import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.SeekBar;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
private TextView textView;
private SeekBar seekBar;
private Float aFloat;
private String string;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textView=findViewById(R.id.textViewlayout);
seekBar=findViewById(R.id.seekBarlayout);
seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
aFloat=(float)(progress *0.1);
string= Float.toString(aFloat);
string= string + " %";
textView.setText(string);
//For 100.0% » 100%
//And 0.0% » 0 %
if(textView.getText().toString().equals("100.0 %")) textView.setText("100 %");
if(textView.getText().toString().equals("0.0 %")) textView.setText("0 %");
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
}
}
<?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=".MainActivity">
<TextView
android:id="@+id/textViewlayout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="51dp"
android:text="Move Thumb"
android:textSize="30sp"
app:layout_constraintBottom_toTopOf="@+id/seekBarlayout"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" />
<SeekBar
android:id="@+id/seekBarlayout"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:layout_marginBottom="341dp"
android:max="1000"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" />
</android.support.constraint.ConstraintLayout>