Many mobile devices, especially in the consumer market, are phones or are devices that can make phone calls. In some cases, your mobile app may have the ability to make a call or just to monitor the incoming or outgoing calls.
In this recipe, we'll see how to make a call and how to monitor the current calls as well. Also, in this case, the useful FireMonkey platform services framework come handy.
Create a new mobile app by navigating to File | New | FireMonkey mobile application – Delphi.
Select the Header/Footer template and click on OK.
Drop the following components on the main form:
TEdit (
edtPhoneNumber)TButton (
btnCall)TListBox (
lbCalls)TListBox (
lbInfo)
Arrange the components as shown in the following screenshot:
The form with all the controls arranged
Put some labels to explain what the listboxes will contain, as shown in the preceding screenshot.
Now, create the
FormCreateevent handler and fill it with this code:procedure...