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fix(app_installations,android): dispatch ID-change events on the main thread #18652

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Merged
SelaseKay merged 1 commit into from
Sep 7, 2026
+13 −2
Merged

fix(app_installations,android): dispatch ID-change events on the main thread #18652

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15 changes: 13 additions & 2 deletions ...er/plugins/firebase/installations/firebase_app_installations/TokenChannelStreamHandler.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -3,25 +3,36 @@
// found in the LICENSE file.
package io.flutter.plugins.firebase.installations.firebase_app_installations

import android.os.Handler
import android.os.Looper
import com.google.firebase.installations.FirebaseInstallations
import com.google.firebase.installations.internal.FidListener
import com.google.firebase.installations.internal.FidListenerHandle
import io.flutter.plugin.common.EventChannel

class TokenChannelStreamHandler(private val firebaseInstallations: FirebaseInstallations) :
EventChannel.StreamHandler {

private var listener: FidListener? = null
private var listenerHandle: FidListenerHandle? = null
private val mainHandler = Handler(Looper.getMainLooper())

override fun onListen(arguments: Any?, events: EventChannel.EventSink) {
listener = createTokenEventListener(events)
firebaseInstallations.registerFidListener(listener!!)
listenerHandle = firebaseInstallations.registerFidListener(listener!!)
}

override fun onCancel(arguments: Any?) {
listenerHandle?.unregister()
listenerHandle = null
listener = null
}

internal fun createTokenEventListener(events: EventChannel.EventSink): FidListener {
return FidListener { token -> events.success(mapOf("token" to token)) }
return FidListener { token ->
// FidListener is invoked on Firebase's blocking executor. EventSink
// must be used on the main thread.
mainHandler.post { events.success(mapOf("token" to token)) }
}
}
}
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