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Found 1631 Articles for Android
4K+ Views
This example demonstrates how to convert an image into a Base64 string on Android using Kotlin.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. Step 3 − Add the following code to src/MainActivity.ktimport android.graphics.Bitmap import android.graphics.BitmapFactory import android.os.Bundle import android.util.Base64 import android.widget.TextView import androidx.appcompat.app.AppCompatActivity import java.io.ByteArrayOutputStream class MainActivity : AppCompatActivity() { lateinit var textView: TextView override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) ... Read More
480 Views
This example demonstrates how to programmatically add buttons into layout one by one in several lines using Kotlin.Step 1 − Create a new project in Android Studio, go to File? New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml.Example Step 3 − Add the following code to src/MainActivity.ktimport android.os.Bundle import android.view.Gravity import android.widget.Button import android.widget.LinearLayout import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) title = "KotlinApp" val layout = LinearLayout(this) ... Read More
3K+ Views
This example demonstrates how to run an Android service always in the background using Kotlin.Step 1 − Create a new project in Android Studio, go to File? New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml.Example Step 3 − Create a new Kotlin class MyService.kt and add the following codeimport android.app.Service import android.content.Intent import android.os.IBinder import android.widget.Toast class MyService : Service() { override fun onStartCommand(intent: Intent, flags: Int, startId: Int): Int { onTaskRemoved(intent) Toast.makeText( applicationContext, "This ... Read More
404 Views
This example demonstrates how to clear an ImageView in Android using Kotlin.Step 1 − Create a new project in Android Studio, go to File? New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml.Example Step 3 − Add the following code to src/MainActivity.ktimport androidx.appcompat.app.AppCompatActivity import android.os.Bundle import android.view.View import android.widget.ImageView import android.widget.Toast class MainActivity : AppCompatActivity() { lateinit var imageView: ImageView override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) title = "KotlinApp" imageView = ... Read More
639 Views
This example demonstrates how to change the position of the Dialog on screen Android using Kotlin.Step 1 − Create a new project in Android Studio, go to File? New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml.Example Step 3 − Add the following code to src/MainActivity.ktimport android.os.Bundle import android.view.Gravity import androidx.appcompat.app.AlertDialog import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) title = "KotlinApp" val builder: AlertDialog.Builder = AlertDialog.Builder(this) ... Read More
278 Views
This example demonstrates how To Make a Circle Custom Progress Bar in Android using Kotlin.Step 1 − Create a new project in Android Studio, go to File? New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml.ExampleStep 3 − Add the following code to src/MainActivity.ktimport android.content.res.Resources import android.graphics.drawable.Drawable import android.os.Bundle import android.os.Handler import android.widget.ProgressBar import android.widget.TextView import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() { var status = 0 private val handler: Handler = Handler() lateinit var textView: TextView override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) ... Read More
991 Views
This example demonstrates how to draw text On image in Android using Kotlin.Step 1 − Create a new project in Android Studio, go to File? New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml.Example Step 3 − Add the following code to src/MainActivity.ktimport android.graphics.Color import android.os.Bundle import android.widget.TextView import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) title = "KotlinApp" val textView: TextView = findViewById(R.id.text) ... Read More
4K+ Views
This example demonstrates how to get and store device ID in Android using Kotlin.Step 1 − Create a new project in Android Studio, go to File? New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml.Example Step 3 − Add the following code to src/MainActivity.ktimport android.os.Bundle import android.provider.Settings import android.widget.TextView import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) title = "KotlinApp" val textView: TextView = findViewById(R.id.textView) ... Read More
518 Views
This example demonstrates how to update listview after insert values in Android sqlite using Kotlin.Step 1 − Create a new project in Android Studio, go to File? New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml.Example Step 3 − Add the following code to src/MainActivity.ktimport android.os.Bundle import android.widget.* import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() { private lateinit var save: Button private lateinit var refresh: Button private lateinit var name: EditText private lateinit var salary: EditText ... Read More
278 Views
This example demonstrates how to prevent a dialog from closing when a button is clicked using Kotlin.Step 1 − Create a new project in Android Studio, go to File ? New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml.Example Step 3 − Add the following code to src/MainActivity.ktimport androidx.appcompat.app.AppCompatActivity import android.os.Bundle import android.widget.Button import android.widget.Toast import androidx.appcompat.app.AlertDialog class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) title = "KotlinApp" val dialog: ... Read More