手机号码输入

本人iOS菜鸟一枚, 不太会写文章, 语文从来没及格过, 进入正题

需求分析

看图说话:

22222.gif

一个个输入号码太麻烦了 所以就赋值粘贴了
主要的功能

• 当刚进来的时候有一个空的输入框
• 输入一个号码为正确的号码时再添加一个空的输入框(输入错误不添加给提示)
• 删除号码的功能

做了个简易的demo

判断思路

整个页面上的控件就不用多说了 就是一个UICollectionView

基本上都是采用Block传值的, cell里注册了个通知, 当前的textFeild的内容改变就会收到这个通知, 一大部分逻辑在这里, 直接上代码

- (void)textFeildDidChange:(NSNotification *)noti{
    
    if (noti.object == self.textFeild){
        
        if ([self isMobile:self.textFeild.text]) {
            self.item.isNumber = YES;
        } else {
            self.item.isNumber = NO;
        }
        
        self.item.number = self.textFeild.text;
        
        if (self.textFeildChangeBlock) {
            self.textFeildChangeBlock(self, self.item);
        }
        
        if (self.textFeild.text.length == 0){
            if (self.textFeildEmptyString) {
                self.textFeildEmptyString(self, self.item);
            }
        }
        
        if (self.textFeild.text.length > 10) {
            self.textFeild.text = [self.textFeild.text substringToIndex:11];
            if (![self isMobile:self.textFeild.text]) {
                UIAlertView * alert = [[UIAlertView alloc]initWithTitle:@"提示" message:@"请输入正确的手机号" delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil];
                [alert show];
            }
        }
        
        if ([self isMobile:self.textFeild.text]) {
            self.textFeild.backgroundColor = RGBColor(242, 245, 235);
            self.textFeild.textColor = RGBColor(0, 0, 0);
            if (self.nextNumberTextFeildBlock) {
                self.nextNumberTextFeildBlock();
            }
        } else {
            self.textFeild.backgroundColor = [UIColor whiteColor];
            self.textFeild.textColor = RGBColor(252, 77, 48);
        }
    }
}

输入的号码每改变一次, 就会调用这个方法, 先是判断是否是手机号, 将输入框的手机号赋值给当前cell绑定的Item上 然后传出去 更新collectionView里的数组的对应的手机号码
手机号不能大于11位, 所以做了一个截取的操作, 当是11为的时候, 判断是不是手机号, 不是的话, 给一个提示. 再一次判断是否是手机号是为了能添加下一个输入框, 让是手机号的cell高亮, 字体颜色高亮
中间有一个判断长度是否为0的操作 是删除空的cell的

下面我们看看这些Block操作的代码

__weak typeof(self)weakSelf = self;
    
    [cell setTextFeildChangeBlock:^(NumberCollectionCell *cell, NumberItem *item) {
        
        NSIndexPath *indexPath2 = [collectionView indexPathForCell:cell];
        
        [weakSelf.numbers replaceObjectAtIndex:indexPath2.row withObject:item];
        
    }];
    
    [cell setNextNumberTextFeildBlock:^{
        
        NumberItem *item = [weakSelf.numbers lastObject];
        
        NSString *number = item.number;
        
        if ([weakSelf isMobile:number]) {
            
            [weakSelf.numbers addObject:[NumberItem numberItemWithNumber:@"" isNumber:NO]];
            
            NSIndexPath *indexPath1 = [NSIndexPath indexPathForItem:weakSelf.numbers.count - 1 inSection:0];
            
            [collectionView insertItemsAtIndexPaths:@[indexPath1]];
            
            NSInteger count = weakSelf.numbers.count;
            
            NSInteger cloum = weakSelf.cloum;
            
            if ((count - 1) % cloum == 0) {
                
                NSInteger lines = count % cloum == 0 ? count / cloum : count / cloum + 1;
                
                CGPoint offset = CGPointMake(0, lines * (weakSelf.itemHeight + 10) + 10);
                
                CGFloat height = self.bounds.size.height;
                
                if (offset.y > height) {
                    
                    offset.y = offset.y - height;
                    
                    offset.y = offset.y + 10;
                    
                    collectionView.contentOffset = offset;
                    
                }
                
            }
            
            NumberCollectionCell *cell1 = (NumberCollectionCell *)[collectionView cellForItemAtIndexPath:indexPath1];
            
            [cell1 textFeildBecomeFirstResponder];
        }
        
    }];
    
    [cell setTextFeildEmptyString:^(NumberCollectionCell *cell, NumberItem *item) {
        
        NSIndexPath *indexPath = [weakSelf indexPathForCell:cell];
        
        if (indexPath.row != weakSelf.numbers.count - 1) {
            
            NSIndexPath *indexPath1 = [NSIndexPath  indexPathForItem:self.numbers.count -1 inSection:0];
            
            NumberCollectionCell *cell1 = (NumberCollectionCell *)[collectionView cellForItemAtIndexPath:indexPath1];
            
            [cell1 textFeildBecomeFirstResponder];
            
            [weakSelf.numbers removeObjectAtIndex:indexPath.row];
            
            [weakSelf deleteItemsAtIndexPaths:@[indexPath]];
        }
    }];

注意点

• 添加的时候之所以没有给动画, 是因为要让即将出现的cell的textField成为第一响应者, 加了动画有一个时间差, 拿不到这个cell

没有一点注释, 有需要可以私信我

第一次发文章, 不会分享, 将就看一下吧, 有什么问题可以评论, 当然也可以加我QQ互相交流847881570 备注: