Minox

You probably have set the "Style" preview to "Windows", try selecting the right destination (you can find it in Design)

if you change the value to "PrinterIndex" it is called "EndDoc", so you have to select the printer before "BeginDoc"

I also encountered the same problem, I solved it by replacing the code:

Ad := '"' + DosyaAdi(Uri) + '" '

with

If RequestCode<>Dizin_Agaci_Ac
   Then Ad := '"' + DosyaAdi(Uri) + '" '
   Else Ad := TPath.GetFileName(JStringToString(uri.getPath));

in the "OnActivityResult" procedure, but it still doesn't work, even if you give consent you can't read the files. I tried with the "Download" folder and I only get the folders contained therein.

38 minutes ago, David Heffernan said:

I'm honestly not sure why this topic is still open. It's the exception mask. Something is changing it. You don't have complete control over it. Other modules that are loaded into your process can change it. It's quite messy. It's been covered ad nauseum here, Borland forums, SO, etc.

 

Run this program to demonstrate how the different exception masks influence behaviour:

 

{$APPTYPE CONSOLE}

uses
  System.SysUtils,
  System.Math;

procedure Main;
var
  x, y: Double;
  Mask: TArithmeticExceptionMask;
begin
  x := 0;
  y := 0;

  Mask := GetExceptionMask;

  SetExceptionMask(Mask + [exInvalidOp]);
  Writeln(x / y);

  SetExceptionMask(Mask - [exInvalidOp]);
  Writeln(x / y);
end;

begin
  try
    Main;
  except
    on E: Exception do
      Writeln(E.ClassName, ': ', E.Message);
  end;
  Readln;
end.

 

For your scenario, when NaN is produced, clearly invalidop is masked. When the exception is raised it is unmasked.

 

The problem is that if the division results in "NAN", no exception is raised, so at runtime the error cannot be detected.

41 minutes ago, David Heffernan said:

Whatever problem this is attempting to solve, this isn't the solution

Have you tested it? because it works for me, it won't be the best of programming, but if it works...

I had a similar problem with android, I solved it by trying to convert the result to string and then to number, so I modified your code a bit, but I can't test it with "NAN":

procedure TForm2.Button1Click(Sender: TObject);
var
  V1, V2, V3: Variant;
  I1, I2: Integer;
  S1    : String;
begin
  V1 := 0;
  V2 := 0;

  Try V3 := V1 / V2;
      Except
      V3 := -1;
  End;

  Try S1 := FloatToStr(V3);
      StrToFloat(S1);
      Except
      V3 := -1;
  End;

  If V3=-1
     Then ShowMessage('Division by zero')
     Else ShowMessage(V3);

  I1 := 0;
  I2 := 0;
  ShowMessage(FloatToStr(I1 / I2));
end;

6 hours ago, MikeZ87 said:

That actually does make it A LOT easier. Thanks!

 

I was going to ask you - after playing with this a little bit, I notice that the main text (ie: the text of the itemindex item) is BIG (like the style,) but the drop-down text is still tiny. How can I change the font size of the drop down text?

 

Thanks again A MILLION!!!

 

- Mike

Have you tried changing the "Scale" property? in some cases it may be fine

If your intention is to open the explorer automatically in a specific location, I don't think it's possible to do it with the system one. Third-party ones do it instead, but I've never faced the problem. This session could be a good start to understand if there is a possibility to do it.

I use this:

uses Androidapi.JNI.GraphicsContentViewText,
     Androidapi.Helpers,
     System.Messaging,
     Androidapi.JNI.Net,
     Androidapi.JNI.App,

PROCEDURE TForm1.GetFileBrowser;
      VAR Intent  : JIntent;
          ReqCode : Integer;
    BEGIN
          ReqCode := 1000;

          Intent := TJIntent.Create;

          Intent.setType(StringToJString('*/*'));
          Intent.setAction(TJIntent.JavaClass.ACTION_GET_CONTENT);
          Intent.putExtra(TJIntent.JavaClass.EXTRA_ALLOW_MULTIPLE,true);

          TMessageManager.DefaultManager.SubscribeToMessage(TMessageResultNotification,
                          procedure(const Sender   : TObject;
                                    const aMessage : TMessage)
                                VAR msgRES : TMessageResultNotification;
                              begin
                                    msgRES:= TMessageResultNotification(aMessage);

                                    If msgRES.RequestCode=ReqCode Then
                                       if (msgRES.ResultCode=TJActivity.JavaClass.RESULT_OK) Then
                                           Begin

                                           URIfileTrn := msgRES.Value.getData(); //URI sing file selez

                                           If URIfileTrn=Nil Then //multiselez
                                              ClipDataF := msgRES.Value.getClipData;

                                           End;
                              end);

          TAndroidHelper.Activity.startActivityForResult(Intent, ReqCode);
    END;

and then via thread process the URI

you're declaring the same variable 10 times, I don't think it's possible the way you mean, you could alternatively use a record type, and then call it in an array, like:
 

type
  myRec = Record
          myVar : String[20];
          End;

[...]

var
  ArrRec : Array Of myRec;

[...]

procedure Sample(const AFixedArray: TSomeFixedArray);
begin
  SetLength(ArrRec,10);

  for var I = 0 to 10 do
  begin
    ArrRec[I].myVar := 'xyz'+I.ToString;
    // do something
  end
end

If you have the rights to access the "DCIM/MyFolder" folder, you could build a simple browser (via "System.IOUtils.TDirectory.GetFiles") yourself and display the files contained in a list. Or launch an "Intent" with "ACTION_GET_CONTENT", to open the system app

Handle it like a data store? In the sense of creating a record for the first file where some fields point to the second file, so when you order the first, to read in the second file you just need to read the pointer.

Hi all, I have a code to maximize and minimize screen brightness for android app, which works fine in 32bit, but not in 64bit. Here is the code:

USES Androidapi.JNI.GraphicsContentViewText, Androidapi.Helpers;


procedure TForm1.Button1Click(Sender: TObject); //min
      VAR appParam : JWindowManager_LayoutParams;
    begin
          appParam := TAndroidHelper.Activity.getWindow.getAttributes;
          appParam.screenBrightness := TJWindowManager_LayoutParams.JavaClass.BRIGHTNESS_OVERRIDE_OFF;
          TAndroidHelper.Activity.getWindow.setAttributes(appParam);
    end;

procedure TForm1.Button2Click(Sender: TObject); //max
      VAR appParam : JWindowManager_LayoutParams;
    begin
          appParam := TAndroidHelper.Activity.getWindow.getAttributes;
          appParam.screenBrightness := TJWindowManager_LayoutParams.JavaClass.BRIGHTNESS_OVERRIDE_FULL;
          TAndroidHelper.Activity.getWindow.setAttributes(appParam);
    end;

procedure TForm1.Button3Click(Sender: TObject); //norm
      VAR appParam : JWindowManager_LayoutParams;
    begin
          appParam := TAndroidHelper.Activity.getWindow.getAttributes;
          appParam.screenBrightness := TJWindowManager_LayoutParams.JavaClass.BRIGHTNESS_OVERRIDE_NONE;
          TAndroidHelper.Activity.getWindow.setAttributes(appParam);
    end;

I don't understand why it doesn't work, do I have to ask permission for the 64bit app and manually change the brightness?

Thanks for the reply, but is it possible to place a link in an application that points to my page? Am I breaking some Google rule?

Hello everyone,
Do you know if it is possible to insert a link in your app, which points to the Google Play Store page, to view the list of your applications?

I managed to get the demo working, I didn't realize I have to add the ".jar" file in "Projects" too, thanks again

ah yes sorry, I was laughing at the demo you indicated to me, it doesn't open, I can compile it but when it starts it closes immediately, the only way to start it is to remove the code in "onCreate".
The device on which I test is a s10e with android 12, and RAD studio 11.3.

Unfortunately I can't get the app to work, when opening it it either crashes or closes immediately. However it can help me to understand what the method is

Thank you! now I study it

try like this

procedure TForm1.TrackBar1Change(Sender: TObject);
begin
  ShowValue;

  //ScaledLayout1.Scale.X := TrackBar1.Value;
  //ScaledLayout1.Scale.Y := TrackBar1.Value;

  ScaledLayout1.BeginUpdate;
  ScaledLayout1.Width := ScaledLayout1.OriginalWidth * TrackBar1.Value;
  ScaledLayout1.Height := ScaledLayout1.OriginalHeight * TrackBar1.Value;
  ScaledLayout1.EndUpdate;

  //ScaledLayout1.RecalcAbsoluteNow;
  //ScaledLayout1.RecalcSize;
end;

why do you resize the size too?

I have attached the code created so far, which once started it shows that my app does not appear in the list of those asking for permission. I found another site where they discuss this topic NotificationListenerService it looks like i have to declare a service before asking permissions, so now i will try to declare one, but i find it hard because java is too hard for me.

TestPerm.zip

From the latest versions of Android, to read the notifications the user must manually approve this choice, therefore when starting the app you have to open the notification authorization list and let him select it.
To achieve this, as far as I understand, you need to set the "android.permission.BIND_NOTIFICATION_LISTENER_SERVICE" permission in the Manifest file (I do this in the project options), as described here: NotificationListenerService, and then at runtime open the permissions page to ask the user to activate them, using this entry: Settings Here a procedure in java: notificationlistenerservice I know my approach is wrong, but i don't understand where. For example, when I asked permission for brightness in other applications, I used the same approach, and it worked.

To improve fluidity I would use a thread, so as to limit the pauses due to the execution of something else

This is because the actual size of the rectangle does not change. Try inserting the main rectangle in a Layout of the same size, and when you work with the TrackBar change the size of the Layout appropriately. Or resize the main rectangle directly, instead of acting on the "Scale" property