This video reveals the steps to create a quantity controller App in your Android Telephone. This video first creates a easy structure with quantity up and down button and makes use of a seekbar to indicate the present stage of the quantity.
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https://programmerworld.co/android/how-to-adjust-the-volume-of-your-android-phone-programmatically-from-your-app-source-code/
Full Java code used on this tutorial may be discovered under:
bundle com.instance.myvolumecontroller;
import android.content material.Context;
import android.media.AudioManager;
import android.os.Bundle;
import android.view.View;
import android.widget.SeekBar;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;
public class MainActivity extends AppCompatActivity {
non-public SeekBar seekBar;
non-public AudioManager audioManager;
@Override
protected void onCreate(Bundle savedInstanceState) {
tremendous.onCreate(savedInstanceState);
setContentView(R.structure.activity_main);
seekBar = findViewById(R.id.seekBar);
audioManager = (AudioManager) getApplicationContext().getSystemService(Context.AUDIO_SERVICE);
seekBar.setMax(audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC));
seekBar.setProgress(audioManager.getStreamVolume(AudioManager.STREAM_MUSIC));
}
public void UpButton(View view){
audioManager.adjustVolume(AudioManager.ADJUST_RAISE, AudioManager.FLAG_PLAY_SOUND);
seekBar.setProgress(audioManager.getStreamVolume(AudioManager.STREAM_MUSIC));
Toast.makeText(this,”Quantity Up”, Toast.LENGTH_SHORT).present();
}
public void DownButton(View view){
audioManager.adjustVolume(AudioManager.ADJUST_LOWER, AudioManager.FLAG_PLAY_SOUND);
seekBar.setProgress(audioManager.getStreamVolume(AudioManager.STREAM_MUSIC));
Toast.makeText(this,”Quantity Down”, Toast.LENGTH_SHORT).present();
}
}
source
