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Custom Toast in Android using Kotlin    In previous article we have discussed on what is Toast and its syntax check out on this link if required  What is toast  and  basic example of toast using kotlin  Toast Example  this will be continued article of previous  activity_main.xml Add the below code in your activity_main.xml file , this file contains button which on click will display the toast <? xml version= "1.0" encoding= "utf-8" ?> < LinearLayout xmlns: android = "http://schemas.android.com/apk/res/android" xmlns: tools = "http://schemas.android.com/tools" xmlns: app = "http://schemas.android.com/apk/res-auto" android :layout_width= "match_parent" android :layout_height= "match_parent" tools :context= ".MainActivity" android :orientation= "vertical" > < Button android :layout_width= ...

                  Toast example  in Android using Kotlin       In previous article we have discussed on what is Toast and its syntax check out on this link if required  What is toast  and this will be continued article of previous  activity_main.xml Add the below code in your activity_main.xml file , this file contains button which on click will display the toast <? xml version= "1.0" encoding= "utf-8" ?> < LinearLayout xmlns: android = "http://schemas.android.com/apk/res/android" xmlns: tools = "http://schemas.android.com/tools" xmlns: app = "http://schemas.android.com/apk/res-auto" android :layout_width= "match_parent" android :layout_height= "match_parent" tools :context= ".MainActivity" android :orientation= "vertical" > < Button android :layout_width= "match_parent" ...

  Toast What is Toast ? A toast is used to show small message or information for short period of time. Syntax :      Toast.makeText(this, "message or information to be displayed", Toast.LENGTH_LONG).show( ); where this - refers to the current class /context.           message - can contain any message to be displayed          Toast.LENGTH_LONG - displays the message for 4sec          or         Toast.LENGTH_SHORT - displays the message for 2sec Happy Reading 😊 Thank You Sushmitha N Hi there ! Im a experienced android developer with 4years of revelant exprience.My Skills include Android,Core Java ,Oops and Kotlin. Youtube Channel :  SDK Book

                            A Data structures organises the group of data element in an efficient way to store and retrieve the data from computer. Most commonly used data structures are  arrays, linked list,stack,queue,hash tables. Why do we need Data Structure ? As applications becomes complex and demands for the huge data handling then processor slows down, data searching would become difficult and multiple requests to the server may slow down the system to overcome all this drawbacks we use data structure in an efficient and reusable way.  Data Structure Classification Primitive Data Structure - it contains primary datatypes byte , short , int , long , char , Boolean , float and double. Non-Primitive Data Structure - it is derived from primary datatypes such as array, list, files etc (contains of collection of similar type of datatype) Arrays - array is a collection...

Count how many numbers are negative in an array? Approach: Assume array of integer arr = [5,-9,66,-8,37] As  we know a negative number is a real number less than zero We are going to apply the same logic here , and check the number of negative numbers in the array. Expected output is : 2 ,since there are 2 negative numbers among the set of numbers Implementing in Java /* Read input from STDIN. Print your output to STDOUT*/ import java.io.*; import java.util.*; public class CountNegativeNumbers{   public static void main(String args[] ) throws Exception { //Write code here Scanner scan = new Scanner(System.in); int n = scan.nextInt();    // takes user input int a[] = new int[n];   // creates array depending on the user input int count=0;              //count variable which is zero initially for(...

Find the biggest difference between any two numbers in array? Approach: Assume array of integer arr = [5,9,66,8,37]  Two calculate biggest difference between two numbers logic is largest number - smallest number . By arranging the array in ascending order we get the first element which is smallest and the last element which is largest. Now the array look like integer arr =[5,8,9,37,66] Here the solution is last element (largest number)- first element(smallest number) i.e; 66-5= 61 Implementing in Java /* Read input from STDIN. Print your output to STDOUT*/ import java.io.*; import java.util.*; public class BiggestDifference{   public static void main(String args[] ) throws Exception { //Takes user input Scanner sc = new Scanner(System.in); int n = sc.nextInt(); //create an array depending upon the number of user inputs int[] array = new int[n]; //insert user input elements into the array for(int i = 0; i < n; i++) ...

Android Interview Questions Which was the first mobile brand with Android Application?                           Answer :   First Mobile brand with Android Application was HTC. What is the current version of android and its API ?   Answer: Current version of android  is “Pie” (as per Nov 2018) and its API level 28. Life cycle of Activity ? Answer: OnCreate() - This method is called when the activity is created . It is called only once in activity lifecycle. OnStart() - This method is called when the activity is getting started , no user interactions will be done at this stage,and this method will be called several times in activity life cycle depending upon the user navigation.(Loads UI) OnResume()- On this method call user can interact with the activity and perform actions like click. OnPause()- W...