As one of the most popular development languages today, Kotlin has become the de facto language when developing Android apps. https://bit.ly/3fQqqES

1. By AppsDevPro
TOP 10 TIPS FOR
DEVELOPING
ANDROID APPS
USING KOTLIN
AppsDevPro

2. Overview :
As one of the most popular development languages today, Kotlin has
become the de facto language when developing Android apps. Because of
its relative ease of use compared to Java, it’s becoming more and more
important to learn Kotlin as an Android developer.
Developed by JetBrains, Kotlin is a programming language that can be
used to develop Android apps and software for the JVM, the browser, and
server-side applications. It was developed in 2011 by JetBrains, which has
its main headquarters in Prague. Kotlin offers object-oriented features,
functional programming capabilities, and high-level features like data
classes or delegated properties.

3. Tip #1 - Save Memory And Time With Lazy
Load
One of the most common pitfalls in Android app development is memory usage. It's not
uncommon to see apps take over 2GB of RAM, leading to crashes and other performance
issues.
To reduce these risks, it's important to use a technique called Lazy Loading. This means that
only the UI elements that are on-screen or need to be updated will be loaded in memory
rather than all at once. This technique can save you a lot of time and memory!

4. Tip #2 - Reduce the Overall Lines of Code With
Lambdas
Lambdas are an important feature of Kotlin that offers many advantages over Java. One of
the most valuable benefits is how it can reduce the number of lines required to perform a
task.
If you're working with code containing some lambda expressions and want to know what they
do, you can use IntelliJ's built-in refactoring tool Replace Lambda to search and replace all
occurrences at once.

5. Tip #3 - Check Nullable Properties Using “Let”
One of the things you will find in the Kotlin language is Let, which allows you to handle
nullable properties without reverting to any Java code.
Nullable properties are one of the most difficult parts of a class or interface to manage, as
they can be frustrating to use and understand. Using Let ensures that null values are handled
properly and helps define what should happen when it comes across a null value.

6. Tip #4 - Support Old Devices
Support Old Devices One of the great features of Kotlin is its ability to compile down to Java
bytecode. Any app written in Kotlin will work on any device running Java. This might not seem
like a huge selling point, but it can be if you have an app that has a lot of users on devices
with older versions of Android.
To ensure that your app is compatible with old devices, ensure you are using the latest
version of the Android SDK and use all available libraries to target as many devices as
possible.

7. Tip #5 - Null Safety & Smart Casts
Null Safety is a way to access objects that may or may not exist safely. Smart casts allow you
to safely cast an object without triggering a runtime exception if the object doesn't exist.
Let's look at how these two features can help us write better, more robust code.
It looks simple enough, but what happens when we have null values? If the variable contains
a null value, then this will throw a runtime exception. We could just make sure our variable
never contains null values by always assigning it from another source like getId().
Still, we're just back where we started with trying to be careful about our data types and
ensuring they don't contain null values! In reality, nullable variables are common in any
programming language, and handling them properly can be difficult. The good news is Kotlin
has a few features which solve this problem beautifully!

8. Tip #6 - Swap Properties With Just One Line of
Code
Swapping properties with just one line of code is a great way to make your code more
concise and readable. With this technique, you can swap the position of two properties in
one statement. Let's say you have an object where the first property is a list of students and
the second property is a class name. You can swap them in one line of code, like this:
students = students

9. Tip #7 - Use Custom Getters and Setters
One way to get the most out of your data classes is to use custom getters and setters.
Custom getters and setters allow you to modify the return type and parameters of a
property's getter and setter methods, respectively. Getters allow you to filter data before it
is returned, while setters can be used to validate input values before setting them on the
class property. The following code snippet shows an example of how this might look in
practice: class ExampleClass { private val someNumber = 123456 fun
setSomeNumber(newValue: Int) { if (newValue
In addition to defining custom getters and setters that suit the needs of the app being
developed, it’s also possible to define default values for properties by specifying what
happens when a value isn’t provided or assigned during initialization or by assigning a value
in each constructor parameter list. A good example of this would be when using Serializable
data classes where there may not always be a value specified at construction time.

10. Tip #8 - Convert Java Code To Kotlin
Kotlin is a modern programming language that makes programming more productive and
fun. Kotlin can run on the Java Virtual Machine (JVM) and can be used to create libraries or
extensions to existing Java projects, though not to replace Java. You can convert your Java
code to Kotlin in two ways: using an IDE such as Eclipse, IntelliJ, or Android Studio or via a
Gradle plugin. The latter option also provides the benefit of converting only parts of your
codebase rather than all of it simultaneously.

11. Tip #9 - Make Validation Easier With An In-
Built
Kotlin has an in-built validation library that can be used to make the validation task easier. It
is built on top of JSR 380, ensuring that the developers know all the validations and have
complete control over them. For example, if you want to validate a password, you would use
a password string and pass it to Validation.isValid(), which will return true or false depending
on whether or not it is valid.

12. Tip #10 – Make Working With A Team Easier
With Collection Filters
Developers often work on more than one project at a time, and keeping track of all the
variables in each app can be difficult. Collection filters make it easy to filter a collection
according to certain conditions and return only the data you need. It's important not to get
overwhelmed by the sheer number of options available with this feature. You'll have an
easier time picking out what works best if you first decide which types of data you need from
your database before looking through the various possibilities.

13. Conclusion
We hope these tips will help you find the best way to
leverage Kotlin in your next Android project. If you're
still unsure about how to incorporate Kotlin into your
app, plenty of online resources can help. Hire kotlin
developers in India to help you build your app. They
will have the skills and knowledge to ensure that the
app is built efficiently and with optimal quality.

14. Thank you!
Feel free to approach us if you
have any questions.

15. AppsDevPro
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