Delegate

示例代码如下：

#import "ViewController.h"
#import <VungleSDK/VungleSDK.h>

@interface ViewController ()

@end

@implementation ViewController
- (void)viewDidLoad {
    [super viewDidLoad];
    NSError* error;
    VungleSDK* sdk = [VungleSDK sharedSDK];
    sdk.delegate=self;
    [sdk startWithAppId:@"YOUR_APP_ID" error:&error];

}
// 实现的回调
- (void)vungleSDKDidInitialize{
// 初始化成功
}

- (void)vungleSDKFailedToInitializeWithError:(NSError *)error{
// 初始化失败
}

- (void)vungleAdPlayabilityUpdate:(BOOL)isAdPlayable placementID:(nullable NSString *)placementID error:(nullable NSError *)error{
// 缓存广告成功或失败
}

- (void)vungleWillShowAdForPlacementID:(nullable NSString *)placementID{
// 广告即将开始播放
}

- (void)vungleDidShowAdForPlacementID:(nullable NSString *)placementID{
    // 广告开始播放
}

- (void)vungleTrackClickForPlacementID:(nullable NSString *)placementID{
    // 广告被点击
}

- (void)vungleWillLeaveApplicationForPlacementID:(nullable NSString *)placementID{
    // 离开应用，例如用户点击广告，跳转商店
}

- (void)vungleRewardUserForPlacementID:(nullable NSString *)placementID{
    // 使用与奖励广告位，当用户观看80%以上时触发
}

- (void)vungleWillCloseAdForPlacementID:(nonnull NSString *)placementID{
    // 用户点击关闭按钮，即将关闭广告
}

- (void)vungleDidCloseAdForPlacementID:(nonnull NSString *)placementID{
    // 用户点击关闭按钮，关闭广告
}

- (void)vungleAdViewedForPlacement:(NSString *)placementID{
    // 用户观看了一帧广告
}