4.6 Layout Analysis

4.6 Layouts and Menus
The layout of the main screen of the chosen application, had as main objective the simplicity and available on the first screen of the application the most important records for glycemic control. Another important aspect is access to functionality by the user, making it clear the purpose of each widget and does not hinder the user's choice. Thus, the main screen was developed using the TableLayout in order to put the buttons to access the logs in a grid. The size of the buttons was chosen taking into account the ability of users to be precise in choosing. Thus, each key is a set of images and text and with a size which can vary between 15mm and 20mm in height and width. The images chosen for the buttons are explanatory pictograms of the functionality of each button, making the choice easy user and practice. For the user, be editing a record and
For all records, the application automatically fills in various fields, all of which may be changed by the users. These registers are the date, time and phase of the day. This way the users only need to put some values, depending on the record to make, and eventually add notes to new entry. This automatic selection is made based on the time set for each stage of the day as well as at the time of registration. Even when the patient change the time of registration, the day's stage will be changed according to the filled time (Wass, and Paul, 2011). Figure 4.7 on the left of the picture, people can see the fields filled automatically even without any data entered by the user to the registration of a meal. After completing the current glucose in the center image and the right image the amount of carbohydrates, the application makes the calculation of insulin doses to be administered based on the glycemic carbohydrates and glycemic