1. Interactive Applications Design and Development
Topic 2: Mobile application development methodologies
Basic stages of a software project
Two different approaches
Waterfall
Agile
An example methodology
A suggested methodology
By the end of this lecture you should be able to:
Understand what is meant by a project methodology
Be able to distinguish between waterfall and agile approaches
Identify a methodology suited to mobile app development

2. What are the basic stages of developing a mobile application?
Topic 2: Mobile app development methodologies
Basic stages of a software project
Two different approaches
Waterfall
Agile
An example methodology
A suggested methodology
What are the basic stages of developing a mobile application?
Define the project
Plan the project
Implement the project
Evaluate.
Deliver & support

3. Basic stages of a software project
Topic 2: Mobile app development methodologies
Basic stages of a software project
Two different approaches
Waterfall
Agile
An example methodology
A suggested methodology
Two approaches:
Waterfall
Waterfall- best method when requirements are very well specified.
Advantages of the waterfall method
Design errors are captured before any software is written saving time during the implementation phase.
Excellent technical documentation is part of the deliverables and it is easier for new programmers to get up to speed during the maintenance phase.
The approach is very structured and it is easier to measure progress by reference to clearly defined milestones.
The total cost of the project can be accurately estimated after the requirements have been defined (via the functional and user interface specifications).
Testing is easier as it can be done by reference to the scenarios defined in the functional specification.
Disadvantages of the waterfall method
Clients will often find it difficult to state their requirements at the abstract level of a functional specification and will only fully appreciate what is needed when the application is delivered.  It then becomes very difficult (and expensive) to re-engineer the application.
The model does not cater for the possibility of requirements changing during the development cycle.
A project can often take substantially longer to deliver than when developed with an iterative methodology (

4. Basic stages of a software project
Topic 2: Mobile app development methodologies
Two approaches:
Basic stages of a software project
Two different approaches
Waterfall
Agile
An example methodology
A suggested methodology
Agile
Agile
Agile Development Model is based on iterative development, wherein the entire software development life-cycle is broken down into smaller iterations (or parts). The project scope and requirements, are clearly laid down, at the start of the development process. This type of model is best suited for large size projects as it helps to minimize the overall risk and lets the project adapt to changes quickly.
see also

5. Basic stages of a software project
Topic 2: Mobile app development methodologies
Basic stages of a software project
Two different methodologies
Waterfall
Agile
An example methodology
A suggested methodology
Different companies will use different methodologies, sometimes having elements of both waterfall and agile approaches.

6. Basic stages of a software project
Topic 2: Mobile app development methodologies
EXAMPLE METHODOLOGY
Basic stages of a software project
Two different methodologies
Waterfall
Agile
An example methodology
A suggested methodology

7. Basic stages of a software project
Topic 2: Mobile app development methodologies
EXAMPLE METHODOLOGY
Basic stages of a software project
Two different methodologies
Waterfall
Agile
An example methodology
A suggested methodology
VIEW the full .pdf document

8. Basic stages of a software project
Topic 2: Mobile app development methodologies
Basic stages of a software project
Two different methodologies
Waterfall
Agile
An example methodology
A suggested methodology
ANALYSIS
DESIGN
DEVELOP
INTEGRATE
EVALUATE
Analyse – establish requirements
Design – screen flows, prototype
Develop
Integrate – data sources
Evaluate and continue to support.
A cyclic approach to app development is critical to success for many reasons not just changing the OS but also the changing needs of the user, changes based on user feedback. Application development in many ways is a dynamic never-ending process ----perpetual beta???

9. Interactive Applications Design and Development
Topic 2: Mobile application development methodologies
Basic stages of a software project
Two different approaches
Waterfall
Agile
An example methodology
A suggested methodology
By the end of this lecture you should be able to:
Understand what is meant by a project methodology
Be able to distinguish between waterfall and agile approaches
Identify a methodology suited to mobile app development