![]() The Basic Activity, on the other hand, consists of two layout files. The Empty Activity template creates a single layout file consisting of a ConstraintLayout manager instance containing a TextView object as shown in Figure 16-1: Although these seem similar at first glance, there are actually considerable differences between the two options. ![]() The most basic of these templates are the Basic Activity and Empty Activity templates. ![]() When creating a new Android Studio project, a number of different templates are available to be used as the starting point for the user interface of the main activity. ![]() As such, when working with the Android Studio Layout Editor we are invariably working on the layout for an activity. An activity is a standalone module of application functionality that usually correlates directly to a single user interface screen. As outlined in the chapter entitled “The Anatomy of an Android Application”, Android applications are made up of one or more activities. Regardless of the level of complexity, the Android Studio Layout Editor tool significantly simplifies the task of designing and implementing Android user interfaces. Invariably these interactions take place through the application’s user interface.Ī well designed and implemented user interface, an important factor in creating a successful and popular Android application, can vary from simple to extremely complex, depending on the design requirements of the individual application. Most Android devices come equipped with a touch screen and keyboard (either virtual or physical) and taps and swipes are the primary form of interaction between the user and application. It is difficult to think of an Android application concept that does not require some form of user interface. Purchase the fully updated Android Studio Chipmunk Edition of this publication in eBook ($29.99) or Print ($46.99) formatĪndroid Studio Chipmunk Essentials - Java Edition Print and eBook (PDF) editions contain 94 chapters and over 800 pages The tabs allow you to configure different rules for the selected level.įor more details on the various options, see the Layout Editor section.You are reading a sample chapter from the Android Studio 3.2 Edition of this book. Tabs for Filters, Grouping/Sorting, Period Aggregation (5) In this area, you can specify settings for the filters, grouping/sorting and period aggregation. Only available at row or column level.Įdit area for filters, grouping/sorting and period aggregation (4) If selected, the report will display dimensions with blank records in the report that is, if the checkbox is cleared, empty datasets will not be displayed. If selected, the report will list the details of dimensions and create what is known as an expanding group that is, list each account rather than grouping the accounts together and displaying a total. You can specify the settings for displaying the data in the report. NOTE: For more information about the property hierarchy, see Property hierarchy. You can select a column or row to create, edit, or delete business rules at the column or row level. Selects the entire report so that rules (parameters) can be applied to the entire Excel report.Ĭolumn/ Row Level (Column selections/Row selections) (2)
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