How to fix "Call requires API level 26 (current min is 25) " error in Android

The best way to use LocalDateTime on a lower versions of Android is by desugaring (you must have Android Gradle plugin version 4.0 or higher). Just add the below lines to your app module gradle file:

Finally, add the ff. dependency to your dependencies block:

coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:1.0.10'

You need to use https://github.com/JakeWharton/ThreeTenABP to be able using LocalDateTime with Android API < 26.

Add the dependencies to your project (please follow the project README):

implementation 'com.jakewharton.threetenabp:threetenabp:1.2.1'

Then change your LocalDateTime import from:

import java.time.LocalDateTime;

to:

import org.threeten.bp.LocalDateTime;

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Update:

The library mentioned above is no longer the best way as mentioned in JakeWharton/ThreeTenABP README:

Attention: Development on this library is winding down. Please consider switching to Android Gradle plugin 4.0, java.time.*, and its core library desugaring feature in the coming months.

To use LocalDateTime in older API levels, use the desugaring feature from Gradle plugin 4.0: https://developer.android.com/studio/write/java8-support#library-desugaring