启动页

一、AppDelegate.m里面引入类ViewController.h然后设置首页面

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

        self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

        ViewController *mainVC=[[ViewController alloc]init];

         UINavigationController *nav=[[UINavigationController alloc]initWithRootViewController:mainVC];

         self.window.rootViewController = nav;

         [self.window makeKeyAndVisible];

        return YES;

}

二、新建FlashPageView类继承UIView，用来设置启动页

1、FlashPageView.h

#define kscreenWidth [UIScreen mainScreen].bounds.size.width

#define kscreenHeight [UIScreen mainScreen].bounds.size.height

#import  <UIKit/UIKit.h>

typedef void (^PushToAdBlock)(void);

@interface FlashPageView : UIView

@property (nonatomic, strong) UIImageView *adView;/** 图片*/

@property (nonatomic, copy) NSString *filePath;/** 图片路径*/

@property (nonatomic,copy) PushToAdBlock  pushToAdBlock;

- (void)show;/** 显示启动页面方法*/

-(void) TouchPushToAdBlock:(PushToAdBlock)pushToAdBlock;

@end

2、FlashPageView.m

#import "FlashPageView.h"

@interface FlashPageView ()

@property (nonatomic, strong) UIButton *countBtn;  /**倒计时按钮*/

@property (nonatomic, strong) NSTimer *countTimer; /**定时器*/

@property (nonatomic, assign) int count;  /**倒计时*/

@end

static int const showtime = 10;  // 启动页显示的时间

@implementation FlashPageView

- (instancetype)initWithFrame:(CGRect)frame{

        if (self = [super initWithFrame:frame]) {

        // 1.闪频页图片

        _adView = [[UIImageView alloc] initWithFrame:frame];

       _adView.image = [UIImage imageNamed:@"启动页"];

       _adView.userInteractionEnabled = YES;//用户交互

       _adView.contentMode = UIViewContentModeScaleAspectFill;// 等比例缩放至父容器完全装下图片为止.图片没有变形

        _adView.clipsToBounds = YES;

         UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(pushToAd)];  //利用手势给控件添加点击事件

        [_adView addGestureRecognizer:tap];

        // 2.跳过按钮

        CGFloat btnW = 60;

        CGFloat btnH = 30;

        _countBtn = [[UIButton alloc] initWithFrame:CGRectMake(kscreenWidth - btnW - 24, btnH, btnW, btnH)];

        [_countBtn addTarget:self action:@selector(dismiss) forControlEvents:UIControlEventTouchUpInside];

        [_countBtn setTitle:[NSString stringWithFormat:@"跳过%d", showtime] forState:UIControlStateNormal];

        _countBtn.titleLabel.font = [UIFont systemFontOfSize:15];

        [_countBtn setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];

        _countBtn.backgroundColor = [UIColor colorWithRed:38 /255.0 green:38 /255.0 blue:38 /255.0 alpha:0.6];

         _countBtn.layer.cornerRadius = 4;

         [_countBtn addTarget:self action:@selector(countBtnClick) forControlEvents:UIControlEventTouchUpInside];

         [self addSubview:_adView];

         [self addSubview:_countBtn];

        }

        return self;

}

- (NSTimer *)countTimer{

          if (!_countTimer) {

                   _countTimer = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(countDown) userInfo:nil repeats:YES];

         }

         return _countTimer;

}

-(void)countBtnClick{

         [self dismiss];

}

- (void)setFilePath:(NSString *)filePath{

        _filePath = filePath;

       _adView.image = [UIImage imageWithContentsOfFile:filePath];

}

- (void)pushToAd{

       NSLog(@"点击图片");

        __weak typeof(self) WeakSelf = self;

       if (WeakSelf.pushToAdBlock) {

               WeakSelf.pushToAdBlock();

        }

         [self dismiss];

}

-(void) TouchPushToAdBlock:(PushToAdBlock)pushToAdBlock{

         self.pushToAdBlock = pushToAdBlock;

}

- (void)countDown{

         _count --;

         [_countBtn setTitle:[NSString stringWithFormat:@"跳过%d",_count] forState:UIControlStateNormal];

        if (_count == 0) {

                [self.countTimer invalidate];

                self.countTimer = nil;

                [self dismiss];

          }

}

- (void)show{

            // 倒计时方法1：GCD

            //    [self startCoundown];

            // 倒计时方法2：定时器

              [self startTimer];

              UIWindow *window = [UIApplication sharedApplication].keyWindow;

             [window addSubview:self];

}

// 定时器倒计时

- (void)startTimer{

           _count = showtime;

           [[NSRunLoop mainRunLoop] addTimer:self.countTimer forMode:NSRunLoopCommonModes];//定时器只运行在NSDefaultRunLoopMode下，一旦RunLoop进入其他模式，这个定时器就不会工作，该模式表示在没有输入源的情况下

}

//// GCD多线程倒计时

//- (void)startCoundown{

//    __block int timeout = showtime + 1; //倒计时时间 + 1

//    dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);

//    dispatch_source_t _timer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0,queue);

//    dispatch_source_set_timer(_timer,dispatch_walltime(NULL, 0),1.0 * NSEC_PER_SEC, 0); //每秒执行

//    dispatch_source_set_event_handler(_timer, ^{

//    if(timeout <= 0){ //倒计时结束，关闭

//            dispatch_source_cancel(_timer);

//            dispatch_async(dispatch_get_main_queue(), ^{

//                [self dismiss];

//            });

//        }else{

//            dispatch_async(dispatch_get_main_queue(), ^{

//              [_countBtn setTitle:[NSString stringWithFormat:@"跳过%d",timeout] forState:UIControlStateNormal];

//            });

//            timeout--;

//        }

//    });

//    dispatch_resume(_timer);

//}

// 移除闪频页面

- (void)dismiss{

            [UIImageView animateWithDuration:2.0 animations:^{

                     self.adView.alpha = 0;

                     [_countBtn removeFromSuperview];

                     [self.adView removeFromSuperview];

            } completion:^(BOOL finished) {

                    [self removeFromSuperview];

            }];

}

三、在ViewController.m里面引入类FlashPageView.h然后调用方法

- (void)viewDidLoad {

            [super viewDidLoad];

            self.view.backgroundColor = [UIColor whiteColor];

            self.title = @"首页";

            FlashPageView *flashPage = [[FlashPageView alloc]initWithFrame:self.view.bounds];

            [flashPage show];

}