iOS NSScanner

NSString *string = @"My age is d 23 34.0 now i will ,get off work!my name is wang tian :qiao";
int i;
float f;
NSString *theString = @"My age is";
NSString *resultString;
NSString *dString;

//扫描字符串------函数：scanString
NSScanner *theScanner = [NSScanner scannerWithString:string ];

//设置是否忽略大小写，如果设置忽略大小写，那么不符合扫描规则的，将不会进行扫描。默认请看
//   [theScanner setCaseSensitive:NO];

//扫描时，忽略某一个字符"z".
// [theScanner setCharactersToBeSkipped:[NSCharacterSet characterSetWithCharactersInString:@"z"]];

//扫描“theString”字符串
[theScanner scanString:theString intoString:&resultString];
NSLog(@"resultString is %@",resultString);

//扫描字符串中的d字符-函数：scanString
[theScanner scanString:@"d" intoString:&dString];
NSLog(@"d string is %@",dString);

//扫描字符串中的整型数据  --函数：scanInteger
[theScanner scanInteger:&i];
NSLog(@"intergent is %d",i);

//扫描字符串中的浮点型数据  --函数：scanFloat
[theScanner scanFloat:&f];
NSLog(@"float is %f",f);

//将十六进制的字符串转化为double类型的数据。 --函数：scanHexDouble  输出会出现问题。
double HexDouble;
[[NSScanner scannerWithString:@"A1" ]scanHexDouble:&HexDouble];

NSLog(@"the Hex is EE is Equal doubleValue:%f",HexDouble);

//将十六进制的字符串转化为int类型的数据。 --函数:scannerWithString
unsigned int HexInt;
[[NSScanner scannerWithString:@"EE" ]scanHexInt:&HexInt];
NSLog(@"the Hex is EE is Equal intValue:%d",HexInt);

//创建一个字符集，并扫描到这个字符集之前并保存扫描过的字符:    --函数：scanUpToCharactersFromSet。
NSString *charaString;
NSCharacterSet *characterSet = [NSCharacterSet characterSetWithCharactersInString:@","];
[theScanner scanUpToCharactersFromSet:characterSet intoString:&charaString];
NSLog(@"the charaString is %@",charaString);

//过滤掉某一些字符比如“,”号    函数:scanString
[theScanner scanString:@"," intoString:NULL];

//扫描字符串，在碰到指定的字符串时，获取其之前的字符数据。但不包含给定的字符，比如“k!” --函数：scanUpToString。
NSString *scanUpToString ;
[theScanner scanUpToString:@"k!" intoString:&scanUpToString];
NSLog(@"scanUpToString is %@",scanUpToString);

//设定下一次的扫描位置：并验证是否正确。 --函数：scanUpToCharactersFromSet
[theScanner setScanLocation:50];
NSString *ccString;
NSCharacterSet *rSet = [NSCharacterSet characterSetWithCharactersInString:@":"];
[theScanner scanUpToCharactersFromSet:rSet intoString:&ccString];
NSLog(@"ScanLocation's string %@",ccString);

//返回正在扫描的位置  函数:position

NSUInteger position;
position  = [theScanner scanLocation];
NSLog(@"scanLocation is %d",position);

//返回扫描的字符串   --函数：string

NSString *scanString = [theScanner string];
NSLog(@"string is %@",scanString);