Question

我试过这样做：

[toolbar setTint:[UIColor colorWithPatternImage:[UIImage imageNamed:@"thingFromMyBundle.png"]]];

但它刚刚变黑了。起初我假设你不允许用纹理“着色”，但我最近看到的应用程序可以做到这一点。我错过了什么吗？

感谢。

Answer 1

将2个文件添加到您的项目中，例如，将它们称为UINavigationBar-CustomTexture.h和UINavigationBar-CustomTexture.m，在这些文件中输入：

.h文件：

#import <UIKit/UIKit.h>
@interface UINavigationBar (CustomTexture)
@end

.m文件：

#import "UINavigationBar-CustomTexture.h"

@interface UIView (CustomTexture)
- (void)drawLayer:(CALayer *)layer inContext:(CGContextRef)ctx;
@end

@implementation UINavigationBar (CustomTexture)
- (void)drawLayer:(CALayer *)layer inContext:(CGContextRef)ctx {
    if ([self isMemberOfClass:[UINavigationBar class]]){
        UIImage *image = [UIImage imageNamed:@"myImage.png"];
        CGContextScaleCTM(ctx, 1.0f, -1.0f);
        CGContextDrawImage(ctx, CGRectMake(0, -image.size.height, self.frame.size.width, self.frame.size.height), image.CGImage);
    }else{
        [super drawLayer:layer inContext:ctx];
    }
}
@end

在实例化导航控制器的地方包含.h文件。将您的png文件设置为320x44。根据您的纹理，将导航栏的色调颜色更改为这样（使导航栏上的按钮看起来更好）：

[self.navigationController.navigationBar setTintColor:[UIColor colorWithHue:0 saturation:0 brightness:0.5f alpha:0.1f]];

Answer 2

以下是我解决这个问题的方法：



_titleToolbar= [[UIToolbar alloc] initWithFrame:CGRectMake(0.0f, 0.0f, kDeviceWidth, 34.0f)];
[_titleToolbar setTranslucent:YES];
[_titleToolbar setBackgroundColor:[UIColor clearColor]];

CALayer* backgroundLayer = [CALayer layer];
[backgroundLayer setFrame:CGRectMake(0, 0, kDeviceWidth, _titleToolbar.frame.size.height)];

UIImage* patternImage = [UIImage deviceImageNamed:@"topToolbarBackground"];
[backgroundLayer setBackgroundColor:[UIColor colorWithPatternImage:patternImage].CGColor];
[[_titleToolbar layer] insertSublayer:backgroundLayer atIndex:0];

_titleToolbar= [[UIToolbar alloc] initWithFrame:CGRectMake(0.0f, 0.0f, kDeviceWidth, 34.0f)]; [_titleToolbar setTranslucent:YES]; [_titleToolbar setBackgroundColor:[UIColor clearColor]]; CALayer* backgroundLayer = [CALayer layer]; [backgroundLayer setFrame:CGRectMake(0, 0, kDeviceWidth, _titleToolbar.frame.size.height)]; UIImage* patternImage = [UIImage deviceImageNamed:@"topToolbarBackground"]; [backgroundLayer setBackgroundColor:[UIColor colorWithPatternImage:patternImage].CGColor]; [[_titleToolbar layer] insertSublayer:backgroundLayer atIndex:0];

我可以将纹理应用于UIToolbar吗？

2 个答案: