public void loadSong(int s) {
TextView songName = (TextView) findViewById(R.id.textViewSong);
if (s == 1) {
songName.setText(songName1);
bpm = bpm1;
metronome.setTempo(bpm);
}
if (s == 2) {
songName.setText(songName2);
bpm = bpm2;
metronome.setTempo(bpm);
}
if (s == 3) {
songName.setText(songName3);
bpm = bpm3;
metronome.setTempo(bpm);
}
if (s == 4) {
songName.setText(songName4);
bpm = bpm4;
metronome.setTempo(bpm);
}
if (s == 5) {
songName.setText(songName5);
bpm = bpm5;
metronome.setTempo(bpm);
}
bpmTextView.setText(String.valueOf(bpm));
}
@Override
public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
Log.i("msg", "onScroll X=" + distanceX + " Y=" + distanceY);
if (Math.abs(distanceY) > Math.abs(distanceX) * 1.5) {
if (playStatePrevious != 3) // prevents starting metronome when changing tempo
stop = true;
flasherState = 0;
bpmf = bpmf + distanceY / 10;
if (bpmf > 49 || bpmf < 201) {
bpm = ((int) bpmf);
bpmTextView.setText(String.valueOf(bpm));
metronome.setTempo(bpm);
}
}
return false;
}
/**
* Calculates average tempo of touches, sets it and starts metronome. Calculates tempo from 57 to
* 200 bpm. Re-calculate after 1100 ms pause*
*/
private void tapTempo() {
int hp = metronome.headPosition();
bpmf = bpm;
playStatePrevious = metronome.getPlayState();
// If tapped while playing, just after the previous click, it doesn't click again, just delays
// next click.
if (playStatePrevious == 3) {
if (hp < 8820) {
metronome.setDelay(hp / 44100 * 1000);
}
} else {
flasher();
metronome.play();
startDelayHandler.postDelayed(startDelay, 20000 / bpm); //
}
if (tapCount == 0) { // On the first tap it only records time
timeFirstTap = System.currentTimeMillis();
timeLastTap = timeFirstTap;
tapCount++;
} else if ((System.currentTimeMillis() - timeLastTap)
< 1050) { // Maximum time between taps is set to 1050 ms (57 bpm)
if (hp
> 8820) { // If tapped while playing, after less than 8820 samples from the previous
// click, it doesn't stop, just delays next click.
metronome.stop();
}
timeLastTap = System.currentTimeMillis();
exactBpmMs = (double) (timeLastTap - timeFirstTap) / tapCount;
exactBpm = 60000 / exactBpmMs;
tapBpm = (int) Math.round(exactBpm);
Log.i("exactBpm", "" + exactBpm);
Log.i("tapBpm", "" + tapBpm);
if (tapBpm > 200) tapBpm = 200;
metronome.setTempo(tapBpm);
bpm = tapBpm;
bpmTextView.setText(String.valueOf(tapBpm));
tapCount++;
if (hp > 7340) {
metronome.play();
startDelayHandler.postDelayed(startDelay, (20000 / bpm));
}
} else {
tapCount = 1;
timeFirstTap = System.currentTimeMillis();
timeLastTap = timeFirstTap;
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
getWindow()
.addFlags(
WindowManager.LayoutParams
.FLAG_KEEP_SCREEN_ON); // Flasher should always be visible for a musician
mSettings = getSharedPreferences(APP_PREFERENCES, Context.MODE_PRIVATE);
detector = new GestureDetector(this, this);
metronome = new Metronome();
InputStream in = getResources().openRawResource(R.raw.click_fine);
mHandler = handler();
metronome.createPlayer(bpm, in, mHandler); // creating an AudioTrack with the click sound
bpmTextView = (TextView) findViewById(R.id.textViewBPM);
beatTextView = (TextView) findViewById(R.id.textViewBeat);
flashSmall = (ImageView) findViewById(R.id.flashSmall);
flashFadeout = AnimationUtils.loadAnimation(this, R.anim.flash_fadeout);
loadSong(songNumber);
bpmTextView.setText(String.valueOf(bpm));
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
builder
.setTitle("Thank you for testing Live Metronome!")
.setMessage(
"This is an alpha version, tested only on API10 (Android 2.3.6). "
+ "It may fail to work on other API.")
.setCancelable(false)
.setNegativeButton(
"OK",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
AlertDialog alert = builder.create();
alert.show();
}
@Override
public void run() {
metronome.compensateDelay();
}
@Override
public void onLongPress(MotionEvent e) {
metronome.stop();
}
@Override
protected void onDestroy() {
super.onDestroy();
metronome.stop(); // Prevents creating new AudioTrack over existing one
}
