iOS十六进制和字符串的相互转换
转换代码,崩溃日志有些是十六进制
NSString *dictString = [dict JSONFragment];//组合成的 dictString==={"content":"Sadgfdfg","phoneno":"","email":"1049055935@qq.com"}=== // 十六进制转换为普通字符串的。 + (NSString *)stringFromHexString:(NSString *)hexString { // char *myBuffer = (char *)malloc((int)[hexString length] / 2 + 1); bzero(myBuffer, [hexString length] / 2 + 1); for (int i = 0; i < [hexString length] - 1; i += 2) { unsigned int anInt; NSString * hexCharStr = [hexString substringWithRange:NSMakeRange(i, 2)]; NSScanner * scanner = [[[NSScanner alloc] initWithString:hexCharStr] autorelease]; [scanner scanHexInt:&anInt]; myBuffer[i / 2] = (char)anInt; } NSString *unicodeString = [NSString stringWithCString:myBuffer encoding:4]; NSLog(@"------字符串=======%@",unicodeString); return unicodeString; } //普通字符串转换为十六进制的。 + (NSString *)hexStringFromString:(NSString *)string{ NSData *myD = [string dataUsingEncoding:NSUTF8StringEncoding]; Byte *bytes = (Byte *)[myD bytes]; //下面是Byte 转换为16进制。 NSString *hexStr=@""; for(int i=0;i<[myD length];i++) { NSString *newHexStr = [NSString stringWithFormat:@"%x",bytes[i]&0xff];///16进制数 if([newHexStr length]==1) hexStr = [NSString stringWithFormat:@"%@0%@",hexStr,newHexStr]; else hexStr = [NSString stringWithFormat:@"%@%@",hexStr,newHexStr]; } return hexStr; }
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