ART40545 - Basics of Programming: iOS
Week 11
Instruments Lesson
Heap memory is essentially a large pool of memory (typically per process) from which the running program can request chunks. This is typically called dynamic allocation.
It is different from the Stack, where "automatic variables" are allocated. So, for example, when you define in a C function a pointer variable, enough space to hold a memory address is allocated on the stack. However, you will often need to dynamically allocate space (With malloc) on the heap and then provide the address where this memory chunk starts to the pointer.
Protocol Review
Projects analysis
Next Quarter:
in App
iBeacon
Restore State
Week 10
Best block description (in my opinion)Social mixer from 5:00pm to 6:00 pm
// NSLog(@"%s SQLITE_ERROR '%s' (%1d)", __FUNCTION__, sqlite3_errmsg(_tripsDB), sqlite3_errcode(_tripsDB));. NSLog( @"Failed from sqlite3_step(statement) Error is: %s",sqlite3_errmsg(_tripsDB));
Dealing with other Errors: From the source
A bit on Global Breakpoints and objc_exception_throw
Unit Testing with XCTest
OSX Server and XCODE Integration
Background Fetching (In our continuing theme of accessing external data)
Reflector/Feedback
Project Help
Week 11 (OCMock, Lighter ViewControllers,CocoaPods) Possible Guests
Unice: Week 9 - Get the camera and photo library to work Week 10 - Get the map and SQL data storage to work Week 11 - Fix minor design issues (send me stuff!);
Daniel- incorporate the sqlite database, the timer and the bingo button into my project - Need Submission
Jenny- Almost done
Val: Questions about Database. (Have Submission_
Clay:
Silvia: (Have Submission)
Antti:
Sora:
Nathan:
Juan:
Aaron:
Week 9
https://developer.apple.com/library/ios/documentation/IDEs/Conceptual/xcode_guide-continuous_integration/200-Adopting_a_Continuous_Integration_Workflow/adopt_continuous_integration.html
JSON with AFNetworking
https://github.com/AFNetworking/AFNetworking
Closer Look at MVC
GDC with Dispatch/How to deal with non-responsiveness
Ipad Differences
Couple of similar apps
Unit Testing
Val - Need Timeline/Submission
Nathan design cells project running with preset data in arrays able to pass data between views.
Jenny -timer -database saving logic -loading previous games from database -ui layout, I haven't yet setup appropriate constraints
Daniel- incorporate the sqlite database, the timer and the bingo button into my project - Need Submission
Silvia- Make the + add work; make the action sheet work, camera and search in library
Clay- Week 8 – working model minus the sql lite databaseWeek 9 – integrated sql lite database saving data->Need Submission
Antti -- finish score keeping view, player management and course management; DB access already exist => the app can be used keep score for up to 4 random players on any course, but current game is not saved on disk yet
Juan-
- Populate the array of BingoSigns objects based on the image files found on the documents directory of my app (I'm stucked right now on this).
- Show images on cells in the Collection View
- Show detailed info on 2nd view controller (passed through the BingoSigns object)
- Allow the user to take a picture from 2nd View Controller to complete/check that cell
Aaron -database framework done Create all the methods for insert/update/select and have it tested.
Sora Trip Location Map ,Show trip location with city level zoom,Connect Trip Location to Trip Photos View Complete views and function – complete feature and elements
Unice-
Week 8
Methods & Definitive References
Selector Demos
Blocks
Json Loader
Github
Multi Media Stuff
Social Media
Your Project
Val
Nathan design cells project running with preset data in arrays able to pass data between views.
Jenny -timer -database saving logic -loading previous games from database -ui layout, I haven't yet setup appropriate constraints
Daniel- incorporate the sqlite database, the timer and the bingo button into my project
Silvia-
Clay-
Antti -- finish score keeping view, player management and course management; DB access already exist => the app can be used keep score for up to 4 random players on any course, but current game is not saved on disk yet
Juan-
- Populate the array of BingoSigns objects based on the image files found on the documents directory of my app (I'm stucked right now on this).
- Show images on cells in the Collection View
- Show detailed info on 2nd view controller (passed through the BingoSigns object)
- Allow the user to take a picture from 2nd View Controller to complete/check that cell
Aaron -database framework done Create all the methods for insert/update/select and have it tested.
Sora Trip Location Map ,Show trip location with city level zoom,Connect Trip Location to Trip Photos View Complete views and function – complete feature and elements
a. Add Trip –
b. List Trip –
i. Add Location Data into DB
ii. Display/Enable Location field based on Switch Selection
i. Update cell to custom format – show dates and notes
Unice -
Week 7
Job/Internship Hunting
The Stigma behind the terms: "Entry Level" and "Intern"
Example -BAD
Example -GOOD
Homework examples
Delegate Example
Protocol Example
http://www.youtube.com/watch?v=KzsPntlhLxM
What about these Blocks
Connecting to an external DB
File Uploader Using MKNetwork
Audio Recorder
Movie Player
Media Playground (for harvesting)
JSON Master.
For homework, I would like to individualize assignments based on your project.
week 7 materials
Week 6
A look at your prototypes and code brainstorming
To download legacy emulator:
xcode>preferences>downloads>components
Snippets are in ~Library/Developer/Xcode/UserData
Resizing Image - This is an older post, but makes sense
An improvised method for resampling pics
Bingo Setup
Back to sql demo
Sqlite Exercise
A look at Core Data
Week 5
From:Antti:
How to handle exceptions
1) goTo the breakpoint tab in Xcode.
2) click on the '+" button at the bottom.
3) Add Exception Breakpoint
a) In the break tab select both:
i) on Throw ii) on Catch
and build and r un.
4) These breakpoints will give you exactly where your app is crashing 90% of the times.
Homeworks
Sqlite
For terminal practice:
sqlite3 ./mydatabase.db SQLite version 3.6.12 Enter ".help" for instructions Enter SQL statements terminated with a "; " sqlite>
sqlite> create table contacts (id integer primary key autoincrement, name text, address text, phone text);
sqlite> .tables contacts
sqlite> insert into contacts (name, address, phone) values ("Bill Smith", "123 Main Street, California", "123-555-2323");
sqlite> insert into contacts (name, address, phone) values ("Mike Parks", "10 Upping Street, Idaho", "444-444-1212");
sqlite> select * from contacts;
sqlite> select * from contacts where name="Mike Parks";
sqlite> .exit
Camera
Map
Week 4
Homework and passing object references
What goes on in a header file:
Defining the variables in the brackets simply declares them instance variables.
Declaring (and synthesizing) a property generates getters and setters for the instance variable, according to the criteria within the parenthesis. This is particularly important in Objective-C because it is often by way of getters and setters that memory is managed (e.g., when a value is assigned to an ivar, it is by way of the setter that the object assigned is retained and ultimately released). Beyond a memory management strategy, the practice also promotes encapsulation and reduces the amount of trivial code that would otherwise be required.
It is very common to declare an ivar in brackets and then an associated property (as in your example), but that isn't strictly necessary. Defining the property and synthesizing is all that's required, because synthesizing the property implicitly also creates an ivar.
The approach currently suggested by Apple (in templates) is:
-Define property in header file, e.g.:
@property (assign, readonly) gameCenter;
Then synthesize & declare ivar in implementation:
@synthesize gameCenter = __ gameCenter;
The last line synthesizes the gameCenter property and asserts that whatever value is assigned to the property will be stored in the __gameCenter ivar. Again, this isn't necessary, but by defining the ivar next to the synthesizer, you are reducing the locations where you have to type the name of the ivar while still explicitly naming it.
Sqlite versus Core Data
Coding Plan based on sketches
Plist for storage
NSTimer Class
Camera
Google Maps
Week 3
A more efficient calculator code
Some more Custom Class Scripts
Data Source & Delagate Scripts
Datasources and Delegates: For now, delegates are used to extend the functionality of a class without resorting to subclassing. They provide a design pattern that maintains very loose coupling between classes, usually more generic ones like views, and those with application specific functionality. Some of the most common examples of classes that use delegates are windows (in Cocoa), tableViews, and textFields/textViews. A tableView, for example, only knows how to draw itself, and while it could be sub-classed to deal with the presentation and manipulation of the data it displays, that is counter to MVC paradigm. Delegate methods are of the
-will
-should
-did
type. They allow the application to set up constraints, pre and post processing and reactions to events. A simple scenario- Text is entered in a textField and the window containing the textField is about to close. What should be done with the input text? The window and textFields are simply containers, they don't and shouldn't know how to handle it, so their delegate is informed about what is about to occur (-windowShouldClose and -textFieldShouldResignFirstResponder for example) and it is the delegate's responsibility to allow or prevent this from taking place, or take some action before allowing it to occur.
Styling a table cell
Adding plists to our simple table from last week
collection views: grids, stacks, tiles and circular arrangements.
collection view consists of four key elements consisting of cells, supplementary views, decoration views and a layout object.
UICollectionView & UICollectionView Layout & UICollectionViewCell Classes
PROJECT COMMITMENTS :
Sora - Trip Journal
Nathan - Trip Journal
Clay - TBD
Daniel - TBD
Antii -Golf
Val - TBD
Jenny - Road Sign Game
Aaron - Trip Journal
Tom - Road Sign Game
Silvia - TBD
Juan - Road Sign Game
Unice - Trip Journal
Next week plists
Week 2
How to Sort a Dictionary object
NSString *last = @"lastName";
NSString *first = @"firstName";
NSMutableArray *array = [NSMutableArray array];
NSArray *sortedArray;
NSDictionary *dict;
dict = [NSDictionary dictionaryWithObjectsAndKeys:
@"Jo", first, @"Smith", last, nil];
[array addObject:dict];
dict = [NSDictionary dictionaryWithObjectsAndKeys:
@"Joe", first, @"Smith", last, nil];
[array addObject:dict];
dict = [NSDictionary dictionaryWithObjectsAndKeys:
@"Joe", first, @"Smythe", last, nil];
[array addObject:dict];
dict = [NSDictionary dictionaryWithObjectsAndKeys:
@"Joanne", first, @"Smith", last, nil];
[array addObject:dict];
dict = [NSDictionary dictionaryWithObjectsAndKeys:
@"Robert", first, @"Jones", last, nil];
[array addObject:dict];
//Next we sort the contents of the array by last name then first name
// The results are likely to be shown to a user
// Note the use of the localizedCaseInsensitiveCompare: selector
NSSortDescriptor *lastDescriptor =
[[NSSortDescriptor alloc] initWithKey:last
ascending:YES
selector:@selector(localizedCaseInsensitiveCompare:)];
NSSortDescriptor *firstDescriptor =
[[NSSortDescriptor alloc] initWithKey:first
ascending:YES
selector:@selector(localizedCaseInsensitiveCompare:)];
NSArray *descriptors = [NSArray arrayWithObjects:lastDescriptor, firstDescriptor, nil];
sortedArray = [array sortedArrayUsingDescriptors:descriptors];
NSLog(@"This is my NSArray: %@", [sortedArray description]);
http://stackoverflow.com/questions/19599266/invalid-context-0x0-under-ios-7-0-and-system-degradation
Discussion on projects
Catching up with the files from last week
Conditions, Functions, Enumerations and Arrays (Some basic Obj-C things )
More UI Controls and how to use 'em
Move forward with calculator assignment/Keyboard Control numeric/resign first responder/delegates
Switching Views/Storyboards
Begin Calculator App
Discuss project ideas-what type of navigation? What type of interface? What Frameworks might we need?
Week 1
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *touch = [[event allTouches] anyObject];
if ([_tempInput isFirstResponder] && [touch view] != _tempInput) {
[_tempInput resignFirstResponder];
}
[super touchesBegan:touches withEvent:event];
}
xcode tour
Book: There is a discount code of DSUG for all O'Reilly Books
http://shop.oreilly.com/product/0636920031017.do and
http://shop.oreilly.com/product/0636920032465.do
IOS Screen sizes
- Introduction to the tools, toud
-Objective C and Objective C as it relates to IOS,Variables,Datatypes,Operators,Strings,Placeholders,Conditions,Loops,
- Objective C continued. Code Snippets, Functions
-Xcode/Creating a Basic Interaction
-Temperature Converter