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Gride View in Firebase

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  <? 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" > < RelativeLayout xmlns: android ="http://schemas.android.com/apk/res/android" xmlns: tools ="http://schemas.android.com/tools" android :layout_width ="match_parent" android :layout_height ="match_parent" android :orientation ="vertical" tools :context =".MainActivity" > <!--Grid View for displaying our data from Firebase--> < GridView android :id ="@+id/...
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Register in kotlin

 Xml :- <? xml version ="1.0" encoding ="utf-8" ?> < ScrollView 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 :orientation ="vertical" android :layout_width ="match_parent" android :layout_height ="match_parent" > < EditText android :layout_width ="match_parent" android :layout_height ="wrap_content" android :hint ="Email" android :id ="@+id/registeremail" /> < EditText android :layout_width ="match_parent" android :layout_height ="wrap_con...
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Insert Multiple Data in Kotlin

<? xml version ="1.0" encoding ="utf-8" ?> < manifest xmlns:android ="http://schemas.android.com/apk/res/android" package ="com.example.realtimedatabasekotlin" > < application android:allowBackup ="true" android:icon ="@mipmap/ic_launcher" android:label ="@string/app_name" android:roundIcon ="@mipmap/ic_launcher_round" android:supportsRtl ="true" android:theme ="@style/Theme.RealtimedatabaseKotlin" > < activity android:name =".UpdateData" > < intent-filter > < action android:name ="android.intent.action.MAIN" /> < category android:name ="android.intent.category.LAUNCHER" /> </ intent-filter > </ activity > < activity android:name =".ReadData" > ...
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Toast Message in Kotlin

  val text = "Register" val duration = Toast.LENGTH_SHORT val toast = Toast.makeText(applicationContext, text, duration) toast.show()
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Spineer View in textview in kotlin

  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...
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Spineer View to text view in Android Studio(Java)

  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...
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Check Permission in Android Studio

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