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copied!<p>If you look at the source of the Chronometer class, you'll see that it doesn't store the elapsed time in a field and it calculates it internally every time it needs to update the display.</p> <p>However it's relatively easy to do the same in your own code:</p> <pre><code>long elapsedMillis = SystemClock.elapsedRealtime() - chronometerInstance.getBase(); </code></pre> <p>This assumes that you have started your clock something like this:</p> <pre><code>chronometerInstance.setBase(SystemClock.elapsedRealtime()); chronometerInstance.start(); </code></pre> <p>Here's a full example:</p> <pre><code>public class ChronoExample extends Activity { Chronometer mChronometer; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); LinearLayout layout = new LinearLayout(this); layout.setOrientation(LinearLayout.VERTICAL); mChronometer = new Chronometer(this); layout.addView(mChronometer); Button startButton = new Button(this); startButton.setText("Start"); startButton.setOnClickListener(mStartListener); layout.addView(startButton); Button stopButton = new Button(this); stopButton.setText("Stop"); stopButton.setOnClickListener(mStopListener); layout.addView(stopButton); Button resetButton = new Button(this); resetButton.setText("Reset"); resetButton.setOnClickListener(mResetListener); layout.addView(resetButton); setContentView(layout); } private void showElapsedTime() { long elapsedMillis = SystemClock.elapsedRealtime() - mChronometer.getBase(); Toast.makeText(ChronoExample.this, "Elapsed milliseconds: " + elapsedMillis, Toast.LENGTH_SHORT).show(); } View.OnClickListener mStartListener = new OnClickListener() { public void onClick(View v) { mChronometer.start(); showElapsedTime(); } }; View.OnClickListener mStopListener = new OnClickListener() { public void onClick(View v) { mChronometer.stop(); showElapsedTime(); } }; View.OnClickListener mResetListener = new OnClickListener() { public void onClick(View v) { mChronometer.setBase(SystemClock.elapsedRealtime()); showElapsedTime(); } }; } </code></pre> <p>One somewhat confusing thing about Chronometer is that you can't really use it as a stopwatch that gets started, stopped and restarted again. When it's running, it will always show the time elapsed since you last reset it, <em>no matter how many times and for how long you have stopped it in the meantime</em>. When it is stopped, it simply stops updating the display.</p> <p>If you need something like a stopwatch you'll have to subclass Chronometer or maybe create your own version using the <a href="http://www.google.com/codesearch/p?hl=en#uX1GffpyOZk/core/java/android/widget/Chronometer.java&q=android%20chronometer" rel="noreferrer">source</a>.</p> <p><img src="https://farm4.static.flickr.com/3301/3273256911_192eae1767_o.png" alt="alt text"></p>

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