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MVC Architecture in Android

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MVC represents Model-View-Controller Model : Manage the behavior and data of the application R esponds to requests for information about its state (usually from the view) Responds to instructions to change state (usually from the controller) Allows the views to produce updated output View : T ypically a user interface element O ne to one correspondence with a display surface Present the model to the user Generates the output representation to the user Controller : Controls both model and view Accepts input from the user and instructs the model and the view to perform actions based on that input Update view when model changes Update model when user manipulate the input
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Android  ListView  is a view which groups several items and display them in vertical scrollable list. The list items are automatically inserted to the list using an  Adapter  that pulls content from a source such as an array or database. An adapter actually bridges between UI components and the data source that fill data into UI Component. Adapter can be used to supply the data to like spinner, list view, grid view etc. Consider you have an array of strings you want to display in a ListView, initialize a new  ArrayAdapter. ArrayAdapter adapter = new ArrayAdapter<String>(this, R.layout.listview, StringArray);             Here are arguments for this constructor: First argument is the application context. Most of cases, use this. Second argument layout defines in XML file, having TextView for each string in the array. Final argument is the array of strings which will be shown as a list. O...
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