two PickerViews of a single Sqlite3 Database - objective-c

Question

I must be doing something wrong here. My SQLite database is working. However, I cannot seem to populate the tname into a picker view while the picked populates three text fields tname, latitude, and longitude.
Info: Two picker views that are independent from each other, they both read the same sqlite db.
#import "ViewController.h"
#interface ViewController ()
{
NSMutableArray *array1;
sqlite3 *towerDB;
NSString *dbPathString;
}
#end
#implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
//UIPickerView *pickerview1;
//array1 = [[NSMutableArray alloc]init];
[[self pickerview1]setDelegate:self];
[[self pickerview1]setDataSource:self];
[self displayTower];
}
- (void)displayTower
{
array1 = [[NSMutableArray alloc] init];
sqlite3_stmt *statement;
if (sqlite3_open([dbPathString UTF8String], &towerDB)==SQLITE_OK) {
[array1 removeAllObjects];
NSString *querySql = [NSString stringWithFormat:#"SELECT * FROM TOWERS"];
const char* query_sql = [querySql UTF8String];
// sqlite3_clear_bindings(statement);
// sqlite3_reset(statement);
if (sqlite3_prepare(towerDB, query_sql, -1, &statement, NULL)==SQLITE_OK) // NOT OK
//This Code works in a TableView!!
//Will NOT work in a PickerView
{
while (sqlite3_step(statement)==SQLITE_ROW)
{
NSString *tname = [[NSString alloc]initWithUTF8String:(const char *)sqlite3_column_text(statement, 1)];
NSString *latitude = [[NSString alloc]initWithUTF8String:(const char *)sqlite3_column_text(statement, 2)];
NSString *longitude = [[NSString alloc]initWithUTF8String:(const char *)sqlite3_column_text(statement, 3)];
// NSString *ds2 = [[NSString alloc]initWithUTF8String:(const char *)sqlite3_column_text(statement, 4)];
NSString *PickerTower = [[NSString alloc] initWithFormat:#"%#", tname];
NSString *lat1 = [[NSString alloc] initWithFormat:#"%#", latitude];
NSString *long1 = [[NSString alloc] initWithFormat:#"%#", longitude];
NSArray *array = [[NSArray alloc] initWithObjects:PickerTower, nil];
[array1 addObject:array];
NSLog(#"Lat/Long %# / %#", lat1, long1);
}
}
}
}
#pragma mark Picker Data Source Methods
-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView {
//ONE Colume
return 1;
}
-(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component {
//data view how many items?
return [array1 count];
// return [_array2 count];
}
#pragma mark Picker Delegate Methods
-(NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component {
return [array1 objectAtIndex:row];
//return [self->array1 objectAtIndex:row];
// array1 = [[NSMutableArray alloc] init];
}
-(void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
long select = row;
NSLog(#"PickerView %ld", select);
}
#end

Answer 1

You have to changed this code in the method name displayTower and code lines -
[array1 addObject:array];
NSLog(#"Lat/Long %# / %#", lat1, long1);
with -
[array1 addObject:array];
NSLog(#"Lat/Long %# / %#", lat1, long1);
[[self pickerview1] reloadAllComponents];
may be it will help you, or feel free.