Question

I got same warning here “local declaration hides instance variable” warning

but I got more problems…

Here is my code

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {

 NSURLRequest *theRequest=[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.someaddress.php"]
             cachePolicy:NSURLRequestUseProtocolCachePolicy
            timeoutInterval:60.0];

 // create the connection with the request
 // and start loading the data
 NSURLConnection *theConnection=[[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
 NSLog(@"\n\nCONNECTION:   %@", theConnection);
 NSData *returnData = [NSURLConnection sendSynchronousRequest:theRequest returningResponse:nil error:nil]; 
 NSString *listFile = [[NSString alloc] initWithData:returnData encoding:NSASCIIStringEncoding];   

 NSMutableArray *plist = [[NSMutableArray alloc] init];
 plist = [listFile propertyList];

 NSLog( @"\n 1111 plist is \n%@", plist );
   //I can get a plist format data here,But nothing in 2222
 NSLog(@"Now you see me tableView Row Count");
 NSLog(@"TOTAL PLIST ROW COUNT IS    = %i", [plist count]);


 // Return the number of rows in the section.
    return [plist count];
}

and I got Warning here”Local declaration of ‘plist’ hides instance variable“

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

 static NSString *CellIdentifier = @"LightCell";

 LightCell0 *cell =(LightCell0 *) [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
 if (cell == nil) {
  cell = [[[LightCell0 alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease];
 }
 // Set up the cell…
 NSLog(@"Now you see me Load Data %i", indexPath.row);

 [cell setSelectionStyle:UITableViewCellSelectionStyleNone];

    //I try to get list data here But RETURN NULL
 NSLog( @"\n 2222 plist is \n %@", plist);

 switch (indexPath.row) {
   case 0:
   if ([plist valueForKey:@"nodeStatus"] == 0){
    cell.lightImageView.image = [UIImage imageNamed:@"lightOff.png"]; 
    NSLog(@"value for key Node Status : %@" ,[self.plists Valuefokey:@"nodeStatus"]);
                            //also return NULL !!
   }

   else if([self valueForKey:@"nodeStatus"] == 1){
    cell.lightImageView.image = [UIImage imageNamed:@"lightOn.png"];
   }
   break;


  case 1:
   cell.lightLocation.text =[plist valueForKey:@"nodeName"] ;
   if ([plist valueForKey:@"nodeStatus"] == 0){
    cell.lightImageView.image = [UIImage imageNamed:@"lightOff.png"];
   }
   else if([plist valueForKey:@"nodeStatus"] == 1){
    cell.lightImageView.image = [UIImage imageNamed:@"lightOn.png"];
   };

   break;
  default:
   break;
 }
 return cell;
}

This is the tow items I create in a plist

{
        category = Light;
        nodeID = 1;
        nodeName = "Living Room";
        nodeStatus = 0;
        nodeTrigger = 0;
        nodeType = "light_sw";
    },
        {
        category = Light;
        nodeID = 2;
        nodeName = Kitchen;
        nodeStatus = 0;
        nodeTrigger = 0;
        nodeType = "light_sw";
    }

So that’s my question ,Why can’t I pass “plist” from

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
      ...
}

to

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
        ...
}

and I use NSMutableArray *plist = [[NSMutableArray alloc] init];

But still appear “Local declaration of ‘plist’ hides instance variable”

???

hope someone can figure out this problem

Best Regards !

Answer 1

plist = [listFile propertyList];=====>self.plist = [listFile propertyList];
THAT IS CORRECT