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POAndroid, how to measure an elapsed amount of time
 

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  1. POAndroid, how to measure an elapsed amount of time
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    <p>I'm working on a presentation app, which displays different images. There I wanted to to let the presentation slide through my List of images, video and pdf files, after a short amount of time.</p> <p>I start my different views through intents, <code>startActivityForResult(intent, RESULT_OK);</code></p> <p>Starting videos and closing videos was not an issue. I used <code>onPreparedListener</code> and <code>setOnCompletionListener</code> and everything worked like a charm.</p> <p>With pictures however, this was completely diffrent.</p> <p>I created a new <code>Thread</code> in my <code>ImageView</code> and did put that thread to <code>sleep()</code>, after that I called the <code>setresult()</code> method and <code>finish()</code>. But instead of waiting, the picture wasn't shown at all and the presentation was stuck there, without setting the result and finishing the activity.</p> <p>So I started searching for some explanation of time in android and found this explanation:</p> <p><a href="http://developer.android.com/reference/android/os/SystemClock.html#uptimeMillis%28%29" rel="nofollow">Explanation</a></p> <p>I read through it and tried to get a good grasp on whats explained there. But the more I thought about it, the more I got insecure, which is the best way to implement the waiting behavior for my intended purpose. </p> <p>So instead of some code, I am much more interested in, what you would advise me to use and why with a, if possible, detailed explanation.</p> <ol> <li><code>elapsedRealtime()</code>?</li> <li><code>uptimeMillis()</code>?</li> <li><code>System.currentTimeMillis()</code>?</li> </ol>
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    1. COWhat excatly do you want to achieve? You want to change images in ImageView after specified amount of time elapsed?
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    2. COexactly, if the next List element is another image I want the ImageView to wait and then to display is, else to close and return the RESULT_OK to my Presentation and let the presentation, continue, or finish depending on if there are further images, video, etc. left in my list
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    3. COWhat you want is a [Handler](http://developer.android.com/reference/android/os/Handler.html).
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