Developer guide for foxit pdf sdk for mac objectivec. This answer is wrong when str contains code points larger than 127. Please give me good code example for this conversion. A modern operating system uses the concept of a single root to the filesystem, but mswindows has multiple filesystems with no common root, so code must be aware of this. Create a base64, utf8 encoded nsdata from the receivers contents using the given options. Returns nil if the initialization fails for some reason for example if data does not represent valid data for encoding. Jun 29, 2011 if i understand your question correctly, then the following will work.
Replaces the bytes of data in the specified range with a copy of the new bytes supplied. Dec 03, 2010 converting a nsstring into nsdate converting a nsstring into nsdate hello. Fromstring, but those functions do entirely different things. Nsstring declares the programmatic interface for objects that create and manage immutable character strings in a representationindependent format. This is a test will return this is a test and this is a test will return this is a test datefromtimestamp. The idea is to interpret the bytes as an array of uint16 integers and use the builtin byteswapped property. String if filetype pdf convert to jpg before saving. Text strings are replaced in order from small object number. If the location of the range specified lies beyond the end of the data self length nsdata output in swift the littleendian way. Nsstring and nsmutablestring are abstract classes for string manipulation. It should be replaced with either nsboxprimary or nsboxcustom. The bytes method returns a pointer to the bytes contained in the data object. It can also be encoded and decoded to and from ascii, utf8, utf16, utf32, or any other string encoding represented by nsstring encoding. Nsstring the nsstring class and its mutable subclass, nsmutablestring, provide an extensive set of apis for working with strings, including methods for.
Convert the given nsstring to nsdata converttonsdata. Its a common question among ios developers, how do i convert an nsstring object to an nsdata object the conversions is as simple as shown below. Searching and element addition and removal in the case of nsmutabledictionary is fasterthanlinear. You can rate examples to help us improve the quality of examples. Converting nsdata to nsstring in objective c stack overflow. Hex string to bytes nsdata ask question asked 3 years, 9 months ago. To check for other access permissions simply substitute the corresponding. The mobile sdk converts nsdata instances to nsstring before sending the post request. The gnustep corebase library is a library of generalpurpose, nongraphical c objects. In this post ill do the opposite, putting the conversion into the context how to print an nsdata object to the debugging console by default, when you print an nsdata object to the console using nslog, the output will be in hex, it will look something like the following.
The value of shouldfree specifies whether the receiver should attempt to free the memory pointer to by abuffer when the receiver is deallocated. I began programming in 1966 with fortranii and in 1969 with bal360 and 1401autocode in 1970, et al. For any number of reasons, including the key is stored as part of the application, this approach is by no means a substitution for real. In ios, nsstring is one of the most commonly used classes in foundation framework. For custom classes, you must add the encodewithcoder. Nsstring provides methods for readonly access, while nsmutablestring allows for changing the contents of the string. To create a pdf with it, you simply create a nsdata object by passing datawithpdfinsiderect the bounds of the view that you want to save. If monomac allows you to use a record type of generic password, the password will be stored in the generic property rather than valuedata. Nsstring provides builtin support for unicode, which means that we can include utf8 characters directly in string literals. Sometimes its easy to create the i file from scratch, so heres how to do it.
Creating nsstring from nsdata by fixing invalid utf8. Hi, i noticed a case when utf8 string is broken by 2 bytes utf8 character being 1 byte long, for example only b1100 character appears and then a valid ascii character appears after it, using your code with small modifications i was able to solve this issue, and parse the json successfully. Below example explains how to convert nsdata to nsstring with objectivec using nsstring initwithdata function we can convert nsdata to nsstring. We can usensstring datausingencoding function to convert nsstring to nsdata. Contribute to microsoftwinobjc development by creating an account on github. Remember, the valuedata property is nsdata, not a string. This function returns nil if the encoding is not correct. Invoking liferay services in your ios app liferay help.
The value of buffersize is the number of bytes to use. Nsdata s two primitive methodsbytes and lengthprovide the basis for all the other methods in its interface. If you arent sure whether a class supports nscoding, check its class documentation. Returns a new version of the current image, replacing the current configuration attributes with the specified attributes. Ill also throw in an optimal nsdata tohexstring method for good measure, hopefully to help counteract the awful practice some developers have adopted of using the nsdata description for that serialization. Extends string class import foundation extension string func base64encoded string let plaindata datausingencodingnsutf8stringencoding let base64string plaindatabase64encodedstringwithoptionsomraw0. All lengths, character indexes, and ranges are expressed in terms of 16bit platformendian values, with index values starting at 0 an nsstring object can be initialized from or written to a c buffer, an nsdata object, or the contents of an nsurl. Create a base64 encoded nsstring from the receivers contents using the given options. I am using this code but the final string returns null nsstring str nsstring alloc initwithdata. Portable path handling across both unixlike and mswindows operating systems requires some care. Ckoemail objectivec reference documentation chilkat. We can use nsstring datausingencoding function to convert nsstring to nsdata.
I ended up using the first example that i found here is. How can i create a nsdate object out of it and then get different components like day, month, date, year from it. Mar 12, 20 convert nsdata to nsstring in the previous post i wrote a few lines of code to convert an nsstring object to an nsdata object. If replacement patterns are set, the email bodies and header fields are modified by. Nsstring the nsstring class and its mutable subclass, nsmutablestring, provide an extensive set of apis for working with strings, including methods for comparing, searching, and modifying strings. Nsdata and nsstring saving data in ios raywenderlich. The resulting obfuscated string may include nonprintable characters, so if you print to the console as shown above, dont be surprised if the output contains what looks to be spaces or newline characters. Create file for nsdata write tests and nsfilehandle. Encode uiimage nsdata nsstring base64encodedstring decode nsstring base64encodedstring nsdata uiimage but i get an issue when decoding a base64encodedstring to an nsdata by using the following code the following code some times converts in to a wrong nsdata, so which leads to a big issue in my project. So for fun and education i created a swift string extension and for. The first way to create a pdf uses nsviews datawithpdfinsiderect method and is the manner in which pdf generation is commonly shown. Nsstringnsarary nsarray array str componentsseparatedbystring. In objectivec, the nsstring class implements the same scalar conversion methods listed in.
Nsdata devicetokendata nsdata alloc initwithbase64encoding. The cocoapods website has an optional integration with appsight. Nsstring devicetokenbase64 devicetoken base64encoding. The mobile sdk does this for you, so you dont have worry about it. Below example explains how to convert nsdata to nsstring with objectivec. Hi, i am using the code below to call data using php from my web site, her is my nsobject code. An nsstring object initialized by converting the bytes in data into utf16 code units using encoding. The value of abuffer is a pointer to something to be stored. Ill also throw in an optimal nsdata to hexstring method for good measure, hopefully to help counteract the awful practice some developers have adopted of using the nsdata description for that serialization. Nsutf8stringencoding becomes a json array such as 104,101,108,108,111.
So lets utilize our awesome method swizzling to be able to configure the description of nsdata. Convert self to a nsdata sentencecapitalizedstring. Nsdata and its mutable subclass nsmutabledata provide data objects, objectoriented wrappers for byte buffers. Nsmutabledata extends nsdata with methods to adjust the size of the array, and the ability to append, replace, and remove bytes. How to convert nsdata to nsstring or vice versa in objective.
The method takes as an argument an nsstring object containing the path to file. Returns the data for the specified image in png format. Consider using nsscanner, and specifically the methods setcharacterstobeskipped. An nsstring object encodes a unicodecompliant text string, represented as a sequence of utf16 code units. This is a mapping to the objectivec nsstring class. The nsdata class declares the programmatic interface to an object that contains data in the form of bytes. You can serialize the object to a byte array, then use that to create the nsdata object and get the byte array back out when you need it again you could also serialize the object to a string with for example, then create the nsdata from the string. This should work to swap each pair of adjacent bytes in the data. Returns the binary bytes of the nth mime subpart having a specified content type such as applicationpdf. How to convert nsdata to nsstring or vice versa in. Example implementation in progress output implementation in progress base64encodedstringwithoptions. Do i need to includeimport something for these functions to work.
Nsstring is immutable, and thus can only be initialized but not modified. Nsdata uiimagejpegrepresentation uiimage image, cgfloat compressionquality. Hey i need to get the device token id when my ios application start. Send nsstring as body of post method using nsurlsession. In files where you want to use base64 encodingdecoding, simply include the header file and use one of the provided nsdata or nsstring additions. This function returns nil if the encoding is not correct syntax of initwithdata idinitwithdata. How to convert nsdata to nsstring or vice versa in objective c and swift.
Data objects let simple allocated buffers that is, data with no embedded pointers take on the behavior of foundation objects. I have some string data in an nsdata named data that i have loaded from an html file, and i want to create an nsstring with it, for easy parsing later. I havent found any place where this is documented, weirdly enough. To convert a string into an nsnumber object, create one from the converted value. In this post ill do the opposite, putting the conversion into the context how to print an nsdata object to the debugging console. The returned object may be different from the original receiver.
Heres an example of saving a dictionary object to a file. As i create the nsdata object during runtime, i passed the data to the. An nsstring object can be initialized from or written to a c buffer, an nsdata object, or the contents of an nsurl. Mar 10, 20 code to convert an nsstring to an nsdata object. How to convert a hexadecimal nsstring to nsdata quora. The foundation kit, or just foundation for short, is an objectivec framework in the openstep.
Technically this means subclasses of nsstring, since it is a class. Unable to strip excess newline characters from a string or. The most basic way in which nsstring object is represented is shown below. Matts answer should take care of it, but if it absolutely doesnt and youre somehow absolutely sure that your nsdata object has valid string data in it then you can access the data directly via the data bytes method, build a traditional c stri. I want to convert nsdata to nsstring what is the best way to do this. In the previous post i wrote a few lines of code to convert an nsstring object to an nsdata object. When swift originally launched, nsstring older ios strings and native swift strings were completely interchangeable, as were nsarray and swift arrays, plus nsdictionary and swift dictionaries. Hi readers,this blog includes the concept of converting nsdata to uiimage with the help of a very simple example. This class is a subclass of the native nsfilehandle class.
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