Enable sign-in with web UI

1? Do you want to use the default authentication and security configuration? 
2    `Default configuration with Social Provider (Federation)`
3? How do you want users to be able to sign in? 
4    `Username`
5? Do you want to configure advanced settings? 
6    `No, I am done.`
7? What domain name prefix you want us to create for you? 
8    `(default)`
9? Enter your redirect signin URI: 
10    `myapp://`
11? Do you want to add another redirect signin URI 
12    `No`
13? Enter your redirect signout URI: 
14    `myapp://`
15? Do you want to add another redirect signout URI 
16    `No`
17? Select the social providers you want to configure for your user pool: 
18    `<hit enter>`

1<queries>
2  <intent>
3      <action android:name=
4          "android.support.customtabs.action.CustomTabsService" />
5  </intent>
6</queries>
7<application>
8  ...
9  <activity
10      android:name="com.amplifyframework.auth.cognito.activities.HostedUIRedirectActivity"
11      android:exported="true">
12      <intent-filter>
13          <action android:name="android.intent.action.VIEW" />
14          <category android:name="android.intent.category.DEFAULT" />
15          <category android:name="android.intent.category.BROWSABLE" />
16          <data android:scheme="myapp" />
17      </intent-filter>
18  </activity>
19  ...
20</application>

1<plist version="1.0">
2
3     <dict>
4     <!-- YOUR OTHER PLIST ENTRIES HERE -->
5
6     <!-- ADD AN ENTRY TO CFBundleURLTypes for Cognito Auth -->
7     <!-- IF YOU DO NOT HAVE CFBundleURLTypes, YOU CAN COPY THE WHOLE BLOCK BELOW -->
8     <key>CFBundleURLTypes</key>
9     <array>
10         <dict>
11             <key>CFBundleURLSchemes</key>
12             <array>
13                 <string>myapp</string>
14             </array>
15         </dict>
16     </array>
17
18     <!-- ... -->
19     </dict>

1Future<void> signInWithWebUI() async {
2  try {
3    final result = await Amplify.Auth.signInWithWebUI();
4    print('Result: $result');
5  } on AuthException catch (e) {
6    print(e.message);
7  }
8}

1Future<void> signInWithWebUIProvider() async {
2  try {
3    final result = await Amplify.Auth.signInWithWebUI(provider:  AuthProvider.google);
4    print('Result: $result');
5  } on AuthException catch (e) {
6    print(e.message);
7  }
8}

1Future<void> signInWithWebUIAndPrivateSession() async {
2  await Amplify.Auth.signInWithWebUI(
3    options: const CognitoSignInWithWebUIOptions(
4      isPreferPrivateSession: preferPrivateSession
5    )
6  );
7}