delphi-xe5

How can I make my Android app react to the back-button? Is there something as high-level VCL's TApplicationEvents to handle it, or do I need to dive deep into low-level Android-specific stuff here? Right now, most of the demo applications have an on-screen back button to go back to a previous screen. Pressing the psysical button always seems to quit the app, and in some situations it results in an access violation. In the form's OnKey... events, the Key parameter is vkHardwareBack on Android. For example: uses FMX.Platform, FMX.VirtualKeyboard; procedure TForm1.FormKeyUp(Sender: TObject; var

I'd like to keep device on and avoid unloading my application from memory even while there is no user activity. Something like service. I made module like How to check if network is available on Android and iOS ( Delphi XE5 ) but system crushes when I run SetWakeLock: unit Android.PowerManager; interface function SetWakeLock : boolean; procedure ReleaseWakeLock; implementation uses System.SysUtils, Androidapi.JNI, Androidapi.JNIBridge, Androidapi.JNI.GraphicsContentViewText, Androidapi.JNI.JavaTypes, FMX.Helpers.Android; type JPowerManager = interface; JWakeLock = interface; JWakeLockClass =

AFAIK there's no built-in function for that. Searching the web I found this function and it works for me, but I prefer not to use it since it's assembly and I can't understand what it is doing. So I wrote this function that also works: function Cardinality(const PSet: PByteArray; const SizeOfSet(*in bytes*): Integer): Integer; const Masks: array[0..7] of Byte = (1, 2, 4, 8, 16, 32, 64, 128); var I, J: Integer; begin Result := 0; for I := 0 to SizeOfSet - 1 do for J := 0 to 7 do if (PSet^[I] and Masks[J]) > 0 then Inc(Result); end; Now, I want to know if I can rely on this function? Or maybe

This question already has an answer here: Create a customized Item Appearance for ListView Delphi XE7 1 answer Believe me I did my homework before reaching out for help. I spent last 3 days searching and reading but I couldn't come to a solution. So any help will be highly appreciated. My task is to have a ListView connected to a Dataset where the ListView Item is of the following structure: Bear in mind that Elements 4, 6, & 8 are of fixed values & Color (i.e. labels) Colors of Elements 1 & 10 depends on values of Elements 5, 7, & 9 Best what I got is references to Delphi Standard Example

Is there a way to make the TListView of Delphi to behave like actual ListView in android? for example each item of the list has its own "View" and in that view can be multiple other views(components) like multiple text boxes and check boxes and ...? Yes there is a way. I make it by using these two methods. The CreateItem method is where you put the components you want in the listitem. procedure TForm1.CreateItem; var edit1:TClearingEdit; editCalendar1:TCustomCalendarEdit; begin edit1:= TClearingEdit.Create(Self); edit1.Parent := fItem; edit1.Align := TAlignLayout.alClient; edit1.Text :=

How to get the version of an Android application using the Delphi XE5? I need the "versionName" information. You can use the getPackageInfo method of the JPackageManager class to get information about you package, from here access the versionName property to get the versionName . Try this sample uses Androidapi.JNI.JavaTypes, FMX.Helpers.Android, Androidapi.JNI.GraphicsContentViewText; {$R *.fmx} procedure TForm25.Button1Click(Sender: TObject); var PackageManager: JPackageManager; PackageInfo : JPackageInfo; begin PackageManager := SharedActivity.getPackageManager; PackageInfo :=