自定义的tabBarController的几种方法

本文转载自：http://blog.sina.com.cn/s/blog_79c5bdc30100t88i.html

我自己实现的一种可以很方便的实现更换TabBarController图片的方法,代码如下：

#import <UIKit/UIKit.h>

@interface CustomTabBarViewController : UITabBarController {

UIImage *_tabBarBackgroundImage; //整个tabBar的背景

NSMutableArray *_unSelectedImageArray; //非选中效果的tabBarItem数组

NSMutableArray *_selectedImageArray; //选中效果的tabBarItem数组

NSMutableArray *_itemBgImageViewArray; //item背景UIIMageView数组

int _lastSelectedIndex; //上一次选中的tabBarItem的index

int _hiddenIndex;

}

@property (nonatomic, retain) UIImage *tabBarBackgroundImage;

@property (nonatomic, retain) NSMutableArray *unSelectedImageArray;

@property (nonatomic, retain) NSMutableArray *selectedImageArray;

@property (nonatomic, retain) NSMutableArray *itemBgImageViewArray;

@property (nonatomic, assign) int lastSelectedIndex;

@property (nonatomic, assign) int hiddenIndex;

- (id)initWithTabBarBackgroundImage:(UIImage *)barBackgroundImage

unSelectedImageArray:(NSMutableArray *)unImageArray

selectedImageArray:(NSMutableArray *)imageArray;

//隐藏某个tabBarItem的图片

-(void)hiddeItemImageView:(int)index;

//显示某个tabBarItem的图片

-(void)showItemImageView:(int)index;

@end

#import "CustomTabBarViewController.h"

#define TabBarBackgroundImageViewTag 11111

@implementation CustomTabBarViewController

@synthesize tabBarBackgroundImage = _tabBarBackgroundImage;

@synthesize unSelectedImageArray = _unSelectedImageArray;

@synthesize selectedImageArray = _selectedImageArray;

@synthesize itemBgImageViewArray = _itemBgImageViewArray;

@synthesize lastSelectedIndex = _lastSelectedIndex;

@synthesize hiddenIndex = _hiddenIndex;

- (void)dealloc

{

self.tabBarBackgroundImage = nil;

self.unSelectedImageArray = nil;

self.selectedImageArray = nil;

self.itemBgImageViewArray = nil;

[super dealloc];

}

- (void)didReceiveMemoryWarning

{

// Releases the view if it doesn't have a superview.

[super didReceiveMemoryWarning];

// Release any cached data, images, etc that aren't in use.

self.tabBarBackgroundImage = nil;

}

- (id)initWithTabBarBackgroundImage:(UIImage *)barBackgroundImage

unSelectedImageArray:(NSMutableArray *)unImageArray

selectedImageArray:(NSMutableArray *)imageArray {

self = [super init];

if (self) {

// self.tabBarBackgroundImage = barBackgroundImage;

// self.unSelectedImageArray = unImageArray;

// self.selectedImageArray = imageArray;

//

// self.itemBgImageViewArray = [NSMutableArray array];

// _lastSelectedIndex = 0;

// _hiddenIndex = -1;

}

return self;

}

- (id)init {

self = [super init];

if (self) {

// self.tabBarBackgroundImage = [UIImage imageNamed:@"menu_bg.png"];

//

// NSMutableArray *aunSelectedImageArray = [[NSMutableArray alloc] initWithObjects:[UIImage imageNamed:@"menu_paiyou.png"],

// [UIImage imageNamed:@"menu_chat.png"],

// [UIImage imageNamed:@"menu_map.png"],

// [UIImage imageNamed:@"menu_renwu.png"],

// [UIImage imageNamed:@"menu_huibao.png"], nil];

// self.unSelectedImageArray = aunSelectedImageArray;

// [aunSelectedImageArray release];

//

// NSMutableArray *aselectedImageArray = [[NSMutableArray alloc] initWithObjects:[UIImage imageNamed:@"menu_paiyou_pressed.png"],

// [UIImage imageNamed:@"menu_chat_pressed.png"],

// [UIImage imageNamed:@"menu_map_pressed.png"],

// [UIImage imageNamed:@"menu_renwu_pressed.png"],

// [UIImage imageNamed:@"menu_huibao_pressed.png"], nil];

// self.selectedImageArray = aselectedImageArray;

// [aselectedImageArray release];

//

// self.itemBgImageViewArray = [NSMutableArray array];

// _lastSelectedIndex = 0;

// _hiddenIndex = -1;

}

return self;

}

#pragma mark - itemIndex methods

- (void)setLastSelectedIndex:(int)lastSelectedIndex {

if (_lastSelectedIndex != lastSelectedIndex) {

//将上次的选中效果取消

UIImageView *lastSelectedImageView = (UIImageView *)[_itemBgImageViewArray objectAtIndex:_lastSelectedIndex];;

lastSelectedImageView.image = [_unSelectedImageArray objectAtIndex:_lastSelectedIndex];

_lastSelectedIndex = lastSelectedIndex;

}

}

- (void)setSelectedIndex:(NSUInteger)selectedIndex {

[super setSelectedIndex:selectedIndex];

//将上次的选中效果取消

self.lastSelectedIndex = selectedIndex;

//将本次的选中效果显示

UIImageView *selectedImageView = (UIImageView *)[_itemBgImageViewArray objectAtIndex:selectedIndex];

selectedImageView.image = [_selectedImageArray objectAtIndex:selectedIndex];

}

//隐藏某个tabBarItem的图片

- (void)hiddeItemImageView:(int)index {

if (_hiddenIndex != index) {

_hiddenIndex = index;

UIImageView *hiddenImageView = (UIImageView *)[_itemBgImageViewArray objectAtIndex:_hiddenIndex];

hiddenImageView.hidden = YES;

}

}

//显示某个tabBarItem的图片

- (void)showItemImageView:(int)index {

if (_hiddenIndex == index) {

UIImageView *hiddenImageView = (UIImageView *)[_itemBgImageViewArray objectAtIndex:_hiddenIndex];

hiddenImageView.hidden = NO;

_hiddenIndex = -1;

}

}

#pragma mark - View lifecycle

// Implement loadView to create a view hierarchy programmatically, without using a nib.

- (void)loadView

{

[super loadView];

self.tabBarBackgroundImage = [UIImage imageNamed:@"menu_bg.png"];

NSMutableArray *aunSelectedImageArray = [[NSMutableArray alloc] initWithObjects:[UIImageimageNamed:@"menu_paiyou.png"],

[UIImage imageNamed:@"menu_chat.png"],

[UIImage imageNamed:@"menu_map.png"],

[UIImage imageNamed:@"menu_renwu.png"],

[UIImage imageNamed:@"menu_huibao.png"], nil];

self.unSelectedImageArray = aunSelectedImageArray;

[aunSelectedImageArray release];

NSMutableArray *aselectedImageArray = [[NSMutableArray alloc] initWithObjects:[UIImageimageNamed:@"menu_paiyou_pressed.png"],

[UIImage imageNamed:@"menu_chat_pressed.png"],

[UIImage imageNamed:@"menu_map_pressed.png"],

[UIImage imageNamed:@"menu_renwu_pressed.png"],

[UIImage imageNamed:@"menu_huibao_pressed.png"], nil];

self.selectedImageArray = aselectedImageArray;

[aselectedImageArray release];

self.itemBgImageViewArray = [NSMutableArray array];

_lastSelectedIndex = 0;

_hiddenIndex = -1;

}

#define ItemWidth 50

#define ItemHeight 49

#define SideMarginX 7

#define SideMarginY 0.5

#define Spacing 14

// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.

- (void)viewDidLoad

{

[super viewDidLoad];

UIImageView *tabBarBackgroundImageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0,self.tabBar.frame.size.width, self.tabBar.frame.size.height)];

tabBarBackgroundImageView.tag = TabBarBackgroundImageViewTag;

tabBarBackgroundImageView.contentMode = UIViewContentModeScaleAspectFit;

tabBarBackgroundImageView.image = _tabBarBackgroundImage;

[self.tabBar insertSubview:tabBarBackgroundImageView atIndex:0];

[tabBarBackgroundImageView release];

for (int i = 0; i < 5; i++) {

UIImageView *itemBg = [[UIImageView alloc] initWithFrame:CGRectMake(SideMarginX +ItemWidth * i + Spacing * i, SideMarginY, ItemWidth, ItemHeight)];

itemBg.contentMode = UIViewContentModeScaleAspectFit;

itemBg.image = [_unSelectedImageArray objectAtIndex:i];

[self.tabBar insertSubview:itemBg atIndex:1];

[_itemBgImageViewArray addObject:itemBg];

[itemBg release];

}

self.selectedIndex = 0;

}

- (void)viewDidUnload

{

[super viewDidUnload];

// Release any retained subviews of the main view.

// e.g. self.myOutlet = nil;

self.itemBgImageViewArray = nil;

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation

{

// Return YES for supported orientations

return (interfaceOrientation == UIInterfaceOrientationPortrait);

}

#pragma mark - UITabBarDelegate

- (void)tabBar:(UITabBar *)tabBar didSelectItem:(UITabBarItem *)item {

self.selectedIndex = [tabBar.items indexOfObject:item];

}

@end

方法二：http://www.cocoachina.com/bbs/read.php?tid-62061-page-1.html

方法三：http://hi.baidu.com/yunhuaikong/blog/item/b0642bcbfc5ae49fc817684c.html
自定义Badge：https://github.com/boctor/idev-recipes/tree/master/CustomTabBarNotification
一些自定义控件：https://github.com/boctor/idev-recipes/tree/master/CustomTabBarNotification