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The Xamarin.Android Java.Interop layer measures latency when multiple managed threads invoke the same native Java method concurrently. Under low concurrency (1‑2 threads) marshalling adds ~0.2‑0.5 ms per call, but with eight or more threads the average latency rises to 2‑5 ms because of lock contention protecting the JNIEnv pointer and mono runtime GC safe‑p
The Android automatic backup API, available since API level 23, is designed to preserve app data across reinstalls and factory resets without user‑initiated configuration. In Xamarin.Android, apps targeting API 23+ participate automatically. However, the exact condition that initiates the first backup after deployment remains unspecified in the official docu
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