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handler'ı olarak kaydetmek.",{"key":136,"text":152},"Bir widget'ın layout constraint'lerini otomatik üretmek.",{"key":139,"text":154},"O state nesnesinin uygulama genelindeki lifecycle olaylarını gözlemlemesini sağlamak.",{"key":142,"text":156},"Widget'ın build metodunu bir arka plan isolate'inde çalıştırmak.","`WidgetsBindingObserver`, bir `State` nesnesinin `didChangeAppLifecycleState` gibi metotları override ederek lifecycle durum değişiklikleri dahil uygulama-geneli olayları almasını sağlayan bir mixin'dir.",{"id":159,"topic":9,"difficulty":129,"body":160,"options":161,"correct_key":136,"explanation":170},"019fa93e-4e53-70d1-9c0c-cfff7d01b9be","Flutter'da bir `MethodChannel` ne için kullanılır?",[162,164,166,168],{"key":133,"text":163},"Diskte kalıcı key-value tercihleri saklamak için.",{"key":136,"text":165},"Native kodu çağırıp bir sonuç almak.",{"key":139,"text":167},"Widget'ları doğrudan native view hiyerarşisine render etmek.",{"key":142,"text":169},"Dart kodunu çalışma zamanında native makine koduna derlemek için.","Bir `MethodChannel`, Dart kodunun native (iOS\u002FAndroid) taraftaki adlandırılmış bir metodu çağırmasını ve asenkron olarak tek bir sonuç almasını sağlar; temel Dart-native RPC mekanizmasıdır.",{"id":172,"topic":9,"difficulty":173,"body":174,"options":175,"correct_key":142,"explanation":184},"019fa93e-4e53-7796-be3f-7df33f57af9b",2,"Bir `MethodChannel`'ın genelde `\"com.example.app\u002Fbattery\"` gibi ad-alanlı bir string kullanmasının nedeni nedir?",[176,178,180,182],{"key":133,"text":177},"Aynı zamanda uygulamanın bundle identifier'ı olarak da kullanılması.",{"key":136,"text":179},"Channel'ın hangi native thread'de çalıştığını belirtmek.",{"key":139,"text":181},"Dart'ın tüm identifier'ların bir eğik çizgi içermesini zorunlu kılması.",{"key":142,"text":183},"Diğer plugin'lerin kullandığı isimlerle çakışmayı önlemek.","Channel adı, her iki tarafın da üzerinde anlaşması gereken sade bir string anahtardır; paket-tarzı bir önekle ad-alanlaması, ortak bir ad kullanan başka plugin'lerle kazara çakışmayı önler.",{"id":186,"topic":9,"difficulty":173,"body":187,"options":188,"correct_key":133,"explanation":197},"019fa93e-4e54-79d4-9d25-adccc063330e","```dart\nfinal channel = MethodChannel('samples.flutter.dev\u002Fbattery');\nfinal result = await channel.invokeMethod('getBatteryLevel');\n```\n`invokeMethod` çağırmak ne döndürür?",[189,191,193,195],{"key":133,"text":190},"Native taraf yanıt verdiğinde sonuçla tamamlanan bir `Future`.",{"key":136,"text":192},"Hiçbir şey; `invokeMethod` dönüş değeri olmayan ateşle-unut bir çağrıdır.",{"key":139,"text":194},"Pil seviyesini tekrar tekrar yayan bir `Stream`.",{"key":142,"text":196},"Sonucu senkron olarak, native kod bitene kadar çağıran isolate'i bloklayarak.","`invokeMethod` her zaman bir `Future` döndürür, çünkü çağrı asenkron olarak native koda geçer; bu yüzden senkron kullanılmak yerine `await` 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