objective-c xcode iOS开发中实现广告页的思路

参考XHLaunchAd https://github.com/CoderZhuXH/XHLaunchAd

温馨提示：由于有复制的代码，文章少长，建议在大屏上阅读，效果更佳！

看代码

+(XHLaunchAd *)imageAdWithImageAdConfiguration:(XHLaunchImageAdConfiguration *)imageAdconfiguration delegate:(id)delegate{

XHLaunchAd *launchAd = [XHLaunchAd shareLaunchAd];

if(delegate) launchAd.delegate = delegate;

launchAd.imageAdConfiguration = imageAdconfiguration;

return launchAd;

}

+(XHLaunchAd *)shareLaunchAd{

static XHLaunchAd *instance = nil;

static dispatch_once_t oneToken;

dispatch_once(&oneToken,^{

instance = [[XHLaunchAd alloc] init];

});

return instance;

}

- (instancetype)init{

self = [super init];

if (self) {

XHWeakSelf

[self setupLaunchAd];

[[NSNotificationCenter defaultCenter] addObserverForName:UIApplicationWillEnterForegroundNotification object:nil queue:nil usingBlock:^(NSNotification * _Nonnull note) {

[self setupLaunchAdEnterForeground];

}];

[[NSNotificationCenter defaultCenter] addObserverForName:UIApplicationDidEnterBackgroundNotification object:nil queue:nil usingBlock:^(NSNotification * _Nonnull note) {

[self removeOnly];

}];

[[NSNotificationCenter defaultCenter] addObserverForName:XHLaunchAdDetailPageWillShowNotification object:nil queue:nil usingBlock:^(NSNotification * _Nonnull note) {

weakSelf.detailPageShowing = YES;

}];

[[NSNotificationCenter defaultCenter] addObserverForName:XHLaunchAdDetailPageShowFinishNotification object:nil queue:nil usingBlock:^(NSNotification * _Nonnull note) {

weakSelf.detailPageShowing = NO;

}];

}

return self;

}

-(void)setupLaunchAd{

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

window.rootViewController = [XHLaunchAdController new];

window.rootViewController.view.backgroundColor = [UIColor clearColor];

window.rootViewController.view.userInteractionEnabled = NO;

window.windowLevel = UIWindowLevelStatusBar + 1;

window.hidden = NO;

window.alpha = 1;

_window = window;

/** 添加launchImageView */

[_window addSubview:[[XHLaunchImageView alloc] initWithSourceType:_sourceType]];

_window.backgroundColor = [UIColor redColor];

}

-(void)setImageAdConfiguration:(XHLaunchImageAdConfiguration *)imageAdConfiguration{

_imageAdConfiguration = imageAdConfiguration;

_launchAdType = XHLaunchAdTypeImage;

[self setupImageAdForConfiguration:imageAdConfiguration];

}

/**图片*/

-(void)setupImageAdForConfiguration:(XHLaunchImageAdConfiguration *)configuration{

if(_window == nil) return;

[self removeSubViewsExceptLaunchAdImageView];

XHLaunchAdImageView *adImageView = [[XHLaunchAdImageView alloc] init];

[_window addSubview:adImageView];

/** frame */

if(configuration.frame.size.width>0 && configuration.frame.size.height>0) adImageView.frame = configuration.frame;

if(configuration.contentMode) adImageView.contentMode = configuration.contentMode;

/** webImage */

if(configuration.imageNameOrURLString.length && XHISURLString(configuration.imageNameOrURLString)){ // 网络图片

[XHLaunchAdCache async_saveImageUrl:configuration.imageNameOrURLString]; // 磁盘保存图片地址

/** 自设图片 */

if ([self.delegate respondsToSelector:@selector(xhLaunchAd:launchAdImageView:URL:)]) { // 使用三方框架或自己加载网络图片

[self.delegate xhLaunchAd:self launchAdImageView:adImageView URL:[NSURL URLWithString:configuration.imageNameOrURLString]];

}else{

if(!configuration.imageOption) configuration.imageOption = XHLaunchAdImageDefault;

XHWeakSelf

[adImageView xh_setImageWithURL:[NSURL URLWithString:configuration.imageNameOrURLString] placeholderImage:nil GIFImageCycleOnce:configuration.GIFImageCycleOnce options:configuration.imageOption GIFImageCycleOnceFinish:^{

//GIF不循环,播放完成

[[NSNotificationCenter defaultCenter] postNotificationName:XHLaunchAdGIFImageCycleOnceFinishNotification object:nil userInfo:@{@"imageNameOrURLString":configuration.imageNameOrURLString}];

} completed:^(UIImage *image,NSData *imageData,NSError *error,NSURL *url){

if(!error){

#pragma clang diagnostic push

#pragma clang diagnostic ignored"-Wdeprecated-declarations"

if ([weakSelf.delegate respondsToSelector:@selector(xhLaunchAd:imageDownLoadFinish:)]) {

[weakSelf.delegate xhLaunchAd:self imageDownLoadFinish:image];

}

#pragma clang diagnostic pop

if ([weakSelf.delegate respondsToSelector:@selector(xhLaunchAd:imageDownLoadFinish:imageData:)]) {

[weakSelf.delegate xhLaunchAd:self imageDownLoadFinish:image imageData:imageData];

}

}

}];

if(configuration.imageOption == XHLaunchAdImageCacheInBackground){

/** 缓存中未有 */

if(![XHLaunchAdCache checkImageInCacheWithURL:[NSURL URLWithString:configuration.imageNameOrURLString]]){

[self removeAndAnimateDefault]; return; /** 完成显示 */

}

}

}

}else{ // 本地图片

if(configuration.imageNameOrURLString.length){

NSData *data = XHDataWithFileName(configuration.imageNameOrURLString);

if(XHISGIFTypeWithData(data)){

FLAnimatedImage *image = [FLAnimatedImage animatedImageWithGIFData:data];

adImageView.animatedImage = image;

adImageView.image = nil;

__weak typeof(adImageView) w_adImageView = adImageView;

adImageView.loopCompletionBlock = ^(NSUInteger loopCountRemaining) {

if(configuration.GIFImageCycleOnce){

[w_adImageView stopAnimating];

XHLaunchAdLog(@"GIF不循环,播放完成");

[[NSNotificationCenter defaultCenter] postNotificationName:XHLaunchAdGIFImageCycleOnceFinishNotification object:@{@"imageNameOrURLString":configuration.imageNameOrURLString}];

}

};

}else{

adImageView.animatedImage = nil;

adImageView.image = [UIImage imageWithData:data];

}

#pragma clang diagnostic push

#pragma clang diagnostic ignored"-Wdeprecated-declarations"

if ([self.delegate respondsToSelector:@selector(xhLaunchAd:imageDownLoadFinish:)]) {

[self.delegate xhLaunchAd:self imageDownLoadFinish:[UIImage imageWithData:data]];

}

#pragma clang diagnostic pop

}else{

XHLaunchAdLog(@"未设置广告图片");

}

}

/** skipButton */

[self addSkipButtonForConfiguration:configuration];

[self startSkipDispathTimer];

/** customView */

if(configuration.subViews.count>0) [self addSubViews:configuration.subViews];

XHWeakSelf

adImageView.click = ^(CGPoint point) {

[weakSelf clickAndPoint:point];

};

}

疑问

1.XH中的window是怎么显示的？ 设置了UIWindowLevelStatusBar属性

window.windowLevel = UIWindowLevelStatusBar + 1;

创建的window不用添加到任何控件上，创建完后就自动添加到window上了，但要想优先显示windowLevel 必须大于等于当前的window level 才会展示在上层。 [[UIApplication sharedApplication] keyWindow]获取正在显示的UIWindow是极其不准确的 销毁window的正确方式： window.hidden = YES; window = nil; （注：iOS之后使用了SceneDelegate需要进行适配 https://www.jianshu.com/p/60bab1258efc）

自定义

1.用自己的方式加载图片

/**

如果你想用SDWebImage等框架加载网络广告图片,请实现此代理,注意:实现此方法后,图片缓存将不受XHLaunchAd管理

@param launchAd XHLaunchAd

@param launchAdImageView launchAdImageView

@param url 图片url

*/

-(void)xhLaunchAd:(XHLaunchAd *)launchAd launchAdImageView:(UIImageView *)launchAdImageView URL:(NSURL *)url;

实现该代理便能用我们自己的方式去加载图片，如使用YYWebImage去加载webp格式的图片。

思路

1.使用一个单例来加载广告页 2.创建一个配置类对象，设置所需的一些配置，如：图片地址、图片位置、倒计时类型等，并把这个配置类赋值给单例的相应属性 3.创建一个window，在该window上添加广告页

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