UINavigationBar中的透明图像

Question

i have made a simple design in photoshop when i tried to put it in Xcode i had some problems with NavigationBar

i used this code to change the UINavigationBar background image (a PNG transparent image):

UINavigationBar *navBar = [[self navigationController]navigationBar];
[navBar setBackgroundImage[UIImageimageNamed:@"navBar2.png"]forBarMetrics:UIBarMetricsDefault]

everything works fine but the problem is that the image appears in the navigationBar without transparency.

please someone help me to fix the transparency issue i search everywhere without any satisfied answer
NB! Im using IOS 5

Answer 1

您可以尝试将导航栏设置为半透明。

[navBar setTranslucent: YES];

Answer 2

Do you have it in your Storyboard? Try change the style of your navigation bar into black translucent.

Answer 3

What you can do is set the background color of the view of the navigationController the same as the backgrouond color of the main view.

//Set your view's background color    
[self.view setBackgroundColor:[UIColor colorWithPatternImage:[UIImage imageNamed:@"view_background"]]];

//Set your custom image for the navigationController
[self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed: @"navigation_bar_image"] forBarMetrics:UIBarMetricsDefault];

//And then set the background color of the navigationController the same as the one of the view
[self.navigationController.view setBackgroundColor:[UIColor colorWithPatternImage:[UIImage imageNamed:@"view_background"]]];

Answer 4

[self.navigationBar setBackgroundImage:[UIImage new] forBarMetrics:UIBarMetricsDefault];
[self.navigationBar setShadowImage:[UIImage new]];
[self.navigationBar setTranslucent:YES];

And make sure you set up tint color to default.