sqlite database creation in iOS - ios

Question

How can I get database path for creating database in iOS?
I know how to execute queries but I want first create database from document directory.

Answer 1

Try this
-(void)copyDatabaseIfNeeded
{
#try
{
NSFileManager *fmgr=[NSFileManager defaultManager];
NSError *error;
NSArray *paths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
NSString *path=[paths objectAtIndex:0];
dbPath=[path stringByAppendingPathComponent:#"Data.sqlite"];
if(![fmgr fileExistsAtPath:dbPath]){
NSString *defaultDBPath=[[[NSBundle mainBundle]resourcePath]stringByAppendingPathComponent:#"Addict.sqlite"];
if(![fmgr copyItemAtPath:defaultDBPath toPath:dbPath error:&error])
NSLog(#"failure message----%#",[error localizedDescription]);
}
}
#catch (NSException *exception)
{
NSLog(#"Exception: %#", exception);
}
}
-(NSString *)getDBPath
{
//Search for standard documents using NSSearchPathForDirectoriesInDomains
//First Param = Searching the documents directory
//Second Param = Searching the Users directory and not the System
//Expand any tildes and identify home directories.
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory , NSUserDomainMask, YES);
NSString *documentsDir = [paths objectAtIndex:0];
return [documentsDir stringByAppendingPathComponent:#"Data.sqlite"];
}
-(void)openDatabase
{
[self copyDatabaseIfNeeded];
if (sqlite3_open([dbPath UTF8String], &database) == SQLITE_OK)
{
//Database Opened
NSLog(#"Database opened");
}
else
{
NSLog(#"Database cannot be opened");
}
}
-(void)closeDatabase
{
sqlite3_close(database);
}
Hope it helps you..

Answer 2

// Database handling
NSString *databaseFile = [[NSBundle mainBundle] pathForResource:#"DBname" ofType:#"sqlite"];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *basePath = ([paths count] > 0) ? [paths objectAtIndex:0] : nil;
NSString *dbPath = [basePath stringByAppendingPathComponent:[NSString stringWithFormat:#"DBname.sqlite"]];
NSFileManager *fm=[NSFileManager defaultManager];
if(![fm fileExistsAtPath:dbPath]){
[fm copyItemAtPath:databaseFile toPath:dbPath error:nil];
}
maybe this will help you

Answer 3

Try this :
// Get data
NSString *docsDir;
NSArray *dirPaths;
// Get the documents directory
dirPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
docsDir = [dirPaths objectAtIndex:0];
// Build the path to the database file
databasePath = [[NSString alloc] initWithString:[docsDir stringByAppendingPathComponent:#"dbFileName.db"]];
NSFileManager *filemgr = [NSFileManager defaultManager];
if(![filemgr fileExistsAtPath:databasePath])
{
NSData *content = [[NSData alloc] initWithContentsOfFile:[[NSBundle mainBundle] pathForResource:#"dbFileName" ofType:#"db"] options:NSDataReadingMapped error:nil];
[content writeToFile:databasePath options:NSDataWritingAtomic error:nil];
}

Answer 4

Yes I got answer thank you.
//Here this may help you for select data from database
-(NSMutableDictionary*)SelectAllData
{
AppDelegate *AppDel=(AppDelegate *)[[UIApplication sharedApplication]delegate];
[AppDel checkAndCreateDatabase];
NSMutableArray *itemArray =[[[NSMutableArray alloc]init] autorelease];
if(sqlite3_open([AppDel.databasePath UTF8String],&database) == SQLITE_OK)
{
NSString *sql =[NSString stringWithFormat:#"Select *from table"];
sqlite3_stmt *selectstmt;
if(sqlite3_prepare_v2(database, [sql UTF8String], -1, &selectstmt, NULL) == SQLITE_OK)
{
while(sqlite3_step(selectstmt) == SQLITE_ROW)
{
NSMutableDictionary *dicOfItem=[[NSMutableDictionary alloc]init];
[dicOfItem setValue:[NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 0)] forKey:#"_id_article"];
[dicOfItem setValue:[NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 1)] forKey:#"type"];
[dicOfItem setValue:[NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 2)] forKey:#"Id"];
[itemArray addObject:dicOfItem];
[dicOfItem release];
}
sqlite3_close(database);
}
}
else
sqlite3_close(database);
//Even though the open call failed, close the database connection to release all the memory.
NSMutableDictionary *dictresp = [NSMutableDictionary dictionaryWithObjectsAndKeys:itemArray,#"objects", nil];
return dictresp;
}
//Here this may help you for inserting data from database
- (void) insert_intable
{
AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
[appDelegate checkAndCreateDatabase];
for(int i=0;i<[[articleDict objectForKey:#"objects"] count];i++)
{
if (sqlite3_open([[appDelegate databasePath] UTF8String], &database) == SQLITE_OK) {
insertStmt=nil;
if(insertStmt == nil) {
NSString *sqlTmp=[NSString stringWithFormat:#"Insert into table(Type,Category_id) Values('%#','%#')",articleType,catID];
const char *sqlStmt=[sqlTmp UTF8String];
int returnValue = sqlite3_prepare_v2(database, sqlStmt, -1, &insertStmt, NULL);
if (returnValue==SQLITE_OK) {
NSLog(#"Success");
} else {
NSLog(#"Unsuccess");
}
sqlite3_step(insertStmt);
sqlite3_finalize(insertStmt);
sqlite3_close(database);
}
}
}
}

Answer 5

use the following code to set your Sqlite path
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{
databaseName=#"yourfileName.sqlite";
NSArray *documentPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDir = [documentPaths objectAtIndex:0];
databasePath = [documentsDir stringByAppendingPathComponent:databaseName];
[self checkAndCreateDatabase];
}
-(void) checkAndCreateDatabase {
BOOL success;
NSFileManager *fileManager = [NSFileManager defaultManager];
success = [fileManager fileExistsAtPath:databasePath];
if(success) return;
else
printf("NO File found");
NSString *databasePathFromApp = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:databaseName];
[fileManager copyItemAtPath:databasePathFromApp toPath:databasePath error:nil];
}