UITabBarItem如何更改高度

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我目前有个UITabBar，改了它的高度。但是我切换页签后，这个UITabBar样式又变掉了。我感觉是UITabBarItem的高度把整个页签高度撑开了。

不知道如何修改UITabBarItem，最好是能去掉文字占用的空间，因为我只要图片，不要文字的。能不能把文字移除。

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major李小木

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发表于: 2014-04-11 09:58

发自: Web Page

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如果不是系统样式的tabbar，建议你还是自定义一个tabbar

给你一个自定义tabbar的demo，希望可以帮到你

#import "MainTabBarController.h"

#import "HomePageViewController.h"

#import "ScanningViewController.h"

#import "NearbyViewController.h"

#import "RemindViewController.h"

#import "DeviceManager.h"

@interface MainTabBarController ()

{

UIView * _tabBarView;

}

@end

@implementation MainTabBarController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil

{

self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];

if (self) {

}

return self;

}

- (void)viewDidLoad

{

[super viewDidLoad];

[self creatCustomTabBarView];

[self creatControllers];

}

#define NormalImages [NSArray arrayWithObjects:@"底部首页按钮",@"底部扫描按钮",@"底部附近按钮",@"底部提醒按钮", nil]

#define SelectedImages [NSArray arrayWithObjects:@"底部首页按钮高亮",@"底部扫描按钮高亮",@"底部附近按钮高亮",@"底部提醒按钮高亮", nil]

-(void)creatCustomTabBarView{

self.tabBar.hidden = YES;

_tabBarView = [[UIView alloc] initWithFrame:CGRectMake(0, [DeviceManager currentDeviceScreenHeight] - 44, 320, 44)];

for (int i = 0; i< 4; i++) {

UIButton * button = [UIButton buttonWithType:UIButtonTypeCustom];

if (i == 0) {

[button setBackgroundImage:[UIImage imageNamed:[SelectedImages objectAtIndex:i]] forState:UIControlStateNormal];

}else{

[button setBackgroundImage:[UIImage imageNamed:[NormalImages objectAtIndex:i]] forState:UIControlStateNormal];

}

[button setFrame:CGRectMake(0+80*i, 0, 80, 44)];

button.tag = 100 + i;

[button addTarget:self action:@selector(clickedButton:) forControlEvents:UIControlEventTouchDown];

[_tabBarView addSubview:button];

}

[self.view addSubview:_tabBarView];

}

-(void)creatControllers{

HomePageViewController * hpVC = [[HomePageViewController alloc] init];

ScanningViewController * sVC = [[ScanningViewController alloc] init];

NearbyViewController * nVC = [[NearbyViewController alloc] init];

RemindViewController * rVC = [[RemindViewController alloc] init];

NSArray * viewControllers = [NSArray arrayWithObjects:hpVC,sVC,nVC,rVC, nil];

NSMutableArray * controllers = [[NSMutableArray alloc] init];

for (int i = 0; i< 4; i++) {

UINavigationController * nav = [[UINavigationController alloc] initWithRootViewController:[viewControllers objectAtIndex:i]];

[controllers addObject:nav];

}

self.viewControllers = controllers;

}

-(void)clickedButton:(UIButton *)button{

for (int i = 0; i< 4; i++) {

UIButton * btn = (UIButton *)[_tabBarView viewWithTag:(100 + i)];

if (button.tag%100 == i) {

[btn setBackgroundImage:[UIImage imageNamed:[SelectedImages objectAtIndex:i]] forState:UIControlStateNormal];

self.selectedIndex = i;

}else{

[btn setBackgroundImage:[UIImage imageNamed:[NormalImages objectAtIndex:i]] forState:UIControlStateNormal];

}

}

}

- (void)didReceiveMemoryWarning

{

[super didReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

@end