That looks concise and clean there could be some arguments against it due to not being “human-readable” but I can promise that once you get used to the use of safe calls and let methods you’ll read it clearly with no effort. If we take the example we used in our last Kotlin article about Either: fun findEmployeeByName(name: String): Either ') Not always, we might have a findEmployee method in our service where we want to express the possibility of not finding the employee by using a nullable type. That’s definitely the best way to avoid having to deal with nulls in our language, although is this always possible? This is the way that they decided to achieve null-safety in Kotlin. Non-Nullable Types in Kotlinīy default Kotlin types are not nullable, what means that it’s impossible to assign null to them. Kotlin provides different mechanisms to help solve this problem. In this article you will learn how to handle nullable types in Kotlin correctly. Having to place null check conditions everywhere just to make our code null-safe is something that probably most of us have suffered quite often. Toast.makeText(applicationContext, 'Enter Your Name OR Click DECLINE', 'Registered $EnteredText', Toast.LENGTH_SHORT).show()ītOnClickListener(View.One of the most annoying aspects in writing code in Java is dealing with null elements. Import 7.app.AppCompatActivityĬlass PageTwoActivity : AppCompatActivity() ) Without the two buttons for PageTwoActivity

The Activity structure is as follows PageTwoActivity has its own XML file with two buttons attached. The error source is eluding us ! We have looked at a number of posts and tried a few with no results.

: findViewById(R.id.btnYES) must not be null We have created a custom alert dialog that was used in a Java project by converting it to Kotlin The error posted below

Kotlin assign if not null