iPhone九宮格的實現

看到很多同學在問,其實很簡單,我這是用圖片堆砌實現的九宮格,分享如下:

效果圖:

核心就這2個方法:

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1. //Power by ieliwb.com  
2. - (void)viewDidLoad {  
3.     [super viewDidLoad];  
4.       
5.     NSArray* imageNames = [NSArray arrayWithObjects:  
6.                                         @"ico_mobile.png",   
7.                                         @"ico_idcard.png",   
8.                                         @"ico_postcode.png",  
9.                                         @"ico_flight.png",   
10.                                         @"ico_translate.png",  
11.                                         @"ico_phone.png",   
12.                                         @"ico_car.png",   
13.                                         @"ico_health.png",   
14.                                         @"ico_bjxm.png", nil];  
15.    
16.     UIButton *Btn;  
17.     for (int i=0; i<9; i++) {  
18.         CGRect frame;  
19.         Btn = [[UIButton buttonWithType:UIButtonTypeCustom] retain];  
20.         [Btn setImage:[UIImage imageNamed:[imageNames objectAtIndex: i]]forState:UIControlStateNormal];//設置按鈕圖片  
21.           
22.         Btn.tag = i;  
23.           
24.         frame.size.width = 59;//設置按鈕坐標及大小  
25.         frame.size.height = 75;  
26.         frame.origin.x = (i%3)*(59+32)+40;  
27.         frame.origin.y = floor(i/3)*(75+24)+40;  
28.         [Btn setFrame:frame];  
29.           
30.         [Btn setBackgroundColor:[UIColor clearColor]];  
31.         [Btn addTarget:self action:@selector(btnPressed:)forControlEvents:UIControlEventTouchUpInside];  
32.         [self.view addSubview:Btn];  
33.         [Btn release];  
34.           
35.     }  
36.           
37. }  
38.    
39. //響應按鈕事件  
40. -(void)btnPressed:(id)sender{  
41.     UIButton *Btn = (UIButton *)sender;  
42.         int index = Btn.tag;  
43.       
44.     switch (index) {  
45.         case 0:  
46.             if(mobileController==nil)  
47.                 mobileController = [[MobileController alloc]init];  
48.             [self.navigationController pushViewController:mobileControlleranimated:YES];  
49.             break;  
50.         //其他幾個控制器類似  
51.     }  
52.    
53. }  

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1. - (void)loadView {  
2.     UIImageView *contentView = [[UIImageView alloc] initWithFrame:[[UIScreenmainScreen] applicationFrame]];  
3.     [contentView setImage:[UIImage imageNamed:@"subview_9_bg.png"]];  
4.     [contentView setUserInteractionEnabled:YES];  
5.     self.view = contentView;  
6.     [contentView release];  
7. }  
8. UINavigationBar背景圖片可以這樣實現:  
9.   
10. @implementation UINavigationBar (CustomImage)  
11. - (void)drawRect:(CGRect)rect {  
12.     UIImage *image = [UIImage imageNamed: @"top_bg.png"];  
13.     [image drawInRect:CGRectMake(0, 0, self.frame.size.width,self.frame.size.height)];  
14. }  
15. @end