This is the developer guide for Chat SDK v1. The new Chat SDK v2 for Android is now available and is the recommended version to integrate Chat into your mobile app.

The following memory usage and footprint information was measured when using our demo apps. We've based our tests off of Nexus 5 (codenamed Hammerhead) device.


The footprint will be smaller if your app and the SDK share libraries. For example, the footprint is 0.5MiB if you are already using Android support libraries that the SDK uses. The footprint is 2.1MiB if your app and the SDK have no shared libraries.

This footprint can be reduced further with Proguard.

Memory Usage

Component Approximate Memory Usage (MB)
Start chat 2.0
Chat 20 messages 3.9
Download 1 screenshot attachment 7.9
Download 2 screenshot attachments 12.4
Upload 1 screenshot attachment 7.4
Upload 2 screenshot attachments 11.9
Upload camera photo 25.8

Method count

1800 (without dependencies) 4500 (with dependencies, except Android Support Library)

65K method limit

Through the specification of Dalivik Executable (DEX) files the total number of referenced methods is limited to 65.536. As an app grows, it is possible that the method count exceeds this limitation. Allow multidex in your project build file to avoid the 65K limit.

android {
  compileSdkVersion 24
  buildToolsVersion "24.0.0"

  defaultConfig {
    minSdkVersion 10
    targetSdkVersion 24

    // Enabling multidex support.
    multiDexEnabled true

dependencies {
  compile ''

More details can be found on the official Android developer page.