iOS 修改同一套图的颜色

第一种：很简单，但是只能更改图片中线条的颜色，不能更改填充的颜色 
步骤：1 在图片管理器中选中图片 
2: 
3:在代码中更改uiimageView颜色：

      imgV.tintColor = [UIColor blackColor];
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第二种：可以将里面的内容的颜色为想要的颜色 
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2 在创建的类别写如下代码

@interface UIImage (UIImage_Tint)- (UIImage *) imageWithTintColor:(UIColor *)tintColor;- (UIImage *) imageWithGradientTintColor:(UIColor *)tintColor;@end
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3 在.m文件中

 #import "UIImage+UIImage_Tint.h"@implementation UIImage (UIImage_Tint)- (UIImage *) imageWithTintColor:(UIColor *)tintColor{    return [self imageWithTintColor:tintColor blendMode:kCGBlendModeDestinationIn];}- (UIImage *) imageWithGradientTintColor:(UIColor *)tintColor{    return [self imageWithTintColor:tintColor blendMode:kCGBlendModeOverlay];}- (UIImage *) imageWithTintColor:(UIColor *)tintColor blendMode:(CGBlendMode)blendMode{    UIGraphicsBeginImageContextWithOptions(self.size, NO, 0.0f);    [tintColor setFill];    CGRect bounds = CGRectMake(0, 0, self.size.width, self.size.height);    UIRectFill(bounds);    //Draw the tinted image in context    [self drawInRect:bounds blendMode:blendMode alpha:1.0f];    if (blendMode != kCGBlendModeDestinationIn) {        [self drawInRect:bounds blendMode:kCGBlendModeDestinationIn alpha:1.0f];    }    UIImage *tintedImage = UIGraphicsGetImageFromCurrentImageContext();    UIGraphicsEndImageContext();    return tintedImage;}
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