应用添加广告启动页

通常一个app启动的时候会加载一个广告启动页。如下图：

ADStartPage.gif

不啰嗦直接上代码

• 首先创建QBYADViewController类继承UIViewController并且勾选创建xib文件。因为界面比较简单所以用xib描述。
  界面如下图：

xib.png

launch Image view 以后放启动图片，防止广告页加载失败。
Ad Contain View 是占位用的，放广告页用。
Jump Btn 是跳过按钮。
为什么这么设计呢？
1.广告业务逻辑
2.占位视图思想:有个控件不确定尺寸,但是层次结构已经确定,就可以使用占位视图思想
3.屏幕适配.通过屏幕高度判断

• 接着就是 QBYADViewController中的代码
  objc
• (void)viewDidLoad {
  [super viewDidLoad];
  // 设置启动图片
  [self setupLaunchImage];
  // 加载广告数据 => 拿到活时间 => 服务器 => 查看接口文档 1.判断接口对不对 2.解析数据(w_picurl,ori_curl:跳转到广告界面,w,h) => 请求数据(AFN)
  [self loadAdData];
  // 创建定时器
  _timer = [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(timeChange) userInfo:nil repeats:YES];
  }

其中设置启动图片为防止图片广告图片加载不出来。

```objc```
/***********屏幕适配*************/
#define QBYScreenW [UIScreen mainScreen].bounds.size.width
#define QBYScreenH [UIScreen mainScreen].bounds.size.height
#define iphone6P (QBYScreenH == 736)
#define iphone6 (QBYScreenH == 667)
#define iphone5 (QBYScreenH == 568)
#define iphone4 (QBYScreenH == 480)
/***********屏幕适配*************/

// 设置启动图片
- (void)setupLaunchImage
{
    // 6p:LaunchImage-800-Portrait-736h@3x.png
    // 6:LaunchImage-800-667h@2x.png
    // 5:LaunchImage-568h@2x.png
    // 4s:LaunchImage@2x.png
    if (iphone6P) { // 6p
        self.launchImageView.image = [UIImage imageNamed:@"LaunchImage-800-Portrait-736h@3x"];
    } else if (iphone6) { // 6
        self.launchImageView.image = [UIImage imageNamed:@"LaunchImage-800-667h"];
    } else if (iphone5) { // 5
        self.launchImageView.image = [UIImage imageNamed:@"LaunchImage-568h"];
        
    } else if (iphone4) { // 4
        
        self.launchImageView.image = [UIImage imageNamed:@"LaunchImage-700"];
    }
    
}

• 加载广告页 新建一个数据模型类QBYADItem

objc

• (void)loadAdData
  {
  // unacceptable content-type: text/html" 响应头

  // 1.创建请求会话管理者
  AFHTTPSessionManager *mgr = [AFHTTPSessionManager manager];

  // 2.拼接参数
  NSMutableDictionary *parameters = [NSMutableDictionary dictionary];
  parameters[@"code2"] = code2;

  // 3.发送请求
  [mgr GET:@"http://mobads.baidu.com/cpro/ui/mads.php?code2=phcqnauGuHYkFMRquANhmgN_IauBThfqmgKsUARhIWdGULPxnz3vndtkQW08nau_I1Y1P1Rhmhwz5Hb8nBuL5HDknWRhTA_qmvqVQhGGUhI_py4MQhF1TvChmgKY5H6hmyPW5RFRHzuET1dGULnhuAN85HchUy7s5HDhIywGujY3P1n3mWb1PvDLnvF-Pyf4mHR4nyRvmWPBmhwBPjcLPyfsPHT3uWm4FMPLpHYkFh7sTA-b5yRzPj6sPvRdFhPdTWYsFMKzuykEmyfqnauGuAu95Rnsnbfknbm1QHnkwW6VPjujnBdKfWD1QHnsnbRsnHwKfYwAwiu9mLfqHbD_H70hTv6qnHn1PauVmynqnjclnj0lnj0lnj0lnj0lnj0hThYqniuVujYkFhkC5HRvnB3dFh7spyfqnW0srj64nBu9TjYsFMub5HDhTZFEujdzTLK_mgPCFMP85Rnsnbfknbm1QHnkwW6VPjujnBdKfWD1QHnsnbRsnHwKfYwAwiuBnHfdnjD4rjnvPWYkFh7sTZu-TWY1QW68nBuWUHYdnHchIAYqPHDzFhqsmyPGIZbqniuYThuYTjd1uAVxnz3vnzu9IjYzFh6qP1RsFMws5y-fpAq8uHT_nBuYmycqnau1IjYkPjRsnHb3n1mvnHDkQWD4niuVmybqniu1uy3qwD-HQDFKHakHHNn_HR7fQ7uDQ7PcHzkHiR3_RYqNQD7jfzkPiRn_wdKHQDP5HikPfRb_fNc_NbwPQDdRHzkDiNchTvwW5HnvPj0zQWndnHRvnBsdPWb4ri3kPW0kPHmhmLnqPH6LP1ndm1-WPyDvnHKBrAw9nju9PHIhmH9WmH6zrjRhTv7_5iu85HDhTvd15HDhTLTqP1RsFh4ETjYYPW0sPzuVuyYqn1mYnjc8nWbvrjTdQjRvrHb4QWDvnjDdPBuk5yRzPj6sPvRdgvPsTBu_my4bTvP9TARqnam" parameters:parameters progress:nil success:^(NSURLSessionDataTask * _Nonnull task, NSDictionary * _Nullable responseObject) {

// [responseObject writeToFile:@"/Users/gujunqi/Desktop/ad.plist" atomically:YES];
// 请求数据 -> 解析数据(写成plist文件) -> 设计模型 -> 字典转模型 -> 展示数据
// 获取字典
NSDictionary *adDict = [responseObject[@"ad"] lastObject];

    // 字典转模型
    _item = [QBYADItem mj_objectWithKeyValues:adDict];
    
    // 创建UIImageView展示图片 =>
    CGFloat h = QBYScreenW / _item.w * _item.h;
    
    self.adView.frame = CGRectMake(0, 0, QBYScreenW, h);
    // 加载广告网页
    [self.adView sd_setImageWithURL:[NSURL URLWithString:_item.w_picurl]];
    
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
    
    NSLog(@"%@",error);
    
}];

}

- 其余代码，很好理解

```objc```

- (void)timeChange
{
    // 倒计时
    static int i = 10;
    
    if (i == 0) {
        [self clickJump:nil];
    }
    
    i--;
    
    // 设置跳转按钮文字
    [_jumpBtn setTitle:[NSString stringWithFormat:@"跳转 (%d)",i] forState:UIControlStateNormal];
}

// 点击跳转做的事情
- (IBAction)clickJump:(id)sender {
    // 销毁广告界面,进入主框架界面
    QBYTabBarController *tabBarVc = [[QBYTabBarController alloc] init];
    [UIApplication sharedApplication].keyWindow.rootViewController = tabBarVc;
    
    // 干掉定时器
    [_timer invalidate];
}

- (UIImageView *)adView
{
    if (_adView == nil) {
        UIImageView *imageView = [[UIImageView alloc] init];
        
        [self.adContainView addSubview:imageView];
        
        UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tap)];
        [imageView addGestureRecognizer:tap];
        
        imageView.userInteractionEnabled = YES;
        
        
        _adView = imageView;
    }
    
    return _adView;
}

// 点击广告界面调用
- (void)tap
{
    // 跳转到界面 => safari
    NSURL *url = [NSURL URLWithString:_item.ori_curl];
    UIApplication *app = [UIApplication sharedApplication];
    if ([app canOpenURL:url]) {
        [app openURL:url];
    }
}

代码和资料具体下载地址：
https://github.com/qibingying/iosDevelopInsight/tree/master/%E5%B9%BF%E5%91%8A%E5%90%AF%E5%8A%A8%E9%A1%B5