iOS Question Minimising Graphic Memory Use

[RichardN]

My experience to date with B4i leads me to conclude that iOS hand-held devices whilst very user friendly are rather lacking in processing power when compared with their Android counterparts.

With that in mind:

...A user is to select a TableView cell as a means of viewing one of 60 larger graphics retrieved from a database. The full-res graphic is about 1000x1500px (about 400k) designed to be shown at nearly full-screen together with some textual information. Out of choice I would like to display a thumbnail in the TableView to enhance the user experience but there may be memory issues. My question is.... what is the best strategy for speed and memory utilisation:

Option 1. Down-sample the existing database hi-res graphics to populate the TableView thumbnails - How ?

Option 2. Produce thumbnail size graphics and add them to the database. Use the thumbnails to populate the TableView, giving a fatter database but leaner memory profile.

Option 3. Don't use that many graphics in the TableView at all because the screen performance deteriorates.

 

[Erel]

The file size is not important. Only the image size. 1000 x 1500 is a large image. Each image will require about 6mb.

The solution in B4A would have been to use LoadBitmapSample. There isn't an equivalent method in B4i (there isn't a similar native API in iOS). So if you can add the thumbnails to the database.