If you are facing issue of AAPT: libpng error: Not a PNG file
Error:Execution failed for task ':app:mergeDebugResources'.
> Error: java.lang.RuntimeException: Some file crunching failed, see logs for details
Solution :
Then you need to check your app's all .png file of android project and make sure you have not change any .jpeg to .png format by mistake . Because it might happen that in previous android studio it might working but with update of new android studio 2.2 it will give Error .
Error:Execution failed for task ':app:mergeDebugResources'.
> Error: java.lang.RuntimeException: Some file crunching failed, see logs for details
Solution :
Then you need to check your app's all .png file of android project and make sure you have not change any .jpeg to .png format by mistake . Because it might happen that in previous android studio it might working but with update of new android studio 2.2 it will give Error .
