iOS 启动页后广告Demo
重点！
对于启动页后的广告，相信大家也都看到过很多很多的，比如我自己常看到的有 QQ音乐，爱奇艺了。你点击了APP，它会启动就会随之启动。。其实这些APP的启动页是没有消失的，你去认真的观察一下！所以它们的顺序就变成了 点击 —> 启动页 —> 广告 下面是我截的QQ音乐的顺序图。不知道怎么弄GIF图。?
为什么说这是重点呢，可能有些小伙伴会误以为使用广告替代了启动页，但启动页怎样做成一个广告呢，还要加一些点击时间之类的，很是不懂！现在就清楚了，至少知道它的一个流程才会有思路的。
还有一点，这个广告是缓存了的，你试着启动几次，它会给你不同的启动广告的，完事了，你把你的4G和Wifi都关掉，然后再去启动相应的APP，广告依旧是会出现的。。
一个思路：
这里我说我的一个思路：
1：把广告先封装到一个View当中去，然后把它加载到一个控制器当中显示，因为涉及到缓存和隐藏导航和标签栏的状况。
2：在 APPDelegate 的 didFinishLaunchingWithOptions 中进行一个根视图的切换（同志们看了下面代码分析要觉得有问题，欢迎指正）。
这里是广告View的.m文件代码：
#import "AdvertisingView.h"
#import "UIImageView+WebCache.h"
@interface AdvertisingView()
@property(nonatomic,strong) UIImageView * advertisingView;
@property(nonatomic,strong) UIButton * advertisingJumpButton;
@property(nonatomic,strong) UILabel * timeLabel;
@property(nonatomic,assign) int secondsCountDown;
@property(nonatomic,strong) NSTimer * countDownTimer;
/** 定时器(这里不用带*，因为dispatch_source_t就是个类，内部已经包含了*) */
@property (nonatomic, strong) dispatch_source_t timer;
@end
@implementation AdvertisingView
/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect {
// Drawing code
}
*/
-(instancetype) initWithFrame:(CGRect)frame
{
if (self = [super initWithFrame:frame]) {
[self addSubview:self.advertisingView];
[self addSubview:self.advertisingJumpButton];
[self addSubview:self.timeLabel];
}
return self;
}
-(void)startplayAdvertisingView:(void (^)(AdvertisingView *))advertisingview
{
[[UIApplication sharedApplication].keyWindow addSubview:self];
[[UIApplication sharedApplication].keyWindow bringSubviewToFront:self];
// 这里的block advertisingview ;
// advertisingview(); 你要调用就要传参数过去，调用的具体代码在 APPdelegate 里面调用的时候添加这个 block具体的代码、、、
__block int count = 3;
// 获得队列
dispatch_queue_t queue = dispatch_get_main_queue();
// 创建一个定时器(dispatch_source_t本质还是个OC对象)
self.timer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, queue);
// 设置定时器的各种属性（几时开始任务，每隔多长时间执行一次）
// GCD的时间参数，一般是纳秒（1秒 == 10的9次方纳秒）
// 何时开始执行第一个任务
// dispatch_time(DISPATCH_TIME_NOW, 1.0 * NSEC_PER_SEC) 比当前时间晚3秒
dispatch_time_t start = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1.0 * NSEC_PER_SEC));
uint64_t interval = (uint64_t)(1.0 * NSEC_PER_SEC);
dispatch_source_set_timer(self.timer, start, interval, 0);
// 设置回调
dispatch_source_set_event_handler(self.timer, ^{
/**
* 回主线程更新UI
*/
count--;
dispatch_async(dispatch_get_main_queue(), ^{
if (count == 0) {
// 取消定时器
dispatch_cancel(self.timer);
self.timer = nil;
[self removeFromSuperview];
/**
* 广告显示完，就调用 block 更换 rootcontroller
*/
advertisingview(self);
}
else{
_timeLabel.text = [NSString stringWithFormat:@"%d",count];}
});
});
// 启动定时器
dispatch_resume(self.timer);
}
-(UIImageView * )advertisingView
{
if (_advertisingView == nil) {
_advertisingView =[[UIImageView alloc]initWithFrame:self.bounds];
[_advertisingView sd_setImageWithURL:[NSURL URLWithString:@"http://g.hiphotos.baidu.com/zhidao/pic/item/f2deb48f8c5494ee665ec00f29f5e0fe99257eac.jpg"] completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL) {
}];
}
return _advertisingView;
}
-(UILabel * )timeLabel
{
if (_timeLabel == nil) {
_timeLabel = [[UILabel alloc]initWithFrame:CGRectMake(self.bounds.size.width - 50, 50, 50, 40)];
_timeLabel.backgroundColor =[UIColor blackColor];
_timeLabel.alpha = 0.5;
_timeLabel.textColor = [UIColor whiteColor];
}
return _timeLabel;
}
-(UIButton * )advertisingJumpButton
{
if (_advertisingJumpButton == nil) {
_advertisingJumpButton = [UIButton buttonWithType:UIButtonTypeCustom];
_advertisingJumpButton.frame = CGRectMake(0, self.bounds.size.height - 80, self.bounds.size.width, 60);
[_advertisingJumpButton setTitle:@"了解详情" forState:UIControlStateNormal];
[_advertisingJumpButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
[_advertisingJumpButton addTarget:self action:@selector(buttonclick) forControlEvents:UIControlEventTouchUpInside];
_advertisingJumpButton.titleLabel.font = [UIFont systemFontOfSize:18];
_advertisingJumpButton.backgroundColor = [UIColor blackColor];
_advertisingJumpButton.alpha = 0.5;
_advertisingJumpButton.contentHorizontalAlignment = UIControlContentHorizontalAlignmentRight;
_advertisingJumpButton.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
}
return _advertisingJumpButton;
}
-(void)buttonclick
{
}
@end下面是添加这个View的控制器的.m文件：
#import "AdvertisingViewController.h"
@interface AdvertisingViewController ()
@end
@implementation AdvertisingViewController
/**
* 可以在这个控制器里面做缓存？爱奇艺，QQ音乐的广告是缓存了的！
*/
-(void)viewWillAppear:(BOOL)animated
{
[self setNeedsStatusBarAppearanceUpdate];
}
- (BOOL)prefersStatusBarHidden {
return YES;
}
-(void)viewDidLoad {
[super viewDidLoad];
[self.view addSubview:self.adverView];
}
-(AdvertisingView *)adverView
{
if (_adverView == nil) {
_adverView = [[ AdvertisingView alloc]initWithFrame:self.view.bounds];
}
return _adverView;
}
-(void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
/*
#pragma mark - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/最重要的下面！！
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
self.window.backgroundColor = [UIColor whiteColor];
/**
* 进来先让启动页沉睡 2 秒钟
*/
[NSThread sleepForTimeInterval:2.0];
[[UIApplication sharedApplication] setStatusBarHidden:NO withAnimation:UIStatusBarAnimationFade];
AdvertisingViewController * adviewcontroller = [[AdvertisingViewController alloc]init];
ZXTabBarController * tabbarcontroller = [[ZXTabBarController alloc]init];
// 这里要添加根控制器，不添加等下面添加是不行的。
self.window.rootViewController = adviewcontroller ;
[self.window makeKeyAndVisible];
[adviewcontroller.adverView startplayAdvertisingView:^(AdvertisingView * adverview) {
// 更换根控制器
self.window.rootViewController = tabbarcontroller;
}];
// Override point for customization after application launch.
return YES;
} 总结一下：
这样做，效果是实现了，但我心里一直的疑问就是在上面的更换根控制器这里，这样写效果是没问题的，下面我也会把效果图给大家看一下，本来这里我感觉就是这整个效果的一个核心的地方，大家要觉得有问题。。欢迎来撩！！要是你喜欢的话。。哈哈哈 这里有我的QQ可以联系到我
最后的效果图：
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原始发表：2016-07-05 ，如有侵权请联系 cloudcommunity@tencent.com 删除
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