一.目的
1. 金额小写转化成大写. 如 123456.65 --> 壹拾贰万叁仟肆佰伍拾陆元陆角伍分
2. 只能处理13位数的金额,并且只能处理到小数点后两位.
二.代码
#import "ViewController.h"
#define ScreenWidth [UIScreen mainScreen].bounds.size.width
#define ScreenHeight [UIScreen mainScreen].bounds.size.height
@interface ViewController ()
@property (nonatomic, strong) UILabel * smallLabel; //显示小写金额
@property (nonatomic, strong) UILabel * bigLabel; //显示大写金额
@end
@implementation ViewController
- (void)viewDidLoad
{
[super viewDidLoad];
[self initUI];
}
- (void)initUI
{
NSString * money = @"123456.65";
self.smallLabel = [[UILabel alloc] init];
self.smallLabel.frame = CGRectMake(10, 30, ScreenWidth - 20, 40);
self.smallLabel.text = money;
self.smallLabel.textAlignment = NSTextAlignmentCenter;
[self.view addSubview:self.smallLabel];
//大写
self.bigLabel = [[UILabel alloc] init];
self.bigLabel.frame = CGRectMake(10, 100, ScreenWidth - 20, 40);
self.bigLabel.text = [self changetoBigMoney:money];
self.bigLabel.textAlignment = NSTextAlignmentCenter;
[self.view addSubview:self.bigLabel];
}
//可以直接拷贝该封装的方法
#pragma mark 金币大小写 --> 封装的方法
- (NSString *)changetoBigMoney:(NSString *)numstr
{
//转化成double类型
double numberals = [numstr doubleValue];
NSArray *numberchar = @[@"零",@"壹",@"贰",@"叁",@"肆",@"伍",@"陆",@"柒",@"捌",@"玖"];
NSArray *inunitchar = @[@"",@"拾",@"佰",@"仟"];
NSArray *unitname = @[@"",@"万",@"亿",@"万亿"];
//金额乘以100转换成字符串（去除圆角分数值）
NSString *valstr=[NSString stringWithFormat:@"%.2f",numberals];
NSLog(@"valstr: %@",valstr);
NSString *prefix;
NSString *suffix;
NSLog(@"%lu",(unsigned long)valstr.length);
if (valstr.length <= 2)
{
prefix=@"零元";
if (valstr.length == 0)
{
suffix=@"零角零分";
}
else if (valstr.length == 1)
{
suffix=[NSString stringWithFormat:@"%@分",[numberchar objectAtIndex:[valstr intValue]]];
}
else
{
NSString *head = [valstr substringToIndex:1];
NSString *foot = [valstr substringFromIndex:1];
suffix=[NSString stringWithFormat:@"%@角%@分",[numberchar objectAtIndex:[head intValue]],[numberchar objectAtIndex:[foot intValue]]];
}
}
else
{
prefix=@"";
suffix=@"";
int flag = (int)valstr.length - 2;
NSLog(@"flag: %d",flag);
NSString *head = [valstr substringToIndex:flag-1];
NSLog(@"head: %@",head);
NSString *foot = [valstr substringFromIndex:flag];
NSLog(@"foot: %@",foot);
if (head.length>13)
{
return @"数值太大（最大支持13位整数），无法处理";
}
//处理整数部分
NSMutableArray * ch = [[NSMutableArray alloc]init];
for (int i = 0; i < head.length; i++)
{
NSLog(@"head[i]: %hu",[head characterAtIndex:i]);
NSString * str=[NSString stringWithFormat:@"%x",[head characterAtIndex:i]-‘0‘];
[ch addObject:str];
NSLog(@"ch: %@",ch);
}
NSLog(@"ch_All: %@",ch);
int zeronum = 0;
NSLog(@"ch.count: %ld",ch.count);
for (int i = 0; i < ch.count; i++)
{
int index = (ch.count - i - 1) % 4;//取段内位置
NSLog(@"index: %d",index);
int indexloc = (int)(ch.count - i - 1) / 4;//取段位置
NSLog(@"indexloc: %d",indexloc);
NSLog(@"ch[i]: %@",[ch objectAtIndex:i]);
if ([[ch objectAtIndex:i] isEqualToString:@"0"])
{
zeronum++;
}
else
{
if (zeronum != 0)
{
if (index != 3)
{
prefix=[prefix stringByAppendingString:@"零"];
}
zeronum = 0;
}
prefix = [prefix stringByAppendingString:[numberchar objectAtIndex:[[ch objectAtIndex:i]intValue]]];
prefix = [prefix stringByAppendingString:[inunitchar objectAtIndex:index]];
}
if (index == 0 && zeronum < 4)
{
prefix=[prefix stringByAppendingString:[unitname objectAtIndex:indexloc]];
}
}
prefix = [prefix stringByAppendingString:@"元"];
//处理小数位
if ([foot isEqualToString:@"00"])
{
suffix =[suffix stringByAppendingString:@"整"];
}
else if ([foot hasPrefix:@"0"])
{
NSString * footch=[NSString stringWithFormat:@"%x",[foot characterAtIndex:1]-‘0‘];
suffix = [NSString stringWithFormat:@"%@分",[numberchar objectAtIndex:[footch intValue]]];
}
else
{
NSString * headch=[NSString stringWithFormat:@"%x",[foot characterAtIndex:0]-‘0‘];
NSString * footch=[NSString stringWithFormat:@"%x",[foot characterAtIndex:1]-‘0‘];
suffix = [NSString stringWithFormat:@"%@角%@分",[numberchar objectAtIndex:[headch intValue]],[numberchar objectAtIndex:[footch intValue]]];
}
}
return [prefix stringByAppendingString:suffix];
}
@end
原文：http://www.cnblogs.com/mancong/p/5413753.html