How can I get my window with tableview to show immediately?

How can I get my window with tableview to show immediately rather than having user wait?

The tableview is dependent data that takes awhile to compute so I would prefer to have window with a progress indicator appear immediately. I have selected "Visible at launch" within the Attributes inspector, yet the window doesn't load until the computed data is finished--about 20 seconds.

Answers


Don’t load the tableView immediately on launch—just have the window show with the tableView empty.

Later, in your application delegate’s:

- (void)applicationDidFinishLaunching:(NSNotification *)notification;

method (or in a document didLoad method) fire off the loading of your data.


A solution was to run my slow computation method on a separate thread by using this:

[self performSelectorInBackground:@selector(analysizeAndSetDataForErrorWordList:) withObject:completeErrorWordList];

Within this method, however, I needed to call methods back on the main thread. I was able to do this with this:

[self performSelectorOnMainThread:@selector(addToErrorFoundArrayController:) withObject:thisData waitUntilDone:NO];

Now the window bearing the array controller-bound tableView no longer blocks but displays while it's being loaded with the processing data. Now my user is dazzled rather than confused.


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