2020-06-10 00:08:19 -07:00
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[zcash-android-wallet-sdk](../../index.md) / [cash.z.ecc.android.sdk.data](../index.md) / [SdkSynchronizer](index.md) / [isStale](./is-stale.md)
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2019-03-28 23:31:25 -07:00
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# isStale
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`suspend fun isStale(): `[`Boolean`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html)
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Overrides [Synchronizer.isStale](../-synchronizer/is-stale.md)
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2019-03-30 09:22:20 -07:00
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A flag to indicate that this Synchronizer is significantly out of sync with it's server. This is determined by
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the delta between the current block height reported by the server and the latest block we have stored in cache.
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Whenever this delta is greater than the [staleTolerance](#), this function returns true. This is intended for
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showing progress indicators when the user returns to the app after having not used it for a long period.
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Typically, this means the user may have to wait for downloading to occur and the current balance and transaction
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information cannot be trusted as 100% accurate.
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2019-03-28 23:31:25 -07:00
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**Return**
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true when the local data is significantly out of sync with the remote server and the app data is stale.
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