iPhone的九宫格实现代码

最新推荐文章于 2022-03-22 23:07:35 发布

转载最新推荐文章于 2022-03-22 23:07:35 发布 · 593 阅读

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#iphone #image #action #手机

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本文介绍了一种在iOS应用中实现九宫格界面的方法，通过加载不同图标并设置按钮位置来构造九宫格布局。此外，还展示了如何为UINavigationBar设置背景图片。

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很多开发者会在 iPhone 软件里用到手机上经典的九宫格界面，本段实现九宫格的代码由 CocoaChina 会员“花太香齐” 分享，博客原文地址 http://www.ieliwb.com/iphone-nine-box/

核心就这2个方法:

//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];//设置按钮图片

Btn.tag = i;

frame.size.width = 59;//设置按钮坐标及大小

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];

}

}

//响应按钮事件

-(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;

//其他几个控制器类似

}

}

九宫格背景修改可以这样实现:

- (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背景图片可以这样实现:

@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