versehentliches Beenden einer Android App

[QuickAndDirty]

Du musst die Livecycle Events deiner App berücksichtigen!

Delphi-Quellcode:

procedure TAppForm.FormCreate(Sender: TObject);
Begin
    //Intercept LifeCycleEvents
    var aFMXApplicationEventService:IFMXApplicationEventService   
    if TPlatformServices.Current.SupportsPlatformService(IFMXApplicationEventService, IInterface(aFMXApplicationEventService) ) then
      aFMXApplicationEventService.SetApplicationEventHandler(HandleAppEvent)
    else
      Tlog.d('Application Event Service is not supported.');
end;

Und

Delphi-Quellcode:

function TAppForm.HandleAppEvent(AAppEvent: TApplicationEvent; AContext: TObject): Boolean;
begin
  case AAppEvent of
    TApplicationEvent.FinishedLaunching:  TLog.d('FinishedLaunching');       // Only Android, Probably IOS too (App has been started by the user)
    TApplicationEvent.BecameActive: TLog.d('BecameActive');                  // Both (App is in USE)
    TApplicationEvent.WillBecomeInactive: TLog.d('WillBecomeInactive');      // Only Android, Probably IOS too   (Focus is about to switch to other app)
    TApplicationEvent.EnteredBackground:                                     // Both (App is beeing executed while in the Background)
    Begin
      TLog.d('EnteredBackground');
      TAppViewModel.getinstance.EnterBackground;
    End;
    TApplicationEvent.WillBecomeForeground:                                  // Both (App is focused)
    Begin
      TLog.d('WillBecomeForeground') ;
      TAppViewModel.getinstance.EnterForeground;
    End;
    TApplicationEvent.WillTerminate:TLog.d('WillTerminate') ;                // Both (User terminted the APP)
    TApplicationEvent.LowMemory: TLog.d('LowMemory');                        // Both (Please use less memory, please! But how?)
    TApplicationEvent.TimeChange:TLog.d('TimeChange') ;                      // IOS
    TApplicationEvent.OpenURL:TLog.d('OpenURL') ;                            // IOS
  end;
  Result := True;
end;

Dadurch kannst du alle Eingaben sichern befor die App beendet wird und die Eingaben wieder laden und anzeigen wenn die App fortgesetzt wird und nichts geht verloren