IOS remove the border of the navigation bar black line & Remove the border of the search box black line and the shadow of the text input box-Solution

Remove the border black line from the navigation bar

In Viewdidload:

    [Self.navigationController.navigationBar Setbackgroundimage:[[uiimage alloc] init] Forbarmetrics: Uibarmetricsdefault];    Self.navigationController.navigationBar.shadowImage = [[UIImage alloc] init];

Remove the border black line from the search box

In Viewdidload:

[Self.textsearchbar Setbackgroundimage:[[uiimage alloc] init]];

Remove the shadow from the text input box of the search box

In Stroryboard:

Check the search box-right in attribute Inspector--view select clear color in the tint's color bar

Reference Links:

Http://stackoverflow.com/questions/19047286/remove-navigationbars-bottom-border-ios7