Sometimes we need to set images in UINavigation Item ,but when we set images it will show black and white images ,not color images . so for setting the color full images we have to follow some steps.
1: Take the three images according to 1x ,2x,3x images size.
2: Go to image assets and take new Image Set .
3: Now set images on that according to their sizes.
4: Now take UIBarButton on UINavigationItem and set image name (your image set name ) .
5: Now it will show colorful images .
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