Simple GridView Android

GridView Android :

Gridview is similar to listview in Android but with more column . In listview we have rows, but in grid we have columns. if you are not aware with
gridview, youcan read Listview. 

Gridview allows user to scroll data till end. In layman we can say, multiple textview inside scrollview.

Gridview Android

You have to define   android:numColumns="2"

Lets have a look at code.

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>

<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context="com.stacklearning.simlegridview.MainActivity">



    <GridView

        android:id="@+id/grid"

        android:numColumns="2"

        android:layout_height="wrap_content"

        android:layout_width="match_parent">

    </GridView>



</android.support.constraint.ConstraintLayout>

MainActivity.java

package com.stacklearning.simlegridview;



import android.os.Bundle;

import android.support.v7.app.AppCompatActivity;

import android.view.View;

import android.widget.AdapterView;

import android.widget.ArrayAdapter;

import android.widget.GridView;

import android.widget.Toast;



import java.util.ArrayList;

import java.util.List;



public class MainActivity extends AppCompatActivity {

    GridView gridView;



    List<String> gridValue;



    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        gridView = (GridView) findViewById(R.id.grid);



        gridValue = new ArrayList<>();

        gridValue.add("First Column Grid View");

        gridValue.add("Second Column Grid View");

        gridValue.add("Third Column Grid View");

        gridValue.add("Forth Column Grid View");

        gridValue.add("Fifth Column Grid View");

        gridValue.add("Sixth Column Grid View");

        gridValue.add("Seventh Column Grid View");





        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,

                android.R.layout.simple_list_item_1, android.R.id.text1, gridValue);



        gridView.setAdapter(adapter);



        // GridView Item Click Listener

        gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {



            @Override

            public void onItemClick(AdapterView<?> parent, View view,

                                    int position, long id) {



                int itemPosition = position;

                String itemValue = (String) gridView.getItemAtPosition(position);

                Toast.makeText(getApplicationContext(),

                        "Position clicked:" + itemPosition + "  Grid Item is : " + itemValue, Toast.LENGTH_LONG)

                        .show();

            }

        });

    }

} 

                                                      DOWLOAD CODE


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