unarchiver

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IOS-archive and Archiver, UnArchiver, and ios-unarchiver

IOS-archive and Archiver, UnArchiver, and ios-unarchiver 1. Existing archive and archive First, let's look at a simple example: // Method 1: Archive object // object --> file NSArray * array = [NSArray arrayWithObjects: @ "zhang", @ "wangwu", @ "lisi", nil]; // NSHomeDirectory get the root directory stringByAppendingPathComponent Add the stored file name NSString * filePath = [NSHomeDirectory () stringByApp

Simple data storage--plist, Nskeyedarchiver Archive, Nsuserdefaults (preferences), SQLite (embedded database)

is saved in the data object Nskeyedarchiver *archiver = [[Nskeyedarchiver alloc]initforwritingwithmutabledata:data]; Archive the object and set key to read [Archiver encodeint:myint forkey:@ "int"]; [Archiver encodeobject:mystring forkey:@ "string"]; [Archiver encodeobject:mynumber forkey:@ "number"]; [Archiver encodeobject:myarray forkey:@ "Array"]; [Archiver encodeobject:mydic forkey:@ "dictionary"]; End Archive [Archiver finishencoding]; Write file [Data writetofile:filename2 Atomically:y

Archive and Nskeyedunarchiver with Nskeyedarichiver

Atomically:yes]; Access: Gets the data from the path construct Nskeyedunarchiver instance, using the Decodexxxforkey method to get the object in the file. Nsmutabledata *datar = [[Nsmutabledata Alloc]initwithcontentsoffile:multihomepath]; Nskeyedunarchiver *unarchiver = [[Nskeyedunarchiver alloc]initforreadingwithdata:dater]; Cgpoint pointr = [unarchiver decodecgpointforkey:@"Kpoint"];

iOS Learning notes-data persistence

you can use the Decodeobject:forkey method to decode the instance variable3.2 How to use1> Custom entity Classes @interface cycontact:nsobject /** name * /@property (nonatomic,copy) nsstring *name; /** Telephone * /@property (nonatomic,copy) nsstring *phone; @end2> implementation of Nscoding protocol method #pragma mark-nscoding protocol method/* Encodes the receiverusing a given archiver via a given AR The chiver encodes the message receiver. The class terminal Encodewithcoder

UI Basics: Datapersistent. Sandbox

(@ "%@", issuccess @ "person writes successfully": @ "person writes failed");Two. Anti-archivingThe reading of a complex object is called an anti-archiveNskeyedunarchiver Anti-archiving tool1. Get the data in the file, a. File path B. Find a data object to receive read resultsNSData *undata = [NSData Datawithcontentsoffile:personpath];2. Creating an anti-archiving toolNskeyedunarchiver *unarchiver = [[Nskeyedunarchiver alloc]initforreadingwithdata:un

IOS data persistence (1): ios data

compression tool [achiver finishEncoding]; NSString * homePath = NSHomeDirecto Ry (); NSString * toPath = [homePath stringByAppendingPathComponent: @ "person.txt"]; BOOL isSuccess = [data writeToFile: toPath atomically: YES]; NSLog (@ "% @", isSuccess? @ "Successful": @ "failed"); // read complex objects, reverse archiving // NSKeyedUnarchiver NSData * getData = [NSData dataWithContentsOfFile: toPath]; optional * unArchiver = [[NSKeyedUnarchiver allo

How to solve the Mac inside the file name garbled problem after decompression

If you think of your Mac as your main work machine, and your coworkers use Windows, sometimes exchanging documents can be a pain, like the one you're talking about today: when a colleague passes you a zip file, and you extract it, you find some file names in Chinese, What you see is going to be a bunch of garbled characters ... Jay has been ignoring this problem until one day finally, to Google A, finally found the answer, here to share.In fact, the solution is very simple, the next software ins

Archiving of IOS objects

data];// ArchiveNskeyedarchiver *archiver = [[Nskeyedarchiver alloc] initforwritingwithmutabledata:data];int aInt = 100; nsstring *astring = @ "I am an Apple";Nsdictionary *adict = @{@ "a": @ "B", @ "C": @ "D"};[Archiver encodeobject:@ (aInt) forkey:@ "AInt"];[Archiver encodeobject: astring forkey:@ "astring"];[Archiver encodeobject: adict forkey:@ "Adict"];[Archiver finishencoding];NSString *datahomepath = [Nshomedirectory () stringbyappendingpathcomponent:@ "Data.archiver"];[Data writetofile:

iOS development-Data archiving and recovery Nskeyedarchiver

Archiving and recovery archivingArchive, English archiver[' ɑrk?v?], this refers to storing OC objects as a file or a block of data on the network.Recovery archive, English unarchiver, refers to restoring an archived block of data from a file or network to an OC object in memory.Archiving and recovery is primarily used to store custom type objects, save custom data before a program is paused or closed, and read stored custom data after the program res

Archive files (file write and read)

:@"num"]; [Archiver encodeobject:@"LJF"forkey:@"Name"];//Complete the encoding to populate the above archived data into data, where the archived objects are already stored[Archiver finishencoding];NSString*filepath = [Nshomedirectory () stringbyappendingpathcomponent:@"Array. LJF "];BOOLSuccess = [Data Writetofile:filepath atomically:YES];if(success) {NSLog(@"Archive Success"); }}//Solution 2-(void) nskeyedunarchivertwo{NSString*filepath = [Nshomedirectory () stringbyappendingpathcomponent:@"Arr

IOS Data storage

"];[Archvier finishencoding];[Data Writetofile:multihomepath Atomically:yes];Get data from a fileNsmutabledata *datar = [[Nsmutabledata Alloc]manypath];Nskeyedunarchiver *unarchiver = [[Nskeyedunarchiver Alloc]initforreadingwithdata:datar];Cgpoint pointr = [Unarchiver decodecgpointforkey:@ "Kpoint"];NSString *infor = [Unarchiver decodeobjectforkey:@ "Kinfo"];Nsin

Data Persistence UI pro in iOS _ 17

: NSData * contentData = [NSData dataWithContentsOfFile: personPath]; // 1. create an archive tool NSKeyedUnarchiver * unArchiver = [[NSKeyedUnarchiver alloc] initForReadingWithData: contentData]; // 2. read the file (archive method is required) Person * p2 = [unArchiver decodeObjectForKey: @ boyFriend]; NSLog (@%@, p2); // 3. stop [unArchiver finishDecoding]; //

14. ios Data Access

called) [archiver finishEncoding]; // write the archived data to the file [data writeToFile: path atomically: YES]; NSData - Restore from the same file 2 Items Person Object Restore (Decoding) // read data from the file NSData * data = [NSData dataWithContentsOfFile: path]; // based on data, resolved to an authorization object NSKeyedUnarchiver * unarchiver = [[NSKeyedUnarchiver alloc] initForReadingWithData: data]; Person * person1 = [

Analysis of archive and archive of OC objects and Analysis of oc archive files

-------------------- * // load the file data into the NSData object NSData * data2 = [NSData dataWithContentsOfFile: filepath]; // use the NSData object to initialize the NSKeyedUnarchiver * unarchiver = [[NSKeyedUnarchiver alloc] initForReadingWithData: data2]; // NSArray * arr2 = [unarchiver decodeObjectForKey: @ "arr"]; NSInteger integer2 = [unarchiver decode

Data Persistence and compilation of static link libraries and App static links in the app development process

(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{ NSMutableData *data = [NSMutableData data]; NSKeyedArchiver *archiver = [[NSKeyedArchiver alloc] initForWritingWithMutableData:data]; NSArray *keyArray = [NSArray arrayWithArray:[dic allKeys]]; [archiver encodeObject:keyArray forKey:filename]; for (NSString *key in keyArray) { NSObject *object = [dic objectForKey:key]; [archiver encodeObject:object forKey:key]; }

Data Persistence storage mechanism in ios development

operated.This section is not described in the book. It is estimated that the primary part is skipped.Tmp: The application temporarily stores files. When this is not required, the application deletes the file data under it.This file also provides the directory retrieval method: JavaCode 14 .} 16. # pragma NSCopying protocol implementation 17.-(id) copyWithZone :( NSZone *) zone 18 .{ 23 .} 24. @ end Then, read and write the object archive.[Cpp] view plaincopy// Read the archive fileNSData * data

Some reflections on the previous project III

Withkey: (NSString *) key{Nsmutabledata*data =[[Nsmutabledata alloc] init]; //Create an archive helper classNskeyedarchiver *archiver =[[Nskeyedarchiver alloc] initforwritingwithmutabledata:data]; //Coding[Archiver Encodeobject:model Forkey:key]; //End Encoding[Archiver finishencoding]; //Write if([Data writetofile:[self GetFilePath] atomically:yes]) {NSLog (@"Cache Set Success"); }Else{NSLog (@"Cache Set Fail"); } }//Unarchiver-(ID) Uncode

Archive anti-archiving

Datawithcontentsoffile:personpath];Create an anti-archiving toolNskeyedunarchiver *unarchiver=[[nskeyedunarchiver Alloc]initforreadingwithdata:undata];For anti-archivingPerson *p1=[unarchiver Decodeobjectforkey:kperson1];Person *p2=[unarchiver Decodeobjectforkey:kperson2];End Anti-archive[Unarchiver finishdecoding];NS

Detailed IOS data storage _ios

forkey:@ "Person1"]; [Archiver encodeobject:person2 forkey:@ "Person2"]; Archive complete (make sure to call this method) [Archiver finishencoding]; Writes archived data to the file [data Writetofile:path Atomically:yes]; Recovery (decoding): Reading data from a file nsdata *data = [NSData Datawithcontentsoffile:path]; According to the data, parse into a Nskeyedunarchiver object nskeyedunarchiver *unarchiver = [[Nskeyedunarchiver alloc]

4 ways to persist iOS data

:@ "student.archiver"]; nsdata* data = [NSData datawithcontentsoffile:filename]; if ([data length] > 0) { nskeyedunarchiver* unarchiver = [[Nskeyedunarchiver alloc]initforreadingwithdata:data]; student* Student = [Unarchiver decodeobjectforkey:@ "Mystudent"]; Studentno.text = Student.studentno; Studentname.text = Student.studentname; Studentclass.text = Student.stude

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