feat: Migrate to v2 Embedding (#99)

## Changes

- Remove v1 Embedding Support
- Add more info about Android Testing to README.md

## Checklist

- [x] Have you added an explanation of what your changes do and why
you'd like us to include them?
- [x] Is there an existing issue for this PR?
  - resolve #97 
- [ ] Have the files been linted and formatted?
- [ ] Have the docs been updated to match the changes in the PR?
- [ ] Have the tests been updated to match the changes in the PR?
- [ ] Attached videos/screenshots demonstrating the fix/feature.
- [x] Have you run the tests locally to confirm they pass?

CHANGELOG.md

@@ -4,6 +4,7 @@
 
 * Breaking: Upgrade Gradle version.
 * Breaking: Upgrade Kotlin version.
+* Breaking: Remove v1 embedding support.
 
 ## 3.0.4
 

README.md

@@ -62,6 +62,18 @@ If you use the [SMS User Consent API](https://developers.google.com/identity/sms
 
 The `OTPInteractor.startListenForCode` method allows the application to start receiving verification codes from a specific phone number, specified by the `senderPhone` argument.
 
+You also can use Android Emulator to test the plugin. To do this, you need to send an SMS to the emulator with the following command:
+
+```bash
+adb emu sms send <senderPhone> <message>
+```
+E.g.:
+```bash
+adb emu sms send 900 "Your code is 12345. Do not share it with anyone."
+```
+
+Make sure `senderPhone` is the same as the one you specified in the `startListenForCode` method.
+
 ## Usage
 
 You should use `OTPInteractor` to interact with OTP.

android/src/main/kotlin/ru/surfstudio/otp_autofill/OTPPlugin.kt

@@ -19,7 +19,6 @@ import io.flutter.plugin.common.MethodChannel
 import io.flutter.plugin.common.MethodChannel.MethodCallHandler
 import io.flutter.plugin.common.MethodChannel.Result
 import io.flutter.plugin.common.PluginRegistry
-import io.flutter.plugin.common.PluginRegistry.Registrar
 
 /// Channel
 const val channelName: String = "otp_surfstudio"
@@ -53,20 +52,8 @@ class OTPPlugin : FlutterPlugin, MethodCallHandler, PluginRegistry.ActivityResul
         channel = MethodChannel(flutterPluginBinding.binaryMessenger, channelName)
         channel.setMethodCallHandler(this);
     }
-
-    companion object {
-        private var context: Context? = null
-        private var lastResult: Result? = null
-
-        @JvmStatic
-        fun registerWith(registrar: Registrar) {
-            context = registrar.context()
-            val channel = MethodChannel(registrar.messenger(), channelName)
-            val plugin = OTPPlugin()
-            channel.setMethodCallHandler(plugin)
-            registrar.addActivityResultListener(plugin)
-        }
-    }
+    private var context: Context? = null
+    private var lastResult: Result? = null
 
     override fun onMethodCall(@NonNull call: MethodCall, @NonNull result: Result) {
         when (call.method) {

example/android/app/src/main/AndroidManifest.xml

@@ -4,6 +4,7 @@
         android:label="test_otp_autofill"
         android:name="${applicationName}"
         android:icon="@mipmap/ic_launcher">
+        <meta-data android:name="flutterEmbedding" android:value="2"/>
         <activity
             android:name=".MainActivity"
             android:exported="true"