Ex.No: 2 To develop an application that uses GUI Components with Fonts and Colors.

AIM:

To create an application that uses GUI Components with Fonts and Colors using Android Studio.

EQUIPMENTS REQUIRED:

Latest Version Android Studio

ALGORITHM:

Step 1: Open Android Stdio and then click on File -> New -> New project.

Step 2: Then type the Application name as HelloWorld and click Next.

Step 3: Then select the Minimum SDK as shown below and click Next.

Step 4: Then select the Empty Activity and click Next. Finally click Finish.

Step 5: Design layout in activity_main.xml.

Step 6: Display message give in MainActivity file.

Step 7: Save and run the application.

PROGRAM:

/*
Program to print the text “GUIcomponent”.
Developed by: Yogesh B
Registeration Number :212221220062
*/

Activity_xml File:

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://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">

<Button
    android:id="@+id/colbut"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginStart="128dp"
    android:layout_marginTop="120dp"
    android:backgroundTint="#FFC107"
    android:text="Change Color"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent" />

<Button
    android:id="@+id/fonbut"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginStart="132dp"
    android:layout_marginTop="48dp"
    android:backgroundTint="#FF5722"
    android:text="Change Font"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toBottomOf="@+id/colbut" />

<TextView
    android:id="@+id/textView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginStart="48dp"
    android:layout_marginTop="152dp"
    android:text="PRIME PLAYS"
    android:textSize="40dp"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toBottomOf="@+id/fonbut" />
</androidx.constraintlayout.widget.ConstraintLayout>

MainActivity.java File:

package com.example.guicomps;

import androidx.appcompat.app.AppCompatActivity;

import android.content.res.AssetManager;
import android.graphics.Color;
import android.graphics.Typeface;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

import java.io.IOException;
import java.io.InputStream;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

private TextView textView;
private Button colorButton;
private Button fontButton;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    textView = findViewById(R.id.textView);
    colorButton = findViewById(R.id.colbut);
    fontButton = findViewById(R.id.fonbut);

    colorButton.setOnClickListener(this);
    fontButton.setOnClickListener(this);
}

@Override
public void onClick(View view) {
    switch (view.getId()) {
        case R.id.colbut:
            changeTextColor();
            break;
        case R.id.fonbut:
            changeFont();
            break;
    }
}

private void changeTextColor() {
    int randomColor = generateRandomColor();
    textView.setTextColor(randomColor);
}

private void changeFont() {
    Typeface newFont = Typeface.createFromAsset(getAssets(), "font/pacifico.ttf");
    textView.setTypeface(newFont);
}

private int generateRandomColor() {
    int red = (int) (Math.random() * 256);
    int green = (int) (Math.random() * 256);
    int blue = (int) (Math.random() * 256);
    return Color.rgb(red, green, blue);
}
}

OUTPUT:

RESULT:

Thus a Simple Android Application that uses GUI Components with Fonts and Colors using Android Studio is developed and executed successfully.