定制AlertController提示

/**
*  定制弹窗alertVC
*  @param title   标题
*  @param message 信息
*  @param  cancel 取消标题(如果需要取消按钮 该值不能为空；不需要取消按钮该值设为@"")
*  @param completion 点击事件
*  用法士例

[self showAlertWithTitle:@"hahfh" message:@"哈哈哈" cancelTitle:@"取消" completion:^(BOOL cancelled) {

 if (cancelled == NO) {
NSLog(@"确定按钮的点击事件");
}else {
NSLog(@"取消按钮的点击的时间");

}

}];

*/


- (void)showAlertWithTitle:(NSString *)title
               message:(NSString *)message cancelTitle:(NSString *)cancel
                 completion:(void(^) (BOOL cancelled))completion;

具体实现：

   if (completion) {
    _completion = completion;
}

//设置 message title 的属性
 UIAlertController *alerVC = [UIAlertController alertControllerWithTitle:title message:message preferredStyle:UIAlertControllerStyleAlert];
NSMutableAttributedString *Message = [[NSMutableAttributedString alloc] initWithString:message];
[Message addAttribute:NSForegroundColorAttributeName value:Color_Alert_Message range:NSMakeRange(0, [Message length])];
[Message addAttribute:NSFontAttributeName value:FONT(14) range:NSMakeRange(0, [Message length])];

[ alerVC setValue:Message forKey:@"attributedMessage"];

NSMutableAttributedString *Title = [[NSMutableAttributedString alloc] initWithString:title];
[Title addAttribute:NSForegroundColorAttributeName value:Color_Alert_Message range:NSMakeRange(0, [Title length])];
[Title addAttribute:NSFontAttributeName value:FONT(14) range:NSMakeRange(0, [Title length])];

[ alerVC setValue:Title forKey:@"attributedTitle"];

// 2.创建并添加按钮
__weak typeof(self) wSelf = self;
UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
    NSLog(@"OK Action");

}];
[okAction setValue:Color_Alert_Blue forKey:@"_titleTextColor"];


alerVC.view.backgroundColor = Color_White;
alerVC.view.layer.cornerRadius = 4;
alerVC.view.clipsToBounds = YES;
UILabel *appearanceLabel = [UILabel appearanceWhenContainedIn:UIAlertController.class, nil];
UIFont *font = [UIFont systemFontOfSize:14];
appearanceLabel.font = font;
[self presentViewController:alerVC animated:YES completion:nil];



UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:cancel style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
    NSLog(@"Cancel Action");

}];
[cancelAction setValue:Color_Alert_Gray forKey:@"_titleTextColor"];


[alerVC addAction:okAction];

if (cancel.length > 0 ) {
    [alerVC  addAction:cancelAction];
    
}

提示：
如果提示是分行显示的比如2行：
可以分别设置title 和message