iOS---------金额转大写

-(NSString *)digitUppercase:(NSString *)numstr{
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];
NSString *prefix;
NSString *suffix;
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=@"";
NSInteger flag = valstr.length - 2;
NSString *head=[valstr substringToIndex:flag - 1];
NSString *foot=[valstr substringFromIndex:flag];
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++) {
NSString * str=[NSString stringWithFormat:@"%x",[head characterAtIndex:i]-'0'];
[ch addObject:str];
}
int zeronum=0;

for (int i=0; i<ch.count; i++) {
int index=(ch.count -i-1)%4;//取段内位置
NSInteger indexloc=(ch.count -i-1)/4;//取段位置
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];
}