Java

1. Write a program to place Name, Age, Mobile number linearly (vertical) on the display screen using Linear layout.

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical"

android:padding="16dp">

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Name:"

android:textSize="16sp"

android:layout_marginBottom="8dp"/>

<EditText

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:id="@+id/editText_name"

android:inputType="textPersonName"

android:hint="Enter your name"/>

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Age:"

android:textSize="16sp"

android:layout_marginTop="16dp"

android:layout_marginBottom="8dp"/>

<EditText

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:id="@+id/editText_age"

android:inputType="number"

android:hint="Enter your age"/>

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Mobile no.:"

android:textSize="16sp"

android:layout_marginTop="16dp"

android:layout_marginBottom="8dp"/>

<EditText

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:id="@+id/editText_mobile"

android:inputType="phone"

android:hint="Enter your mobile number"/>

</LinearLayout>

2. Write a program to place Name, Age, Mobile number linearly(vertical) on the display screen using Absolute layout.

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

<AbsoluteLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent">

<TextView

android:id="@+id/nameTextView"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_x="30dp"

android:layout_y="55dp"

android:text="Name:"

android:textSize="20sp" />

<EditText

android:id="@+id/nameEditText"

android:layout_width="200dp"

android:layout_height="wrap_content"

android:inputType="text"

android:layout_x="150dp"

android:layout_y="50dp"/>

<TextView

android:id="@+id/ageTextView"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_x="34dp"

android:layout_y="100dp"

android:text="Age:"

android:textSize="20sp" />

<EditText

android:id="@+id/ageEditText"

android:layout_width="200dp"

android:layout_height="wrap_content"

android:inputType="number"

android:layout_x="150dp"

android:layout_y="100dp"/>

<TextView

android:id="@+id/mobileTextView"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_x="34dp"

android:layout_y="162dp"

android:text="Mobile no:"

android:textSize="20sp" />

<EditText

android:id="@+id/mobileEditText"

android:layout_width="200dp"

android:layout_height="wrap_content"

android:inputType="phone"

android:layout_x="150dp"

android:layout_y="150dp"/>

</AbsoluteLayout>

3. Write a program to display 5 students basic information in a table form using Table layout.

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

<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent">

<TextView

android:text="Name"

android:textSize="18sp"

android:padding="10dp"

android:textStyle="bold"/>

<TextView

android:text="Age"

android:textSize="18sp"

android:padding="10dp"

android:textStyle="bold"/>

<TextView

android:text="Mobile Number"

android:textSize="18sp"

android:padding="10dp"

android:textStyle="bold"/>

</TableRow>

<TextView

android:text="Chirag"

android:textSize="16sp"

android:padding="10dp"/>

<TextView

android:text="20"

android:textSize="16sp"

android:padding="10dp"/>

<TextView

android:text="9873498738"

android:textSize="16sp"

android:padding="10dp"/>

</TableRow>

<TextView

android:text="Shubham"

android:textSize="16sp"

android:padding="10dp"/>

<TextView

android:text="22"

android:textSize="16sp"

android:padding="10dp"/>

<TextView

android:text="8987668756"

android:textSize="16sp"

android:padding="10dp"/>

</TableRow>

<TextView

android:text="Ritik"

android:textSize="16sp"

android:padding="10dp"/>

<TextView

android:text="19"

android:textSize="16sp"

android:padding="10dp"/>

<TextView

android:text="0987409848"

android:textSize="16sp"

android:padding="10dp"/>

</TableRow>

<TextView

android:text="Mark"

android:textSize="16sp"

android:padding="10dp"/>

<TextView

android:text="21"

android:textSize="16sp"

android:padding="10dp"/>

<TextView

android:text="9874987480"

android:textSize="16sp"

android:padding="10dp"/>

</TableRow>

<TextView

android:text="Omkar"

android:textSize="16sp"

android:padding="10dp"/>

<TextView

android:text="18"

android:textSize="16sp"

android:padding="10dp"/>

<TextView

android:text="9873098399"

android:textSize="16sp"

android:padding="10dp"/>

</TableRow>

</TableLayout>

4. Write a program to accept username and password from the end user using Text View and edit Text.

App Name=LoginForm

MainActivity.xml

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

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical"

android:padding="16dp">

<EditText

android:id="@+id/usernameEditText"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:hint="Username" />

<EditText

android:id="@+id/passwordEditText"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:hint="Password"

android:inputType="textPassword" />

<Button

android:id="@+id/loginButton"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="Login" />

</LinearLayout>

MainActivity.java

package com.example.LoginForm;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {

// Declare variables for the EditText views, username and password

private EditText editTextUsername;

private EditText editTextPassword;

// Declare variable for the login button

private Button buttonLogin;

// Declare variables for storing the correct username and password

private String correctUsername = "user123";

private String correctPassword = "pass123";

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

// Get references to the EditText views and login button

editTextUsername = findViewById(R.id.usernameEditText);

editTextPassword = findViewById(R.id.passwordEditText);

buttonLogin = findViewById(R.id.loginButton);

// Set OnClickListener for the login button

buttonLogin.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

// Get the entered username and password

String enteredUsername = editTextUsername.getText().toString();

String enteredPassword = editTextPassword.getText().toString();

// Check if the entered username and password match the correct username and password

if (enteredUsername.equals(correctUsername) && enteredPassword.equals(correctPassword)) {

// If the username and password match, show a success message

Toast.makeText(getApplicationContext(), "Login successful", Toast.LENGTH_SHORT).show();

} else {

// If the username and password do not match, show an error message

Toast.makeText(getApplicationContext(), "Incorrect username or password", Toast.LENGTH_SHORT).show();

}

});

}

6. Write a program to create a login form for a social networking site.

Mainactivity.xml

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

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical">

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="ONLINE FORMS"

android:textSize="25sp"

android:layout_centerHorizontal="true"

android:textStyle="bold|italic"

android:layout_marginTop="50dp"

android:textColor="#000"

android:id="@+id/tvSite"/>

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="USERNAME"

android:id="@+id/tvUsername"

android:textSize="20sp"

android:layout_below="@+id/tvSite"

android:layout_marginTop="50dp"

android:layout_marginStart="15dp"

android:layout_marginLeft="15dp"/>

<EditText

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:id="@+id/etUsername"

android:layout_toEndOf="@+id/tvUsername"

android:layout_toRightOf="@id/tvUsername"

android:layout_below="@+id/tvSite"

android:layout_marginTop="50dp"

android:textColor="#000"/>

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="PASSWORD"

android:id="@+id/tvPassword"

android:textSize="20sp"

android:layout_below="@+id/tvUsername"

android:layout_marginTop="68dp"

android:layout_marginStart="15dp"

android:layout_marginLeft="15dp"/>

<EditText

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:id="@+id/etPassword"

android:layout_toEndOf="@+id/tvPassword"

android:layout_toRightOf="@id/tvPassword"

android:layout_below="@+id/etUsername"

android:layout_marginTop="50dp"

android:textColor="#000"/>

<Button

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Login"

android:layout_below="@+id/etPassword"

android:layout_centerHorizontal="true"

android:layout_marginTop="50dp"

android:textSize="16sp"

android:id="@+id/btnLogin"/>

</RelativeLayout>

Mainactivity.java

package com.example.socialmedia;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

EditText etUsername, etPassword;

Button btnLogin;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

etUsername = findViewById(R.id.etUsername);

etPassword = findViewById(R.id.etPassword);

btnLogin = findViewById(R.id.btnLogin);

btnLogin.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

String Username = etUsername.getText().toString();

String Password = etPassword.getText().toString();

Toast.makeText(MainActivity.this, Username + "|n" + Password , Toast.LENGTH_SHORT).show();

}

});

}

7. Write a program to show five checkboxes and toast selected checkbox.

AppName=SelectCheckbox

MainActivity.xml

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

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical"

android:padding="16dp">

<CheckBox

android:id="@+id/checkBox1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Checkbox 1" />

<CheckBox

android:id="@+id/checkBox2"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Checkbox 2" />

<CheckBox

android:id="@+id/checkBox3"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Checkbox 3" />

<CheckBox

android:id="@+id/checkBox4"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Checkbox 4" />

<CheckBox

android:id="@+id/checkBox5"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Checkbox 5" />

<Button

android:id="@+id/showSelectionButton"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="Show Selected Checkboxes" />

</LinearLayout>

MainActivity.java

package com.example.SelectCheckbox;

import androidx.appcompat.app.AppCompatActivity;

import android.annotation.SuppressLint;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.CheckBox;

import android.widget.Toast;

import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {

private CheckBox checkBox1, checkBox2, checkBox3, checkBox4, checkBox5;

private Button showSelectionButton;

@SuppressLint("MissingInflatedId")

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

checkBox1 = findViewById(R.id.checkBox1);

checkBox2 = findViewById(R.id.checkBox2);

checkBox3 = findViewById(R.id.checkBox3);

checkBox4 = findViewById(R.id.checkBox4);

checkBox5 = findViewById(R.id.checkBox5);

showSelectionButton = findViewById(R.id.showSelectionButton);

showSelectionButton.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

ArrayList<String> selectedCheckBoxes = new ArrayList<String>();

if (checkBox1.isChecked()) {

selectedCheckBoxes.add("Checkbox 1");

}

if (checkBox2.isChecked()) {

selectedCheckBoxes.add("Checkbox 2");

}

if (checkBox3.isChecked()) {

selectedCheckBoxes.add("Checkbox 3");

}

if (checkBox4.isChecked()) {

selectedCheckBoxes.add("Checkbox 4");

}

if (checkBox5.isChecked()) {

selectedCheckBoxes.add("Checkbox 5");

}

String message = "Selected Checkboxes: " + selectedCheckBoxes.toString();

Toast.makeText(getApplicationContext(), message, Toast.LENGTH_LONG).show();

}

});

}

8. Write a program to display circular progress bar.

MainActivity.xml

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

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent">

<ProgressBar

android:id="@+id/progressBar"

style="?android:attr/progressBarStyleHorizontal"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignParentLeft="true"

android:layout_alignParentTop="true"

android:layout_marginLeft="109dp"

android:layout_marginTop="432dp"

android:max="100"

android:minWidth="200dp"

android:minHeight="50dp"

android:progress="1" />

<ProgressBar

android:id="@+id/progressBar_cyclic"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:minHeight="50dp"

android:minWidth="50dp"

android:layout_centerVertical="true"

android:layout_centerHorizontal="true" />

<TextView

android:id="@+id/textView"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignLeft="@+id/progressBar"

android:layout_below="@+id/progressBar"/>

</RelativeLayout>

Mainactivity.java

package com.example.circularprogressbar;

import android.app.Activity;

import android.os.Bundle;

import android.os.Handler;

import android.widget.ProgressBar;

import android.widget.TextView;

public class MainActivity extends Activity { private ProgressBar progressBar;

private int progressStatus = 0;

private TextView textView;

private Handler handler = new Handler();

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

progressBar = (ProgressBar) findViewById(R.id.progressBar);

textView = (TextView) findViewById(R.id.textView);

// Start long running operation in a background thread

new Thread(new Runnable() {

public void run() {

while (progressStatus < 100) {

progressStatus += 1;

handler.post(new Runnable() {

public void run() {

progressBar.setProgress(progressStatus);

textView.setText(progressStatus+"/"+progressBar.getMax());

}

});

try {

Thread.sleep(200);

} catch (InterruptedException e) {

e.printStackTrace();

}

}).start();

}

9. Write a program to display 15 buttons using Grid view

mainactivity.xml

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

<GridView xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent" android:numColumns="5"

android:columnWidth="50dp"

android:stretchMode="columnWidth"

android:id="@+id/gridView">

</GridView>

mainactivity.java

package com.example.gridview;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.AdapterView;

import android.widget.ArrayAdapter;

import android.widget.Button;

import android.widget.GridView;

import android.widget.ImageView;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

GridView gridView;

static final String[] numbers = new String[] {

"1","2","3","4","5","6",

"7","8","9","10","11",

"12","13","14","15"

};

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

gridView = findViewById(R.id.gridView);

ArrayAdapter<String> adapter = new ArrayAdapter<>(this,

android.R.layout.simple_list_item_1, numbers);

gridView.setAdapter(adapter);

gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {

@Override

public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

Toast.makeText(MainActivity.this, (String) parent.getItemAtPosition(position), Toast.LENGTH_SHORT).show();

}

);

}

10. Write a program to display a toast message.

Mainactivity.xml

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

<LinearLayout 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"

android:orientation="vertical">

<Button

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Show Toast"

android:layout_gravity="center_horizontal"

android:layout_margin="24dp"

android:textSize="16dp"

android:padding="16dp"

android:onClick="setCustomToast"/>

</LinearLayout>

App > res > layout > custom_toast.xml

Custom_toast.xml

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

<LinearLayout 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"

android:orientation="vertical">

<Button

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Show Toast"

android:layout_gravity="center_horizontal"

android:layout_margin="24dp"

android:textSize="16dp"

android:padding="16dp"

android:onClick="setCustomToast"/>

</LinearLayout>

Mainactivity.java

package com.example.customtoast;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Context;

import android.os.Bundle;

import android.view.Gravity;

import android.view.LayoutInflater;

import android.view.View;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

}

public void setToast(View view) {

Toast.makeText(this, "Default Toast !", Toast.LENGTH_SHORT).show();

}

public void setCustomToast(View view) {

Context context = getApplicationContext();

LayoutInflater inflater = getLayoutInflater();

View toastRoot = inflater.inflate(R.layout.custom_toast,null);

Toast toast = new Toast(context);

toast.setView(toastRoot);

toast.setDuration(Toast.LENGTH_LONG);

toast.setGravity(Gravity.CENTER_HORIZONTAL|Gravity.CENTER_VERTICAL,0,0);

toast.show();

}

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