学习制作iOS程序第四天:工具类、网络请求类和首页之下拉放大图,首页之图标菜单(15~17)

前置工作好像做的差不多了,是不是该干点正事了?

十五:创建ToolsHelper和HttpHelper

这两个文件分别是工具类和网络请求类。具体代码就不贴了。贴下h文件吧。

#import <Foundation/Foundation.h>

@interface ToolsHelper : NSObject
//单例模式
+(instancetype)toolsHelper;

#pragma mark - 弹出HUD提示
-(void)ShowHUDWithTitle:(NSString *)title andSeconds:(NSInteger)time;
-(void)ShowHUDWithTitle:(NSString *)title;
-(void)CloseHUD;

#pragma mark - 根据字节返回大小
-(NSString *)fileSizeWithIntege:(NSInteger)size;


@end

 

#import <Foundation/Foundation.h>

//代理方法
@protocol HttpHelperDelegate <NSObject>

-(void)HttpExecuteSuccess:(AFHTTPRequestOperation *)operation andResponseObject:(id)responseObject andFlag:(NSString *)flag;
-(void)HttpExecuteFailure:(AFHTTPRequestOperation *)operation andError:(NSError *)error andFlag:(NSString *)flag;

@end

@interface HttpHelper : NSObject

@property(nonatomic,weak) id<HttpHelperDelegate>delegate;
-(HttpHelper *)initHttpHelper;
+(instancetype)httpHelper;

#pragma mark - 取消网络请求
-(void)CancelAllRequest;

#pragma mark - 通用get/post请求提交
-(void)getDataWithURLString:(NSString *)urlString andParameters:(NSMutableDictionary *)dict andHUD:(BOOL)ishud andFlag:(NSString *)flag;
-(void)postDataWithURLString:(NSString *)urlString andParameters:(NSMutableDictionary *)dict andHUD:(BOOL)ishud andFlag:(NSString *)flag;

@end

 

十六:首页之一 - 宣传图片(关键字,下拉图片放大)

参考网站:http://jingyan.baidu.com/album/fdffd1f85a3a4af3e98ca13c.html?picindex=1,他用的tableview我用的scrollview

.h文件代码

@property(strong,nonatomic) UIScrollView *scrollview;
@property(strong,nonatomic) UIImageView *zoomImageView;

.m文件代码的viewDidload方法

    //页面标题
    self.title=@"首页";
    self.navigationController.navigationBar.hidden=YES;
    
    //初始化scrollview
    self.scrollview =[[UIScrollView alloc] initWithFrame:self.view.bounds];
    self.scrollview.contentInset = UIEdgeInsetsMake(MAINBGHEIGHT, 0, 0, 0);
    self.scrollview.delegate = self;
    self.scrollview.contentSize = CGSizeMake(SCREEN_WIDTH, SCREEN_HEIGHT);
    [self.view addSubview:_scrollview];
    
    //初始化缩放图片
    self.zoomImageView = [[UIImageView alloc]initWithFrame:CGRectMake(0, -MAINBGHEIGHT, SCREEN_WIDTH, MAINBGHEIGHT)];
    self.zoomImageView.image = [UIImage imageNamed:@"main_bg"];
    self.zoomImageView.contentMode = UIViewContentModeScaleAspectFill;
    [self.scrollview addSubview:_zoomImageView];
#pragma mark scrollview滚动事件
-(void)scrollViewDidScroll:(UIScrollView *)scrollView
{
    //当滚动的时候缩放图片
    CGFloat y = _scrollview.contentOffset.y;
    if (y<=200)
    {
        CGRect frame=_zoomImageView.frame;
        frame.origin.y = y;
        frame.size.height = -y;
        _zoomImageView.frame = frame;
    }
}

 

十七:首页之三 - 图标导航

一共有8个导航图标,为了精确排版,通过循环遍历来处理图片和文字的展示。

1、定义变量

    NSArray *arrMenuImage;
    NSArray *arrMenuText;

2、在viewDidload方法中初始化数据

    //初始化八个图片导航信息
    arrMenuImage = [NSArray arrayWithObjects:@"menu_project",@"menu_sale",@"menu_rent",@"menu_agent",@"menu_maps",@"menu_jisuanqi",@"menu_news",@"menu_tools",nil];
    arrMenuText=[NSArray arrayWithObjects:@"新房",@"二手房",@"租房",@"经纪人",@"地图找房",@"计算器",@"新闻资讯",@"实用工具",nil];
    [self initMenu]; 

3、初始化8个图标

#pragma mark 初始化8个图标
-(void)initMenu
{
    CGFloat imgwidth = 46.0f;
    CGFloat imgpadding = (SCREEN_WIDTH - imgwidth*4)/5;
    for (int i=1; i<=arrMenuImage.count; i++) {
        int row = ceil((i-0.1f)/4);
        int col = i%4;
        if(col==0){col=4;}
        
        UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
        btn.frame=CGRectMake(imgpadding+(col-1)*(imgwidth+imgpadding), 15*row+(row-1)*(imgwidth+15), imgwidth, imgwidth);
        btn.tag=i;
        [btn setImage:[UIImage imageNamed:arrMenuImage[i-1]] forState:UIControlStateNormal];
        [btn addTarget:self action:@selector(btnClick:) forControlEvents:UIControlEventTouchUpInside];
        [_scrollview addSubview:btn];
        
        UILabel *lbl=[[UILabel alloc] init];
        lbl.text=arrMenuText[i-1];
        lbl.frame=CGRectMake(imgpadding/2 + (col-1)*((SCREEN_WIDTH-imgpadding)/4), btn.frame.origin.y+imgwidth, (SCREEN_WIDTH-imgpadding)/4, 25);
        lbl.textAlignment=NSTextAlignmentCenter;
        lbl.font=[UIFont systemFontOfSize:12];
        [_scrollview addSubview:lbl];
    }
}

4、点击菜单事件,先用alert占位。

#pragma mark 点击菜单的事件
-(void)btnClick:(UIButton *)btn
{
    switch (btn.tag) {
        case 1://新房
            [[ToolsHelper toolsHelper] ShowAlertWithTitle:@"开发中..." andContent:@"此功能正在开发中,敬请期待"];
            break;
        case 2://二手房
            [[ToolsHelper toolsHelper] ShowAlertWithTitle:@"开发中..." andContent:@"此功能正在开发中,敬请期待"];
            break;
        case 3://租房
            [[ToolsHelper toolsHelper] ShowAlertWithTitle:@"开发中..." andContent:@"此功能正在开发中,敬请期待"];
            break;
        case 4://经纪人
            [[ToolsHelper toolsHelper] ShowAlertWithTitle:@"开发中..." andContent:@"此功能正在开发中,敬请期待"];
            break;
        case 5://地图找房
            [[ToolsHelper toolsHelper] ShowAlertWithTitle:@"开发中..." andContent:@"此功能正在开发中,敬请期待"];
            break;
        case 6://计算器
            [[ToolsHelper toolsHelper] ShowAlertWithTitle:@"开发中..." andContent:@"此功能正在开发中,敬请期待"];
            break;
        case 7://新闻资讯
            [[ToolsHelper toolsHelper] ShowAlertWithTitle:@"开发中..." andContent:@"此功能正在开发中,敬请期待"];
            break;
        case 8://实用工具
            [[ToolsHelper toolsHelper] ShowAlertWithTitle:@"开发中..." andContent:@"此功能正在开发中,敬请期待"];
            break;
        default:
            break;
    }
}

 

最后记录一个问题。如何消除第三方组件的ARC错误或者其他警告?

作为一个非处女座的完美主义者,编译的时候出现好多的警告实在不能忍受。

1、进入Targets,Build Phases,找到Complie Source下的相应的报错文件

2、在Compiler Flags中加入“-fno-objc-arc”可以去掉ARC警告

3、加入“-w”可以去除所有警告

posted @ 2015-12-11 10:57  RandyTech  阅读(299)  评论(0编辑  收藏  举报