附上代码：
(这是vivo广告的代码)
//没有广告的时候
if(!this.ad)
{
this.ad = qg.createRewardedVideoAd({
posId:this.REWARDUNITID,
style:{}
})
}
//加载广告
this.ad && this.ad.load()
.catch((err)=>{
});
this.ad && this.ad.onLoad(()=>
{
var adshow = this.ad && this.ad.show();
adshow && adshow
.catch((err)=>{
fail&&fail();
})
})
//监听关闭
this.ad.onClose(res=>
{
if (res && res.isEnded) {
callback();
console.log("正常播放结束，可以下发游戏奖励");
} else {
fail&&fail();
console.log("播放中途退出，不下发游戏奖励");
}
});
//监听错误
this.ad.onError((err)=>
{
console.log("广告错误")
console.log(JSON.stringify(err));
if(err.errCode==-3)
{
qg.showToast({
message: "上次观看完视频，需要等待一分钟，请稍后再试"
});
}
})
第一次视频成功看完回调没有报错，第二次成功回调如果是查询节点啥的就会报错，错误代码是：
ERROR: Uncaught TypeError: Cannot read property ‘length’ of null, location: /data/user/0/com.vivo.hybrid/app_resource/com.suyu.baike.vivominigame/src/cocos2d-runtime.f5866.js:0:0
STACK:
[0]m@/data/user/0/com.vivo.hybrid/app_resource/com.suyu.baike.vivominigame/src/cocos2d-runtime.f5866.js:1
[1]getComponent@/data/user/0/com.vivo.hybrid/app_resource/com.suyu.baike.vivominigame/src/cocos2d-runtime.f5866.js:1
[2]showChaKanDaAn@/data/user/0/com.vivo.hybrid/app_resource/com.suyu.baike.vivominigame/src/project.5573b.js:1
[3]anonymous@/data/user/0/com.vivo.hybrid/app_resource/com.suyu.baike.vivominigame/src/project.5573b.js:1
[4]anonymous@/data/user/0/com.vivo.hybrid/app_resource/com.suyu.baike.vivominigame/src/project.5573b.js:1
[5]anonymous@(no filename):1
[6]bo@(no filename):1
[7]processInvokeCallback@(no filename):1
[8]Sn.processInvokeCallback.kn.(anonymous function)@(no filename):1
[9]anonymous@(no filename):1