Searching array kept in NSDictionary - objective-c

Question

I am having a requirement in which I have 5 keys stored in a NSDictionary corresponding to which I have stored 5 values from different arrays. My data structure looks like:
Dictionary is {
1 = (
{
SubRegionName = "abc";
WalkId = 123;
WalkName = xyz;
},
{
},....
2 = (
{
SubRegionName = "abc";
WalkId = 123;
WalkName = xyz;
},
{
},....
3 = (
{
SubRegionName = "abc;
WalkId = 123;
WalkName = xyz;
},
{
},....
4 = (
{
SubRegionName = "abc";
WalkId = 123;
WalkName = xyz;
},
{
},....
5 = (
{
SubRegionName = "abc";
WalkId = 123;
WalkName = xyz;
},
{
},
)
The above data I am getting from sqlite according to some Id say tempId(1,2,3,4,5) and I want to use them separately. As I have to display the walkName as cell.textlabel.text and SubregionName as cell.detailtext.text in tableview.
I am not getting how to access this data from the dictionary. Can anyone please suggest me right way to do it.
My code is:
// For Database queries (To get data from database) ***********
-(void)getMainRegions
{
sqlite3 *walkNameDB;
if (sqlite3_open([[self databasePath] UTF8String], &walkNameDB) != SQLITE_OK) {
sqlite3_close(walkNameDB);
NSAssert(0, #"Failed to open Walk name database");
}
NSString *regionQuery = #"SELECT Rid,RName from MainRegions";
sqlite3_stmt *teststatement = nil;
// NSLog(#"%d",sqlite3_prepare_v2(walkNameDB,[regionQuery UTF8String], -1, &teststatement, nil));
if (sqlite3_prepare_v2(walkNameDB,[regionQuery UTF8String], -1, &teststatement, nil) == SQLITE_OK)
{
RNameArray = [[NSMutableArray alloc] init];
RIdArray = [[NSMutableArray alloc] init];
while( sqlite3_step(teststatement) == SQLITE_ROW )
{
NSNumber *RId;
int temp1 = (int)sqlite3_column_int(teststatement, 0);
RId = [[NSNumber alloc] initWithInt:temp1];
char *RNameCharacter;
RNameCharacter = (char *) sqlite3_column_text(teststatement, 1);
NSString *RNameString = [[NSString alloc] initWithUTF8String:RNameCharacter];
[RNameArray addObject:RNameString];
[RIdArray addObject:RId];
}
}
[self getWalks];
}
-(void)getWalks
{
sqlite3 *walkNameDB;
if (sqlite3_open([[self databasePath] UTF8String], &walkNameDB) != SQLITE_OK) {
sqlite3_close(walkNameDB);
NSAssert(0, #"Failed to open Walk name database");
}
RegionWalksDictionary = [[NSMutableDictionary alloc] init];
for(regionId in RIdArray)
{
regionWalkArray = [[NSMutableArray alloc] init];
NSString *walkQuery = [[NSString alloc] initWithFormat:#"SELECT Wid,WName,SName from Walks,SubRegions WHERE Walks.Sid=SubRegions.Sid AND Rid = %d",[regionId integerValue] ];
sqlite3_stmt *walkstatement = nil;
// NSLog(#"%d",sqlite3_prepare_v2(walkNameDB,[walkQuery UTF8String], -1, &walkstatement, nil));
if (sqlite3_prepare_v2(walkNameDB,[walkQuery UTF8String], -1, &walkstatement, nil) == SQLITE_OK)
{
while( sqlite3_step(walkstatement) == SQLITE_ROW )
{
NSNumber *WId;
int temp1 = (int)sqlite3_column_int(walkstatement, 0);
WId = [[NSNumber alloc] initWithInt:temp1];
char *WNameCharacter;
WNameCharacter = (char *) sqlite3_column_text(walkstatement, 1);
NSString *WNameString = [[NSString alloc] initWithUTF8String:WNameCharacter];
char *SNameCharacter;
SNameCharacter = (char *) sqlite3_column_text(walkstatement, 2);
NSString *SNameString = [[NSString alloc] initWithUTF8String:SNameCharacter];
NSMutableDictionary *tempWalk = [[NSMutableDictionary alloc] init];
[tempWalk setObject:WId forKey:#"WalkId"];
[tempWalk setObject:WNameString forKey:#"WalkName"];
[tempWalk setObject:SNameString forKey:#"SubRegionName"];
[regionWalkArray addObject:tempWalk];
}
}
[RegionWalksDictionary setObject:regionWalkArray forKey:regionId];
// NSLog(#"arr%#",RegionWalksDictionary);
}
}
//*** Methods to get data from database ends here **************

Answer 1

Try this way...
for(id dict in RegionWalksDictionary){
NSLog(#"WalkId: %#",[[[RegionWalksDictionary objectForKey:dict]objectAtIndex:0]objectForKey:#"WalkId"] );
NSLog(#"WalkName: %#",[[[RegionWalksDictionary objectForKey:dict]objectAtIndex:0]objectForKey:#"WalkName"] );
NSLog(#"SubRegionName: %#",[[[RegionWalksDictionary objectForKey:dict]objectAtIndex:0]objectForKey:#"SubRegionName"] );
NSLog(#"----");
}
I have used as following (comment if this is not the structure or your data)
NSMutableDictionary *RegionWalksDictionary=[NSMutableDictionary new];
NSMutableArray *regionWalkArray=[NSMutableArray new];
NSMutableDictionary *tempWalk=[NSMutableDictionary new];
[tempWalk setObject:#"wk1" forKey:#"WalkId"];
[tempWalk setObject:#"wkName1" forKey:#"WalkName"];
[tempWalk setObject:#"srName1" forKey:#"SubRegionName"];
[regionWalkArray addObject:tempWalk];
[RegionWalksDictionary setObject:regionWalkArray forKey:#"1"];
[RegionWalksDictionary setObject:regionWalkArray forKey:#"2"];
[RegionWalksDictionary setObject:regionWalkArray forKey:#"3"];
NSLog(#"tempWalkd dict is %#",RegionWalksDictionary);

Answer 2

try this
NSString * walkName = [[parentDic objectForKey:[NSString stringWithFormat:#"%d",indexPath.row]] objectForKey:#"WalkName"];
NSString * SubregionName = [[parentDic objectForKey:[NSString stringWithFormat:#"%d",indexPath.row]] objectForKey:#"SubRegionName"];

Answer 3

It seems you have an NSDictionary with your 5 keys, and inside that you have an NSArray with a single element that is a NSDictionary. Although I might be wrong, try this:
NSDictionary *dictionaryForKey1 = [[myDictionary objectForKey:#"1"] objectAtIndex:0];
You can then use this:
NSString *walkName = [dictionaryForKey1 objectForKey:#"WalkName"];

Answer 4

AH! now I see it -- there are 5 arrays of length 1
NSArray *array1 = dict[#"1];
NSDictionary *details = array1[0];
//print each var
id WalkName = details[#"WalkName"];