Showing posts with label UIToolbar setShadowImage forToolbarPosition example. Show all posts
Showing posts with label UIToolbar setShadowImage forToolbarPosition example. Show all posts

Tuesday, June 11, 2013

UIToolbar setShadowImage forToolbarPosition example in Objective C (iOS).

UIToolbar setShadowImage forToolbarPosition

Sets the image to use for the toolbar shadow in a given position.

- (void)setShadowImage:(UIImage *)shadowImage forToolbarPosition:(UIToolbarPosition)topOrBottom

Parameters of [UIToolbar setShadowImage forToolbarPosition]
shadowImage
The image to use for the toolbar shadow in the position specified by topOrBottom.
topOrBottom
A toolbar position constant. You can use this parameter to indicate whether the shadowImage is intended for a toolbar at the top or bottom of the view.

Discussion of [UIToolbar setShadowImage forToolbarPosition]
When the shadowImage parameter is nil, the default shadow will be used. When non-nil, the shadowImage property is a custom shadow image to show instead of the default. Using the topOrBottom parameter, you can set a different shadow for toolbars at the top and bottom of the view. For a custom shadow image to be shown, a custom background image must also be set with the setBackgroundImage:forToolbarPosition:barMetrics: method. If the default background image is used, then the default shadow image will be used regardless of the value of the shadowImage parameter.

UIToolbar setShadowImage forToolbarPosition example.
Add this line also

[toolbar setShadowImage:_maskedImage forToolbarPosition:UIToolbarPositionAny];
But beware this will only work in iOS6

Example of [UIToolbar setShadowImage forToolbarPosition].
- (void)setTransparent
{
    //iOS3+
    self.backgroundColor = [UIColor clearColor];

    //iOS5+
    if ([self respondsToSelector:@selector(setBackgroundImage:forToolbarPosition:barMetrics:)])
    {
        [self setBackgroundImage:[[UIImage new] autorelease] forToolbarPosition:UIToolbarPositionAny barMetrics:UIBarMetricsDefault];
    }
    //iOS6+
    if ([self respondsToSelector:@selector(setShadowImage:forToolbarPosition:)])
    {
        [self setShadowImage:[[UIImage new] autorelease] forToolbarPosition:UIToolbarPositionAny];
    }
}

End of UIToolbar setShadowImage forToolbarPosition example article.