SeekBar

SeekBar  ci permette di spostare l’avanzamento di un’ attività  verso sinistra o verso destra.Con il metodo setOnSeekBarChangeListener andiamo a gestire  gli eventi onStartTrackingTouch() e onStopTrackingTouch()):

<?xml version=”1.0″ encoding=”utf-8″?>
<LinearLayout
xmlns:android=”http://schemas.android.com/apk/res/android&#8221;
android:layout_width=”match_parent”
android:layout_height=”match_parent”
android:gravity=”center”
android:orientation=”vertical”>

<SeekBar
android:layout_width=”match_parent”
android:layout_height=”wrap_content”
android:id=”@+id/seekBar”/>
</LinearLayout>

package com.example.seekbar.activities;

import android.os.Bundle;
import androidx.appcompat.app.AppCompatActivity;
import com.example.seekbar.R;
import android.widget.*;

public class MainActivity extends AppCompatActivity {
SeekBar seekBar;

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

seekBar=findViewById(R.id.seekBar);

seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener(){
@Override
public void onProgressChanged(SeekBar seekBar,int progress,boolean fromTouch){

}

@Override
public void onStartTrackingTouch(SeekBar seekBar){

}

@Override
public void onStopTrackingTouch(SeekBar seekBar){

}
});
    }

}