UIAlertController 两个按钮的样式

   UIAlertAction *cancelAction = [UIAlertActionactionWithTitle:@"拍照"style:UIAlertActionStyleDestructivehandler:^(UIAlertAction *_Nonnull action) {

        NSLog(@"拍照");   

    }];

    UIAlertAction *sureAction = [UIAlertActionactionWithTitle:@"相册"style:UIAlertActionStyleDestructivehandler:^(UIAlertAction *_Nonnull action) {

       NSLog(@"相册");

    }];

    UIAlertController *alertVC = [UIAlertControlleralertControllerWithTitle:@"提示"message:@"请选择调用方式"preferredStyle:UIAlertControllerStyleAlert];

    [alertVC addAction:cancelAction];

    [alertVC addAction:sureAction];

    [self presentViewController:alertVC animated:YEScompletion:^{

    }];