endmad26
v1.0.0
Published
BMS College of Engineering Mail Syed Saifullah Beigh <[email protected]> (no subject) Syed Saifullah Beigh <[email protected]> Sun, Jun 29, 2025 at 11:18 PM To: Vyom Goyal <[email protected]>, Syed Saifullah Beigh <saifulla
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BMS College of Engineering Mail Syed Saifullah Beigh [email protected] (no subject) Syed Saifullah Beigh [email protected] Sun, Jun 29, 2025 at 11:18 PM To: Vyom Goyal [email protected], Syed Saifullah Beigh [email protected], Kumar Aditya [email protected], Nilesh Kumar Singh [email protected] CIE 1
Autocomplete
XML
<AutoCompleteTextView
android:id="@+id/autoCompleteTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Type a fruit" />
<AutoCompleteTextView
android:id="@+id/autoCompleteTextView2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Type a colour"
android:layout_marginTop="16dp" />package com.example.myapplication
import android.annotation.SuppressLint import android.os.Bundle import android.widget.ArrayAdapter import android.widget.AutoCompleteTextView import androidx.appcompat.app.AppCompatActivity
class MainActivity : AppCompatActivity() {
private val fruits = arrayOf("Apple", "Banana")
private val colours = arrayOf("Blue", "Purple")
@SuppressLint("MissingInflatedId")
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
val autoTextView: AutoCompleteTextView = findViewById(R.id.autoCompleteTextView)
val autoTextView2: AutoCompleteTextView = findViewById(R.id.autoCompleteTextView2)
val adapter1: ArrayAdapter<String> = ArrayAdapter(
this,
android.R.layout.select_dialog_item,
fruits
)
val adapter2: ArrayAdapter<String> = ArrayAdapter(
this,
android.R.layout.select_dialog_item,
colours
)
autoTextView.threshold = 1
autoTextView.setAdapter(adapter1)
autoTextView2.threshold = 1
autoTextView2.setAdapter(adapter2)
}}
DatePicker
<DatePicker
android:id="@+id/element1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="30dp"
android:layout_marginTop="150dp"
android:layout_marginEnd="31dp"
android:layout_marginBottom="150dp" />package com.example.test1
import android.os.Build import android.os.Bundle import android.support.annotation.RequiresApi import android.support.v7.app.AppCompatActivity import android.widget.DatePicker import android.widget.Toast
@Suppress("NAME_SHADOWING") class MainActivity : AppCompatActivity() { @RequiresApi(Build.VERSION_CODES.O) override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) val picker1=findViewById(R.id.element1) picker1.setOnDateChangedListener { picker1, i, i2, i3 -> val i2 = i2 + 1 Toast.makeText(applicationContext,"Date is: $i3/$i2/$i",Toast.LENGTH_SHORT).show() }
}}
ToggleButton
<ImageView
android:id="@+id/imageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerInParent="true"
android:layout_marginTop="50dp"
android:src="@drawable/ic_launcher_background" />
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/imageView"
android:layout_centerInParent="true"
android:layout_marginTop="50dp"
android:text="TextView" />
<ToggleButton
android:id="@+id/toggleButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/textView"
android:layout_centerInParent="true"
android:layout_marginTop="50dp"
android:text="ToggleButton" />
<ImageView
android:id="@+id/imageView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerInParent="true"
android:layout_marginTop="50dp"
app:srcCompat="@drawable/img" />package com.example.test1
import android.support.v7.app.AppCompatActivity import android.os.Bundle import android.view.View import android.widget.ImageView import android.widget.TextView import android.widget.ToggleButton
class MainActivity : AppCompatActivity() { lateinit var image1: ImageView lateinit var image2: ImageView lateinit var result: TextView lateinit var toggleButton: ToggleButton override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main)
toggleButton=findViewById(R.id.toggleButton)
image1=findViewById(R.id.imageView)
image2=findViewById(R.id.imageView2)
result=findViewById(R.id.textView)
toggleButton.setOnCheckedChangeListener { compoundButton,isChecked->
if(isChecked){
image1.visibility = View.VISIBLE
image2.visibility = View.GONE
result.text="Image1 is visible"
}
else{
image1.visibility = View.GONE
image2.visibility = View.VISIBLE
result.text="Image2 is visible"
}
}
}}
Calculator
<android.support.constraint.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">
<EditText
android:id="@+id/editTextNumber1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:hint="Enter number 1"
android:inputType="number"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
android:layout_marginTop="32dp"
android:ems="10" />
<EditText
android:id="@+id/editTextNumber2"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:hint="Enter number 2"
android:inputType="number"
app:layout_constraintTop_toBottomOf="@+id/editTextNumber1"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
android:layout_marginTop="16dp"
android:ems="10" />
<TextView
android:id="@+id/result"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Result"
app:layout_constraintTop_toBottomOf="@+id/editTextNumber2"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
android:layout_marginTop="16dp" />
<Button
android:id="@+id/buttonsubs"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Sub"
app:layout_constraintTop_toBottomOf="@+id/result"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
android:layout_marginTop="16dp" />
<Button
android:id="@+id/buttonadd"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Add"
app:layout_constraintTop_toBottomOf="@+id/buttonsubs"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
android:layout_marginTop="16dp" />
<Button
android:id="@+id/buttondiv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Div"
app:layout_constraintTop_toBottomOf="@+id/buttonadd"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
android:layout_marginTop="16dp" />
<Button
android:id="@+id/buttonmult"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Mult"
app:layout_constraintTop_toBottomOf="@+id/buttondiv"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
android:layout_marginTop="16dp" /></android.support.constraint.ConstraintLayout>
package com.example.test2
import android.support.v7.app.AppCompatActivity import android.os.Bundle import android.widget.Button import android.widget.EditText import android.widget.TextView
class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main)
val buttonadd = findViewById<Button>(R.id.buttonadd)
val buttonsubs = findViewById<Button>(R.id.buttonsubs)
val buttonmult = findViewById<Button>(R.id.buttonmult)
val buttondiv = findViewById<Button>(R.id.buttondiv)
val number1 = findViewById<EditText>(R.id.editTextNumber1)
val number2 = findViewById<EditText>(R.id.editTextNumber2)
val answer = findViewById<TextView>(R.id.result)
buttonadd.setOnClickListener{
val num1 = number1.text.toString().toInt()
val num2 = number2.text.toString().toInt()
val sum = num1 + num2
answer.text = sum.toString()
}
buttonsubs.setOnClickListener{
val num1 = number1.text.toString().toInt()
val num2 = number2.text.toString().toInt()
val sum = num1 - num2
answer.text = sum.toString()
}
buttonmult.setOnClickListener{
val num1 = number1.text.toString().toInt()
val num2 = number2.text.toString().toInt()
val sum = num1 * num2
answer.text = sum.toString()
}
buttondiv.setOnClickListener{
val num1 = number1.text.toString().toInt()
val num2 = number2.text.toString().toInt()
val sum = num1 / num2
answer.text = sum.toString()
}
}}
CHECKBOX -> PIZZAAA
XML
<android.support.constraint.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">
<CheckBox
android:id="@+id/checkBox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Pizza - 100 Rs"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintStart_toStartOf="parent"
android:layout_marginTop="48dp"
android:layout_marginStart="32dp" />
<CheckBox
android:id="@+id/checkBox2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Coffee - 50 Rs"
app:layout_constraintTop_toBottomOf="@id/checkBox"
app:layout_constraintStart_toStartOf="parent"
android:layout_marginTop="16dp"
android:layout_marginStart="32dp" />
<CheckBox
android:id="@+id/checkBox3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Burger - 120 Rs"
app:layout_constraintTop_toBottomOf="@id/checkBox2"
app:layout_constraintStart_toStartOf="parent"
android:layout_marginTop="16dp"
android:layout_marginStart="32dp" />
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Show Bill"
app:layout_constraintTop_toBottomOf="@id/checkBox3"
app:layout_constraintStart_toStartOf="parent"
android:layout_marginTop="32dp"
android:layout_marginStart="32dp" /></android.support.constraint.ConstraintLayout>
package com.example.myapplication
import android.annotation.SuppressLint import android.support.v7.app.AppCompatActivity import android.os.Bundle import android.widget.*
class MainActivity : AppCompatActivity() { lateinit var pizza: CheckBox lateinit var coffee: CheckBox lateinit var burger: CheckBox lateinit var button: Button
@SuppressLint("MissingInflatedId")
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
pizza = findViewById(R.id.checkBox)
coffee = findViewById(R.id.checkBox2)
burger = findViewById(R.id.checkBox3)
button = findViewById(R.id.button)
button.setOnClickListener {
var totalAmount = 0
val result = StringBuilder()
result.append("Selected Items:\n")
if (pizza.isChecked) {
result.append("Pizza: 100 Rs\n")
totalAmount += 100
}
if (coffee.isChecked) {
result.append("Coffee: 50 Rs\n")
totalAmount += 50
}
if (burger.isChecked) {
result.append("Burger: 120 Rs\n")
totalAmount += 120
}
result.append("Total: $totalAmount Rs")
Toast.makeText(applicationContext, result.toString(), Toast.LENGTH_LONG).show()
}
}}
Donut Code Toast
<android.support.constraint.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">
<ImageView
android:id="@+id/imageView5"
android:layout_width="200dp"
android:layout_height="200dp"
android:layout_marginTop="48dp"
android:onClick="donuts"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:srcCompat="@drawable/img" />
<ImageView
android:id="@+id/imageView8"
android:layout_width="190dp"
android:layout_height="195dp"
android:layout_marginTop="4dp"
android:onClick="froyo"
app:layout_constraintTop_toBottomOf="@id/imageView5"
app:layout_constraintStart_toStartOf="parent"
app:srcCompat="@drawable/img" />
<ImageView
android:id="@+id/imageView7"
android:layout_width="200dp"
android:layout_height="200dp"
android:layout_marginTop="4dp"
android:onClick="sandwich"
app:layout_constraintTop_toBottomOf="@id/imageView8"
app:layout_constraintStart_toStartOf="parent"
app:srcCompat="@drawable/img" />
<TextView
android:id="@+id/textView5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Tap an item to order!"
android:textSize="18sp"
android:textStyle="bold"
android:layout_marginTop="16dp"
app:layout_constraintTop_toBottomOf="@id/imageView7"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent" /></android.support.constraint.ConstraintLayout>
package com.example.myapplication
import android.annotation.SuppressLint import android.support.v7.app.AppCompatActivity import android.os.Bundle import android.view.View import android.widget.*
class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) }
fun donuts(view: View) {
Toast.makeText(this, "You ordered Donuts", Toast.LENGTH_SHORT).show()
}
fun froyo(view: View) {
Toast.makeText(this, "You ordered Froyo", Toast.LENGTH_SHORT).show()
}
fun sandwich(view: View) {
Toast.makeText(this, "You ordered Sandwich", Toast.LENGTH_SHORT).show()
}}
TimePicker
<android.support.constraint.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">
<TimePicker
android:id="@+id/tp1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="30dp"
android:layout_marginTop="150dp"
android:layout_marginEnd="31dp"
android:layout_marginBottom="150dp"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent" /></android.support.constraint.ConstraintLayout>
package com.example.test3
import android.os.Bundle import android.support.v7.app.AppCompatActivity import android.widget.TimePicker import android.widget.Toast
@Suppress("NAME_SHADOWING") class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) val tp=findViewById(R.id.tp1) tp.setOnTimeChangedListener{_,hour,minute-> val am_pm="" val hour=if(hour<10) "0" + hour else hour val min=if(minute<10) "0" +minute else minute val msg="Time is: + $hour : $min $am_pm" Toast.makeText(this@MainActivity,msg,Toast.LENGTH_SHORT).show() }
}}
CUSTOM CHECKBOX FLOWER
XMLLL
<android.support.constraint.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">
<LinearLayout
android:id="@+id/option1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:gravity="center_vertical"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
android:layout_marginTop="150dp">
<ImageView
android:layout_width="24dp"
android:layout_height="24dp"
android:src="@drawable/img" />
<CheckBox
android:id="@+id/checkBox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="CheckBox 1"
android:layout_marginStart="8dp"/>
</LinearLayout>
<LinearLayout
android:id="@+id/option2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:gravity="center_vertical"
app:layout_constraintTop_toBottomOf="@id/option1"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
android:layout_marginTop="30dp">
<ImageView
android:layout_width="24dp"
android:layout_height="24dp"
android:src="@drawable/img" />
<CheckBox
android:id="@+id/checkBox2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="CheckBox 2"
android:layout_marginStart="8dp"/>
</LinearLayout>
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Submit"
app:layout_constraintTop_toBottomOf="@id/option2"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
android:layout_marginTop="50dp" /></android.support.constraint.ConstraintLayout>
package com.example.myapplication
import android.annotation.SuppressLint import android.support.v7.app.AppCompatActivity import android.os.Bundle import android.view.View import android.widget.*
class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main)
val button = findViewById<Button>(R.id.button)
val ch1 = findViewById<CheckBox>(R.id.checkBox)
val ch2 = findViewById<CheckBox>(R.id.checkBox2)
button.setOnClickListener {
val msg = StringBuilder("Selected: ")
if (ch1.isChecked) {
msg.append(" ${ch1.text}")
}
if (ch2.isChecked) {
msg.append(" ${ch2.text}")
}
Toast.makeText(applicationContext, msg.toString(), Toast.LENGTH_LONG).show()
}
}}
Custom Toast
activity.xml:
<ImageView
android:id="@+id/toast_icon"
android:src="@drawable/img"
android:layout_width="24dp"
android:layout_height="24dp"
android:layout_marginEnd="8dp" />
<TextView
android:id="@+id/toast_text"
android:text="Custom Toast!"
android:textColor="@android:color/white"
android:textSize="16sp"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />toast_custom.xml:
<ImageView
android:id="@+id/toast_icon"
android:src="@drawable/img"
android:layout_width="24dp"
android:layout_height="24dp"
android:layout_marginEnd="8dp" />
<TextView
android:id="@+id/toast_text"
android:text="Custom Toast!"
android:textColor="@android:color/white"
android:textSize="16sp"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />kt file:
package com.example.test1
import android.os.Bundle import android.support.v7.app.AppCompatActivity import android.view.Gravity import android.view.LayoutInflater import android.widget.TextView import android.widget.Toast
class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main)
showCustomToast("Toast Test!")
}
private fun showCustomToast(message: String) {
val inflater = layoutInflater
val layout = inflater.inflate(R.layout.toast_custom, null)
val textView = layout.findViewById<TextView>(R.id.toast_text)
textView.text = message
val toast = Toast(applicationContext)
toast.view = layout
toast.duration = Toast.LENGTH_SHORT
toast.setGravity(Gravity.BOTTOM or Gravity.CENTER_HORIZONTAL, 0, 100)
toast.show()
}}
LoginSingup
<EditText
android:id="@+id/editTextUsername"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Username"
android:inputType="text" />
<EditText
android:id="@+id/editTextPassword"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Password"
android:inputType="textPassword" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_marginTop="16dp">
<Button
android:id="@+id/buttonLogin"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="LOGIN" />
<Button
android:id="@+id/buttonSignup"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="SIGNUP" />
</LinearLayout>package com.example.test1
import android.os.Bundle import android.support.v7.app.AppCompatActivity import android.widget.Button import android.widget.EditText import android.widget.Toast
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
val usernameEditText = findViewById<EditText>(R.id.editTextUsername)
val passwordEditText = findViewById<EditText>(R.id.editTextPassword)
val loginButton = findViewById<Button>(R.id.buttonLogin)
loginButton.setOnClickListener {
val enteredUsername = usernameEditText.text.toString()
val enteredPassword = passwordEditText.text.toString()
if (enteredUsername == "vyom" && enteredPassword == "goyal") {
Toast.makeText(this, "Login Successful", Toast.LENGTH_SHORT).show()
// You can add code here to navigate to the next screen or perform other actions
} else {
Toast.makeText(this, "Invalid Credentials", Toast.LENGTH_SHORT).show()
}
}
val signupButton = findViewById<Button>(R.id.buttonSignup)
signupButton.setOnClickListener {
Toast.makeText(this, "Signup functionality to be implemented", Toast.LENGTH_SHORT).show()
// Implement your signup logic here
}
}}
Radio Button:
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="RadioGroup in Kotlin"
android:textSize="20sp"
android:textStyle="bold"
android:layout_marginBottom="16dp" />
<RadioGroup
android:id="@+id/radioGroup"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<RadioButton
android:id="@+id/radioButtonOption1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Option 1" />
<RadioButton
android:id="@+id/radioButtonOption2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Option 2" />
<RadioButton
android:id="@+id/radioButtonOption3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Option 3" />
</RadioGroup>
<Button
android:id="@+id/submitButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="SUBMIT"
android:layout_marginTop="16dp" />package com.example.test1
import android.os.Bundle import android.support.v7.app.AppCompatActivity import android.widget.Button import android.widget.RadioButton import android.widget.RadioGroup import android.widget.Toast
class MainActivity : AppCompatActivity() {
lateinit var radioGroup: RadioGroup
lateinit var submitButton: Button
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
title = "RadioGroup in Kotlin" // Setting the title from the Kotlin code
radioGroup = findViewById(R.id.radioGroup)
submitButton = findViewById(R.id.submitButton)
submitButton.setOnClickListener {
val selectedOptionId = radioGroup.checkedRadioButtonId
if (selectedOptionId != -1) {
val selectedRadioButton = findViewById<RadioButton>(selectedOptionId)
Toast.makeText(this, "Selected: ${selectedRadioButton.text}", Toast.LENGTH_SHORT).show()
} else {
Toast.makeText(this, "Please select an option", Toast.LENGTH_SHORT).show()
}
}
}}
Spinner:
activity_main.xml:
<TextView
android:id="@+id/result"
android:layout_width="300dp"
android:layout_height="50dp"
android:background="#E91E63"
android:gravity="center"
android:text="TextView"
android:textColor="#FFFFFF"
android:textSize="20sp" />
<Spinner
android:id="@+id/spinnerCountry"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20dp" />string.xml in values folder:
MainActivity.kt:
package com.example.semend1
import android.os.Bundle import android.support.v7.app.AppCompatActivity import android.view.View import android.widget.AdapterView import android.widget.ArrayAdapter import android.widget.Spinner import android.widget.TextView
class MainActivity : AppCompatActivity(), AdapterView.OnItemSelectedListener {
lateinit var spinner : Spinner
lateinit var result : TextView
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
spinner = findViewById(R.id.spinnerCountry)
result = findViewById(R.id.result)
spinner.onItemSelectedListener = this
var arrayAdapter = ArrayAdapter.createFromResource(
this,
R.array.countries,
android.R.layout.simple_spinner_item
)
arrayAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item)
spinner.adapter = arrayAdapter
}
override fun onItemSelected(parent: AdapterView<*>?, view: View?, position: Int, id: Long) {
if (parent != null) {
result.text = parent.getItemAtPosition(position).toString()
}
}
override fun onNothingSelected(p0: AdapterView<*>?) {
}}
CIE 2
AlertDialog:
main.kt:
class MainActivity : AppCompatActivity() {
// Lateinit keyword means this variable will be initialized later, before use.
lateinit var showDialogMessage : Button
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
// Sets the content view to the layout defined in activity_main.xml
setContentView(R.layout.activity_main)
// Find the button by its ID from the layout
showDialogMessage = findViewById(R.id.buttonDialogMessage)
// Set an OnClickListener for the button
showDialogMessage.setOnClickListener {
// Call the function to show the AlertDialog when the button is clicked
showAlertDialog()
}
}
/**
* Function to display an AlertDialog.
* It prompts the user if they want to change the button's text.
*/
fun showAlertDialog() {
// Create an instance of AlertDialog.Builder
val alertDialog = AlertDialog.Builder(this@MainActivity)
// Set the title of the dialog
alertDialog.setTitle("Change")
// Set the message of the dialog
.setMessage("Do you want to change the text of the button?")
// Set an icon for the dialog.
// Using a default Android system icon as 'R.drawable.warning' might not exist by default.
// If you have a custom 'warning.png' or 'warning.xml', place it in 'res/drawable'.
.setIcon(android.R.drawable.ic_dialog_alert)
// Set whether the dialog can be cancelled by touching outside it or pressing back button
.setCancelable(false)
// Set the Negative button (e.g., "No") and its click listener
.setNegativeButton("No", DialogInterface.OnClickListener {
dialogInterface, which ->
// Dismiss the dialog when "No" is clicked
dialogInterface.cancel()
Toast.makeText(this, "Button text not changed.", Toast.LENGTH_SHORT).show()
})
// Set the Positive button (e.g., "Yes") and its click listener
.setPositiveButton("Yes", DialogInterface.OnClickListener {
dialogInterface, which ->
// Change the text of the button to "Alert Dialog" when "Yes" is clicked
showDialogMessage.text = "Alert Dialog"
Toast.makeText(this, "Button text changed to 'Alert Dialog'.", Toast.LENGTH_SHORT).show()
})
// Create the AlertDialog object and show it
alertDialog.create().show()
}}
xml:
<android.support.constraint.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:id="@+id/myLayout" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainActivity">
<Button
android:id="@+id/buttonDialogMessage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Show Dialog Message"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" /></android.support.constraint.ConstraintLayout>
ProgressBar:
kt file:
import android.os.Bundle import android.os.Handler import android.os.Looper // Import Looper for Handler import android.view.View import android.widget.Button import android.widget.ProgressBar import android.widget.TextView import android.support.v7.app.AppCompatActivity // Using android.support.v7.app.AppCompatActivity as requested
class MainActivity : AppCompatActivity() {
private var progressBar: ProgressBar? = null
private var i = 0
private var txtView: TextView? = null
// Initialize Handler with Looper.getMainLooper() for UI thread operations
private val handler = Handler(Looper.getMainLooper())
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
// Finding progressbar by its id and casting it to ProgressBar
progressBar = findViewById<ProgressBar>(R.id.progress_Bar)
// Finding textview by its id
txtView = findViewById<TextView>(R.id.text_view)
// Finding button by its id
val btn = findViewById<Button>(R.id.show_button)
// Handling click on button
btn.setOnClickListener {
// Before clicking the button, the progress bar will be invisible,
// so we have to change the visibility of the progress bar to visible.
progressBar!!.visibility = View.VISIBLE
i = progressBar!!.progress // Get current progress (should be 0 initially)
// Start a new thread for the progress simulation to avoid blocking the UI thread
Thread(Runnable {
// This loop will run until the value of i becomes 99
while (i < 100) {
i += 1
// Update the progress bar and display the current value on the UI thread
handler.post(Runnable {
progressBar!!.progress = i
// Setting current progress to the textview
txtView!!.text = "${i}/${progressBar!!.max}"
})
try {
// Pause the thread to simulate work
Thread.sleep(100)
} catch (e: InterruptedException) {
e.printStackTrace()
}
}
// After the loop, set the visibility of the progressbar to invisible on the UI thread
handler.post {
progressBar!!.visibility = View.INVISIBLE
txtView!!.text = "Progress Complete!" // Optional: show completion message
}
}).start() // Start the new thread
}
}}
xml file:
<ProgressBar
android:id="@+id/progress_Bar"
style="?android:attr/progressBarStyle"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:indeterminate = "true"
android:max="100"
android:minWidth="200dp"
android:minHeight="50dp"
android:progress="0"
android:visibility="invisible" />
<TextView
android:id="@+id/text_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/progress_Bar"
android:layout_centerHorizontal="true"
android:layout_marginTop="16dp" />
<Button
android:id="@+id/show_button"
android:layout_width="191dp"
android:layout_height="wrap_content"
android:layout_below="@+id/text_view"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dp"
android:text="Progress Bar" />Canvas:
kt:
import android.graphics.Bitmap import android.graphics.Canvas import android.graphics.Color import android.graphics.Paint import android.graphics.drawable.BitmapDrawable import android.graphics.drawable.ShapeDrawable import android.graphics.drawable.shapes.OvalShape import android.graphics.drawable.shapes.RectShape import android.support.v7.app.AppCompatActivity import android.os.Bundle import android.widget.ImageView
class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) val bitmap: Bitmap = Bitmap.createBitmap(700, 1000, Bitmap.Config.ARGB_8888) val canvas: Canvas = Canvas(bitmap) var shapeDrawable: ShapeDrawable // rectangle positions var left = 100 var top = 100 var right = 600 var bottom = 400
// draw rectangle shape to canvas shapeDrawable = ShapeDrawable(RectShape()) shapeDrawable.setBounds( left, top, right, bottom) shapeDrawable.getPaint().setColor(Color.parseColor("#009944")) shapeDrawable.draw(canvas) // draw oval shape to canvas shapeDrawable = ShapeDrawable(OvalShape()) shapeDrawable.setBounds( 100, 500, 600, 800) shapeDrawable.getPaint().setColor(Color.parseColor("#009191")) shapeDrawable.draw(canvas) val iv = findViewById(R.id.imageV) // now bitmap holds the updated pixels // set bitmap as background to ImageView
val pCircle = Paint()
pCircle.setColor(Color.BLACK)
canvas.drawCircle(30f, 30f, 30f, pCircle)
val pBackground = Paint()
pBackground.color = Color.RED
canvas.drawRect(450f, 450f, 500f, 500f, pBackground)
iv.background = BitmapDrawable(getResources(), bitmap)
}}
xml:
<android.support.constraint.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">
<ImageView
android:id="@+id/imageV"
android:layout_width="315dp"
android:layout_height="526dp"
android:layout_marginTop="100dp"
android:layout_marginEnd="50dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent" /></android.support.constraint.ConstraintLayout>
animation:
mainxml:
<TextView
android:id="@+id/textView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="@+id/linearLayout"
android:gravity="center"
android:text="Mobile Application Development"
android:textSize="32sp"
android:textColor="@color/teal_200"
android:textStyle="bold" />
<LinearLayout
android:id="@+id/linearLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="2">
<Button
android:id="@+id/fade_in"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:text="Fade In"
android:textAllCaps="false" />
<Button
android:id="@+id/fade_out"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:text="Fade Out"
android:textAllCaps="false" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="2">
<Button
android:id="@+id/zoom_in"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:text="Zoom In"
android:textAllCaps="false" />
<Button
android:id="@+id/zoom_out"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:text="Zoom Out"
android:textAllCaps="false" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="2">
<Button
android:id="@+id/slide_down"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:text="Slide Down"
android:textAllCaps="false" />
<Button
android:id="@+id/slide_up"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:text="Slide Up"
android:textAllCaps="false" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="2">
<Button
android:id="@+id/bounce"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:text="Bounce"
android:textAllCaps="false" />
<Button
android:id="@+id/rotate"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:text="Rotate"
android:textAllCaps="false" />
</LinearLayout>
</LinearLayout>res -> new -> android resource directory -> type= anim add new animation resource file
bounce.xml:
fad_in.xml:
fade_out.xml:
slide_down.xml:
slide_up.xml:
zoom_in.xml:
zoom_out.xml:
main kt.file
import android.support.v7.app.AppCompatActivity import android.os.Bundle import android.view.animation.AnimationUtils import android.widget.Button import android.widget.TextView
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
val textView = findViewById<TextView>(R.id.textView)
findViewById<Button>(R.id.fade_in).setOnClickListener {
val animation = AnimationUtils.loadAnimation(this, R.anim.fad_in)
textView.startAnimation(animation)
}
findViewById<Button>(R.id.fade_out).setOnClickListener {
val animation = AnimationUtils.loadAnimation(this, R.anim.fade_out)
textView.startAnimation(animation)
}
findViewById<Button>(R.id.zoom_in).setOnClickListener {
val animation = AnimationUtils.loadAnimation(this, R.anim.zoom_in)
textView.startAnimation(animation)
}
findViewById<Button>(R.id.zoom_out).setOnClickListener {
val animation = AnimationUtils.loadAnimation(this, R.anim.zoom_out)
textView.startAnimation(animation)
}
findViewById<Button>(R.id.slide_up).setOnClickListener {
val animation = AnimationUtils.loadAnimation(this, R.anim.slide_up)
textView.startAnimation(animation)
}
findViewById<Button>(R.id.slide_down).setOnClickListener {
val animation = AnimationUtils.loadAnimation(this, R.anim.slide_down)
textView.startAnimation(animation)
}
findViewById<Button>(R.id.bounce).setOnClickListener {
val animation = AnimationUtils.loadAnimation(this, R.anim.bounce)
textView.startAnimation(animation)
}
findViewById<Button>(R.id.rotate).setOnClickListener {
textView.animate().apply {
duration = 1000
rotationXBy(360f)
}.start()
}
}}
contextMenu
activitymain.xml:
<android.support.constraint.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/B1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Context Menu"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" /></android.support.constraint.ConstraintLayout>
java>new menu directory>new menu resource file named "menu_main.xml"
menu_main.xml:
main.kt:
import android.support.v7.app.AppCompatActivity import android.os.Bundle import android.support.v7.widget.PopupMenu import android.view.ContextMenu import android.view.Menu import android.view.MenuItem import android.view.View import android.widget.Button import android.widget.Toast
class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) val B1 = findViewById(R.id.B1) registerForContextMenu(B1) B1.setOnClickListener { v -> openContextMenu(v)} } override fun onCreateContextMenu( menu: ContextMenu?, v: View?, menuInfo: ContextMenu.ContextMenuInfo? ) { super.onCreateContextMenu(menu, v, menuInfo) menuInflater.inflate(R.menu.menu_main,menu) } override fun onContextItemSelected(item: MenuItem): Boolean { when (item.itemId){ R.id.item1 -> Toast.makeText(this,"Open Selected",Toast.LENGTH_SHORT).show() R.id.item2 -> Toast.makeText(this,"Search Selected",Toast.LENGTH_SHORT).show() R.id.item3 -> Toast.makeText(this,"Exit Selected",Toast.LENGTH_SHORT).show() } return super.onContextItemSelected(item) } }
OptionsMenu
java>new menu directory>new menu resource file named "menu_main.xml"
main.xml:
<android.support.constraint.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:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" /></android.support.constraint.ConstraintLayout>
menu_main.xml: