Note: Create button for colors and fonts while clicking color or font button should change
To create an application that uses GUI Components with Fonts and Colors using Android Studio.
Latest Version Android Studio
- Start a new project in Android Studio.
- Design a simple layout(.xml File).
- Inside MainActivity.java , create the button function
- Create button for colors and fonts while clicking color or font button should change the color and font.
- Display corresponding changes in application.
Program to print the text “GUIcomponent”.
Developed by:Bala Sathiesh CS
Registeration Number :212222040022
Mainactivity.java
package com.example.guicomponent;
import android.graphics.Color;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity
{
int ch=1;
float font=30;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final TextView t= (TextView) findViewById(R.id.t1);
Button b1 = (Button) findViewById(R.id.b1);
b1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
t.setTextSize(font);
font = font + 5;
if (font == 50)
font = 30;
}
});
Button b2= (Button) findViewById(R.id.button2);
b2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
switch (ch) {
case 1:
t.setTextColor(Color.RED);
break;
case 2:
t.setTextColor(Color.GREEN);
break;
case 3:
t.setTextColor(Color.BLUE);
break;
case 4:
t.setTextColor(Color.CYAN);
break;
case 5:
t.setTextColor(Color.YELLOW);
break;
case 6:
t.setTextColor(Color.MAGENTA);
break;
}
ch++;
if (ch == 7)
ch = 1;
}
});
}
}activity_main.xml
<?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">
<TextView
android:id="@+id/t1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
android:textSize="16sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.464"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.251" />
<Button
android:id="@+id/b1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="168dp"
android:text="Change Fond Size"
android:textSize="14sp"
app:layout_constraintBottom_toTopOf="@+id/button2"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" />
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="340dp"
android:text="Change Colour"
android:textSize="16sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
Thus a Simple Android Application that uses GUI Components with Fonts and Colors using Android Studio is developed and executed successfully.
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