UITabBar初体验
#import "ViewControllerTwo.h"
@interface ViewControllerTwo ()
@end
@implementation ViewControllerTwo
@synthesize tabBar;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
self.view.backgroundColor = [UIColor greenColor];
tabBar = [[UITabBar alloc] init];
tabBar.delegate = self;
tabBar.frame = CGRectMake(0, 50, 320, 50);
tabBar.tintColor = [UIColor colorWithRed:193.0f/255.0f green:193.0f/255.0f blue:193.0f/255.0f alpha:1.0];
UITabBarItem * tb1 = [[UITabBarItem alloc] initWithTitle:@"1" image:nil tag:101];
[tb1 setTitlePositionAdjustment:UIOffsetMake(0.0, -4.0)];
UIOffset offset = [tb1 titlePositionAdjustment];
NSLog(@"%@",NSStringFromUIOffset(offset));
tb1.badgeValue = @"2";
UITabBarItem * tb2 = [[UITabBarItem alloc] initWithTitle:@"2" image:nil tag:102];
NSArray * array = [NSArray arrayWithObjects:tb1,tb2, nil];
tabBar.items = array;
[tabBar setSelectedItem:[tabBar.items objectAtIndex:0]];
[self addBtn];
[self.view addSubview:tabBar];
}
#pragma mark -
- (void)tabBar:(UITabBar *)tabBar didSelectItem:(UITabBarItem *)item
{
if(item.tag == 101)
{
[self addBtn];
}
else
{
[self addLabel];
}
}
- (void)addBtn
{
for (UIView * v in self.view.subviews)
{
if (v.tag == 151)
{
[v removeFromSuperview];
}
}
UIButton * btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
btn.frame = CGRectMake(150, 200, 50, 50);
btn.tag = 150;
[self.view addSubview:btn];
}
-(void)addLabel
{
for (UIView * v in self.view.subviews)
{
if(v.tag == 150)
{
[v removeFromSuperview];
}
}
UILabel * label = [[UILabel alloc] initWithFrame:CGRectMake(100, 200, 50, 50)];
label.tag = 151;
label.backgroundColor = [UIColor blueColor];
[self.view addSubview:label];
[label release];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}