Changing NSString from previous UITableviewCell? - ios

Question

In my app I populate a NSMutableArray from a .sqlite database. Inside this array where I grab all the goodies from the database, I run a query to look inside the database. However, I want to be able to change this query dependent on what user selects in UITableview controller prior to this view controller. You'll see the query inside the function:
NSString *character = #"SELECT * FROM strengthexercises WHERE primarymuscle LIKE '%bicep%'";
const char *sql = [character cStringUsingEncoding:NSASCIIStringEncoding];
That lies within the array method:
-(NSMutableArray *) authorList{
_theauthors = [[NSMutableArray alloc] initWithCapacity:10];
#try {
NSFileManager *fileMgr = [NSFileManager defaultManager];
NSString *dbPath = [[[NSBundle mainBundle] resourcePath ]stringByAppendingPathComponent:#"StayhealthyExercises.sqlite"];
BOOL success = [fileMgr fileExistsAtPath:dbPath];
if(!success)
{
NSLog(#"Cannot locate database file '%#'.", dbPath);
}
if(!(sqlite3_open([dbPath UTF8String], &db) == SQLITE_OK))
{
NSLog(#"An error has occured: %s", sqlite3_errmsg(db));
}
NSString *character = #"SELECT * FROM strengthexercises WHERE primarymuscle LIKE '%bicep%'";
const char *sql = [character cStringUsingEncoding:NSASCIIStringEncoding];
sqlite3_stmt *sqlStatement;
if(sqlite3_prepare(db, sql, -1, &sqlStatement, NULL) != SQLITE_OK)
{
NSLog(#"Problem with prepare statement: %s", sqlite3_errmsg(db));
}else{
while (sqlite3_step(sqlStatement)==SQLITE_ROW) {
sqlColumns * author = [[sqlColumns alloc] init];
author.Name = [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement,1)];
author.Muscle = [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement,2)];
author.Description = [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement, 3)];
author.File= [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement, 4)];
author.Sets= [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement, 5)];
author.Reps= [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement, 6)];
author.Equipment= [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement, 7)];
author.PrimaryMuscle= [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement, 8)];
author.SecondaryMuscle= [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement, 9)];
author.Difficulty= [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement, 10)];
[_theauthors addObject:author];
}
}
sqlite3_finalize(sqlStatement);
}
#catch (NSException *exception) {
NSLog(#"Problem with prepare statement: %s", sqlite3_errmsg(db));
}
#finally {
sqlite3_close(db);
return _theauthors;
}
}
Now you should see my problem, the query is directly inside the array, I want to be able to control what the query is dependent on what the user selected in the UITableview controller before.

Answer 1

Table view delegate didSelectRowAtIndexPath triggers when user clicks on row in tableView
assuming you do have a tableView .
inside this function you can "query" what row was selected by switching indexPath.row
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSInteger row = indexPath.row;
//lest examine the selected row
switch(row)
{
case 0:
{
//call function with string (for 0)
break;
}
case 1:
{
//call function with string (for 1)
break;
}
//etc..
}
}
also I assume you do have or can make this function that will lets say get integer and trigger the needed sql query.