---
description: >-
  Explaining the capabilities of screen tracking that supports knowing your
  users actions better while interacting with your Application.
---

# Screen

The `screen` call lets you record when a user views a screen of your app, along with any optional properties about the screen.&#x20;

Below is a complete sample of the `screen` API event:

For Android:

```
LemniskHelper lemniskClient = LemniskHelper.getInstance(getApplicationContext());

AttributeBuilder properties = new AttributeBuilder.Builder()
.addAttribute("key1", "value1")
.addAttribute("key2", "value2")
.addAttribute("key3", "value3")
.build();

AttributeBuilder otherIds = new AttributeBuilder.Builder()
.addAttribute("otherId", "otherId_value")
.build();

lemniskClient.screen("MainActivity", properties, otherIds
```

For iOS:

```swift
Lemnisk.shared.screen("home_screen", 
  properties: [
    "variation": "carousel",
    "buttons": 2
  ],
  otherIds: [
    "trackerId": "6791c47a-0178-47bc-8711-86a2c67b2255",
    "email":"john.doe@gmail.com",
    "phone":"9848012345"
  ])
```

For React Native:

```json
LemniskSdk.screen("home", {
  "variation": "carousel",
  "buttons": 2
 }, {
	"trackerId": "6791c47a-0178-47bc-8711-86a2c67b2255"
})
```

For Flutter:

```javascript
LemniskFlutter.screen("home", {
  "variation": "carousel",
  "buttons": 2
 }, {
	"trackerId": "6791c47a-0178-47bc-8711-86a2c67b2255"
})
```

Sample `screen` event payload:

```json
{
 "id": "viz_6139c51ee9662",
 "userId": "6791c47a-0178-47bc-8711-86a2c67b2255",
 "otherIds": {
  "trackerId": "6791c47a-0178-47bc-8711-86a2c67b2255"
 },
 "context": {
  "library": {
   "name": "ios sdk",
   "version": "0.01"
  },
  "app": {
   "name": "Insta Astro",
   "version": "545",
   "build": "3.0.1.545"
  },
  "device": {
   "id": "B5372DB0-C21E-11E4-8DFC-AA07A5B093DB",
   "advertisingId": "7A3CBEA0-BDF5-11E4-8DFC-AA07A5B093DB",
   "adTrackingEnabled": true,
   "manufacturer": "Apple",
   "model": "iPhone11",
   "type": "ios",
   "token": "ff15bc0c20c4aa6cd50854ff165fd265c838e5405bfeb9571066395b8c9da449"
  },
  "screen": {
   "width": 320,
   "height": 568,
   "density": 2
  },
  "userAgent": {
   "osType": "iOS",
   "osVersion": "14"
  },
  "ip": "108.0.78.21"
 },
 "name": "home",
 "messageId": "ajs-f8ca1e4de5024d9430b3928bd8ac6b96",
 "properties": {
  "variation": "carousel",
  "buttons": 2
 },
 "receivedAt": "2015-12-12T19:11:01.266Z",
 "sentAt": "2015-12-12T19:11:01.169Z",
 "timestamp": "2015-12-12T19:11:01.249Z",
 "type": "screen",
 "originalTimestamp": "2015-12-12T19:11:01.152Z",
 "writeKey": "aUL2rZghe5jHvjWh"
}

```
