I'm saving an image in the document directory and then I save its path inside a SQLite DB. After the process finishes I try to retrieve the image path from the db but I can't get it working and I really have no Idea why. On the simulator the code works but on a real device it doesn't.
This is the code I've used to save the img path and to retrieve the img path and display the image inside an UIImageView
This is the code to save the image:
NSString *stringURL = #"http://addons.cdn.mozilla.net/user-media/addon_icons/80/80205-64.png?modified=1317416463";
NSURL *url = [NSURL URLWithString:stringURL];
NSData *urlData = [NSData dataWithContentsOfURL:url];
NSString *filePath;
if ( urlData )
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
filePath = [NSString stringWithFormat:#"%#/%#", documentsDirectory,#"test.png"];
[urlData writeToFile:filePath atomically:YES];
}
NSLog(#"path:%#",filePath);
[self saveImgPath:filePath];
This is the saveImgPath method:
-(void) saveImgPath:(NSString*)path{
sqlite3_stmt *statement;
const char *dbpath = [databasePath UTF8String];
if (sqlite3_open(dbpath, &ImgDB) == SQLITE_OK)
{
NSString *insertSQL = [NSString stringWithFormat: #"INSERT INTO ImgPath (path) VALUES (\"%#\")",path];
const char *insert_stmt = [insertSQL UTF8String];
if(sqlite3_prepare_v2(ImgDB, insert_stmt, -1, &statement, NULL) == SQLITE_OK)
{
sqlite3_step(statement);
}
sqlite3_finalize(statement);
sqlite3_close(ImgDB);
}
[self performSegueWithIdentifier:#"sfondo" sender:self];
}
And this is how I retrieve it:
-(NSString*)getImgPath{
NSString* imgPath;
const char *dbpath = [[self GetDatabasePath] UTF8String];
sqlite3_stmt *statement;
if (sqlite3_open(dbpath, &ImgDB) == SQLITE_OK)
{
NSString *checkSQL = [NSString stringWithFormat: #"SELECT * FROM ImgPath"];
const char *insert_stmt = [checkSQL UTF8String];
sqlite3_prepare_v2(ImgDB, insert_stmt, -1, &statement, NULL);
if (sqlite3_step(statement) == SQLITE_ERROR)
NSAssert1(0,#"Errore %s",sqlite3_errmsg(ImgDB));
else
sqlite3_step(statement);
sqlite3_finalize(statement);
sqlite3_close(ImgDB);
}
return imgPath;
}
The DB is initialized correctly and the NSLog of the paths are correct but I get 0 results when I try to retrieve the image path
the first view is word list view controller and it has a word table containing word_id,word meaning and sentence and this data i need to pass on the other view having 1 text field which i add to display the word and two text views to display meaning and sentence.
Here is the code-
- (void)getListData
{
//tableData = [[NSMutableArray alloc]init];
sqlite3_stmt *statement;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *path = [documentsDirectory stringByAppendingPathComponent:#"dexternotedb.sqlite"];
if (sqlite3_open([path UTF8String], &database) == SQLITE_OK) {
WordListViewController *temp = APP_DELEGATE.wordListViewController;
NSLog(#"word id %ld",(long)[temp.wordId integerValue]);
NSString *sql=[NSString stringWithFormat:#"SELECT word_id, word ,meaning,sentence FROM words WHERE word_id=\"%#\"",APP_DELEGATE.wordListViewController.wordId];
const char *read_stmt = [sql UTF8String];
NSLog(#"select query%#",sql);
if(sqlite3_prepare_v2(database, read_stmt, -1, &statement, NULL) == SQLITE_OK){
//sqlite3_bind_int(statement, 1, [temp.wordId integerValue]);
while(sqlite3_step(statement) == SQLITE_ROW) {
NSString *word1 = [NSString stringWithUTF8String:(char *)sqlite3_column_text(statement, 1)];
word.text = word1;
NSString *meaning1 = [NSString stringWithUTF8String:(char *)sqlite3_column_text(statement, 2)];
meaning.text = meaning1;
NSString *sentence1 = [NSString stringWithUTF8String:(char *)sqlite3_column_text(statement, 3)];
Sentence.text = sentence1;
}
sqlite3_finalize(statement);
} else
{
sqlite3_close(database);
NSAssert1(0, #"Failed to open database with message '%s'.", sqlite3_errmsg(database));
}
}
Simply Store Value in NSUserDefaults
[[NSUserDefaults standardUserDefaults] setObject:#"String" forKey:#"KeyName"];
[[NSUserDefaults standardUserDefaults] synchronize];
and whenever data is required fetch data from NSUserDefaults in entire app
NSString *str= [[NSUserDefaults standardUserDefaults] valueForKey:#"KeyName"];
Everything in this function seems to work as expected, just no record actually shows up in the database table. If I enter the sql directly through the Firefox sqlite manager plugin, the record appears just fine. Probably something frustratingly stupid, any ideas?
- (IBAction)buttonInsertRecord:(id)sender
{
// initializing db file access
NSFileManager *fileMgr = [NSFileManager defaultManager];
NSString *dbPath = [[[NSBundle mainBundle] resourcePath ]stringByAppendingPathComponent:#"KJV.sqlite"];
// testing to see if database was found
BOOL success = [fileMgr fileExistsAtPath:dbPath];
if(!success)
{
// database not found
labelStatus.text = #"database not found";
}
else
{
// database not found
labelStatus.text = #"database found";
}
sqlite3_stmt *statement;
sqlite3 *dbPointer;
if (sqlite3_open(dbPath.UTF8String, &dbPointer) == SQLITE_OK)
{
NSString *insertSQL = [NSString stringWithFormat: #"INSERT INTO users (user_name, user_id) VALUES ('testuser', null);"];
const char *insert_stmt = [insertSQL UTF8String];
sqlite3_prepare_v2(dbPointer, insert_stmt, -1, &statement, NULL);
if (sqlite3_step(statement) == SQLITE_DONE)
{
labelStatus.text = #"added";
}
else
{
labelStatus.text = #"failed";
}
sqlite3_finalize(statement);
sqlite3_close(dbPointer);
}
}
//your database is not writable because its in the bundle.
NSString *dbPath = [[[NSBundle mainBundle] resourcePath ]stringByAppendingPathComponent:#"KJV.sqlite"];
if you want a readable/writable database, you can do this:
- (void) createEditableCopyOfDatabaseIfNeeded
{
BOOL success;
NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *writableDBPath = [documentsDirectory stringByAppendingPathComponent:#"databasename.sqlite"];
NSLog(#"writableDBPath == %#",writableDBPath);
if ([fileManager fileExistsAtPath:writableDBPath])
{
NSLog(#"Database already exist");
}
else
{
NSString *defaultDBPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:#"databasename.sqlite"];
success = [fileManager copyItemAtPath:defaultDBPath toPath:writableDBPath error:&error];
if (!success)
NSLog(#"Failed to create writable database file with message '%#'.", [error localizedDescription]);
}
}
and heres how you add your data
- (void) addToDatabase
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *databasePath = [documentsDirectory stringByAppendingPathComponent:#"databasename.sqlite"];
if(sqlite3_open([databasePath UTF8String], &mDatabase_update) == SQLITE_OK)
{
NSString *sqlQuery = [NSString stringWithFormat: #"Insert into table
.
.
.
.
I tried to update an entry in my table like this:
NSFileManager *fileMgr=[NSFileManager defaultManager];
NSString *dbPath=[[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:#"quizDB.sqlite"];
if ([fileMgr fileExistsAtPath:dbPath]) {
NSLog(#"DB does exist!");//displayed
}
const char *dbpath = [dbPath UTF8String];
sqlite3_stmt *updateStmt;
if (sqlite3_open(dbpath, &contactDB) == SQLITE_OK)
{
NSLog(#"%i",id_quiz);//displayed, in a test case it display 1 which is a quiz ID in the table
NSString *querySql=[NSString stringWithFormat:#"Update quiz set etat=1 where id=\"%i\"",id_quiz];
const char*sql=[querySql UTF8String];
sqlite3_prepare_v2(contactDB, sql, -1, &updateStmt, NULL);
if(SQLITE_DONE != sqlite3_step(updateStmt))
{
NSAssert1(0, #"Error while updating. '%s'", sqlite3_errmsg(contactDB));
}
else{
sqlite3_reset(updateStmt);
NSLog(#"Update done successfully!");//this is also displayed, i guess everything is ok then and the entry is updated
}
sqlite3_finalize(updateStmt);
sqlite3_close(contactDB);
}
In the log, i got the message: Update done successfully! so i assumed that everything is, however when i check the database within SQLite Manager in Mozilla Firefox, the entry is not updated. Am i missing something? thanx for help
first copy your database from resource to document dir:
- (void) checkAndCreateDatabase
{
NSString *database_Name =#"quizDB.sqlite"
NSArray *documentPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDir = [documentPaths objectAtIndex:0];
NSString *database_Path = [documentsDir stringByAppendingPathComponent:database_Name];
NSFileManager *fileManager = [NSFileManager defaultManager];
if(![fileManager fileExistsAtPath:database_Path])
{
NSString *databasePathFromApp = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:database_Name];
[fileManager removeItemAtPath:database_Path error:nil];
[fileManager copyItemAtPath:databasePathFromApp toPath:database_Path error:nil];
}
else
{
NSString *databasePathFromApp = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:database_Name];
[fileManager copyItemAtPath:databasePathFromApp toPath:database_Path error:nil];
}
}
and after you update your database:
- (void) UpdateDatabase
{
sqlite3 *contactDB;
sqlite3_stmt *updateStmt;
NSString *database_Name =#"quizDB.sqlite"
NSArray *documentPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDir = [documentPaths objectAtIndex:0];
NSString *dbpath = [documentsDir stringByAppendingPathComponent:database_Name];
if(sqlite3_open([dbpath UTF8String], &contactDB) == SQLITE_OK)
{
NSString *querySql=[NSString stringWithFormat:#"Update quiz set etat=1 where id=\"%i\"",id_quiz];
const char*sql=[querySql UTF8String];
if(sqlite3_prepare_v2(contactDB,sql, -1, &updateStmt, NULL) == SQLITE_OK)
{
if(SQLITE_DONE != sqlite3_step(updateStmt))
{
NSAssert1(0, #"Error while updating. '%s'", sqlite3_errmsg(contactDB));
}
else{
sqlite3_reset(updateStmt);
NSLog(#"Update done successfully!");
}
}
sqlite3_finalize(updateStmt);
}
sqlite3_close(contactDB);
}
and check your database which save in documentdir not in resource
I am trying to insert data into my SQLite database. I have imported all the neccassry frameworks and database files nedded for my project. In my controller class xib there are two textfields and a button. I want the data entered into both of the text fields saved in my database when I click on the button.
In my app delagate I have created two functions, one function to append the path of the database, and the other to insert data into the database. In the insert function, I check for certain conditions, i.e., if data gets added, an alert view should be displayed showing the record added, but when I add a new record it always goes into the else block, which is an error.
-(void)checkAndCreateDB {
NSString* databaseName = #"login.sqlite";
NSArray *documentPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDir = [documentPaths objectAtIndex:0];
NSString *databasePath=[documentsDir stringByAppendingPathComponent:#"login.sqlite"];
databasePath = [documentsDir stringByAppendingPathComponent:databaseName];
BOOL success;
NSFileManager *fileManager = [NSFileManager defaultManager];
success = [fileManager fileExistsAtPath:databasePath];
if(success) return;
NSString *databasePathFromApp = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:databaseName];
[fileManager copyItemAtPath:databasePathFromApp toPath:databasePath error:nil];
}
-(void)insertData{
sqlite3 *database;
sqlite3_stmt *statement;
NSArray *documentPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDir = [documentPaths objectAtIndex:0];
NSString *databasePath=[documentsDir stringByAppendingPathComponent:#"login.sqlite"];
if(sqlite3_open([databasePath UTF8String], &database) == SQLITE_OK)
{
NSString *insertSQL = [NSString stringWithFormat: #"INSERT INTO Loginchk (uname,password) VALUES ('%#',' %#');",Gunameq,Gpassq];
const char *insert_stmt = [insertSQL UTF8String];
if(sqlite3_prepare_v2(database, insert_stmt, -1, &statement, nil)== SQLITE_OK)
{
sqlite3_bind_text(statement, 1, [Gunameq UTF8String], -1, NULL);
sqlite3_bind_text(statement, 2, [Gpassq UTF8String], -1, NULL);
}
if(sqlite3_step(statement)==SQLITE_DONE)
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Add Record" message:#"Contact Added" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil];
[alert show];
[alert release];
alert=nil;
}
else
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"record" message:#"record not created" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil];
[alert show];
[alert release];
alert=nil;
}
// Release the compiled statement from memory
sqlite3_finalize(statement);
sqlite3_close(database);
}
}
This is my login controller class. Here I have declared a function through which I access my app delegate's functions.
-(IBAction)buttonPressed:(id)sender
{
Gpassq=Password.text;
Gunameq=Uname.text;
NSLog(#"%#%#",Gunameq,Gpassq);
AddListAppDelegate *appDelegate =(AddListAppDelegate *)[[UIApplication sharedApplication]delegate];
[appDelegate insertData];
}
Please solve this problem.
static sqlite3_stmt *insertStmt = nil;
if(insertStmt == nil)
{
insertSql = "INSERT INTO Loginchk (uname,password) VALUES(?,?)";
if(sqlite3_prepare_v2(database, insertSql, -1, &insertStmt, NULL) != SQLITE_OK)
NSAssert1(0, #"Error while creating insert statement. '%s'", sqlite3_errmsg(database));
}
sqlite3_bind_text(insertStmt, 1, [Gunameq UTF8String], -1, SQLITE_TRANSIENT);
sqlite3_bind_text(insertStmt, 2, [Gpassq UTF8String], -1, SQLITE_TRANSIENT);
if(SQLITE_DONE != sqlite3_step(insertStmt))
NSAssert1(0, #"Error while inserting data. '%s'", sqlite3_errmsg(database));
else
NSLog("Inserted");
//Reset the add statement.
sqlite3_reset(insertStmt);
insertStmt = nil;
In above you can see. If you are binding data no need to have stringWithFormat. Just put question marks and than bind text.
Hope it helps.
this code may be run
-(void) insert:key1:key2:key3
{
databaseName= #"db3.sqlite";
NSArray *documentPaths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);
NSString *documentsDir=[documentPaths objectAtIndex:0];
databasePath=[documentsDir stringByAppendingPathComponent:databaseName];
sqlite3 *database;
if (sqlite3_open([databasePath UTF8String], &database) == SQLITE_OK) {
NSString *stmnt=[[[NSString alloc]initWithFormat:#"insert into login values(\"%#\",\"%#\",\"%#\")", key1,key2,key3] autorelease];
const char *sqlStatement = [stmnt UTF8String];
sqlite3_stmt *compiledStatement;
if (sqlite3_prepare_v2(database, sqlStatement,-1, &compiledStatement,NULL) == SQLITE_OK)
{
if (SQLITE_DONE!=sqlite3_step(compiledStatement))
{
UIAlertView *al=[[UIAlertView alloc] initWithTitle:#"INFO"
message:#"Registration Fail"
delegate:self
cancelButtonTitle:#"ok"
otherButtonTitles:nil];
[al show];
[al release];
}
else {
UIAlertView *al=[[UIAlertView alloc] initWithTitle:#"INFO"
message:#"Registerd"
delegate:self
cancelButtonTitle:#"ok"
otherButtonTitles:nil];
[al show];
[al release];
}
}
sqlite3_reset(compiledStatement);
}
sqlite3_close(database);
}
-(IBAction)clicked:(id)sender
{
NSString *t1=[[NSString alloc]initWithFormat:#"%#",txt1.text];
NSString *t5=[[NSString alloc]initWithFormat:#"%#",txt2.text];
NSString *t3=[[NSString alloc]initWithFormat:#"%#",txt3.text];
//NSString *t2=[[NSString alloc]init];
//NSInteger t3;
//NSString *t3=[[NSString alloc]init];
//t1=txt1.text;
//t2=txt2.text;
//t3=txt3.text;
[self insert:t1:t5:t3];
}
another way around for insert is
// Create insert statement for the address
NSString *insertStatement = [NSString stringWithFormat:#"INSERT INTO ADDRESS (STREETNAME, STREETNUMBER, PERSONID) VALUES (\"%#\", \"%#\", \"%d\")", person.address.streetName, person.address.streetNumber, personID];
if ( sqlite3_exec(databaseHandle, [insertStatement UTF8String], NULL, NULL, &error) == SQLITE_OK)
{
NSLog(#"Person inserted.");
}
else
{
NSLog(#"Error: %s", error);
}
Try this code:
-(void)addItem{
//for saving the data into database
if(addStmt == nil) {
const char *sql = "insert into employee(name, address) Values(?, ?)";
if(sqlite3_prepare_v2(database, sql, -1, &addStmt, NULL) != SQLITE_OK)
NSAssert1(0, #"Error while creating add statement. '%s'", sqlite3_errmsg(database));
}
sqlite3_bind_text(addStmt, 1, [name UTF8String], -1, SQLITE_TRANSIENT);
sqlite3_bind_text(addStmt, 2, [address UTF8String], -1, SQLITE_TRANSIENT);
NSLog(#"%#",name);
NSLog(#"%#",address);
if(SQLITE_DONE != sqlite3_step(addStmt))
NSAssert1(0, #"Error while inserting data. '%s'", sqlite3_errmsg(database));
else
//SQLite provides a method to get the last primary key inserted by using sqlite3_last_insert_rowid
rowID = sqlite3_last_insert_rowid(database);
//Reset the add statement.
sqlite3_reset(addStmt);
}
+ (void) getInitialDataToDisplay:(NSString *)dbPath {
//for retrieving data from database
InsertDataAppDelegate *appDelegate = (InsertDataAppDelegate *)[[UIApplication sharedApplication] delegate];
if (sqlite3_open([dbPath UTF8String], &database) == SQLITE_OK) {
const char *sql = "select name, address from employee";
sqlite3_stmt *selectstmt;
if(sqlite3_prepare_v2(database, sql, -1, &selectstmt, NULL) == SQLITE_OK) {
while(sqlite3_step(selectstmt) == SQLITE_ROW) {
NSInteger primaryKey = sqlite3_column_int(selectstmt, 0);
//NSInteger primaryKey = sqlite3_column_int(selectstmt, 0);
Item *Obj = [[Item alloc]initWithPrimaryKey:primaryKey];
Obj.name = [NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 0)];
Obj.address=[NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 1)];
Obj.isDirty = NO;
[appDelegate.array addObject:Obj];
[Obj release];
}
}
}
else
sqlite3_close(database); //Even though the open call failed, close the database connection to release all the memory.
}
- (IBAction)sbumitbuttoncliked:(id)sender
{
sqlite3 *database;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *path = [documentsDirectory stringByAppendingPathComponent:#"somefile1.sqlite"];
if (sqlite3_open([path UTF8String], &database) == SQLITE_OK)
{
sqlite3_stmt *statment = nil;
NSString *queryString = [NSString stringWithFormat:#"Insert into form1 (name,password,phoneno)values(\'%#\',\'%#\',\'%#\')",textobj1.text, textobj2.text,textobj3.text];
NSLog(#"%#",queryString);
const char *sql = [queryString UTF8String];
sqlite3_prepare_v2(database, sql, -1, &statment, NULL);
if (textobj1.text.length==0||textobj2.text.length==0||textobj3.text.length==0) {
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:#"Success" message:#"Not Registered " delegate:nil cancelButtonTitle:#"OK" otherButtonTitles: nil ];
[alert show];
}
else if (sqlite3_step(statment) == SQLITE_DONE)
{
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:#"Success" message:#"you have successfully registered" delegate:nil cancelButtonTitle:#"OK" otherButtonTitles: nil ];
[alert show];
[self dismissModalViewControllerAnimated:YES];
}
sqlite3_finalize(statment);
}