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Objective-C locate file path sample

- (void)getDBpath
{
    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: @"mainframe.db"]];
    //NSLog(@"DB full path name: %@", databasePath);
    
    NSFileManager *fileMgr = [NSFileManager defaultManager];
    BOOL success = [fileMgr fileExistsAtPath:databasePath];
    if (!success) {
        NSLog(@"Cannot locate database file '%@'.", databasePath);
    }
}