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 rightย ย 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());
}
});
}
}