Purpose The purpose of this assignment is to help you learn more about the conce
ID: 3861349 • Letter: P
Question
Purpose The purpose of this assignment is to help you learn more about the concepts of Data Persistence and List implementation in Mobile Application Development. Brief Introduction Data Persistence The capability to have data that the app uses or relies on to continue to be available regardless of changes to the app's state as it moves through the app life cycle is vital to the user experience with the app-and for the app itself to be a useful tool. For this to occur, the data needs to persist through these life cycle changes. Android provides several ways in which the developer can make data persist. List Lists arc very useful tools and have become ubiquitous in mobile computing. Lists arc an ordered collection (also known as a sequence). The user of this interface has precise control over where in the list each element is inserted. The user can access elements by their integer index (position in the list), and search for elements in the list. Lists arc common because they are a very useful way to organize, display, and access large amounts of data on a very small screen. Action Items Introduce data persistence approaches with example Explore the implementation of lists in AndroidExplanation / Answer
Data Presistance - Data presistance means life of data, how long we want data to be in the memory. suppose if we make a program of adding five numbers. Then the user have to enter these number with some device like keyboard, then after applying the condition on program. if we want again to multiply the same five number then user again have to enter those five number. insted of input again these number we can save those five number in our system memory due to which we dont have to ask user again again to input the same number. This concept of how much time we need the data in our memory is said to be data presistance.
list in android - list is very important part in android app as it helps in how to organize data in a small screen and display lot more data in a small screen. list helps in overall looking of the app way more attrative then ever because it let's user to see the data in a organized way, that helps people to able to access data clearly.
implementaion of list in android- suppose we made seven items, which we want to display on screen and the item is namely as item 1, item 2.....item 7 and to able to show them in list on a screen we have to apply java code in the android app developer. for that we need to open mainactivity.java file. for the list we need to use the concpet of array. by which we can implement the list.
In mobile application development concept of data presistence and list is very important as data preistence decide for how long we need data in the memory which helps in reducing the input time and helps in more optimized application which is much speeder and reduce the user work. The implementaion of list is very useful in the mobile application as it helps in reducing the complexity of the user, by using list we can arrange the data in a order of list due to which developer can show much more data in a small screen and in organized way.
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