android studio SDK stuck while downloading SDK components


AFTER Installing java and setting environment variables ,I installed Android studio for the first time but it stucks while downloading SDK components
I un-installed it and installed again ,But it again stucks ,I wait a lot but there is not any progeress in downloading
Then i cancelled the download and open the android studio, it agin asks to download SDK components ..
will anyone help how to fix it and download SDK componenets???

Source: Android Studio Questions