如何将NSData /除图像/ URL之外的任何信息传递到iOS8中的Action Extensions

Question

Consider I have a class called Employee

@interface Employee : NSObject

@property(nonatomic,strong) NSString *empImageURL;
@property(nonatomic,strong) NSString *empName;
@property(nonatomic,strong) NSString *empDOB;
@property(nonatomic,strong) NSString *empJobTitle;

@end

I am able to pass the image/URL/Strings to UIActivityViewController class by specifying the type in plist with maxcount .

How to pass the Instance of Employee object to Custom Action Extension?

Answer 1

Use NSCoding to encode the employee as NSData and send that. You'll have to implement initWithCoder and encodeWithCoder

-(id)initWithCoder:(NSCoder*)coder {
    if((self = [super init])) {
        _empImageURL = [coder decodeObjectForKey:@"empImageURL"];
        ...
    }
    return self;
}

-(void)encodeWithCoder:(NSCoder*)coder {
    [coder encodeObject:_empImageURL forKey:@"empImageURL"];
    ...
}

To encode as data:

data = [NSKeyedArchiver archivedDataWithRootObject:employee];

To decode data:

employee = [NSKeyedUnarchiver unarchiveObjectWithData:data];

For more details on using NSCoding, you can see this tutorial .

Or the Apple Archiving guides