# Pre-requisite

## 1. **앱의 네이티브 권한 설정**

* `android>app>src>main>AndroidManifest.xml`

```jsx
<uses-permission android:name="android.permission.INTERNET" />
<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus" />
<uses-feature android:name="android.hardware.audio.output" />
<uses-feature android:name="android.hardware.microphone" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
<uses-permission android:name="android.permission.BLUETOOTH" android:maxSdkVersion="30" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" android:maxSdkVersion="30" />
<uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
```

* `ios>Runner>info.plist`

```jsx
<key>NSCameraUsageDescription</key>
<string>$(PRODUCT_NAME) Camera Usage!</string>
<key>NSMicrophoneUsageDescription</key>
<string>$(PRODUCT_NAME) Microphone Usage!</string>
```

## **2. 패키지 지원 설정**

옴니톡 React-native SDK는 react-native-webrtc 라이브러리에 의존하고 있습니다. 관련 지원 설정이 필요합니다.

* react-native-webrtc (`^111.0.1`)

  * `android> app> build.gradle` android section

  ```groovy
  compileOptions {
          sourceCompatibility JavaVersion.VERSION_1_8
          targetCompatibility JavaVersion.VERSION_11
      }
  ```

  * `ios > Podfile`

  ```jsx
    platform ≥ 12.0
  ```

## **3. 최소 지원 사양**

지원 아키텍처는 다음과 같습니다.

* Android: armeabi-v7a, arm64-v8a, x86, x86\_64
* iOS: arm64, x86\_64

안드로이드 지원 최소 compile sdk 버전은 다음과 같습니다.

* `android> app> build.gradle`

<pre class="language-xml"><code class="lang-xml"><strong>android {
</strong>	compileSdkVersion 33
}
</code></pre>

## 4. 앱 개발 공통 사항

### Step 0. SDK 객체 초기화

[콘솔](https://omnitalk.io/console/service/service-id)에서 발급받은 Service Id와 Service Key로 SDK를 초기화 합니다. 해당 정보는 노출되지 않도록 주의하여야 합니다. 초기화된 SDK 객체는 이후 모든 메서드 호출에 사용됩니다.&#x20;

Omnitalk SDK는 싱글톤 패턴으로 제공됩니다. 아래 방법으로 SDK를 초기화시키고 객체를 얻을 수 있습니다.

```tsx
import Omnitalk from 'omnitalk-rn-sdk';
const SERVICE_ID = '발급받은 service id';
const SERVICE_KEY = '발급받은 service key';  

Omnitalk.sdkInit(SERVICE_ID, SERVICE_KEY);
const sdk = Omnitalk.getInstance();
```


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