TimeConverter.java

package com.uw.ictd.respeak;

/** Adapted from: http://www.androidhive.info/2012/03/android-building-audio-player-tutorial/ */
public class TimeConverter {
	
	/**
	 * Function to convert milliseconds time to Timer Format
	 * Hours:Minutes:Seconds
	 */
	public static String milliSecondsToTimer(long milliseconds) {
		String finalTimerString = "";
		String secondsString = "";

		// Convert total duration into time
		int hours = (int) (milliseconds / (1000 * 60 * 60));
		int minutes = (int) (milliseconds % (1000 * 60 * 60)) / (1000 * 60);
		int seconds = (int) ((milliseconds % (1000 * 60 * 60)) % (1000 * 60) / 1000);
		
		// Add hours if there
		if (hours > 0) {
			finalTimerString = hours + ":";
		}

		// Appending 0 to seconds if it is one digit
		if (seconds < 10) {
			secondsString = "0" + seconds;
		} else {
			secondsString = "" + seconds;
		}

		finalTimerString = finalTimerString + minutes + ":" + secondsString;

		// return timer string
		return finalTimerString;
	}

	/**
	 * Function to get Progress percentage
	 * 
	 * @param currentDuration
	 * @param totalDuration
	 */
	public static int getProgressPercentage(long currentDuration, long totalDuration) {
		Double percentage = (double) 0;

		long currentSeconds = (int) (currentDuration / 1000);
		long totalSeconds = (int) (totalDuration / 1000);

		// calculating percentage
		percentage = (((double) currentSeconds) / totalSeconds) * 100;

		// return percentage
		return percentage.intValue();
	}

	/**
	 * Function to change progress to timer
	 * 
	 * @param progress
	 *            -
	 * @param totalDuration
	 *            returns current duration in milliseconds
	 * */
	public static int progressToTimer(int progress, int totalDuration) {
		int currentDuration = 0;
		totalDuration = (int) (totalDuration / 1000);
		currentDuration = (int) ((((double) progress) / 100) * totalDuration);

		// return current duration in milliseconds
		return currentDuration * 1000;
	}
}