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Engineering Speaks: Cleaning up your messy Android code

by stacy

If you add only a few features to your code at the last moment and skip the refactoring which should be done regularly, it’s easy to break the code. It’s messy code!

Better-structured code can reduce the time required to add new features, and it also makes it easier to recruit additional people to your project. This tweet sums up code quality perfectly, and it was just what I happened to stumble upon.

This article aims to help beginners to Android development (read: Android programming) write code that is simpler and more useful. These are some of my learnings along the journey.

It would save time and be quicker to add a click listener to every view and implement the interface there.
Most of us begin by doing this. We eventually end up with a lot of click implementations as the project progresses.

Click listeners@Override publicvoid onClick(View View)

mButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) {

); If you want to get rid of this messy business, you should always have the class implement the click listener. This is often recommended.

General population Continue reading MainActivity Activities View. Use the OnClickListener object to override the onClick function.

@Priority over the public void

Click on (View View) to switch to (view.getId).()) case R.id.button: break; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;
as well as direct the listener to the view.

mButton.setOnClickListener(this); By doing so, all of the code pertaining to click events will be contained in a single location and will be simple to access.

Here’s a small excerpt of the communication concerning Activity
Modern Android applications use fragments extensively. These fragments can communicate with parent activity fragments at user-defined events. It is permissible to invoke the public method of the parent while passing an object (context), representing the parent. This process can be made easier and more organized by using interfaces. First, define an interface within your fragment. Next, set the listener for this interface.
This allows you to easily define the behavior of your app, so you don’t need to dig through the code each time the logic of a particular event changes.

Fragment to Activity communication

Although there is no set rule regarding the length of a function or method, it is my practice to ensure that each method does only one thing. This improves readability and makes class structuring much simpler. Although it can be difficult to predict the length of a method’s implementation, the key to ensuring that the process is reworked often is. If a method takes too long to complete or has multiple tasks, you can create a new method and remove the code from the current one. A single piece of code may be required for multiple aspects of a project. To avoid reusing your code, it is important to separate your methods.

Numbers and strings that work like magic
As the old saying goes, what gets done is lost. No one knows this better than those who have spent hours together trying to understand the code. Only to realize that it was the hardcoded value. This information will not be known by anyone else. This is why magic numbers, strings, and other input values are permanently written into the program.

Method Length

It is important to avoid magic numbers and strings. They can give you the illusion of magical properties, but they will ultimately come back to haunt. Constants should, at the minimum, be identified as members of the classes they are used whenever possible.

String data can be difficult to localize if the values are not hardcoded. You might now need to spend many days on something that was completed in a matter of hours. It is important to be cautious when you declare sizes in the layout files. You could end up with a mess!

Magic Numbers and Strings

ViewGroup Organizational Structure
This is a optimization-related problem, but it simplifies the view, so it’s a win/win.
You should use fewer nestings of views in your daily life. Additional costs could be incurred if you use multiple nested LinearLayouts. You will find additional information that will help you improve the structure of your plan.

ViewGroup Hierarchy

Code conventions are recommendations that provide programming guidelines for certain programming languages. These standards are sometimes called “best practice” in programming. These coding principles can be used to make code more readable and easier to maintain. Oracle’s explanation for why code conventions were essential is acceptable.

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