- (void) copyDatabaseIfNeeded
{
BOOL success;
NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *writableDBPath = [documentsDirectory stringByAppendingPathComponent:ABC.Sqlite];
success = [fileManager fileExistsAtPath:writableDBPath];
if (success) return;
// The writable database does not exist, so copy the default to the appropriate location.
NSString *defaultDBPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:ABC.Sqlite];
success = [fileManager copyItemAtPath:defaultDBPath toPath:writableDBPath error:&error];
if (success)
{
NSURL *url=[NSURL URLWithString:WSURL2];
} else
{
NSLog(#"Failed to create writable database file with message '%#'.", [error localizedDescription]);
}
}
I need to add any code for to View Sqlite File ??
I tried by adding these in Plist: UIFileSharingEnabled, CFBundleDisplayName
How can i view my SQLIte file in iTunes ?
Referred links:
How to enable file sharing for my app?, UIFileSharingEnabled has no effect
If i enabled iTunes file sharing option in my app to backup app data in PC, will appStore rejects the app ?
You are not creating the file in the Documents directory, but the Library directory:
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES);
// ^^^^^^^^^^^^^^^^^^
You want NSDocumentDirectory.
Related
Everytime I run my app, database address is changed so my update or retrieval is not successfully working.
Any one can help me why this is happening with me... here my code to copy my database to the directory.
(BOOL)createDB
{
NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error;
NSString *dbPath = [self getDBPath];
dataPath=dbPath;
databasePath = dbPath;
NSLog(#"Path is: %#",dbPath);
BOOL success = [fileManager fileExistsAtPath:dbPath];
if(!success) {
NSString *defaultDBPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:#"babynames.sqlite"];
success = [fileManager copyItemAtPath:defaultDBPath toPath:dbPath error:&error];
if (!success)
NSAssert1(0, #"Failed to create writable database file with message '%#'.", [error localizedDescription]);
}
return success;
}
Here is getDBPathCode
- (NSString *)getDBPath
{`NSSearchPathForDirectoriesInDomains`
//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];
//NSLog(#"dbpath : %#",documentsDir);
return [documentsDir stringByAppendingPathComponent:#"babynames.sqlite"];'
}
I developed iPhone app in which i got stuck at one point,
What i want to do is,
I want to copy my Database from bundle to folder inside document directory
When i try to create folder inside DocDir it doesn't getting created and it shows error,
Failed to create MyDB.sql file with message 'The operation couldn’t be completed. (Cocoa error 4.)
Here is my code snippet,
NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory , NSUserDomainMask, YES);
NSString *documentsDir = [[paths objectAtIndex:0] stringByAppendingString:#"/NewFolder/"];
NSString *dbPath = [documentsDir stringByAppendingPathComponent:#"MyDB.sql"];
BOOL success = [fileManager fileExistsAtPath:dbPath];
if(!success) {
NSString *defaultDBPath = [[NSBundle mainBundle] pathForResource:#"MyDB" ofType:#"sql"];
success = [fileManager copyItemAtPath:defaultDBPath toPath:dbPath error:&error];
if (!success)
NSAssert1(0, #"Failed to create writable database file with message '%#'.", [error localizedDescription]);
}
Where i am doing mistake? please help
Thanks in advance.
Try to create directory by following code, may you get help..
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0]; // Get documents folder
NSString *dataPath = [documentsDirectory stringByAppendingPathComponent:#"/YourFolder"];
if (![[NSFileManager defaultManager] fileExistsAtPath:dataPath])//Check
[[NSFileManager defaultManager] createDirectoryAtPath:dataPath withIntermediateDirectories:NO attributes:nil error:&error]; //Will Create folder
What is better way to copy sqlite database file(.db) in ios application means that in NSBundle or in Document folder.
You can try this
- (void)createEditableCopyOfDatabaseIfNeeded
{
// First, test for existence.
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;
// The writable database does not exist, so copy the default to the appropriate location.
NSString *defaultDBPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:#"KURANDB2.sqlite"];
success = [fileManager copyItemAtPath:defaultDBPath toPath:writableDBPath error:&error];
if (!success) {
NSAssert1(0, #"Failed to create writable database file with message '%#'.", [error localizedDescription]);
}
}
I have created a myDB.sqlite database from SQLite Manager firefox addon. I want to add this myDB.sqlite file to my project. Then I can write functions to get data from tables.
I tried to add the myDB.sqlite file to project folder & create a filepath like this. But I think this filepath is wrong.
-(NSString *) filePath{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *path = [documentsDirectory stringByAppendingPathComponent:#"document.sqlite"];
return path;
}
Does it correct to add myDB.sqlite file to the project folder? or where should I save this myDB.sqlite file & what is the filepath I should use?
add your myDB.sqlite file in your project. by right click your project name=> add files to ""projectName", then add it.
to get your file path you can add this in your appDelegate
- (void) copyDatabaseIfNeeded {
//Using NSFileManager we can perform many file system operations.
NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error;
NSString *dbPath = [self getDBPath];
BOOL success = [fileManager fileExistsAtPath:dbPath];
if(!success) {
NSString *defaultDBPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:#"database.sqlite"];
success = [fileManager copyItemAtPath:defaultDBPath toPath:dbPath error:&error];
if (!success)
NSAssert1(0, #"Failed to create writable database file with message '%#'.", [error localizedDescription]);
}
}
- (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];
//NSLog(#"dbpath : %#",documentsDir);
return [documentsDir stringByAppendingPathComponent:#"myDB.sqlite"];
}
in your did finish with launching method call [self copyDatabaseIfNeeded];
I assume you have successfully copied sqlite db into project's folder. So you have sqlite Database in your app's bundle now.
So you need to copy database from app's bundle to document directory of device/simulator using following code. Write these in AppDelegate.m
- (void) copyDatabaseIfNeeded
{
NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error;
NSString *folderPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES) objectAtIndex:0];
// First, test for existence.
if (![fileManager fileExistsAtPath:folderPath])
[fileManager createDirectoryAtPath:folderPath withIntermediateDirectories:YES attributes:nil error:&error]; //Create folder
NSString *dbPath = [folderPath stringByAppendingPathComponent:#"document.sqlite"];
BOOL success = [fileManager fileExistsAtPath:dbPath];
if(!success)
{
NSString *defaultDBPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:#"document.sqlite"];
success = [fileManager copyItemAtPath:defaultDBPath toPath:dbPath error:&error];
if (!success)
NSAssert1(0, #"document.sqlite : Failed to create writable database file with message '%#'.", [error localizedDescription]);
}
}
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
/** Database copy is not exist **/
[self copyDatabaseIfNeeded];
// Override point for customization after application launch.
return YES;
}
-(void)addSqlFileIfNotExists {
NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES);
NSString *documentDirectory = [paths objectAtIndex:0];
NSString *writableDBPath = [documentDirectory stringByAppendingPathComponent:#"document.sqlite"];
BOOL exits = [fileManager fileExistsAtPath:writableDBPath];
if(exits) return;
NSString *defaultDBPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:#"document.sqlite"];
BOOL exit = [fileManager copyItemAtPath:defaultDBPath toPath:writableDBPath error:&error];
if(!exit)
NSLog(#"%#",[error localizedDescription]);
}
I want to delete an image from my iPhone app.
I use the method below, passing the name of the image as an argument.
The problem is that the image isn't deleted.
- (void)removeImage:(NSString*)fileName {
NSFileManager *fileManager = [NSFileManager defaultManager];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *fullPath = [documentsDirectory stringByAppendingPathComponent:
[NSString stringWithFormat:#"%#.png", fileName]];
[fileManager removeItemAtPath: fullPath error:NULL];
NSLog(#"image removed: %#", fullPath);
NSString *appFolderPath = [[NSBundle mainBundle] resourcePath];
NSLog(#"Directory Contents:\n%#", [fileManager directoryContentsAtPath: appFolderPath]);
}
The last two lines show the content in my app directory and the image I want to delete is still there. What am I doing wrong?
You are trying to delete a file in the Documents directory. You then read the contents of the bundle resources directory. These are not the same directory.
If you're trying to delete a file in the Documents directory, the you should rad that directory in your NSLog() at the end. If you're trying to delete a file inside your bundle, this is impossible. App bundles are signed and cannot be modified.
your code looks ok, so try adding some 'NSError' object to you code:
- (void)removeImage:(NSString*)fileName {
NSFileManager *fileManager = [NSFileManager defaultManager];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *fullPath = [documentsDirectory stringByAppendingPathComponent:
[NSString stringWithFormat:#"%#.png", fileName]];
NSError *error = nil;
if(![fileManager removeItemAtPath: fullPath error:&error]) {
NSLog(#"Delete failed:%#", error);
} else {
NSLog(#"image removed: %#", fullPath);
}
NSString *appFolderPath = [[NSBundle mainBundle] resourcePath];
NSLog(#"Directory Contents:\n%#", [fileManager directoryContentsAtPath: appFolderPath]);
}
In the code above I passed a NSError the error parameter of removeItemAtPath. If the system can't delete the file, this method will return NO and fill the error object with the error raised.
Based on your comment I found out that you are trying to delete the default.png and replace it with another one. Unfortunately, this is impossible. The image default.png is a part of your application bundle, which cannot be modified once it has been created and signed (this is a security measure from Apple, so applications cannot change after they have been reviewed). The only locations where you can create and delete files is inside the sandbox given to your application (the Documents folder).