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Introduction Android application package also referred as .apk file is generally installed on a mobile device which helps to run the android application on a mobile device. This apk file is a zip file which contains the application code, resources and a manifest file. AndroidManifest.xml file is considered as one of the most important files of any android application package (apk). It contains essential metadata of any application such as application’s name, version, permissions which are provided in the application to be requested for the user to use the application and many more. In this article we will take a ... Read More
A dictionary is an unordered collection in which data is stored in the form of key-value pairs, where keys are the unique identifiers of any data type like string, integer, etc., that are connected with each value. In Swift, we are allowed to create an empty dictionary. An empty dictionary is a dictionary which does not contain any element or we can say that its size is zero. Syntax let myDicti = [Int:Int]() Or let myDicti:[Int:Int]= [:] Or let myDicti:[String:Int]= [:] So to create an empty dictionary you can use any of the given syntaxes. Here it ... Read More
In Swift, to count how many times a specified character occurs in the given string we create a function. It will increase the value of the counter by one whenever the specified character appears in the given string and then return the final count at the end of the given string. Input String = “Today is cloudy day” Character = “y” Output 3 Where, character “y” appears three times in the given string so the output of the input is 3. Algorithm Step 1 − Create a function that returns the specified character's total occurrence. Step 2 ... Read More
Introduction Many times in android applications we can see that OTP received for user authentication is detected automatically and it is added within the application automatically. Users don't have to add the otp manually. This can be done in android applications with the help of broadcast receivers. In this article we will take a look on How to listen for incoming sms messages in android application Implementation We will be creating a simple application in which we will be displaying two text views. First text view is for displaying the heading of our application. Second text view we will be ... Read More
To convert the array of characters into a string Swift provides the following methods − Using String() initialiser Using append() method Input array = [“S”, “w”, “i”, “f”, “t”] Output Swift Here we join all the characters given in the array to create a string. Method 1: Using String() Initialiser To convert the array of characters into a string we can use String() initialisers. The String() initialiser will create the object of a string. Here we use parameterise string initialiser. Syntax Swift(value) Here value represents the array which we want to convert into a string. ... Read More
To check if the given string is empty or not Swift provides an inbuilt property named as isEmpty. This property will return true if the given string is empty. And return false if the given string is not empty. Here empty string means whose length is 0 or we can say a string that does not contain any character. String 1 = “Swift” String 2 = “” Where string 1 is not an empty string because it contains a sequence of characters or it has some length. Whereas string 2 is an empty string because it does contains anything ... Read More
In Swift, a dictionary is an unordered collection in which data is stored in the form of key-value pairs, where keys are the unique identifiers. So to check the equality of two dictionaries we first need to check if the size of both the dictionaries is equal or not. If yes, then we check if both dictionaries contain the same key-value pairs or not. If both conditions are equal, then that means the given two dictionaries are equal. If any of the conditions are false then that means the given dictionaries are not equal. Algorithm Step 1 − Create ... Read More
Swift provides an hasPrefix() function to check if a string starts with a specified substring. The hasPrefix() function returns a boolean value which indicates whether the specified substring matches the starting string characters of the input string. The hasPrefix() function is case sensitive, which means according to this function “a”, and “A” are two different values. Input String = “Ram got first place” SubString = “Ram” Output Yes Here, the characters of the substring match the starting characters of the input string. Syntax func hasPrefix(value) Here, the value represents a string. This function returns true if the ... Read More
Swift provides an hasSuffix() function to check a string end with a specified substring. The hasSuffix() function returns a boolean value which indicates whether the specified substring matches the ending characters of the input string. The hasSuffix() function is case sensitive that means according to this function “t”, and “T” are two different values. Input String = “Today is cloudy day” SubString = “day” Output yes Here, the character of the substring matches the ending characters of the input string. Syntax func hasSuffix(value) Here, the value represents a string. This function returns true if the value matches ... Read More
In Swift, a dictionary is an unordered collection in which data is stored in the form of key-value pairs. To add elements to a dictionary we can use any of the following methods − Using Bracket notation Using updateValue() method Method 1: Using Brackets Notation We can key-value pairs in the dictionary using bracket notation or we can say that using subscript notation. In this method, we can add a new key in the brackets and assign the corresponding value. If the specified key already exists, then it will replace the value of that key we the new ... Read More