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Objective-C: How to convert json value to BOOL?


Objective-C: How to convert json value to BOOL?

By : user2956318
Date : November 22 2020, 10:54 AM
I think the issue was by ths following , I have a property on my Model as , Try changing your model to declare a bool rather than a bool pointer:
code :
@property (nonatomic) bool groupOnly;


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convert NSNumber to BOOL objective C

convert NSNumber to BOOL objective C


By : Leo Malmqvist
Date : March 29 2020, 07:55 AM
it should still fix some issue First of all, the initialization of your NSNumber is incorrect. You should use one of the +numberWith: class methods defined on NSNumber:
code :
+ (NSNumber *)numberWithChar:(char)value;
+ (NSNumber *)numberWithUnsignedChar:(unsigned char)value;
+ (NSNumber *)numberWithShort:(short)value;
+ (NSNumber *)numberWithUnsignedShort:(unsigned short)value;
+ (NSNumber *)numberWithInt:(int)value;
+ (NSNumber *)numberWithUnsignedInt:(unsigned int)value;
+ (NSNumber *)numberWithLong:(long)value;
+ (NSNumber *)numberWithUnsignedLong:(unsigned long)value;
+ (NSNumber *)numberWithLongLong:(long long)value;
+ (NSNumber *)numberWithUnsignedLongLong:(unsigned long long)value;
+ (NSNumber *)numberWithFloat:(float)value;
+ (NSNumber *)numberWithDouble:(double)value;
+ (NSNumber *)numberWithBool:(BOOL)value;
+ (NSNumber *)numberWithInteger:(NSInteger)value NS_AVAILABLE(10_5, 2_0);
+ (NSNumber *)numberWithUnsignedInteger:(NSUInteger)value NS_AVAILABLE(10_5, 2_0);
NSLog(@"bool is: %@", (myBool) ? @"YES" : @"NO");
Convert an int to bool with Json.Net

Convert an int to bool with Json.Net


By : tejas sangani
Date : March 29 2020, 07:55 AM
like below fixes the issue I am calling a webservice and the returned data for a bool field is either 0 or 1 however with my model I am using a System.Bool , Ended up creating a converter
code :
 public class BoolConverter : JsonConverter
{
    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
    {
        writer.WriteValue(((bool)value) ? 1 : 0);
    }

    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
    {
        return reader.Value.ToString() == "1";
    }

    public override bool CanConvert(Type objectType)
    {
        return objectType == typeof(bool);
    }
}
 [JsonConverter(typeof(BoolConverter))]
    public bool active { get; set; }
Is there a method can convert a BOOL into NSString in objective-C?

Is there a method can convert a BOOL into NSString in objective-C?


By : user6074446
Date : March 29 2020, 07:55 AM
I hope this helps . You can use the conditional operator to return string from the boolean.
code :
BOOL a = YES;
NSLog(@"a is %@", a ? @"YES" : @"NO");
Why does the compiler convert bool to integer and back to bool instead of returning the bool itself?

Why does the compiler convert bool to integer and back to bool instead of returning the bool itself?


By : Karolina
Date : March 29 2020, 07:55 AM
hope this fix your issue It is decompiled code, it is likely just a glitch of the decompiler.
code :
public enum ConnectionState
{
    Closed = 0,
    Open = 1,
    Opening = 2,
    OtherStuff = 3,
    AndSoOn = 4,
}

public bool IsOpen
{
    get
    {
        ConnectionState state;
        if (this.data != null)
        {
            state = ConnectionState.Open;
        }
        else
        {
            state = ConnectionState.Closed;
        }

        return state != ConnectionState.Closed;
    }
}
How to convert Objective-C BOOL to Swift's Bool with NSError** as one of the parameter in return

How to convert Objective-C BOOL to Swift's Bool with NSError** as one of the parameter in return


By : Alok Bishoyi
Date : March 29 2020, 07:55 AM
will be helpful for those in need Objective-C methods that return BOOL and return an NSError by reference are exposed to Swift as methods that use the try/catch error-handling mechanism, and return Void. If you look at the generated interface, you'll probably see that it looks something like this:
code :
func canLogin(withUsername: String, password: String) throws // notice no return type
do {
    try loginLogicHandler.canLogin(with: bla, and: bla)

    // if canLogin returned YES, you get here
} catch {
    // if canLogin returned NO, you get here
}
if (try? loginLogicHandler.canLogin(with: bla, and: bla)) != nil {
    // the method returned YES
}
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