iOS-金额小写转大写

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