データベースに x & y タッチ座標値を挿入する必要があります。しかし、データベースに2回保存しています。長押しすると、タッチ座標が取得され、button_tag のタグが挿入されます。しかし、私は一度長押しすると、値が2回保存されるのはなぜですか
テーブル:
button_tag xcoor ycoor
2 123.5 320.9
23 123.5 320.9
- (void)tapTest:(UILongPressGestureRecognizer *)sender {
NSLog(@"coordinate is %f %f", [sender locationInView:wbCont.scrollView].x, [sender locationInView:wbCont.scrollView].y);
xcor = [sender locationInView:wbCont.scrollView].x;
ycor = [sender locationInView:wbCont.scrollView].y;
universal_button_tag = arc4random() % 99;
NSLog(@"Universal Button tag: %d",universal_button_tag);
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *path = [documentsDirectory stringByAppendingPathComponent:@"db.sqlite"];
NSLog(@"filepath %@",path);
if (sqlite3_open([path UTF8String], &database) == SQLITE_OK) {
const char *sql = [[NSString stringWithFormat:@"SELECT button_tag,xcoor,ycoor FROM touch where button_tag='%d' AND xcoor = '%f' AND ycoor = '%f'",universal_button_tag,xcor,ycor] cStringUsingEncoding:NSUTF8StringEncoding];
NSLog(@"sql is %s",sql);
BOOL favExist = false;
sqlite3_stmt *statement, *addStmt;
if (sqlite3_prepare_v2(database, sql, -1, &statement, NULL) == SQLITE_OK) {
// We "step" through the results - once for each row.
while (sqlite3_step(statement) == SQLITE_ROW) {
favExist = true;
}
}
if(!favExist){
//Changes
const char *sqlInsert = [[NSString stringWithFormat:@"insert into touch (button_tag,xcoor,ycoor) values ('%d','%f','%f')", universal_button_tag,xcor,ycor] cStringUsingEncoding:NSUTF8StringEncoding];
//----
NSLog(@"sql insert is %s",sqlInsert);
// [catID release];
if(sqlite3_prepare_v2(database, sqlInsert, -1, &addStmt, NULL) != SQLITE_OK)
NSAssert1(0, @"Error while creating add statement. '%s'", sqlite3_errmsg(database));
NSLog(@"error is %s",sqlite3_errmsg(database));
if(SQLITE_DONE != sqlite3_step(addStmt))
NSAssert1(0, @"Error while inserting data. '%s'", sqlite3_errmsg(database));
}
}
}