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[cloud_messaging] Docs update : Fix Application.java example and add Kotlin example #3566

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[cloud_messaging] Docs update : Fix Application.java example and add Kotlin example #3566

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000ee2d
Fix pluginregistry cannot be converted flutterengine
lcsvcn Sep 16, 2020
af13afc
Add Kotlin help
lcsvcn Sep 16, 2020
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28 changes: 25 additions & 3 deletions packages/firebase_messaging/README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -73,7 +73,7 @@ By default background messaging is not enabled. To handle messages in the backgr

Note: you can find out what the latest version of the plugin is [here ("Cloud Messaging")](https://firebase.google.com/support/release-notes/android#latest_sdk_versions).

1. Add an `Application.java` class to your app in the same directory as your `MainActivity.java`. This is typically found in `<app-name>/android/app/src/main/java/<app-organization-path>/`.
1. Add an `Application.java` or `Application.kt` class to your app in the same directory as your `MainActivity.java` or `MainActivity.kt`. This is typically found in `<app-name>/android/app/src/main/java/<app-organization-path>/` or `<app-name>/android/app/src/main/kotlin/<app-organization-path>/`.

```java
package io.flutter.plugins.firebasemessagingexample;
Expand All @@ -83,6 +83,7 @@ By default background messaging is not enabled. To handle messages in the backgr
import io.flutter.plugin.common.PluginRegistry.PluginRegistrantCallback;
import io.flutter.plugins.GeneratedPluginRegistrant;
import io.flutter.plugins.firebasemessaging.FlutterFirebaseMessagingService;
import io.flutter.plugins.firebasemessaging.FirebaseMessagingPlugin;

public class Application extends FlutterApplication implements PluginRegistrantCallback {
@Override
Expand All @@ -93,12 +94,33 @@ By default background messaging is not enabled. To handle messages in the backgr

@Override
public void registerWith(PluginRegistry registry) {
GeneratedPluginRegistrant.registerWith(registry);
FirebaseMessagingPlugin.registerWith(registry.registrarFor("io.flutter.plugins.firebasemessaging.FirebaseMessagingPlugin"));
}
}
```

1. In `Application.java`, make sure to change `package io.flutter.plugins.firebasemessagingexample;` to your package's identifier. Your package's identifier should be something like `com.domain.myapplication`.
```kotlin
package io.flutter.plugins.firebasemessagingexample;

import io.flutter.app.FlutterApplication
import io.flutter.plugin.common.PluginRegistry
import io.flutter.plugin.common.PluginRegistry.PluginRegistrantCallback
import io.flutter.plugins.GeneratedPluginRegistrant
import io.flutter.plugins.firebasemessaging.FlutterFirebaseMessagingService
import io.flutter.plugins.firebasemessaging.FirebaseMessagingPlugin

class Application:FlutterApplication(), PluginRegistrantCallback {
override fun onCreate() {
super.onCreate()
FlutterFirebaseMessagingService.setPluginRegistrant(this)
}
override fun registerWith(registry:PluginRegistry) {
FirebaseMessagingPlugin.registerWith(registry.registrarFor("io.flutter.plugins.firebasemessaging.FirebaseMessagingPlugin"))
}
}
```

1. In `Application.java` or `Application.kt`, make sure to change `package io.flutter.plugins.firebasemessagingexample;` to your package's identifier. Your package's identifier should be something like `com.domain.myapplication`.

```java
package com.domain.myapplication;
Expand Down