в вашем файле AndroidManifest.xml настройте схему, хост и путь.
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme.NoActionBar">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<!--TODO Add sign-in redirect URI as intent filter-->
<!--This intent filter is an example for sign-in redirect URI: demoapp://demo.cognitoauth.com/signin-->
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data android:scheme="demoapp" android:host="demo.cognitoauth.com" android:path="/signin"/>
</intent-filter>
</activity>
</application>