public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button button = findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Vibrator vibrator = (Vibrator)getSystemService(Context.VIBRATOR_SERVICE);
if (Build.VERSION.SDK_INT >= 26) {
vibrator.vibrate(VibrationEffect.createOneShot(1000, 10));
// - public static VibrationEffect createOneShot (long milliseconds, int amplitude)
// Create a one shot vibration. One shot vibrations will vibrate constantly for the specified period of time at the specified amplitude, and then stop.
// milliseconds long: The number of milliseconds to vibrate. This must be a positive number.
// amplitude int: The strength of the vibration. This must be a value between 1 and 255, or DEFAULT_AMPLITUDE.
} else {
vibrator.vibrate(1000);
// Vibrate constantly for the specified period of time.
// This method was deprecated in API level 26. Use vibrate(android.os.VibrationEffect) instead.
}
}
});
Button button2 = findViewById(R.id.button2);
button2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Uri uri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
// - public static Uri getDefaultUri (int type)
// Returns the Uri for the default ringtone of a particular type. Rather than returning the actual ringtone's sound Uri, this will return the symbolic Uri
// which will resolved to the actual sound when played.
// - public static final int TYPE_NOTIFICATION
// Type that refers to sounds that are used for notifications.
// Constant Value: 2 (0x00000002)
Ringtone ringtone = RingtoneManager.getRingtone(getApplicationContext(), uri);
// Returns a Ringtone for a given sound URI.
// If the given URI cannot be opened for any reason, this method will attempt to fallback on another sound. If it cannot find any, it will return null.
ringtone.play();
// Plays the ringtone.
}
});
Button button3 = findViewById(R.id.button3);
button3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
MediaPlayer mediaPlayer = MediaPlayer.create(getApplicationContext(), R.raw.media);
// Convenience method to create a MediaPlayer for a given resource id. On success, prepare() will already have been called and must not be called again.
// When done with the MediaPlayer, you should call release(), to free the resources. If not released, too many MediaPlayer instances will result in an exception.
mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mp) {
mp.release();
// Releases resources associated with this MediaPlayer object. It is considered good practice to call this method when you're done using the MediaPlayer.
}
});
// Interface definition for a callback to be invoked when playback of a media source has completed.
mediaPlayer.start();
// Starts or resumes playback. If playback had previously been paused, playback will continue from where it was paused. If playback had been stopped, or never
// started before, playback will start at the beginning.
}
});
}
}
