iOS UIAlertController颜色字号更改

NSMutableAttributedString *attTitle = [[NSMutableAttributedString alloc]initWithString:@"标题1" attributes:@{NSForegroundColorAttributeName:[UIColor blueColor],NSFontAttributeName:[UIFont systemFontOfSize:17]}];

NSMutableAttributedString *attMessage = [[NSMutableAttributedString alloc]initWithString:@"message" attributes:@{NSForegroundColorAttributeName:[UIColor purpleColor],NSFontAttributeName:[UIFont systemFontOfSize:14]}];

UIAlertController *action = [UIAlertController alertControllerWithTitle:@"标题1" message:@"message" preferredStyle:UIAlertControllerStyleActionSheet];

[action setValue:attTitle forKey:@"attributedTitle"]; [action setValue:attMessage forKey:@"attributedMessage"];

UIAlertAction *alert1 = [UIAlertAction actionWithTitle:@"拍摄" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) { [self loadCameraMovie];
}];

[alert1 setValue:[UIColor greenColor] forKey:@"titleTextColor"];

[action addAction:alert1];

UIAlertAction *alert2 = [UIAlertAction actionWithTitle:@"拍照" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) { [self loadCamera];
}];

[alert2 setValue:[UIColor cyanColor] forKey:@"titleTextColor"]; [action addAction:alert2];

UIAlertAction *alert3 = [UIAlertAction actionWithTitle:@"从相册选择视频" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) { [self loadPhotoLibraryMovie];
}];

[alert3 setValue:[UIColor orangeColor] forKey:@"titleTextColor"];

[action addAction:alert3];

UIAlertAction *alert4 = [UIAlertAction actionWithTitle:@"从相册选择照片" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) { [self loadPhotoLibraryPhoto];
}];

[alert4 setValue:[UIColor brownColor] forKey:@"titleTextColor"];

[action addAction:alert4];

UIAlertAction *alert5 = [UIAlertAction actionWithTitle:@"从相册选择多张照片" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) { [self loadQBImagePickerController];
}];

[alert5 setValue:[UIColor blackColor] forKey:@"titleTextColor"];

[action addAction:alert5];

UIAlertAction *can = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) { }];

[can setValue:[UIColor redColor] forKey:@"titleTextColor"];

[action addAction:can];

[self presentViewController:action animated:YES completion:nil];