I have successfully used a .sqlite file when I store it in my project folder. I'm now trying to do the same thing, except pull the file from online instead of storing it locally. Any suggestions based on this code? I'm getting the error message "Problem with prepare statement" from the bottom of the code.
NSData *fetchedData = [NSData dataWithContentsOfURL:[NSURL URLWithString:#"https://www.dropbox.com/s/zpcieluo2qv43vy/builds.sqlite?dl=1"]];
NSString *documentsPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
NSString *filePath = [documentsPath stringByAppendingPathComponent:#"builds.sqlite"];
[fetchedData writeToFile:filePath atomically:YES];
NSFileManager *fileMgr = [NSFileManager defaultManager];
BOOL success = [fileMgr fileExistsAtPath:filePath];
if (!success) {
NSLog(#"Cannot locate database file '%#'.", filePath);
}
if (!(sqlite3_open([filePath UTF8String], &db) == SQLITE_OK)) {
NSLog(#"An error has occured.");
}
const char *sql = "SELECT * FROM builds";
sqlite3_stmt *sqlStatement;
if (sqlite3_prepare(db, sql, -1, &sqlStatement, NULL) != SQLITE_OK) {
NSLog(#"Problem with prepare statement");
}
Your dropbox URL will not work, you need to use:
https://www.dropbox.com/s/zpcieluo2qv43vy/builds.sqlite?dl=1
or you are just downloading a webpage...
Related
I don't know how to fix this error, I go to "Build Phases" and add sqlit.db file to Bundle resources but it still error.
Have anyone solve the problem this thing?.
Click Here to see code
-(void) initDatabase{
dbName = #"MBox_karaoke.db";
BOOL success;
NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *writeableDBPath = [documentsDirectory stringByAppendingPathComponent:dbName];
success = [fileManager fileExistsAtPath:writeableDBPath];
if(success){
return;
}
NSString *defaultDBPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:dbName];
success = [fileManager copyItemAtPath:defaultDBPath toPath:writeableDBPath error:&error];
if (!success) {
// NSAssert1(0, #"Failed to create writable database file with message '%#'.", [error localizedDescription]);
NSLog(#"Database created failed, %#",[error localizedDescription]);
}
else {
NSLog(#"Database created successfully");
}
}
As an error states resource file not found.
Make sure you copied the database file in bundle. When you drag database to project navigator, make sure that you have checked "Copy item if needed".
Following solution working for me.
-(void)initializeDatabase {
NSError *error;
NSFileManager *fm = [NSFileManager defaultManager];
NSArray *docPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *docDir = [docPaths objectAtIndex:0];
NSString *docPath = [docDir stringByAppendingPathComponent:#"Test.sqlite"];
NSString *template_path = [[NSBundle mainBundle] pathForResource:#"Test" ofType:#"sqlite"];
if (![fm fileExistsAtPath:docPath])
[fm copyItemAtPath:template_path toPath:docPath error:&error];
//-====
}
Your code is correct but some time database file doesn't select target membership that your database doesn't copy your path that it's this type error occur.
First Remove/Uninstall your install app.
Please, Select your database file in xcode and see your target membership is check or uncheck. Uncheck that select check. (See below image)
Run the project simulator and check your database available in your path. Database available that see your database browse contain is correct.
NSLog("Path: %#",defaultDBPath);
My answer
+ (NSString *)databasePath
{
NSArray *paths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *sql_Path=[paths objectAtIndex:0];
NSString *dbPath=[sql_Path stringByAppendingPathComponent:#"MBox_karaoke.sqlite"];
NSFileManager *fileMgr=[NSFileManager defaultManager];
BOOL success;
NSError *error;
success=[fileMgr fileExistsAtPath:dbPath];
if (!success)
{
NSString *path=[[[NSBundle mainBundle]resourcePath]stringByAppendingPathComponent:#"MBox_karaoke.sqlite"];
success=[fileMgr copyItemAtPath:path toPath:dbPath error:&error];
}
return dbPath;
}
Create Table and here My Table Name is Account
+ (void) createTableForAccount
{
char *error;
NSString *filePath =[self databasePath];
if (sqlite3_open([filePath UTF8String], &database) == SQLITE_OK)
{
NSString *strQuery=[NSString stringWithFormat:#"CREATE TABLE IF NOT EXISTS Account(id TEXT,name TEXT);"];
sqlite3_exec(database, [strQuery UTF8String], NULL, NULL, &error);
}
else
{
NSAssert(0, #"Table failed to create");
NSLog(#"Account Table Not Created");
}
sqlite3_close(database);
}
Insert Data
+ (void)insertAccountDetails:(NSString *)id:(NSString *)name
{
NSString *dbPath=[self databasePath];
if(sqlite3_open([dbPath UTF8String],&database)==SQLITE_OK)
{
NSString *strQuery = [NSString stringWithFormat:#"INSERT into Account(id,name) values(?,?);"];
if(sqlite3_prepare_v2(database,[strQuery UTF8String] , -1, &stment, NULL)==SQLITE_OK)
{
sqlite3_bind_text(stment, 1, [[self checkEmpty:id] UTF8String], -1, SQLITE_TRANSIENT);
sqlite3_bind_text(stment, 2, [[self checkEmpty:name] UTF8String] , -1, SQLITE_TRANSIENT);
sqlite3_step(stment);
sqlite3_reset(stment);
}
sqlite3_finalize(stment);
}
sqlite3_close(database);
}
Fetch or Get Data from Table
+ (void)getAccountDetails
{
NSString *dbPath = [self databasePath];
if (sqlite3_open([dbPath UTF8String], &database) == SQLITE_OK)
{
NSString *query = [NSString stringWithFormat:#"SELECT id,name from Account"];
if (sqlite3_prepare_v2(database, [query UTF8String], -1, &stment, nil) == SQLITE_OK)
{
while (sqlite3_step(stment) == SQLITE_ROW)
{
NSString *idString = [[self charToString: (char *)sqlite3_column_text(stment, 0)]base64DecodedString];
NSString *nameString = [[self charToString: (char *)sqlite3_column_text(stment, 1)]base64DecodedString];
NSMutableArray *arrayId = [[NSMutableArray alloc]init];
NSMutableArray *arrayName = [[NSMutableArray alloc]init];
[arrayId addObject:idString];
[arrayName addObject:nameString];
}
sqlite3_reset(stment);
}
sqlite3_finalize(stment);
}
sqlite3_close(database);
}
Other Methods which called inside the db insert and fetch
insert
+ (NSString *)checkEmpty:(NSString *)check
{
if([check isEqual:[NSNull null]])
check = #" ";
return check;
}
Fetch method
+ (NSString*)charToString:(const char*)chart
{
NSString *string = #" ";
if(string)
{
chart = [self checkEmptyChar:chart];
string=[NSString stringWithUTF8String:chart];
}
return string;
}
+ (const char *)checkEmptyChar:(const char *)check
{
NSString *string = #" ";
if (check == NULL)
check = [string UTF8String];
return check;
}
I am trying to create DB using Sqlite3 in my iOS application. If I create DB in a sub folder of documents dir, it is NOT creating DB, it is failing to open or create database. If I don't create DB in a subfolder, instead if i directly create it in document directory. It is creating it properly.
It is giving path as databasePath: "/var/mobile/Containers/Data/Application/986037DB-6FA0-4066-9977-C5D7A075C5E7/Documents/MailFolder/INBOX.db"
But it is failing at -> if (sqlite3_open(dbpath, &database) == SQLITE_OK) –
Below is my code creating DB in a sub folder. Could someone correct me what is wrong here?
- (BOOL) createFolderMailDB :(NSString *) dbName {
NSString *docsDir;
NSArray *dirPaths;
// Get the documents directory
dirPaths = NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES);
//docsDir =[[dirPaths objectAtIndex:0] stringByAppendingPathComponent:#"MailFolder"];
NSString *documentsPath = [dirPaths objectAtIndex:0];
docsDir = [documentsPath stringByAppendingPathComponent:#"/MailFolder"];
//docsDir = dirPaths[0];
// Build the path to the database file
NSMutableString *finalDBPath = [[NSMutableString alloc]init];
[finalDBPath appendString:dbName];
[finalDBPath appendString:#".db"];
databasePath = [[NSString alloc] initWithString: [docsDir stringByAppendingPathComponent: finalDBPath]];
NSLog(#"databasePath: %#", databasePath);
BOOL isSuccess = YES;
NSFileManager *filemgr = [NSFileManager defaultManager];
if ([filemgr fileExistsAtPath: databasePath] == NO)
{
const char *dbpath = [databasePath UTF8String];
if (sqlite3_open(dbpath, &database) == SQLITE_OK)
{
char *errMsg;
const char *sql_stmt = "create table if not exists MailFolderDBTable (emailid text, foldername text, messagedata text)";
if (sqlite3_exec(database, sql_stmt, NULL, NULL, &errMsg)
!= SQLITE_OK)
{
isSuccess = NO;
NSLog(#"Failed to create table");
}
sqlite3_close(database);
return isSuccess;
}
else {
isSuccess = NO;
NSLog(#"Failed to open/create database");
}
}
return isSuccess;
}
The folder in which you are placing this database must exist or else attempts to create database there will fail. So create that folder before proceeding with the creation of the database:
NSString *documentsPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject];
NSString *databaseFolder = [documentsPath stringByAppendingPathComponent:#"MailFolder"];
NSFileManager *filemgr = [NSFileManager defaultManager];
if (![filemgr fileExistsAtPath:databaseFolder]) {
NSError *error;
if (![filemgr createDirectoryAtPath:databaseFolder withIntermediateDirectories:FALSE attributes:nil error:&error]) {
NSLog(#"Error creating %#: %#", databaseFolder, error);
}
}
NSString *databasePath = [[databaseFolder stringByAppendingPathComponent:dbName] stringByAppendingPathExtension:#"db"];
if (![filemgr fileExistsAtPath:databasePath]) {
// database creation logic
}
I have a pre-populated SQLite db created with the Firefox SQLite Manager plugin.
I have included the DB to my project, added to the target and copied into destination group's folder. Then I created this function to copy the DB in the Documents folder:
-(void) createEditableDatabase{
BOOL success;
NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error;
NSString *writableDB = [[NSHomeDirectory() stringByAppendingPathComponent:#"Documents"] stringByAppendingPathComponent:#"DB.sqlite"];
success = [fileManager fileExistsAtPath:writableDB];
if (success){
return;
}
NSString *defaultPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:#"DB.sqlite"];
error = nil;
success = [fileManager copyItemAtPath:defaultPath toPath:writableDB error:&error];
if (!success){
NSAssert1(0, #"Failed to create writable database file:%#", [error localizedDescription]);
}
if (error){
NSLog(#"error = %#", [error localizedDescription]);
}
}
then I call this function in -(void)viewDidLoad and if I check in the simulator folder, a copy of the DB appears once I start the app.
The app runs fine, I can populate a UICollectionView with the data retrieved from the DB.
Then, when I try to insert some data, I receive no error but no data is added to the DB.
This is the code I use in MyViewController.h :
#property (nonatomic) NSString *DBPath;
#property (nonatomic) sqlite3 *myAppSQLITE;
This is the code I use in MyViewController.m :
-(IBAction)done:(id)sender{
DBPath = [[NSHomeDirectory() stringByAppendingPathComponent:#"Documents"] stringByAppendingPathComponent:#"DB.sqlite"];
const char *dbpath = [DBPath UTF8String];
sqlite3_stmt *statement;
if (sqlite3_open(dbpath, &myAppSQLITE) == SQLITE_OK){
NSString *querySQL = [NSString stringWithFormat:#"INSERT INTO myTable (name, age) VALUES('frank',30);"];
const char *query_stmt = [querySQL UTF8String];
if (sqlite3_prepare_v2(myAppSQLITE, query_stmt, -1, &statement, NULL) == SQLITE_OK){
sqlite3_finalize(statement);
}
sqlite3_close(myAppSQLITE);
}
}
I receive no error/warning but the data is never updated, even with a [self.collectionView reloadData];. If I run the same query with SQLite Manager in Firefox, everything works fine. If i open the DB inside the Simulator Documents folder with SQLite Manager, the DB is intact with no updated data. I have the same result running the app with my iPad.
How can I solve this?
Thank you in advance.
P.S: David's suggestion is right, this is a better way to create an editable DB:
- (void) createEditableDatabase{
BOOL success;
NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *writableDBPath = [documentsDirectory stringByAppendingPathComponent:#"DB.sqlite"];
success = [fileManager fileExistsAtPath:writableDBPath];
if (success){
return;
}
NSString *defaultDBPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:#"DB.sqlite"];
success = [fileManager copyItemAtPath:defaultDBPath toPath:writableDBPath error:&error];
if (!success) {
NSAssert1(0, #"Failed to create writable database file with message '%#'.", [error localizedDescription]);
}
}
P.S2: this could be an appropriate error checking, let me know if it's right or not.
int rc;
while ((rc = sqlite3_step(statement)) == SQLITE_ROW){
NSLog(#"ROW");
}
if (rc != SQLITE_DONE){
NSLog(#"%s: step error: %d: %s", __FUNCTION__, rc, sqlite3_errmsg(myAppSQLite));
}
You never actually execute the query by calling sqlite3_step.
You want:
if (sqlite3_prepare_v2(myAppSQLITE, query_stmt, -1, &statement, NULL) == SQLITE_OK){
sqlite3_step(statement); // add appropriate error checking
sqlite3_finalize(statement);
}
I am trying to delete all the rows in database for that I wrote following codes ..
- (id)init {
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *databasePath = [documentsDirectory stringByAppendingPathComponent:#"dataBase.sqlite3"];
bool databaseAlreadyExists = [[NSFileManager defaultManager] fileExistsAtPath:databasePath];
if (!databaseAlreadyExists){
NSString *databasePathFromApp = [[NSBundle mainBundle] pathForResource:#"dataBase" ofType:#"sqlite3"];
[[NSFileManager defaultManager] copyItemAtPath:databasePathFromApp toPath:databasePath error:nil];
}
if (sqlite3_open([databasePath UTF8String], &_database) == SQLITE_OK){
}
return self;
}
-(void)deleteAll{
NSString *query = #"DELETE FROM user_info";
sqlite3_stmt *statement = nil;
if (sqlite3_prepare_v2(_database, [query UTF8String], -1, &statement, nil) == SQLITE_OK) {
NSLog(#"Should delete..");
}
sqlite3_finalize(statement);
sqlite3_close(_database);
}
But when I rebuild the app data data appears. Whats wrong I am doing?
You never call sqlite3_step to actually execute the query.
Also, you close the database in the wrong place. Your close should be done opposite of the open.
First of all, get the database path after that open database
NSString *dbPath1=[SqliteManager getDataBasePath];
if (sqlite3_open([dbPath1 UTF8String], &database) == SQLITE_OK)
{
NSLog(#"opened the data base");
const char *sql = "delete from travels";
if(sqlite3_prepare_v2(database, sql, -1, &deletestmt, NULL) == SQLITE_OK)
if(SQLITE_DONE != sqlite3_step(deletestmt))
NSAssert1(0, #"Error while deleting. '%s'", sqlite3_errmsg(database));
else
isdeleted=YES;
}
sqlite3_reset(deletestmt);
sqlite3_close(database);
write in ur method inside.....
Getting Database Path....
+(NSString *)getDataBasePath
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory , NSUserDomainMask, YES);
NSString *documentsDir = [paths objectAtIndex:0];
NSLog(#"file Path is %#",documentsDir);
return [documentsDir stringByAppendingPathComponent:#"Give ur Sqlite Filename"];
}
Try a conditional if:
if(sqlite3_prepare_v2(database, sql, -1, &deletestmt, NULL) != SQLITE_OK)
This is the code that I have used in Appdelegate.m to copy the database
- (void) copyDatabaseIfNeeded {
NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error;
NSString *dbPath = [self getDBPath];
BOOL success = [fileManager fileExistsAtPath:dbPath];
if(!success) {
NSString *defaultDBPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:#"LocalSongs.sqlite"];
success = [fileManager copyItemAtPath:defaultDBPath toPath:dbPath error:&error];
if (!success)
NSAssert1(0, #"Failed to create writable database file with message '%#'.", [error localizedDescription]);
}
}
And this is used to get the DBPath
- (NSString *) getDBPath {
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentationDirectory , NSUserDomainMask, YES);
NSString *documentsDir = [paths objectAtIndex:0];
return [documentsDir stringByAppendingPathComponent:#"LocalSongs.sqlite"];
}
This is my playlist Insert method
-(NSString *)InsertPlaylist :(NSString *)PlaylistName
{
NSLog(#"passed");
NSString *status;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory , NSUserDomainMask, YES);
NSString *documentsDir = [paths objectAtIndex:0];
NSString *dbPath=[[NSString alloc]initWithString:[documentsDir stringByAppendingPathComponent:#"LocalSongs.sqlite"]];
NSLog(#"Database Path %#",dbPath);
sqlite3_stmt *statement;
if (sqlite3_open([dbPath UTF8String], &database) == SQLITE_OK) {
NSLog(#"open");
NSString *insertSQL = [NSString stringWithFormat: #"INSERT INTO LOCALPLAYLIST (PLAYLISTNAME,getdate()) VALUES (\"%#\")",PlaylistName];
const char *insert_stmt = [insertSQL UTF8String];
sqlite3_prepare_v2(database, insert_stmt, -1, &statement, NULL);
if (sqlite3_step(statement) == SQLITE_DONE)
{
status=#"Playlist Created";
}
else
{
status=#"Error occured";
}
return status;
}
}
The problem I have is this prepare_v2 is always become notdone. It always execute the else part.
if (sqlite3_step(statement) == SQLITE_DONE)
What is the problem with this? Please help me
I think you have an error with your query: you are supposed to put a column name in the place you put getdate(), i.e. instead of
INSERT INTO LOCALPLAYLIST (PLAYLISTNAME,getdate()) VALUES (\"%#\")
you should use something like
INSERT INTO LOCALPLAYLIST (PLAYLISTNAME,MYDATECOLUMN) VALUES (\"%#\",getdate())
After sqlite3_prepare_v2 the statement pointer is NULL?
Compare the return values of sqlite3_prepare_v2 and sqlite3_step with the ones in http://www.sqlite.org/c3ref/c_abort.html to get a better insight on what's going wrong