iOS之修改项目BUG之旅--（三）

问题：在一个图片浏览器放大当前图片的时候，点击删除，出现提示框是否删除图片
解决方案：
一.使用UIAlertView解决（ps：这是ios8以前的方法）

//点击事件- (void)photoBrowserButtons:(CHPhotoBrowserButtons *)buttons deleteBtn:(UIButton *)deleteBtn {UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"你确定要删除照片吗？" delegate:self   cancelButtonTitle:@"取消" otherButtonTitles: @"确定",nil];[alert show];}//UIAlertViewDelegate协议实现的方法-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{    if (buttonIndex == 1) {        [CHPhotoScrollHttpTool   deletedFamilyPhoto:self.photos[self.currentPhotoIndex]                                        success:^{                                                [MBProgressHUD showSuccess:nil];                                                [[NSNotificationCenter defaultCenter]  postNotificationName:NOTIFICATION_DIDDETLE_PIC object:nil];                                               [self mcancel:nil];                                                                                         }                                           failure:^{                                              [MBProgressHUD showError:nil];                                              [self mcancel:nil]; }];[buttonsView hide];isShow = NO;    }}

二.使用UIAlertController（ps：ios8以后使用的方法）

//点击事件- (void)photoBrowserButtons:(CHPhotoBrowserButtons *)buttons deleteBtn:(UIButton *)deleteBtn {//创建UIAlertController    UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"提示" message:@"你确定要删除照片吗？" preferredStyle:(UIAlertControllerStyleAlert)];//创建确定按钮    UIAlertAction *defult = [UIAlertAction actionWithTitle:@"确定" style:(UIAlertActionStyleDefault) handler:^(UIAlertAction * action) {     NSLog(@"点击确定后执行的事件");        }];//创建取消按钮            UIAlertAction *cancel = [UIAlertAction actionWithTitle:@"取消" style:(UIAlertActionStyleCancel) handler:nil];//将UIAlertAction添加到UIALertController        [alertController addAction:defult];    [alertController addAction:cancel];//获取当前ViewController，并present弹出模态UIAlertController//注意，这里presentViewController前面的对象必须为ViewController    [[self getPresentedViewController] presentViewController:alertController animated:YES completion:nil];    }//获取当前屏幕中present出来的Viewcontroller- (UIViewController *)getPresentedViewController{    UIViewController *appRootVC = [UIApplication sharedApplication].keyWindow.rootViewController;    UIViewController *topVC = appRootVC;    if (topVC.childViewControllers.count>0) {        topVC = [topVC.childViewControllers lastObject];    }    return topVC;}