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Understanding GridView in Android: A Comprehensive Guide to Implementing Grid Layouts

GridView in Android is a type of AdapterView used to display items in a two-dimensional scrolling grid layout. This detailed explanation covers the use of GridView, its attributes, setting up adapters, creating model classes, and working with MainActivity files.

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Understanding GridView in Android: A Comprehensive Guide to Implementing Grid Layouts

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  1. GridView in Android

  2. What is What is GridView GridView • A GridView is a type of AdapterView that displays items in a two- dimensional scrolling grid. Items are inserted into this grid layout from a database or from an array. The adapter is used for displaying this data, setAdapter() method is used to join the adapter with GridView. The main function of the adapter in GridView is to fetch data from a database or array and insert each piece of data in an appropriate item that will be displayed in GridView.

  3. XML Attributes of XML Attributes of GridView GridView • android:numColumns: This attribute of GridView will be used to decide the number of columns that are to be displayed in Grid. • android:horizontalSpacing: This attribute is used to define the spacing between two columns of GridView. • android:verticalSpacing: This attribute is used to specify the spacing between two rows of GridView.

  4. Example Example

  5. app > res > layout > Right app > res > layout > Right- -Click > Layout Resource file Resource file- ->cardview.xml >cardview.xml Click > Layout

  6. Create a Create a Model Class for Storing Data Model Class for Storing Data • app > java > apps package name > Right app > java > apps package name > Right- -Click Java Class Java Class- ->CourseModel.java >CourseModel.java Click on it. Then Click on New > New >

  7. Create an Adapter Class Create an Adapter Class • app > java > apps package name > Right app > java > apps package name > Right- -Click Java Class Java Class- ->CourseGVadapter.java >CourseGVadapter.java Click on it. Then Click on New > New >

  8. Working with the Working with the MainActivity MainActivity File File

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