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[__NSArrayM objectAtIndex:]: index 0 beyond bounds for empty array'

LucaAlferi1

i used the identify demo project to create my application. When i click out of extent of the dinamicLayer, application crashed with this error;

2012-04-15 12:42:45.037 iSIT[1427:11f03] *** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[__NSArrayM objectAtIndex:]: index 0 beyond bounds for empty array'

i tried to use alert view when click out of extent, but don't works.

Please Help me

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Accepted answers

NimeshJarecha

Just change your didExecuteWithIdentifyResults code as following and it won't crash...

- (void)identifyTask:(AGSIdentifyTask *)identifyTask operation:(NSOperation *)op didExecuteWithIdentifyResults:(NSArray *)results {          //clear previous results     [self.graphicsLayer removeAllGraphics];          if ([results count] > 0) {                          //add new results         AGSSymbol* symbol = [AGSSimpleFillSymbol simpleFillSymbol];         symbol.color = [UIColor colorWithRed:0 green:0 blue:1 alpha:0.5];                  // for each result, set the symbol and add it to the graphics layer         for (AGSIdentifyResult* result in results) {             result.feature.symbol = symbol;             [self.graphicsLayer addGraphic:result.feature];         }                  //set the callout content for the first result         //get the state name         NSString *stateName = [((AGSIdentifyResult*)[results objectAtIndex:0]).feature.attributes objectForKey:@STATE_NAME];          self.mapView.callout.title = stateName;         self.mapView.callout.detail = @Click for more detail..;                  //show callout         [self.mapView showCalloutAtPoint:self.mappoint forGraphic:((AGSIdentifyResult*)[results objectAtIndex:0]).feature animated:YES];     }     else {                  UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@Identify Result                                                         message:@No Result Found!                                                        delegate:nil                                               cancelButtonTitle:@OK                                               otherButtonTitles:nil];         [alert show];         [alert release];     }          //call dataChanged on the graphics layer to redraw the graphics     [self.graphicsLayer dataChanged];  }

Regards,
Nimesh

All comments

NimeshJarecha

Just change your didExecuteWithIdentifyResults code as following and it won't crash...

- (void)identifyTask:(AGSIdentifyTask *)identifyTask operation:(NSOperation *)op didExecuteWithIdentifyResults:(NSArray *)results {          //clear previous results     [self.graphicsLayer removeAllGraphics];          if ([results count] > 0) {                          //add new results         AGSSymbol* symbol = [AGSSimpleFillSymbol simpleFillSymbol];         symbol.color = [UIColor colorWithRed:0 green:0 blue:1 alpha:0.5];                  // for each result, set the symbol and add it to the graphics layer         for (AGSIdentifyResult* result in results) {             result.feature.symbol = symbol;             [self.graphicsLayer addGraphic:result.feature];         }                  //set the callout content for the first result         //get the state name         NSString *stateName = [((AGSIdentifyResult*)[results objectAtIndex:0]).feature.attributes objectForKey:@STATE_NAME];          self.mapView.callout.title = stateName;         self.mapView.callout.detail = @Click for more detail..;                  //show callout         [self.mapView showCalloutAtPoint:self.mappoint forGraphic:((AGSIdentifyResult*)[results objectAtIndex:0]).feature animated:YES];     }     else {                  UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@Identify Result                                                         message:@No Result Found!                                                        delegate:nil                                               cancelButtonTitle:@OK                                               otherButtonTitles:nil];         [alert show];         [alert release];     }          //call dataChanged on the graphics layer to redraw the graphics     [self.graphicsLayer dataChanged];  }

Regards,
Nimesh

LucaAlferi1

Just change your didExecuteWithIdentifyResults code as following and it won't crash...

- (void)identifyTask:(AGSIdentifyTask *)identifyTask operation:(NSOperation *)op didExecuteWithIdentifyResults:(NSArray *)results {
    
    //clear previous results
    [self.graphicsLayer removeAllGraphics];
    
    if ([results count] > 0) {
                
        //add new results
        AGSSymbol* symbol = [AGSSimpleFillSymbol simpleFillSymbol];
        symbol.color = [UIColor colorWithRed:0 green:0 blue:1 alpha:0.5];
        
        // for each result, set the symbol and add it to the graphics layer
        for (AGSIdentifyResult* result in results) {
            result.feature.symbol = symbol;
            [self.graphicsLayer addGraphic:result.feature];
        }
        
        //set the callout content for the first result
        //get the state name
        NSString *stateName = [((AGSIdentifyResult*)[results objectAtIndex:0]).feature.attributes objectForKey:@STATE_NAME]; 
        self.mapView.callout.title = stateName;
        self.mapView.callout.detail = @Click for more detail..;
        
        //show callout
        [self.mapView showCalloutAtPoint:self.mappoint forGraphic:((AGSIdentifyResult*)[results objectAtIndex:0]).feature animated:YES];
    }
    else {
        
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@Identify Result
                                                        message:@No Result Found!
                                                       delegate:nil
                                              cancelButtonTitle:@OK
                                              otherButtonTitles:nil];
        [alert show];
        [alert release];
    }
    
    //call dataChanged on the graphics layer to redraw the graphics
    [self.graphicsLayer dataChanged]; 
}

Regards,
Nimesh

I love you
Thanks

NimeshJarecha

You're welcome!

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Thank you,
Nimesh

AlexanderLitvak

Hello, I'm getting same error message but I'm running Task for Offline Routing.
It is fail on initializing AGSRouteTask in this section, in the last row:
SError* error = nil;
NSString* docDir = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString* fullPath = [docDir stringByAppendingPathComponent:@NetworkData.bundle/RuntimeSanFrancisco.geodatabase];
_routeTask = [AGSRouteTask routeTaskWithDatabasePath:fullPath network:@Streets_ND error:&error];

All required files are copied in to Document folder and before I'm initializing task I validate existence of *.geodatabase and Streets_ND.
Installed SDK Runtime version 10.2.3.

Thanks,
Alex

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