Sat. Dec 21st, 2024

Android SeekBar is the extension of ProgressBar. SeekBar allows the user to change the value using touch event/draggable thumb/left right arrow keys. The user can increase the value by dragging the thumb right   or by pressing the right arrow key. Similarly the user can decrease the value by dragging the thumb left or by pressing the left arrow key.

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity" >

    <SeekBar
        android:id="@+id/seekBar1"
        android:layout_width="300dp"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginTop="26dp"
        android:max="10"/>

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/seekBar1"
        android:layout_marginLeft="29dp"
        android:layout_marginTop="14dp" />

</RelativeLayout>

MainActivity.Java

package com.androidian.seekbar;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.widget.SeekBar;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    private SeekBar seekBar;
    private TextView textView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        seekBar = (SeekBar) findViewById(R.id.seekBar1);
        textView = (TextView) findViewById(R.id.textView1);
        // Initialize the textview with '0'
        textView.setText(seekBar.getProgress() + "/" + seekBar.getMax());
        seekBar.setOnSeekBarChangeListener(
                new SeekBar.OnSeekBarChangeListener() {
                    int progress = 0;
                    @Override
                    public void onProgressChanged(SeekBar seekBar,
                                                  int progresValue, boolean fromUser) {
                        progress = progresValue;
                    }

                    @Override
                    public void onStartTrackingTouch(SeekBar seekBar) {
                        // Do something here,
                        //if you want to do anything at the start of
                        // touching the seekbar
                    }

                    @Override
                    public void onStopTrackingTouch(SeekBar seekBar) {
                        // Display the value in textview
                        textView.setText(progress + "/" + seekBar.getMax());
                    }
                });
    }



}

By Rajashekar

I’m (Rajashekar) a core Android developer with complimenting skills as a web developer from India. I cherish taking up complex problems and turning them into beautiful interfaces. My love for decrypting the logic and structure of coding keeps me pushing towards writing elegant and proficient code, whether it is Android, PHP, Flutter or any other platforms. You would find me involved in cuisines, reading, travelling during my leisure hours.

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