Volax

You need to download library sources: https://github.com/Philio/PinEntryView/tree/master/pinentry and include 'pinentry' project into application's build.gradle as a dependency: dependencies { .... compile project(':pinentry') } setOnPinEnteredListener is here on line 284: https://github.com/Philio/PinEntryView/blob/master/pinentry/src/main/java/me/philio/pinentry/PinEntryView.java...