**** 在用到3D-Touch的时候,想到了UIPreviewAction随性就写了一下,但是看到字体的颜色不能修改,这时候就想到了用一个运行时尝试修改一下,没想到还真成功了.下面上代码 ****
@property (nonatomic,strong) UIColor *tintColor; /**< 统一按钮样式 不写系统默认的蓝色*/
- (UIColor *)tintColor {
return objc_getAssociatedObject(self, @selector(tintColor));
}
- (void)setTintColor:(UIColor *)tintColor {
unsigned int count = 0;
Ivar *ivars = class_copyIvarList([UIPreviewAction class], &count);
for(int i = 0;i < count;i ++){
Ivar ivar = ivars[i];
NSString *ivarName = [NSString stringWithCString:ivar_getName(ivar) encoding:NSUTF8StringEncoding];
NSLog(@"%@",ivarName);
//标题颜色
if ([ivarName isEqualToString:@"_color"] && tintColor) {
[self setValue:tintColor forKey:@"color"];
}
}
free(ivars);
objc_setAssociatedObject(self, @selector(tintColor), tintColor, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
这时候在外部调用
#pragma mark -- /*3DTouch-Delegate*/
- (NSArray<id<UIPreviewActionItem>> *)previewActionItems {
__weak typeof(self) weakSelf = self;
UIPreviewAction *saveAction = [UIPreviewAction actionWithTitle:@"保存到相册" style:UIPreviewActionStyleDefault handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
UIImageWriteToSavedPhotosAlbum(weakSelf.imageView.image, weakSelf, @selector(image:didFinishSavingWithError:contextInfo:),nil);
}];
saveAction.tintColor = [UIColor blackColor];
UIPreviewAction *cancellAction = [UIPreviewAction actionWithTitle:@"取消" style:UIPreviewActionStyleDefault handler:^(UIPreviewAction * _Nonnull action, UIViewController * _Nonnull previewViewController) {
}];
cancellAction.tintColor = [UIColor blackColor];
return @[saveAction,cancellAction];
}
