Question

Error content:
Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[Dmain.LDevice encodeWithCoder:]: unrecognized selector sent to instance 0x7f811c717ca0'
*** First throw call stack:

实际数据采用此格式，并保存为NSMutableArray。

<Dmain.LDevice: 0x7fa9f5761fc0>,

我尝试将其保存为NSUserDefault，我正在寻找另一种方式，因为发生了App Crash。

在搜索过程中，我们使用NSCoding进行编码，并找到了一种使用解码的方法。

但是，与上述错误相同的错误将继续发生。

以下是我写的来源。

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *stringRootPath = [documentsDirectory stringByAppendingFormat:@"/metaDeviceList"];

ArchiveData *archiveData = [ArchiveData new];

archiveData.metaDeviceList = [_metaDeviceList mutableCopy];

NSMutableData *mutableData = [NSMutableData new];
NSKeyedArchiver *archiver = [[NSKeyedArchiver alloc] initForWritingWithMutableData:mutableData];

[archiver encodeObject:archiveData forKey:@"metaDeviceList"];   // App crush
[archiver finishEncoding];

//  [NSKeyedArchiver archiveRootObject:archiveData toFile:stringRootPath];  // App crush

[mutableData writeToFile:stringRootPath atomically:YES];

ArchiveData的源内容。

(ArchiveData.h)


#import <Foundation/Foundation.h>

@interface ArchiveData : NSObject <NSObject,NSCoding>
{
    NSObject *_metaDeviceList;
}

@property (nonatomic, retain) NSObject *metaDeviceList;

@end



(ArchiveData.m)

#import "ArchiveData.h"

@implementation ArchiveData

- (void)dealloc{
    [self setMetaDeviceList:nil];
}

- (void)encodeWithCoder:(nonnull NSCoder *)aCoder {

    [aCoder encodeObject:self.metaDeviceList forKey:@"metaDeviceList"];
}

- (id)initWithCoder:(nonnull NSCoder *)aDecoder {

    self = [super init];

    if (self != nil) {

        self.metaDeviceList = [aDecoder decodeObjectForKey:@"metaDeviceList"];
    }

    return self;
}

@end

有什么问题？请让我知道如何解决它！请...

objective-c：应用程序在archiveRootObject中崩溃

0 个答案: