点击textField的next寻找当前tableView中的下

使用时需要设置textField的tag为indexPath.row的值+1

//自动跳转下一个textField
-(BOOL)textFieldShouldReturn:(UITextField *)textField
{
    [textField resignFirstResponder];
    //循环寻找TableViewCell
    BOOL flag = YES;
    UIView * object = textField;
    do {
        if ([object.superview isKindOfClass:[UITableViewCell class]]) {
            flag = NO;
        }
        object = object.superview;
    } while (flag);
    //记录textField的父视图有几个TextField以及当前是第几个
    int subNumber = 0, indexN = 0;
    NSMutableArray *array = [NSMutableArray array];
    for (id ob2 in object.subviews[0].subviews) {
        if ([ob2 isKindOfClass:[UITextField class]]) {
            [array insertObject:ob2 atIndex:0];
            if ([NSStringFromCGRect(((UIView *)ob2).frame) isEqualToString:NSStringFromCGRect(textField.frame)]) {
                indexN = subNumber;
            }
            subNumber++;
        }
    }
    //跳转当前父视图的下一个textField
    if ((indexN + 1) < subNumber) {
        [array[indexN++] becomeFirstResponder];
        return YES;
    }
    //在其他table的cell中寻找textField并跳转
    NSInteger maxNumber = [self.tableView numberOfRowsInSection:0];
    for (int i = 0;i < maxNumber ; i++) {
        //如果textField的tag等于row+1的话取余之前不用加1
        UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:(textField.tag + i) % maxNumber inSection:0]];
        for (id ob2 in cell.subviews[0].subviews) {
            if ([ob2 isKindOfClass:[UITextField class]]) {
                [ob2 becomeFirstResponder];
                return YES;
            }
        }
    }
    return  YES;
}

写的时候也挺费劲。。原创哦。