react-native-firebase/docs/core/config-default-app.md

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### Enable Database Persistence

Enabling database persistence (setPersistence) via JS for the default app is no longer supported. This breaking change was added in v3 to prevent several race condition issues around.

You can still however easily enable this natively for the default app instance:

#### Android

Add `FirebaseDatabase.getInstance().setPersistenceEnabled(true);` inside your `MainActivity.java` files `onCreate()` method.

#### iOS

Add `[FIRDatabase database].persistenceEnabled = YES;` after the `[FIRApp configure];` line inside your `AppDelegate.m` files `didFinishLaunchingWithOptions` method.
[docs] added misc new doc files plus related todo's 2017-08-26 05:48:26 +00:00			`<!-- TODO -->`

			`### Enable Database Persistence`

[docs] misc tweaks to docs 2017-10-04 20:18:20 +00:00			`Enabling database persistence (setPersistence) via JS for the default app is no longer supported. This breaking change was added in v3 to prevent several race condition issues around.`
[docs] persistence 2017-10-04 19:13:12 +00:00
			`You can still however easily enable this natively for the default app instance:`

			`#### Android`

[docs] persistence 2017-10-04 19:14:57 +00:00			Add `FirebaseDatabase.getInstance().setPersistenceEnabled(true);` inside your `MainActivity.java` files `onCreate()` method.
[docs] persistence 2017-10-04 19:13:12 +00:00
			`#### iOS`

[docs] persistence 2017-10-04 19:14:57 +00:00			Add `[FIRDatabase database].persistenceEnabled = YES;` after the `[FIRApp configure];` line inside your `AppDelegate.m` files `didFinishLaunchingWithOptions` method.