Android while loop in asyntask on UiThread [closed]

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I am working on App, in which i have 3 imageview and i want to do these imagesviews changes in loop continuously.

Answer 1

I think what you can do is, in doInBackground() you need to call publishProgress() that will result in a callback to onProgrssUpdate(), In onProgressUpdate(), you can make the currentlyVisible imageView to invisible and make next imageView visible.

Answer 2

onPostExecute() and onPreExecute() are running on UI thread already. For communicating in Background you could use onProgressUpdate or send Handler messages to ImageView to safely communicate.

Here is good example of Lars Vogel http://www.vogella.com/tutorials/AndroidBackgroundProcessing/article.html