beginning i os part 2 sam kirchmeier
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iOS TrainingPart 2
Sam Kirchmeiersam@livefront.com
@skirchmeier
Tuesday, March 20, 2012
Getting Started
•MobileMarch_Part_2_Start
•https://github.com/skirchmeier/mobilemarch-2012-ios
Tuesday, March 20, 2012
•MobileMarch_Part_2_Start
•https://github.com/skirchmeier/mobilemarch-2012-ios
Tuesday, March 20, 2012
Topics
•Storyboards
•Navigation Controllers
•Table View Controllers
Tuesday, March 20, 2012
Goals
1. Display a list of tomorrow’s sessions
2. Display a live Twitter feed
3. Bask in the glory of our iOS prowess
Tuesday, March 20, 2012
Storyboards
Tuesday, March 20, 2012
ScenesView Controllers
SeguesTransitions
Tuesday, March 20, 2012
Tuesday, March 20, 2012
Scene
Tuesday, March 20, 2012
Scene
Segue
Tuesday, March 20, 2012
Segues- (IBAction)showAboutView:(id)sender{ // Use presentModalViewController to // display the view controller.}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{ // Grab a reference to the view controller via // [segue destinationViewController].}
Old Way
New Way
Tuesday, March 20, 2012
Demo
Tuesday, March 20, 2012
Goal #1Display a list of sessions
Tuesday, March 20, 2012
Navigation Controller
Tuesday, March 20, 2012
Tuesday, March 20, 2012
Tuesday, March 20, 2012
View Controller 1 View Controller 2
Tuesday, March 20, 2012
Demo
Tuesday, March 20, 2012
Table View Controller
Tuesday, March 20, 2012
Tuesday, March 20, 2012
Tuesday, March 20, 2012
Navigation Controller
Tuesday, March 20, 2012
Navigation Controller
View Controller
Tuesday, March 20, 2012
Navigation Controller
View Controller
Table View
Tuesday, March 20, 2012
Navigation Controller
View Controller
Table View
Navigation Controller
Table View Controller
Table ViewBuilt In
Tuesday, March 20, 2012
Navigation Controller
View Controller
Table View
Tuesday, March 20, 2012
Navigation Controller
View Controller
Table View
Delegate
Data Source
Tuesday, March 20, 2012
Navigation Controller
View Controller
Table View
Delegate
Data SourceData Source Object
Number of rowsNumber of sections
Data to display in each row
Tuesday, March 20, 2012
Navigation Controller
View Controller
Table View
Delegate ObjectHandle touch events
Header and footer viewsRearrange rows
Delegate
Data SourceData Source Object
Number of rowsNumber of sections
Data to display in each row
Tuesday, March 20, 2012
Navigation Controller
View Controller
Table View
Delegate ObjectHandle touch events
Header and footer viewsRearrange rows
Delegate
Data SourceData Source Object
Number of rowsNumber of sections
Data to display in each row
UITableViewDataSource
UITableViewDelegate
Tuesday, March 20, 2012
Navigation Controller
Table View Controller
Table ViewBuilt In
Tuesday, March 20, 2012
Navigation Controller
Table View Controller
Table ViewBuilt In
Data Source
Delegate
Tuesday, March 20, 2012
UITableViewDataSource- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{ // Return the number of rows here.}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{ static NSString *CellIdentifier = @"Cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
// Configure the cell here. return cell;}
Tuesday, March 20, 2012
UITableViewDelegate– tableView:didSelectRowAtIndexPath:
– tableView:heightForRowAtIndexPath:
– tableView:viewForHeaderInSection:
– tableView:viewForFooterInSection:
(and lots more)
Tuesday, March 20, 2012
UITableViewCell
Tuesday, March 20, 2012
Basic
Tuesday, March 20, 2012
Right Detail
Tuesday, March 20, 2012
Left Detail
Tuesday, March 20, 2012
Subtitle
Tuesday, March 20, 2012
Demo
Tuesday, March 20, 2012
Goal #2Display a Twitter feed
Tuesday, March 20, 2012
Twitter Framework
Tuesday, March 20, 2012
TWRequestTWRequest *request = [[TWRequest alloc] initWithURL:URL parameters:parameters requestMethod:TWRequestMethodGET];
[request performRequestWithHandler:^( NSData *responseData, NSHTTPURLResponse *urlResponse, NSError *error){ // Invoked after the response is complete. // Parse response and display tweets.}];
Tuesday, March 20, 2012
^(NSData *responseData, NSHTTPURLResponse *urlResponse, NSError *error){ // Invoked after the response is complete. // Parse response and display tweets.}
Request Handler Block
[request performRequestWithHandler: ];Request Handler Block
Tuesday, March 20, 2012
Threads[request performRequestWithHandler: ];Request Handler Block
This handler is not guaranteed to be called on any particular
thread.
Apple
Tuesday, March 20, 2012
Danger^(NSData *responseData, NSHTTPURLResponse *urlResponse, NSError *error){ // Parse the Twitter response. ...
// Assign an array of tweets to our tweets property. ...
// Reload the table view. // This might not work! [self.tableView reloadData];}
Request Handler Block
Tuesday, March 20, 2012
OK^(NSData *responseData, NSHTTPURLResponse *urlResponse, NSError *error){ // Parse the Twitter response. ...
// Assign an array of tweets to our tweets property. ...
// Reload the table view. This will work! [self.tableView performSelectorOnMainThread:@selector(reloadData) withObject:nil waitUntilDone:NO];}
Request Handler Block
Tuesday, March 20, 2012
JSON
{ "completed_in": 0.108, "page": 1, "results_per_page": 100, "query": "%23mobilemarch+OR+%40mobilemarchtc", ... "results": [ { "created_at": "Thu, 15 Mar 2012 16:41:16 +0000", "from_user": "teruterubouzu", "text": "@mobilemarchtc How late ...", ... }, { "created_at": "Thu, 15 Mar 2012 14:20:49 +0000", "from_user": "billyspringer", "text": "RT @smbmsp: RT @philson: ...", ...
Twitter RequestGET http://search.twitter.com/search.json
Twitter Response
Tuesday, March 20, 2012
Twitter ResponseNSData
[NSJSONSerialization JSONObjectWithData: options:0 error:&error];
Twitter Response NSData
Twitter ResponseNSDictionary
Tuesday, March 20, 2012
Demo
Tuesday, March 20, 2012
Next Steps
•Start your own app!
•Apple’s Getting Started Guide
•Apple’s Sample Code
•WWDC Videos
Tuesday, March 20, 2012
#prowess
Sam Kirchmeier, Livefront@skirchmeier
Bob McCune, TapHarmonic@bobmccune
Tuesday, March 20, 2012
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