I sending datas from mobile to wear, sometimes i will get the datas on Wear but sometimes onDataChanged() doesnt gets called when sending a specific byteArray(convert image into byte array) in PutDataMapRequest.Any clue
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1`onDataChanged` doesn't get invoked if the content doesn't change. Have a look to my answer [here](http://stackoverflow.com/questions/28631002/cannot-send-an-asset-to-an-android-wear-device/28747495#28747495). It is not the best approach of the world, but it is the only way I found to force `onDataChanged` to get called – Blackbelt Apr 16 '15 at 09:27
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Yes. This is done to avoid unnecessary data transfer over bluetooth (which is slow and costs battery life). Its more like 304 status code of the http. – nizam.sp May 04 '15 at 13:44