NKV Computer Engineer

  val text = "Register" val duration = Toast.LENGTH_SHORT val toast = Toast.makeText(applicationContext, text, duration) toast.show()

  package com.example.schooladmin import androidx.appcompat.app. AppCompatActivity import android.os. Bundle import android.view. View import android.widget.* import java.util. ArrayList class Registerpage : AppCompatActivity(), AdapterView . OnItemSelectedListener { lateinit var spinner : Spinner lateinit var textView : TextView override fun onCreate (savedInstanceState: Bundle ?) { super .onCreate(savedInstanceState) setContentView( R . layout . activity_registerpage ) textView = findViewById( R . id . textView ) spinner = findViewById( R . id . spinner ) val adapter = ArrayAdapter .createFromResource( this , R . array . name , android. R . layout . simple_spinner_item ) adapter .setDropDownViewResource(android. R . layout . simple_spinner_dropdown_item ) spinner . adapter = adapter spinner . onItemSelectedListener = this } override fun onNothingSelected...

  package com.niranjan.garbagemanagement.admin ; import androidx.annotation. NonNull ; import androidx.appcompat.app.AppCompatActivity ; import android.os.Bundle ; import android.util.Log ; import android.view.View ; import android.widget.AdapterView ; import android.widget.ArrayAdapter ; import android.widget.Button ; import android.widget.EditText ; import android.widget.Spinner ; import android.widget.TextView ; import android.widget.Toast ; import com.google.android.gms.tasks.OnCompleteListener ; import com.google.android.gms.tasks.OnFailureListener ; import com.google.android.gms.tasks.OnSuccessListener ; import com.google.android.gms.tasks.Task ; import com.google.firebase.auth.FirebaseAuth ; import com.google.firebase.database.DatabaseReference ; import com.google.firebase.database.FirebaseDatabase ; import com.google.firebase. firestore.CollectionReference; import com.google.firebase. firestore.DocumentReference; import com.google.firebase. firestore.FirebaseFirestore; impo...

          if(ActivityCompat.checkSelfPermission(                 this,                 android.Manifest.permission.CAMERA             ) == PackageManager.PERMISSION_GRANTED         ){         }else{            ActivityCompat.requestPermissions(this,            arrayOf(android.Manifest.permission.CAMERA),1234)         }

  (image list maximum 20 ,image like nature,flower) 1)Display image list in recyclerview with name,image 2)On click of image in recyclerview display image in dialog box 3)On Long click of any row/itemView display/visible checkbox in all row/itemView, 4)Display selected/checked image list into next page on submit button <? 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" > < androidx.recyclerview.widget.RecyclerView android :layout_width ="match_parent" android :layout_height ="match_parent" android :id ="@+id/r...

  < uses-permission android :name ="android.permission.ACCESS_NETWORK_STATE" /> < uses-permission android :name ="android.permission.CALL_PHONE" /> <? 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" android :orientation ="vertical" android :gravity ="center" tools :context =".MainActivity" > < Button android :id ="@+id/button" android :layout_gravity ="center" android :layout_width ="wrap_content" android :layout_height ="wrap_content" android :text ="Check" /> < EditTex...

  plugins { id 'com.android.application' } android { compileSdkVersion 30 buildToolsVersion "30.0.2" defaultConfig { applicationId "com.example.retrofitapp2" minSdkVersion 16 targetSdkVersion 30 versionCode 1 versionName "1.0" testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner" } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile( 'proguard-android-optimize.txt' ), 'proguard-rules.pro' } } compileOptions { sourceCompatibility JavaVersion . VERSION_1_8 targetCompatibility JavaVersion . VERSION_1_8 } } dependencies { implementation 'androidx.appcompat:appcompat:1.2.0' implementation 'com.google.android.material:material:1.2.1' implementation 'androidx.constraintlayout:constraintlayout:2.0.2' testImplemen...