I found this example very good: http://mrigaen.blogspot.it/2013/12/create-circular-progress-bar-in-android.html
So I created my progress bar in this way
<ProgressBar android:id="@+id/barTimer" style="?android:attr/progressBarStyleHorizontal" android:layout_width="200dp" android:layout_height="200dp" android:layout_centerInParent="true" android:progressDrawable="@drawable/circular_progress_bar" /> Then I made a function for the countdown where:
private void startTimer(final int minuti) { countDownTimer = new CountDownTimer(60 * minuti * 1000, 500) { // 500 means, onTick function will be called at every 500 milliseconds
@Override public void onTick(long leftTimeInMilliseconds) { long seconds = leftTimeInMilliseconds / 1000; int barVal= (barMax) - ((int)(seconds/60*100)+(int)(seconds%60)); barTimer.setProgress(barVal); textTimer.setText(String.format("%02d", seconds/60) + ":" + String.format("%02d", seconds%60)); // format the textview to show the easily readable format
} @Override public void onFinish() { if(textTimer.getText().equals("00:00")){ textTimer.setText("STOP"); } else{ textTimer.setText("2:00"); } } }.start();
}
*UPDATE*
private void startTimer(final int minuti) { countDownTimer = new CountDownTimer(60 * minuti * 1000, 500) { // 500 means, onTick function will be called at every 500 milliseconds
@Override public void onTick(long leftTimeInMilliseconds) { long seconds = leftTimeInMilliseconds / 1000; barTimer.setProgress((int)seconds); textTimer.setText(String.format("%02d", seconds/60) + ":" + String.format("%02d", seconds%60)); // format the textview to show the easily readable format
} @Override public void onFinish() { if(textTimer.getText().equals("00:00")){ textTimer.setText("STOP"); } else{ textTimer.setText("2:00"); barTimer.setProgress(60*minuti); } } }.start();
}

I found this example very good: http://mrigaen.blogspot.it/2013/12/create-circular-progress-bar-in-android.html
So I created my progress bar in this way
<ProgressBar android:id="@+id/barTimer" style="?android:attr/progressBarStyleHorizontal" android:layout_width="200dp" android:layout_height="200dp" android:layout_centerInParent="true" android:progressDrawable="@drawable/circular_progress_bar" /> Then I made a function for the countdown where:
private void startTimer(final int minuti) { countDownTimer = new CountDownTimer(60 * minuti * 1000, 500) { // 500 means, onTick function will be called at every 500 milliseconds
@Override public void onTick(long leftTimeInMilliseconds) { long seconds = leftTimeInMilliseconds / 1000; int barVal= (barMax) - ((int)(seconds/60*100)+(int)(seconds%60)); barTimer.setProgress(barVal); textTimer.setText(String.format("%02d", seconds/60) + ":" + String.format("%02d", seconds%60)); // format the textview to show the easily readable format
} @Override public void onFinish() { if(textTimer.getText().equals("00:00")){ textTimer.setText("STOP"); } else{ textTimer.setText("2:00"); } } }.start();
}
*UPDATE*
private void startTimer(final int minuti) { countDownTimer = new CountDownTimer(60 * minuti * 1000, 500) { // 500 means, onTick function will be called at every 500 milliseconds
@Override public void onTick(long leftTimeInMilliseconds) { long seconds = leftTimeInMilliseconds / 1000; barTimer.setProgress((int)seconds); textTimer.setText(String.format("%02d", seconds/60) + ":" + String.format("%02d", seconds%60)); // format the textview to show the easily readable format
} @Override public void onFinish() { if(textTimer.getText().equals("00:00")){ textTimer.setText("STOP"); } else{ textTimer.setText("2:00"); barTimer.setProgress(60*minuti); } } }.start();
}