iPhone開發九宮格代碼實現是本文要介紹的內容，九宮格大家應該很感興趣吧？那么本文就是來介紹九宮格的制作方法，先來看詳細內容。看到CocoaChina很多同學在問,其實很簡單,我這是用圖片堆砌實現的九宮格,分享如下，代碼如下。

效果圖:

核心就這2個方法:

//Power by ieliwb.com  
- (void)viewDidLoad {  
    [super viewDidLoad];  
    NSArray* imageNames = [NSArray arrayWithObjects:                                    
@"ico_mobile.png",                                    
@"ico_idcard.png",                                 
@"ico_postcode.png",                                   
  @"ico_flight.png",                                        
 @"ico_translate.png",                               
@"ico_phone.png",                                       
@"ico_car.png",                              
@"ico_health.png",                                     
@"ico_bjxm.png", nil];  
    UIButton *Btn;  
    for (int i=0; i<9; i++) {  
        CGRect frame;  
        Btn = [[UIButton buttonWithType:UIButtonTypeCustom] retain];  
        [Btn setImage:[UIImage imageNamed:[imageNames objectAtIndex: i]] forState:UIControlStateNormal];//設置按鈕圖片  
        Btn.tag = i;  
        frame.size.width = 59;//設置按鈕坐標及大小  
        frame.size.height = 75;  
        frame.origin.x = (i%3)*(59+32)+40;  
        frame.origin.y = floor(i/3)*(75+24)+40;  
        [Btn setFrame:frame];  
          
        [Btn setBackgroundColor:[UIColor clearColor]];  
        [Btn addTarget:self action:@selector(btnPressed:) forControlEvents:UIControlEventTouchUpInside];  
        [self.view addSubview:Btn];  
        [Btn release];  
    }  
}  
   
//響應按鈕事件  
-(void)btnPressed:(id)sender{  
    UIButton *Btn = (UIButton *)sender;  
        int index = Btn.tag;  
    switch (index) {  
        case 0:  
            if(mobileController==nil)  
                mobileController = [[MobileController alloc]init];  
            [self.navigationController pushViewController:mobileController animated:YES];  
            break;  
        //其他幾個控制器類似  
    }  
} 

九宮格背景修改可以這樣實現:

- (void)loadView {  
    UIImageView *contentView = [[UIImageView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]];  
    [contentView setImage:[UIImage imageNamed:@"subview_9_bg.png"]];  
    [contentView setUserInteractionEnabled:YES];  
    self.view = contentView;  
    [contentView release];  
} 

UINavigationBar背景圖片可以這樣實現:

@implementation UINavigationBar (CustomImage)  
- (void)drawRect:(CGRect)rect {  
    UIImage *image = [UIImage imageNamed: @"top_bg.png"];  
    [image drawInRect:CGRectMake(0, 0, self.frame.size.width, self.frame.size.height)];  
}  
@end 

小結：iPhone開發九宮格代碼實現的內容介紹完了，希望本文對你有所幫助！