> For the complete documentation index, see [llms.txt](https://intowow.gitbook.io/crystalexpress-documentation-v3-x/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://intowow.gitbook.io/crystalexpress-documentation-v3-x/android-sdk/api-reference/ceinfeedhelper.md). # CEInFeedHelper `CEInFeedHelper` is the class that simplifies in-feed integration of Card Ad and Native Ad. | Public construct | | ---------------- | |

CEInFeedHelper(Context context, String channelName, boolean isDebug)

Create inFeedHelper object

| | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Public methods | | | -------------- | - | | void |

setAdSource(CEIFAdSource adSource)

set Ad source by your Ad format to CEInFeedHelper

| | ---- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | void |

onScrollStateChanged(int state)

check if the feed is idle or scrolling

onScroll(int visiblePos, int visibleItems, int totalChildView)

check the scroll state

getAdView(int position)

request Ad view from CEInFeedHelper

| | ---------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | void |

setAdEventListener(CEIFHelperAdEventListener listener)

set Ad event listener to receive Ad status

isAd(int position)

check if this position is Ad

| | ------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------- | | boolean |

isAd(View view)

check if this view is Ad

| | ------- | --------------------------------------------------------------------------------------------------------------------------------------------------------- | | synchronized void |

reset()

reset the Ad cache to request new Ad when you want to reload the dataset

| | ----------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | void |

setItemCount(int originalCount)

set the number of original in-feed items into CEInFeedHelper

getAdjustedCount(int originalCount)

get the number of current in-feed items

getOriginalPosition(int position)

get the item's original position when there are Ad items in the view

getAdjustedPosition(final int originalPosition)

get the item's adjusted position when there are no Ad items in the view

getAdData(int position)

request Ad object from CEInFeedHelper

| | ------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | int |

getViewTypeCount()

always return 2, because there are 2 type of items, normal ones and Ads

| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ## setAdSource void setAdSource(CEIFAdSource adSource) set Ad source by your Ad format to CEInFeedHelper | Parameter | | | --------- | ------------------------------------ | | adSource | CEIFAdSource: In-feed Ad source info | ## onScrollStateChanged void onScrollStateChanged(int state) check if the feed is idle or scrolling | Parameter | | | --------- | ----------------------------- | | state | int: the current scroll state | ## onScroll void onScroll(int visiblePos, int visibleItems, int totalChildView) check the scroll state | Parameter | | | -------------- | -------------------------------------------- | | visiblePos | int: the index of the first visible cell | | visibleItems | int: the number of visible cells | | totalChildView | int: the number of items in the list adapter | ## getAdView CEIFAdView getAdView(int position) request Ad view from CEInFeedHelper if you don't want to use CEIFAdapter/CEIFRecyclerViewAdapter | Parameter | | | --------- | ---------------------------------------- | | position | int: the position of the in-feed content | ## setAdEventListener void setAdEventListener(CEIFHelperAdEventListener listener) set Ad event listener to receive Ad status | Parameter | | | --------- | ------------------------------------------------------------- | | listener | CEIFHelperAdEventListener: the listener for ad event callback | ```java mInFeedHelper.setAdEventListener(new CEInFeedHelper.CEIFHelperAdEventListener() { @Override public void onAdClicked(int index, Object ad) { } @Override public void onAdImpression(int index, Object ad) { } @Override public void onAdMute(int index, Object ad) { } @Override public void onAdUnmute(int index, Object ad) { } @Override public void onAdVideoStart(int index, Object ad) { } @Override public void onAdVideoEnd(int index, Object ad) { } @Override public void onAdVideoProgress(int index, Object ad, int totalDuration, int currentPosition) { } }); ``` ## isAd boolean isAd(int position) check if this position is Ad | Parameter | | | --------- | --------------------------- | | position | int: the Dataset's position | ## isAd boolean isAd(View view) check if this view is Ad | Parameter | | | --------- | ---- | | view | View | ## reset synchronized void reset() reset the Ad cache to request new Ad when you want to reload the dataset. To be more specific, you can call this API when users pull down to refresh the in-feed page. ## setItemCount void setItemCount(int originalCount) set the number of original in-feed items into CEInFeedHelper | Parameter | | | ------------- | ----------------------------------------- | | originalCount | int: the number of original in-feed items | ## getAdjustedCount int getAdjustedCount(int originalCount) get the number of current in-feed items | Parameter | | | ------------- | ------------------------------------- | | originalCount | int: number of original in-feed items | ## getOriginalPosition int getOriginalPosition(int position) get the item's original position when there are Ad items in the view | Parameter | | | --------- | ---------------------------------------- | | position | int: the in-feed item's current position | ## getAdjustedPosition int getAdjustedPosition(final int originalPosition) | Parameter | | | ---------------- | ----------------------------------------- | | originalPosition | int: the in-feed's item original position | ## getAdData Object getAdData(int position) request Ad object from CEInFeedHelper | Parameter | | | --------- | --------------------------- | | position | int: the Ad item's position | ## getViewTypeCount int getViewTypeCount() *\*\**always return 2, because there are 2 type of items, normal ones and Ads