Introduction iPhone Development

Talk about the iPhone app development process, given at the Amsterdam CocoaHeads meeting, January 13, 2011.

Transcript

1. Introduction iPhone Development Axel Roest axel@axel.nu 1
2. Overview No installation No ƒancy stuƒƒ No explanation of Objective-C (unless asked) ? --> Direct Step-by-step walk through 2
3. Overview No installation No ƒancy stuƒƒ No explanation of Objective-C (unless asked) ? --> Direct Step-by-step walk through End Result 2
4. Requirements Intel Mac XCode (iPhone/iPad) 3
5. Design iPhone & iPad apps should look good Get a Designer Get a Developer Design first, implement later 4
6. Design #2 Bierviltjes Paper prototyping Templates Stencil kits iterate-iterate-iterate 5
10. Now What? Get Coding! 9
11. Now What? Get Coding! Two Basic Ways Code vs Interface Builder Objective-C 9
12. Now What? Get Coding! Two Basic Ways Code vs Interface Builder Objective-C 9
13. Now What? Get Coding! Two Basic Ways Code vs Interface Builder Objective-C 9
14. Interface Builder Create NIB/XIB files Drag & Drop GUI items Create ‘live’ objects Make connections between objects 10
15. Start Coding Find appropriate template Test-code-test-rinse-repeat 11
16. Start Coding Find appropriate template Test-code-test-rinse-repeat Let’s get cracking! 11
17. TableView Delegate DataSource 12
18. TableView Delegate DataSource TableCell 12
19. Delegate Actions on a TableView are send here - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath 13
20. DataSource Requests for data is send here - (NSInteger)numberOfSectionsInTableView: (UITableView *)aTableView - (NSInteger)tableView:(UITableView *)aTableView numberOfRowsInSection:(NSInteger)section - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 14
21. TableView cells - (UITableViewCell *)tableView:(UITableView *)tableView !! ! ! cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"CellIdentifier"; // Dequeue or create a cell of the appropriate type. UITableViewCell *cell = [tableView !! ! ! ! dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] !! ! ! ! ! ! ! initWithStyle:UITableViewCellStyleDefault !! ! ! ! ! ! reuseIdentifier:CellIdentifier] autorelease]; } // Configure this cell. cell.textLabel.text = [NSString stringWithFormat:@"%d: %@", !! ! ! ! indexPath.row,[sites objectAtIndex:indexPath.row]]; return cell; } 15
22. Improvements 16
23. Improvements Edit UITableView 16
24. Improvements Edit UITableView Check for internet (Apple Must) 16
25. Improvements Edit UITableView Check for internet (Apple Must) Spinning wheel + Asynchronous loading 16
26. Improvements Edit UITableView Check for internet (Apple Must) Spinning wheel + Asynchronous loading Portrait + Landscape 16
27. Improvements Edit UITableView Check for internet (Apple Must) Spinning wheel + Asynchronous loading Portrait + Landscape WebView back/forward buttons 16
28. 90-90 rule “The first 90% of the code accounts for the first 90% of the development time. The remaining 10% of the code accounts for the other 90% of the development time.” [ Tom Cargill, Bell Labs-1985 ] 17
29. Next 18
30. Next Sign up as an Apple iOS Developer 18
31. Next Sign up as an Apple iOS Developer Get Certificates, Device IDs, App IDs, Provisioning and Distribution profiles 18
32. Next Sign up as an Apple iOS Developer Get Certificates, Device IDs, App IDs, Provisioning and Distribution profiles Test on real iOS device 18
33. Next Sign up as an Apple iOS Developer Get Certificates, Device IDs, App IDs, Provisioning and Distribution profiles Test on real iOS device But that’s another story 18
34. References http://developer.apple.com http://fullofdesign.ca/downloads http://developer.yahoo.com/ypatterns/about/stencils http://www.cocoadev.com http://cocoawithlove.com/ http://www.cocoaheads.nl 19
35. CocoaHeads Amsterdam 13 januari 2010 @MacHouse Amsterdam Axel Roest 20