This approach will cause a crash if nameTextView is accessed before setContentView in an Activity. The simplest way to reference a view in a property is to use a nullable type. This post explores several approaches to handling properties that reference views: Ideally, an object’s properties would all be defined at the time it is created, but, because for Activities and Fragments object creation is separate from view loading, the properties intended to store views must start out uninitialized. This is a common practice because Android developers try to avoid repeated calls to findViewById. Consider, for example, storing a reference to a view in a property. Still, Kotlin has to live in the world where Java was king, and on Android the Activity lifecycle further complicates things. Less boilerplate, more expressive code and, yes, it is null safe – if you choose the path of avoiding torture. Many Android developers find refuge in Kotlin, a modern programming language that eliminates a lot of pain and suffering. Java does not protect you from the “billion dollar mistake” – the null pointer is lurking everywhere. “It’s so safe you won’t believe it!” you utter, but you are not sure anymore. “Is it safe?” the sadistic voice is relentless. “Is it safe?” forcing you to check whether your variables are null. “Is it safe?” the massive code base keeps asking you. You start the development sprint full of energy, but the ancient curse of Java bogs you down and you realize you are in for a marathon.
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