ios中注意项

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

1.当导入第三方库出现不支持ARC模式，可以在项目-》Build Phases中对第三方类文件添加Compiler Flags(-fno-objc-arc)

2.获取UITableViewCell中所有子控件

// 获取当前tableView中的所有cell

NSArray
*array = [self.tableView visibleCells];

for (NSInteger
i = 0; i < array.count; i++) {

       // 判断是否是自定义的chatBgCell

        if
([[array[i] class] isSubclassOfClass:[chatBgCell class]]) {

            // 获取cell中所有子控件

            NSArray
*array1 = [[array[i] contentView] subviews];

            for
(UIImageView *im in array1) {

                if
(im.subviews) {

                    for
(UIImageView *imSub in im.subviews) {

                        if
([imSub.class
isSubclassOfClass:[UIImageView class]]) {

                            [imSub removeFromSuperview];

                        }

                    }

                }

            }

        }

    }