最近又在搞金额，有时候会有类似0.0100，有时候会有类似3.98000001样子，这时候需要把金额保留两位有效数字，有时候需要保留一位有效数字，有时候金额返回整数，通过这个方法可以直接恢复到你想要的样子，如下：
-(NSString *)stringByYouWantWithOriginString:(NSString *)originString{
NSString *MM = @"";
if ([originString containsString:@"."]) {
NSArray *array_XString = [originString componentsSeparatedByString:@"."];
NSString *string_XLast = array_XString.lastObject;
if (string_XLast.length == 1 ) {
MM = [NSString stringWithFormat:@"%.1f",[originString floatValue]];
}else if (string_XLast.length >=2){
MM = [NSString stringWithFormat:@"%.2f",[originString floatValue]];
}
if (string_XLast.length >=2){
if ([MM hasSuffix:@"00"]) {
MM = [NSString stringWithFormat:@"%.0f" , [MM floatValue]];
}else if ([MM hasSuffix:@"0"]){
MM = [NSString stringWithFormat:@"%.1f" , [MM floatValue]];
}
}else if (string_XLast.length ==1 ){
if ([MM hasSuffix:@"0"]) {
MM =[NSString stringWithFormat:@"%.0f" , [MM floatValue]];
}
}
}else{
MM =originString;
}
if ([MM hasSuffix:@".00"]) {
MM = [NSString stringWithFormat:@"%.0f",[MM floatValue]];
}
return MM;
}
