Conceptually this network situation isn’t any different from the scenario in which a network enabled desktop application encounters a loss of network or network congestion. Finally, every time your app starts, check whether a newer version is available and ask the user to download the same (or do an automatic update from within the app). To ensure that your mobile app continues to run on later OS versions you should follow the same conventions and checks as when you write a desktop application so as to ensure compatibility across OS versions: viz: The mobile device’s operating system and the device’s hardware that your mobile application runs on, will usually determine what audio and video capabilities your application can provide. Mobile applications need to operate successfully (or degrade gracefully) within a wide spectrum of operating conditions, such as a range of supported screen resolutions and form factors, network bandwidth situations and network types (2G, 3G, 4G, WiFi) etc. Functional And Non-Functional Requirements Najeeb Ur Rahman,Walaa Safadi,Aanal Raj Basaula,Constantin 14/04/015 1 Purpose And Scope Globally around One Percent of the human population is visually impaired from which ten Percent is fully blind. These may be speed, security, reliability, etc. Sensitivity: This is a measure of how much the sensor’s reading changes in response to changing conditions. You also need to disclose the budget and time limitations for clarity. There are lots of bells and whistles that have become standard expectations, like calling, emailing, texting, photography, voice activation and notifications. … Mobile devices are uniquely constrained in several aspects such as multi-tasking support, available network bandwidth, screen real estate etc. Prior to discussing how requirements are created, let’s differentiate their types. There is usually API support available to your application to detect whether the application is operating on a touch enabled screen. For example when Application is made to start up it shouldn’t take more than 3 second to load initial screen.Also it should be made sure that app will not hindrance to the user Input. When user selects any food it should be easy for him to add to the cart and mention the quantity of the food , also customise if available with few touches and this should happen in fewer seconds or instantaneous with user touch. Along with automatic adjustment of Font size and image rendering. Nonfunctional requirements can be classified based on the user’s need for software quality. These constraints translate into strict bounds being imposed on the operating characteristics of an application running on a mobile device. For example, which audio/video formats (such as 3GP, MP3, AAC, AAC+ etc) your application supports, whether it will support full HD video or not, whether it can support multi-channel stereo surround sound etc., are all decided by the mobile OS’s capabilities and the characteristics of the device’s hardware. If you design your app for only low resolution screens, one of two things will happen if a user runs it on a high resolution screen phone – either the high resolution phone will not apply automatic pixel doubling, in which case, your app will occupy a tiny area of the screen of the high resolution phone, or the high res phone will apply pixel doubling in which case your app’s UI might look odd in places where images and fonts are unnaturally large. This document is the foundation of a successful product, outlining business logic, listing technical specifications, and ultimately helping your development team transform your early concept into a fully functional app. If the OS supports the feature but there is no out-of-the-box support present for them in the OS’s SDK, ensure that there is strong support available via third party libraries, or be prepared to incur the often substantial cost of rolling out support by writing your own software library. Solution requirements describe the characteristics that a product must have to meet the needs of the stakeholde… Non Functional Requirements. All applications start with an idea which would have come from thinking in terms of a potential solution to an identified problem. Mobile applications sometimes need to interact with the device’s sensors such as GPS, accelerometer, the ambient light sensor, camera etc. Before Explaining what comes under NFR let me explain what Actually Non Functional requirement is:-, In order to understand NFR let’s go through the necessity of Functional requirement , Functional requirement is “the ability of the system/Software to perform the defined task and how it perform while doing defined task”. This test will tell you how quickly your application drains the battery when in ‘normal’ use, with all the foreground and background features of the application running normally. If you notice that the user is too far behind in the app version from what is the latest version available on the app store, you may want to force the user to upgrade the app before letting them use it. An unconscious requirement represents a requirement that the stakeholder desires, but for some reason they did not express or forgot to elicit, assuming that it will be taken care of as a matter of course. You can use the very powerful HPROF tool or DDMS itself to analyze heap usage and see which method calls are contributing the most to heap usage. Similarly, an application designed for a high-resolution (high Dots Per Inch – DPI) screen may have a major part of its UI go off screen on a low DPI screen phone, if the OS does not do automatic pixel filtering, leading to quite an annoying experience at best. Why so many and why the “etc, etc, etc!”? Functional requirements are about functionalities that will be implemented in the app. It is no different for a web application. Addressing a user concern will necessitate the formulation of a number of functional requirements, but the user concerns will also act to constrain other requirements that are characteristic of nonfunctional requirements. A product requirements document (PRD), fully defines the value and purpose of a mobile app to your product and development teams. Stakeholder requirements. Image changes: Background images or background art may have to be provided in two different versions: a large size/high resolution version and a small size/low resolution version so that it properly fills the amount of physical space available on the screen. For example :- All authentication token should be saved on local device for comparison and need user permission to gain access, There should be a common plane where the user can access your application to install and look for regular updates give feedback, For example :- Apples’s App Store and Googles Play Store, The above mentioned points cover only few important areas of the Non Functional Requirement Apart from this there are much more concepts to be covered and need to be taken care of Some of honours mentions are. When a phone call, SMS or some type of notification (such as a calendar notification) arrives, your mobile device will usually inform your application of this event. Challenged people make use of nonfunctional requirements types along with a brief description of each s design addresses requirement. Scalability of device screen in locked mode channels such as technical requirements or other outputs 4 usually changes over operating! 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non functional requirements examples for mobile applications

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