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Showing posts from August, 2022

onBackPressed() method is deprecated, you are looking for an alternative? Here It is the Latest Solution in android | Kotlin

Swap two numbers in java | Using third variable | without third variable | XOR Bitwise opearation | Java tutorial for beginners .

When we learning any programming languages like C, C++, Python, PHP etc, then the " Number Swap Programming " comes first for learning.  In this article I write the number swapping between two numbers in JAVA with 3 different algorithms .  1. Creating an auxiliary memory cell in the memory ; i.e use a temporary or 3rd variable. 2. Without creating any auxiliary(additional) memory cell ; i.e without use of any 3rd variable. 3. Using exclusive OR (Bit-wise XOR) operator. Problem Statement: Write a program in java to swap two numbers. Approach- 1 :  Creating an auxiliary memory cell in the memory ; i.e use a temporary or 3rd variable. In this approach we take a extra variable that temporarily holds the value of one variable. public class Test { public static void main (String[] args) { swapUsingTempVar( 5 , 6 ); } static void swapUsingTempVar ( int a, int b) { int temp; System. out . println ( "

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How to Insert Multiple rows in a single db transaction in Android Room Database? | Android | Room DB

  To insert multiple rows into a Room database in Android, you can follow these steps: 1. Set up Room Database: First, make sure you have set up your Room database correctly in your Android project. Define your Entity class, create a Database class that extends RoomDatabase, and set up your DAO (Data Access Object) interface. 2. Create Entity Class: Define an Entity class that represents the data you want to insert into the database. For example: 1 2 3 4 5 6 7 8 9 @Entity (tableName = "my_table" ) public class MyEntity { @PrimaryKey (autoGenerate = true ) public int id; public String name; public int age; // Add other fields and getters/setters as needed } Create DAO: Create a DAO interface with a method to insert multiple rows. For example: 1 2 3 4 5 @Dao public interface MyEntityDao { @Insert void insertAll (List<MyEntity> entities); } Initialise Database and DAO: In your application code, create an insta

Recycler View Like Google Play Store App | How to use SnapHelper Android, Kotlin

 If we see the google play store android app, we can see that the app list in horizontal recycler view hold a property that the first property hold always full visible or not visible, but a portion visible is not seeing. This property is snap property. In this article I show you how to use it in our own application. Basically we use two type of snap. Center Snap and start snap. I show you both here. So read full article here. The Key Moment code is here- For center snap you need to write 2 lines code- //center Snap val snapHelper = LinearSnapHelper() snapHelper.attachToRecyclerView(recyclerView1) For start snap, create a class in kotlin say StartSnapHelper.kt package com.example.snaphelpersampleapp import android.view.View import androidx.recyclerview.widget.LinearLayoutManager import androidx.recyclerview.widget.LinearSnapHelper import androidx.recyclerview.widget.OrientationHelper import androidx.recyclerview.widget.RecyclerView class StartSnapHelpe

How to fetch Latitude, Longitude from address and vice-versa(address from Latitude, Longitude) using Google Geo coder SDK in android| Kotlin

 In this Android development related article, you will get a simple solution that, how to get address using Latitude, Longitude and vice-versa. i.e latitude, longitude from an address text. It is very easy and simple. Read full article and carefully follow all the steps. Here we use google Geocoder SDK. Okay, first we create an android project in kotlin and create an Activity say MainActivity.kt. Use the below code- Function get Latitude, Longitude from Address- fun getLatLngFromAddress (context: Context, mAddress: String): String { val coder = Geocoder(context) lateinit var address: List<Address> try { address = coder.getFromLocationName(mAddress, 5 ) if (address == null ) { return "Fail to find Lat,Lng" } val location = address[ 0 ] return " Latitude: ${location.latitude}\n Longitude: ${location.longitude}" } catch (e: Exception