How to Make Your First App in Java Sequence # 2

 How to Make Your First App in Java Sequence # 2

Begin With Android Studio

To make an Android application, you really want an Integrated Development Environment (IDE), and Android Studio is the authority IDE for making Android Apps.

Install Android Studio

To install and begin with Android Studio, look at my post on How to Use Android Studio.

Since Android Studio is prepared to utilize, you can begin by making your first undertaking. Give your venture a name and give it a novel bundle name as well. Then, at that point, pick the base SDK you need to help with your application.

As it says underneath the Minimum SDK bar, with every API level, the elements that you can use in your application increment. In any case, your application will run on less gadgets. The Create New Project exchange incorporates an assessor for the level of gadgets your application will run on.

You will then, at that point, be approached to choose the design of your application. We should pick Empty Activity so we have a ton of space to try and learn.

When you give your action a name-we should name it Main Activity for this instructional exercise Android Studio will pause for a minute to make your first task. Presently, you have before you the fundamental code manager where you will actually want to compose the code for your application.

The enormous area on your right is the Editor Window, where you compose the code of your application. To your left side and beneath that are the apparatus windows. These let you effectively explore and deal with a particular assignment of your task, for instance perusing records or review investigating data.

The two bars that you see on top are the Toolbar, which permits you to perform normal errands in Android Studio, such as building, running, and troubleshooting applications, and the Navigation Bar, which allows you to explore through the task and the at present opened class document.

Require a couple of moments to concentrate on the screen. It will seem OK once you begin making an Android application with Java.

Since you comprehend the nuts and bolts of Android Studio, the time has come to at last make your first Java Android application.

JAVA Activity:

Presently, assuming you take a gander at the left half of your screen, you will see two organizers. One of them holds your application's code and is named after the title of your undertaking. For this situation, it would be MyFirstAndroidApp. The other organizer contains Gradle Scripts, which is a free device Android Studio uses to transform your application's code into .apk documents.

To begin with, you snap to open the MyFirstAndroidApp organizer and access the code of your application. Then, at that point, you click on the application organizer. This has three envelopes which hold various components of your task: shows, java, and res.

To begin, select res, which contains a record called activity_main.xml. Tapping on this document will permit you to get to the format of your primary Activity. On screen, it will resemble this:




XML Layout Coding:

<?xml version="1.0" encoding="utf-8"?>

<android.support.constraint.ConstraintLayout xmlns:android="https://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context=".MainActivity">

 

    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="MyFirstAndroidApp"

        android:textStyle="bold"

        app:layout_constraintBottom_toBottomOf="parent"

        app:layout_constraintLeft_toLeftOf="parent"

        app:layout_constraintRight_toRightOf="parent"

        app:layout_constraintTop_toTopOf="parent" />

 

</android.support.constraint.ConstraintLayout>








JAVA (MainActivity) Coding:




public class MainActivity extends AppCompatActivity {

     

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

 

  

    }

}