How to use Android SDK?

Table of Contents

Note: Installation instruction given below are applicable from Android SDK v2.3.3.

By using Android Archive Library (.aar)

Process# 1

  • Add to lib: Add both downloaded .aar files under lib folder.
  • Edit App’s gradle: Go to your application’s build.gradle file and add the following code in the dependencies section: 
implementation fileTree(dir: "libs", include: ["*.aar"])
implementation('io.socket:socket.io-client:1.0.0') {
     	// Exclude org.json provided by Android     
	exclude group: 'org.json', module: 'json'
}

implementation 'android.arch.lifecycle:extensions:1.1.1'

Process# 2

This is alternate to Process#1.

  • Go to Project root and create a new directory.
  • Put the following content into the build.gradle file within the new directory:
configurations.maybeCreate("default") 
artifacts.add("default", file('[nameOfTheAar].aar'))
  • Place both downloaded .aar files into this new directoy next to the build.gradle file.
  • Add the newly created directory to the settings.gradle file:
include(":path/new-directory")
  • Include the newly created library into your application.
implementation project(":path/new-directory", configuration = "default")

Note: Process# 2 is a better approach than Process# 1 as it creates a module to add .aar files.

Define Device Permissions

Define Permissions in AndroidManifest.xml as shown: 

<uses-permission android:name="android.permission.CAMERA"/>  
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE"/>
<uses-permission android:name="android.permission.RECORD_AUDIO"/>
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/> 
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/> 
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS"/>
<uses-permission android:name="android.permission.BLUETOOTH"/>
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>

Define Features

Define features in AndroidManifest.xml as shown:

<uses-feature android:name="android.hardware.camera"/> 
<uses-feature android:name="android.hardware.camera.autofocus"/>  
<uses-feature android:glEsVersion="0x00020000" android:required="true"/>

Error & Exceptions Handling

When Android SDK API call fails, it returns a JSON object through Callback as shown:

{
	"errorCode": Number,
	"msg": "String",
	"desc": "String"
}
  • errorCode – Number. Error Code.
  • msg – String. Error Message.
  • desc – String. Optional. A descriptive explanation of the error.

Index

Get Media Device Access →