By Merrifield Mew Kyle

The publication is written in a cookbook type, offering examples within the kind of recipes, permitting you to head on to your subject of curiosity, or persist with themes all through a bankruptcy to achieve in-depth wisdom. while you're new to Android program improvement and seeking out a brief commence, or when you are an skilled Android developer searching for a reference advisor, then this booklet is for you. preferably, you have to be aware of a few Java and a bit approximately mark-up languages yet this is often on no account worthy. This ebook will educate you the way to jot down wealthy Android functions from scratch very quickly.

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There are quite a few other relative properties available to views within a relative layout and the easiest way to explore these is by right-clicking a widget in the Graphical Layout and selecting Properties. See also For another example of a relative layout, see the recipe Zooming in on a MapView in Chapter 11, GPS, Locations, and Maps. 39 Layouts Applying a table layout Very often we will want to lay out our information in columns and rows and when we do, Android provides us with the TableLayout and TableRow classes.

A small pop-up appears in the initial activity that has been passed from the called one: How it works... Here, the called activity used setResult() to return a result code back to the calling activity. We used an arbitrary value in our example but a result code can be used to represent an outcome such as the index of a selected item. The corresponding member in the calling activity is the onActivityResults() method. Besides the result code that we just sent from the called activity, the method receives a request code.

Tables with as many columns and rows as we like can be built using the TableLayout and TableRow elements demonstrated here. Finer control over formatting can be achieved with the stretchColumns attribute, which causes its column to take up as much space as is available. We used the default column numbering, which begins with zero and so the second column is referred to here as 1, but there is a TableRow property layoutColumn which can be used to specifically index a column. For example:

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