2014/10/15 下午 10:16:02

iphone Programming Glossary: writable

How to get the RGB values for a pixel on an image on the iphone

http://stackoverflow.com/questions/144250/how-to-get-the-rgb-values-for-a-pixel-on-an-image-on-the-iphone

post what I propose is at least for my requirements which include modifying pixel data a better method as it provides writable data whereas as I understand it the method provided by previous posts and at the bottom of this post provides a read only..

How can I get a writable path on the iPhone?

http://stackoverflow.com/questions/1567134/how-can-i-get-a-writable-path-on-the-iphone

can I get a writable path on the iPhone I am posting this question because I had a complete answer for this written out for another post when.. allowed to write into specific locations. iphone filesystems share improve this question There are three kinds of writable paths to consider the first is Documents where you store things you want to keep and make available to the user through.. and very similar to the Documents directory there is the Library folder where you store configuration files and writable databases that you also want to keep around but you don't want the user to be able to mess with through iTunes NSArray paths..

SQLite3 database doesn't actually insert data - iPhone

http://stackoverflow.com/questions/2785211/sqlite3-database-doesnt-actually-insert-data-iphone

is appreciated iphone objective c sqlite3 share improve this question Make sure you have moved the database to writable directory such as NSDocumentDirectory and NSLibraryDirectory . The database file you see in XCode resides in the MainBunble.. and NSLibraryDirectory . The database file you see in XCode resides in the MainBunble which is readable but not writable. You need to add a method to check at runtime if the database exists in your decided writable location if it doesn't exist.. is readable but not writable. You need to add a method to check at runtime if the database exists in your decided writable location if it doesn't exist use NSFileManager to copy the database file to the writable directory path. Here's a snippet..

Where would you place your SQLite database file in an iPhone app?

http://stackoverflow.com/questions/717108/where-would-you-place-your-sqlite-database-file-in-an-iphone-app

folder. Then in your application delegate code file in the appDidFinishLaunching method you need to first check if a writable copy of the the SQLite file has already been created ie a copy of the SQLite file has been created in the users document.. else you would overwrite it with the default Xcode SQLite copy If no then you copy the SQLite file there to make it writable. See the below code example to do this this has been taken from Apple's SQLite books code sample where this method is called.. books code sample where this method is called from the application delegates appDidFinishLaunching method. Creates a writable copy of the bundled default database in the application Documents directory. void createEditableCopyOfDatabaseIfNeeded First..