// 加载广告
ZJNativeExpressAd.loadAd(this, posId, 1, object : ZJNativeExpressAdLoadListener {
    
    override fun onError(code: Int, msg: String) {
        Log.e("ZJNativeExpressAd", "信息流加载出错$code-$msg")
    }

    override fun onAdLoaded(adList: List<ZJNativeExpressAd>) {
        // 信息流广告加载成功，配置交互回调
        adList[0].setInteractionListener(this@NativeExpressActivity)
        // SDK 渲染
        adList[0].showAd(this@MainActivity, this.container)
    }

})

 private fun loadMore() {
    var widthDP = 0
    if (recycler.getWidth() > 0) {
        widthDP = UIUtil.getViewWidthDP(recycler)
        // Linear / Grid
        widthDP = if (isLinearLayout) widthDP else widthDP / 2
    }
    ZJNativeExpressAd.loadAd(
        this,
        DataCenter.PosId.NATIVE_EXPRESS,
        3,
        widthDP,
        0,
        object : ZJNativeExpressAdLoadListener {
                
            /**
             * 加载出错
             *
             * @param code 错误码
             * @param msg  错误信息
             */
            override fun onError(code: Int, msg: String) {
                if (recycler != null) {
                    recycler.setLoadingError()
                }
                Toast.makeText(
                    this@NativeExpressListActivity,
                    "广告数据请求失败: $code-$msg", Toast.LENGTH_SHORT
                ).show()
            }

            /**
             * 加载成功
             *
             * @param adList 广告列表
             */
            override fun onAdLoaded(adList: List<ZJNativeExpressAd?>) {
                if (recycler == null) {
                    // 当前的页面已经被销毁，后续不需要再进行其他操作
                    return
                }
                recycler.setLoadingFinish()
                if (adList.isEmpty()) {
                    Toast.makeText(
                        this@NativeExpressListActivity,
                        "加载失败",
                        Toast.LENGTH_SHORT
                    ).show()
                    return
                }
                val newData: MutableList<ZJNativeExpressAd?> = ArrayList()
                val loadCount = 15 // 模拟正常数据
                for (i in 0 until loadCount) {
                    newData.add(null)
                }
                for (ad in adList) {
                    if (ad == null) {
                        continue
                    }
                    // 插入到数据中
                    newData.add(Random().nextInt(newData.size - 1), ad)
                }
                val isStop: Boolean = adapter.addData(newData)
                if (isStop) {
                    recycler.onStop()
                }
            }
                
        })
}

fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
    if (holder is AdViewHolder) {
        (holder as AdViewHolder).container.removeAllViews()
        val ad: ZJNativeExpressAd = adList.get(position)
        // 配置回调
        ad.setInteractionListener(object : ZJNativeExpressAdInteractionListener {

            /**
             * 展示失败
             *
             * @param code 错误码
             * @param msg  错误信息
             */
            override fun onNativeExpressAdShowError(code: Int, msg: String) {
                Toast.makeText(activity, "展示出错: $code-$msg", Toast.LENGTH_SHORT).show()
            }

            /**
             * 渲染成功
             * 仅在调用render方法后回调，调用showAd方法时不会回调渲染成功
             * @param adView 广告的View，需要手动添加到容器中
             */
            override fun onNativeExpressAdRenderSuccess(adView: View) {
                Toast.makeText(activity, "渲染成功", Toast.LENGTH_SHORT).show()
                if (adView != null) {
                    (holder as AdViewHolder).container.addView(adView)
                }
            }

            /**
             * 展示成功
             */
            override fun onNativeExpressAdShow() {
                Toast.makeText(activity, "广告展示", Toast.LENGTH_SHORT).show()
            }

            /**
             * 点击
             */
            override fun onNativeExpressAdClick() {
                Toast.makeText(activity, "广告点击", Toast.LENGTH_SHORT).show()
            }

            /**
             * 关闭，部分广告不支持
             */
            override fun onNativeExpressAdClose() {
                Toast.makeText(activity, "广告关闭", Toast.LENGTH_SHORT).show()
                val pos = holder.position
                adList.remove(pos)
                notifyItemRemoved(pos)
            }

        })
        // 手动渲染广告
        ad.render(activity)
    }
}