Wednesday, August 12, 2015

How to change ListView text size in Android

activity_main.xml

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/rl"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="10dp"
    tools:context=".MainActivity"
    android:background="#d3aa67"
    >
    <ListView
        android:id="@+id/lv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:isScrollContainer="false"
        android:background="#e4ba6a"
        />
</RelativeLayout>
MainActivity.java

package com.cfsuman.me.androidcodesnippets;

import android.os.Bundle;
import android.app.Activity;
import android.util.TypedValue;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;


public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // Get reference of widgets from XML layout
        final ListView lv = (ListView) findViewById(R.id.lv);

        // Initializing a new String Array
        String[] fruits = new String[] {
                "Abiu",
                "Batuan",
                "Black Mulberry",
                "Cape Gooseberry",
                "Desert banana",
                "Eastern May Hawthorn",
                "Fibrous Satinash",
                "Gooseberry"
        };

        // Create a List from String Array elements
        final List<String> fruits_list = new ArrayList<String>(Arrays.asList(fruits));

        // Create an ArrayAdapter from List
        final ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>
                (this, android.R.layout.simple_list_item_1, fruits_list){
            @Override
            public View getView(int position, View convertView, ViewGroup parent){
                /// Get the Item from ListView
                View view = super.getView(position, convertView, parent);

                TextView tv = (TextView) view.findViewById(android.R.id.text1);

                // Set the text size 25 dip for ListView each item
                tv.setTextSize(TypedValue.COMPLEX_UNIT_DIP,25);

                // Return the view
                return view;
            }
        };

        // DataBind ListView with items from ArrayAdapter
        lv.setAdapter(arrayAdapter);
    }
}
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