIndex:0], [viewControllers2 objectAtIndex:1], [viewControllers3 objectAtIndex:2], [viewControllers4 objectAtIndex:3],nil]; [tabBarController setViewControllers:tabControllers]; [tabControllers release];