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developer-roadmap/roadmaps/android/content/observer-pattern@N_auRfGKkeIIc-qiHLkR_.md

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Observer Pattern

The Observer pattern defines a one-to-many dependency where multiple observers are notified automatically when a subject changes state. In Android, this pattern is the foundation of reactive data streams implemented through LiveData, Kotlin Flow, RxJava, and RxKotlin.

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