public class MainActivity extends AppCompatActivity {
private int seconds = 120; // two min
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
circularSeekbar = (SeekBar) findViewById(R.id.circularSeekbar);
mTvTime = (TextView) findViewById(R.id.mTvTime);
circularSeekbar.setMax(seconds);
circularSeekbar.setProgress(seconds);
circularSeekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
if(fromUser) {
seconds = progress;
}
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
startTimer(seconds * 1000);
}
});
startTimer(seconds * 1000);
}
private void startTimer(final long milisecods) {
if (countDownTimer != null) {
countDownTimer.cancel();
}
countDownTimer = new CountDownTimer(milisecods, 500) {
// 500 means, onTick function will be called at every 500
// milliseconds
@Override
public void onTick(long leftTimeInMilliseconds) {
int barVal = (int) leftTimeInMilliseconds / 1000;
circularSeekbar.setProgress(barVal);
mTvTime.setText(String.format("%02d:%02d",
TimeUnit.MILLISECONDS.toMinutes(leftTimeInMilliseconds),
TimeUnit.MILLISECONDS.toSeconds(leftTimeInMilliseconds) -
TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(leftTimeInMilliseconds))
));
}
@Override
public void onFinish() {
}
}.start();
}
}