TabBarItem的图片默认颜色

摘要: 去除 TabBarItem的图片默认颜色

TabBarItem的图片默认颜色 让我甚是头痛，美工MM说灰色的好丑 T_T

1.iOS7以下

查阅了相关文档，这样一个方法

/*  These methods are now deprecated. Please use -initWithTitle:image:selectedImage:.
*/
- (void)setFinishedSelectedImage:(UIImage *)selectedImage withFinishedUnselectedImage:(UIImage *)unselectedImage NS_DEPRECATED_IOS(5_0,7_0,"Use initWithTitle:image:selectedImage: or the image and selectedImage properties along with UIImageRenderingModeAlwaysOriginal");

不过你也看到了，这iOS7开始就弃用了，但至少还能用，如果不介意那烦人的警告的话；

2.iOS7以上

那警告实在闹心，根据警告内容，我又查了资料，结果比较有趣

//UITabBar设置未选中图片
[yourTabBarItem setImage:[[UIImage imageNamed:@"more.png"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];

//UITabBar设置选中图片
[yourTabBarItem setSelectedImage:[[UIImage imageNamed:@"more.png"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];

有一个共同点就是图片多调用了

// Create a version of this image with the specified rendering mode. By default, images have a rendering mode of UIImageRenderingModeAutomatic.
- (UIImage *)imageWithRenderingMode:(UIImageRenderingMode)renderingMode NS_AVAILABLE_IOS(7_0);

也就是设置了UIImageRenderingMode,下面是枚举

它使用UIImageRenderingMode枚举值来设置图片的renderingMode属性。该枚举中包含下列值：
UIImageRenderingModeAutomatic  // 根据图片的使用环境和所处的绘图上下文自动调整渲染模式。
UIImageRenderingModeAlwaysOriginal   // 始终绘制图片原始状态，不使用Tint Color。
UIImageRenderingModeAlwaysTemplate   // 始终根据Tint Color绘制图片，忽略图片的颜色信息。

3.以上只就解决了图片颜色问题还有文字 颜色还是默认的颜色

//设置未选中字体颜色
[[UITabBarItem appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:UIColorFromRGB(0x003500), NSForegroundColorAttributeName, nil]
forState:UIControlStateNormal];

//设置选中字体颜色
[[UITabBarItem appearance] setTitleTextAttributes: [NSDictionary dictionaryWithObjectsAndKeys:
UIColorFromRGB(0xff3500), NSForegroundColorAttributeName, nil]
forState:UIControlStateSelected];

附上一个颜色宏

/**
Create a UIColor from a hex value.

For example, `UIColorFromRGB(0xFF0000)` creates a `UIColor` object representing
the color red.
*/
#define UIColorFromRGB(rgbValue) \
[UIColor \
colorWithRed:((float)((rgbValue & 0xFF0000) >> 16))/255.0 \
green:((float)((rgbValue & 0x00FF00) >> 8))/255.0 \
blue:((float)(rgbValue & 0x0000FF))/255.0 \
alpha:1.0]

参考：http://stackoverflow.com/questions/19563193/uitabbaritem-setfinishedselectedimage-deprecated-in-ios7