how to make a gradient border of UIView?

how to make a gradient border of UIView?

References

Reference NO 1

http://stackoverflow.com/questions/15193993/how-to-make-a-gradient-border-of-uiview

Reference NO 2

http://stackoverflow.com/questions/2306043/uiview-border-with-fade-or-blur-effect

Reference NO 3

http://stackoverflow.com/questions/15974537/modern-technique-of-adding-gradient-to-uiview

Reference NO 4

http://stackoverflow.com/questions/15912464/how-make-border-between-two-uiviews-look-easier-on-the-eyes-programmatically

Reference NO 5

http://www.raywenderlich.com/32283/core-graphics-tutorial-lines-rectangles-and-gradients

Reference NO 6

http://css-tricks.com/examples/GradientBorder/

Reference NO 7

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Reference NO 8

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