sqlite ios : attempt to write a readonly database

Question

I use a sqlite database for a project. I can do queries like SELECT but impossible to do INSERTs! On the simulator the INSERT works properly. As soon as I compile on my iPod

Answer 1

All you need to do is change the root that you are saving your SQLite file in you phone which is readonly at the moment. make these changes :

Add these codes to your AppDelegate :

.h file:

@property (nonatomic,retain) NSFileManager *fileMgr;
@property (nonatomic,retain) NSString *homeDir;
@property (nonatomic,retain) NSString *title;

.m file:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    [self checkAndCreateDatabase];
    return YES;
}

-(NSString *)GetDocumentDirectory{
    fileMgr = [NSFileManager defaultManager];
    homeDir = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
    return homeDir;
}

    -(void) checkAndCreateDatabase{
    BOOL success;
    NSFileManager *fileManager = [NSFileManager defaultManager];
    NSString *databasePath = [self.GetDocumentDirectory stringByAppendingPathComponent:@"YOUR DATABASE NAME.sqlite"];
    success = [fileManager fileExistsAtPath:databasePath];
    if(success) {
        NSLog(@"working");
        return;}
    else{
        NSLog(@"notworking");
    NSString *databasePathFromApp = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"YOUR DATABASE NAME.sqlite"];
    [fileManager copyItemAtPath:databasePathFromApp toPath:databasePath error:nil];
    }
}

Also in your SQLite class add these lines :

.h file:

@property (nonatomic,retain) NSFileManager *fileMgr;
@property (nonatomic,retain) NSString *homeDir;

.m file:

-(NSString *)GetDocumentDirectory{
    fileMgr = [NSFileManager defaultManager];
    homeDir = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
    return homeDir;
}

and also in INSERT and SELECT make these changes :

NSString *dbPath = [self.GetDocumentDirectory stringByAppendingPathComponent:@"YOUR DATABASE NAME.sqlite"];
    const char *dbpath = [dbPath UTF8String];

Hope it helps :)