Jump to content

Search the Community

Showing results for tags 'android'.

More search options

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Content Type


  • Delphi Questions and Answers
    • Algorithms, Data Structures and Class Design
    • VCL
    • FMX
    • RTL and Delphi Object Pascal
    • Databases
    • Network, Cloud and Web
    • Windows API
    • Cross-platform
    • Delphi IDE and APIs
    • General Help
    • Delphi Third-Party
  • C++Builder Questions and Answers
    • General Help
  • General Discussions
    • Embarcadero Lounge
    • Tips / Blogs / Tutorials / Videos
    • Job Opportunities / Coder for Hire
    • I made this
  • Software Development
    • Project Planning and -Management
    • Software Testing and Quality Assurance
  • Community
    • Community Management

Find results in...

Find results that contain...

Date Created

  • Start


Last Updated

  • Start


Filter by number of...


  • Start




Found 63 results

  1. It is a small bug but it annoys us every day: https://quality.embarcadero.com/browse/RSP-25667?jql=text ~ "versioncode" Please vote for it so it gets solved!
  2. Delphi 10.4.2 Have developed a custom app for use on Android tablet for a business. There will be approx 10 users of this app. The plan is to notify users of any update through Google Drive allowing the user to receive a link and update there tablet with latest version of the app. Especially in the early stages this may mean an updated database file (SQLite) in which case -cleaninstall is used. On testing this, if I copy .apk file direct to tablet's download directory and then navigate to that directory and double click to install......all works and db file is replaced. When testing this using Goole drive (same apk file) the app is updated but the db file is not replaced. Should I be doing something else other than '-cleaninstall' Any advice would be appreciated. Bill Zwirs
  3. This issue shows up when writing a Characteristic from the Andorid app to the BT device. Here is the sequence using these TBluetoothGattCharactertistics methods SetValueAsUint32, then 4 bytes are transmitted. SetValueAsUint64, then 8 bytes are transmitted SetValueAsUint32, then 8 bytes are transmitted, the first four bytes contain the new 32 bits and the remaining 4 bytes contain the previous 64 bit value ************************************************************************************************************* In System.Bluetooth we find this method @line 2717(10.4.2), which all of the above methods call procedure TBluetoothGattCharacteristic.SetValueAs<T>(AValue: T; Offset: Integer); var LBytes: TBytes; begin LBytes := Value; if (Length(LBytes) < Offset + SizeOf(AValue)) then SetLength(LBytes, Offset + SizeOf(AValue)); Move(AValue, LBytes[Offset], SizeOf(AValue)); SetValue(LBytes); end; LBytes is always the last value sent (64 bits or 8bytes in the above example). As long as offset is zero (0), following a 64bit value with a 32bit or less value, will always result in SetLength not being called. And as long as offset is zero, this procedure can never reduce the size of LBytes, it can only increase the size of LBytes. ***************************************************************************************************************** my work around was to create a method in my BT wrapper that creates a variable ClrValue of type TBytes set length to 1 call the method SetValue(ClrValue) This resets the TBluetoothGattCharactertistics property Value to be length 1 and thus the SetLength in the above code will always be called and the correct number of bytes will be transmitted. ***************************************************************************************************************** I went back and checked 10.1 Update2 and the same code as above is there. This may be expected behavior, I dont know, Other than my little work around, I found no intrinsic way to change the array length and thus the bytes transmitted. If you call SetValueAsUint32, I would expect 4 bytes to be transmitted, regardless of what was transmitted before.
  4. My app pop up "Access violation at address 000000001BB022128, accessing address 000030312E353820" error in iPhone. Android works perfectly without this error. This error pops up when 1. Run the app 2. Press the home button (my app still running in background) 3. Run other apps 4. Go back to my app 5. Error popup. It is quite strange that my development device iPhone 6S never shows this error. All my other testing devices, from iPhone 7 ~ iPhone X, pop this error! This error exists since XCode 11. I updated it to XCode 12.4 hope that this error can be solved, but no luck! My development environment is 1. Delphi 10.4.1 2. iOS 13.7 3. XCode 12.4 4. macOS Big Sur 5. My app uses a location sensor component and timer components to activate the location sensor when loading up the App. (I want to try it in iOS 14.4 but cannot successfully get the iOS 14 SDK add to the SDK manager. Files in Z:\Documents\Embarcadero\Studio\SDKs\iPhoneOS14.4.sdk\usr\lib are in 0 byte. I tried it from XCode 12.0 to 12.3. All failed. I think it should be a bug in Delphi IDE. Only my old iOS 13.7 SDK is still working.) Does anyone know what causes this access violation error? Please help! BR. Leo
  5. Turan Can

    full screen view capture

    Hello everyone, Full screenshot. How do I capture the entire screen? In this example, I can take a screenshot of the open form. Sample; function MakeScaleScreenshot(Sender: TObject): TBitmap; var fScreenScale: Single; function GetScreenScale: Single; var ScreenService: IFMXScreenService; begin Result := 1; if TPlatformServices.Current.SupportsPlatformService(IFMXScreenService, IInterface(ScreenService)) then begin Result := ScreenService.GetScreenScale; end; end; begin fScreenScale := GetScreenScale; Result := TBitmap.Create(Round(TfmText1(Sender).Width * fScreenScale), Round(TfmText1(Sender).Height * fScreenScale)); Result.Clear(0); if Result.Canvas.BeginScene then try TfmText1(Sender).PaintTo(Result.Canvas); // Sender.PaintTo( Result.Canvas); //, RectF(0, 0, Result.Width, Result.Height)); finally Result.Canvas.EndScene; end; end; procedure TfmText1.btnScreenClick(Sender: TObject); var B: TBitmap; begin B := MakeScaleScreenshot(Self); // MakeScreenshot(Image1); Image1.Bitmap.Assign(B); B.DisposeOf; end;
  6. Hi there, I had some time to check out the great OpenSsl library from Grijjy / @Allen@Grijjy, and I found that its working even without binding any libraries to it. The original FMX sample showed some issues, so I just created a brand new Rx10.4.1 project and moved the main unit to it. Beside the Grijjy Foundation, I've put no static linked files yet in the deployment, to check this library out step-by step. Of coarse for Win32 I need the enclosed DLL's in the EXE folder, that's no surprise. It puzzled me that for Android and iOS, as well as for Macos, I don't need to add any library at all to the library tree/deployment Even in Allens post, there is the note, I've misinterpreted that it should be added directly to the projects library tree, or by deployment manager or some other hacky means: Also Embarcadero has notes about OpenSsl, Which leads to the conclusion at least iOS would need some external download of static libraries. In the libraries const section, I can spot the different static/dynamic names, but where and do they bind to ? const {$IF Defined(WIN32)} LIB_CRYPTO = 'libcrypto-1_1.dll'; LIB_SSL = 'libssl-1_1.dll'; _PU = ''; {$ELSEIF Defined(WIN64)} LIB_CRYPTO = 'libcrypto-1_1-x64.dll'; LIB_SSL = 'libssl-1_1-x64.dll'; _PU = ''; {$ELSEIF Defined(ANDROID64)} LIB_CRYPTO = 'libcrypto-android64.a'; LIB_SSL = 'libssl-android64.a'; _PU = ''; {$ELSEIF Defined(ANDROID32)} LIB_CRYPTO = 'libcrypto-android32.a'; LIB_SSL = 'libssl-android32.a'; _PU = ''; {$ELSEIF Defined(IOS)} LIB_CRYPTO = 'libcrypto-ios.a'; LIB_SSL = 'libssl-ios.a'; _PU = ''; {$ELSEIF Defined(MACOS32)} LIB_CRYPTO = 'libssl-merged-osx32.dylib'; { We unify LibSsl and LibCrypto into a common shared library on macOS } LIB_SSL = 'libssl-merged-osx32.dylib'; _PU = '_'; {$ELSEIF Defined(MACOS64)} LIB_CRYPTO = 'libcrypto-osx64.a'; LIB_SSL = 'libssl-osx64.a'; _PU = ''; {$ELSEIF Defined(LINUX)} LIB_CRYPTO = 'libcrypto.so'; LIB_SSL = 'libssl.so'; _PU = ''; {$ELSE} {$MESSAGE Error 'Unsupported platform'} {$ENDIF} I've put my test code as a wrapper around the original code, basically just adding the new project files. It seems the magic happens, because the libraries were sitting all side-by-side to the calling unit. The OpenSSL_Api unit find these local files in the same folder, and is able to bind them correctly. I didn't know that this is possible, I thought they have to be in the same project folder, and at least cross-platform make another hazzle to bind depending on the OS. Good to know that its enough to provide library+unit together, that gives much more room to cleanup libraries. I've put my wrapper code enclosed for testing, while the originally library files from Grijjy should be placed in the Src folder. The missing files you can get from here. I hope Allen don't mind. T381_GrijjySsl.zip
  7. toufik

    The location of sqllite database ?

    good morning every one ^^ how is every one doing )) 1- i have fmx android app that s create sqllite db on create ,what's the location of db on the phone and is it const location ? (does not change for every other phones) 2- what's the proper way to copy it from that location to sd card (backup) ? thanks and take care
  8. TurboMagic

    Android JInputStream wrapper?

    Hello, since Android 10 we've got this nasty problem of no longer having direct file access to such folders like TPath.GetSharedDownloadsDir. Now I have managed via some intent call to either ACTION_OPEN_DOCUMENT or ACTION_GET_CONTENT to display some file chooser and when the user selects one I get the Uri of the selected file. With that I can get at an JInputStream and could read out the individual bytes of that stream. But: how to get at the file size properly to know when to stop reading? The Available method should, as per Android's documentation https://developer.android.com/reference/java/io/InputStream#available() rather not be used. Is there any "wraper" available which properly/nicely wrapt this in a TFileStream or something similar? A quick search didn't turn up anything yet. TurboMagic
  9. I'm currently storing binary files generated by my app or uploaded to the device by the user (e.g. via Windows Explorer) in the public downloads path returned by TPath.GetSharedDownloadsPath. Using such a path which is not within the installed app itself is only possible in Android 10 when requestLegavyExternalStorage is being declared in the AndroidManifest.template.xml. But that is a solution only viable when targeting Android 10, but not when targeting Android 11, which will be a requirement somewhere in 2021. Now I'm looking for possible alternatives which come as close to what I currently have as possible. I have written a dialog listing all the files of my file type and when the user taps one he gets options to open it, display file meta data in a popup or share it via share sheet. I'm a bit lost about which route to go. I don't think MediaFramework would be the right approach as my file type is no media file. I've seen this one: https://developer.android.com/training/data-storage/use-cases#handle-non-media-files startActivityForResult( Intent(Intent.ACTION_OPEN_DOCUMENT).apply { addCategory(Intent.CATEGORY_OPENABLE) type = "*/*" putExtra(Intent.EXTRA_MIME_TYPES, arrayOf( "application/pdf", // .pdf "application/vnd.oasis.opendocument.text", // .odt "text/plain" // .txt )) }, REQUEST_CODE ) But I'm not really sure what it does. Ok, it calls some activity to select a file, but since my file type is binary with some specific suffix I'd like to list only files with that suffix and the other thing is: what do I get back? How do I get at my file's contents? And the other issue is, that the same dialog s used for saving files as well. They might be saved in some app package specific directory if share sheet can work for that, but it still would be more cumbersome for users having the device directly connected via Windows Explorer. They most likely couldn't get at the file anymore. Any ideas?
  10. my sample based on tip by Fernando Rizzato (MVP Embarcadero lead South America) unit uFormMain; interface uses System.SysUtils, System.Types, System.UITypes, System.Classes, System.Variants, System.Permissions, FMX.Types, FMX.Controls, FMX.Forms, FMX.Graphics, FMX.Dialogs, FMX.Layouts, FMX.Controls.Presentation, FMX.StdCtrls, FMX.ListBox, FMX.Objects, FMX.ScrollBox, FMX.Memo, FMX.Media; type TfrmFormMain = class(TForm) lytFormMain: TLayout; lytFormMainToolBar: TLayout; lytFormMainClientArea: TLayout; tbarFormMainMenu: TToolBar; sbtnCAMStartCamera: TSpeedButton; cmbboxCAMDevices: TComboBox; imgVideoCapture: TImage; mmMyLog: TMemo; sbtnCAMStopCamera: TSpeedButton; procedure FormCreate(Sender: TObject); procedure sbtnCAMStartCameraClick(Sender: TObject); procedure FormClose(Sender: TObject; var Action: TCloseAction); procedure imgVideoCaptureTap(Sender: TObject; const Point: TPointF); procedure sbtnCAMStopCameraClick(Sender: TObject); procedure cmbboxCAMDevicesChange(Sender: TObject); procedure FormResize(Sender: TObject); procedure FormActivate(Sender: TObject); private procedure prcMyLog(lText: string); // procedure prcCAMDevicesSetting; procedure prcCAMStartCapture; // {$IF DEFINED(ANDROID)} procedure prcPermissionsResulted(Sender: TObject; const APermissions: TArray<string>; const AGrantResults: TArray<TPermissionStatus>); procedure prcDisplayRationale(Sender: TObject; const APermissions: TArray<string>; const APostRationaleProc: TProc); {$ENDIF} // procedure prcCAMSampleBufferReady(Sender: TObject; const ATime: TMediaTime); procedure prcCAMSampleBufferSync; public end; var frmFormMain : TfrmFormMain; FFormTopPositionBeforeResize: integer = 0; implementation {$R *.fmx} { This sample, will use the "TVideoCaptureDevice" (class base to "TCameraComponent") directly!!! This class is defined in "FMX.Media.pas" // TDialogService.ShowMessage() used for dont block main-thread! } // uses FMX.DialogService {$IF DEFINED(ANDROID)} , FMX.Helpers.Android, Androidapi.JNI.JavaTypes, Androidapi.Helpers, Androidapi.JNI.OS {$ENDIF} ; // var lMyCAMDevice : TVideoCaptureDevice; lMyCAMPermission: string; function fncMyIIF(lBooleanExpr: boolean; lTextTrue, lTextFalse: string): string; begin result := lTextFalse; // if lBooleanExpr then result := lTextTrue; end; procedure TfrmFormMain.prcMyLog(lText: string); begin mmMyLog.Lines.Add(lText); end; procedure TfrmFormMain.cmbboxCAMDevicesChange(Sender: TObject); begin {$IF NOT DEFINED(ANDROID)} try lMyCAMDevice := nil; // lMyCAMDevice := TVideoCaptureDevice(TCaptureDeviceManager.Current.GetDevicesByName(cmbboxCAMDevices.Selected.Text)); // sbtnCAMStartCamera.Enabled := not(lMyCAMDevice = nil); // except on E: Exception do prcMyLog('Error Start CAM' + #13#10 + E.Message); end; {$ENDIF} end; procedure TfrmFormMain.FormActivate(Sender: TObject); begin {$IF NOT DEFINED(ANDROID)} FFormTopPositionBeforeResize := Self.Top; { when the user move the forms, needs change it too! } {$ENDIF} end; procedure TfrmFormMain.FormClose(Sender: TObject; var Action: TCloseAction); begin if not(lMyCAMDevice = nil) then begin {$IF DEFINED(ANDROID)} // if PermissionsService.IsEveryPermissionGranted([lMyCAMPermission]) then; if PermissionsService.IsPermissionGranted(lMyCAMPermission) then {$ENDIF} begin if (lMyCAMDevice.State = TCaptureDeviceState.Capturing) then lMyCAMDevice.StopCapture; end; // // lMyCAMDevice.Free; // if necessary!!! end; end; procedure TfrmFormMain.FormCreate(Sender: TObject); begin {$IF NOT DEFINED(ANDROID)} FFormTopPositionBeforeResize := Self.Top; {$ENDIF} // // // Form.OnCreate is not better place to "critial" procedure! // Here, only basic procedures! // Self.Position := TFormPosition.ScreenCenter; sbtnCAMStopCamera.Text := 'Stop Cam'; // prcCAMDevicesSetting; // if necessary, move it for another place! // if not(lMyCAMDevice = nil) then begin prcMyLog(lMyCAMDevice.ToString); // unfortunatelly, dont have Name or Description on Mobile Android // sbtnCAMStartCamera.Enabled := True; end else prcMyLog('MyCAMDevice = nil'); end; procedure TfrmFormMain.FormResize(Sender: TObject); begin {$IF NOT DEFINED(ANDROID)} if (Self.Height <= 480) then begin Self.Top := FFormTopPositionBeforeResize; Self.Height := 480; end; // if (Self.Width <= 640) then Self.Width := 640; // to avoid that ComboBox is gone...! {$ENDIF} end; procedure TfrmFormMain.imgVideoCaptureTap(Sender: TObject; const Point: TPointF); {$IF DEFINED(ANDROID)} var lObject: string; {$ENDIF} begin {$IF DEFINED(ANDROID)} // for "TAPing" tests! // lObject := ''; // if not(Sender = nil) then lObject := Sender.ClassName; // TDialogService.ShowMessage( { } Format('Object=%s, Point X=%f, Y=%f, V[0]=%f, V[1]=%f, IsZero=%s', [ { } lObject, Point.X, Point.Y, Point.V[0], Point.V[1], { } fncMyIIF(Point.IsZero, 'is zero', 'is not zero') { } ])); {$ENDIF} end; procedure TfrmFormMain.prcCAMDevicesSetting; {$IF NOT DEFINED(ANDROID)} var DeviceList: TCaptureDeviceList; i : integer; {$ENDIF} begin {$IF DEFINED(ANDROID)} cmbboxCAMDevices.Visible := False; try // Normally, there is only 1 cam in Mobile! // // NOTE: any try to read or change any property from CAM, NEEDS "permissions"!!! lMyCAMDevice := TCaptureDeviceManager.Current.DefaultVideoCaptureDevice; // lMyCAMDevice.OnSampleBufferReady := prcCAMSampleBufferReady; // showing our video on TImage // // DONT TRY READ or CHANGE any property from CAMDevice here!!! // Like: Start or Stop, Quality, IsDefault, etc... // Only later your "permissions" to be given by user!!! except on E: Exception do prcMyLog('Error CAM definition' + #13#10 + E.Message); end; {$ELSE} DeviceList := TCaptureDeviceManager.Current.GetDevicesByMediaType(TMediaType.Video); // for i := 0 to (DeviceList.Count - 1) do cmbboxCAMDevices.Items.Add(DeviceList[i].Name); {$ENDIF} end; {$IF DEFINED(ANDROID)} // DisplayRationale and PermissionsResulted is used only mobile! procedure TfrmFormMain.prcDisplayRationale(Sender: TObject; const APermissions: TArray<string>; const APostRationaleProc: TProc); var lRationaleMsg: string; i : integer; begin for i := 0 to high(APermissions) do begin if APermissions[i] = lMyCAMPermission then lRationaleMsg := lRationaleMsg + 'This app needs access your CAM to works' + SLineBreak + SLineBreak; end; // // Show an explanation to the user *asynchronously* - don't block this thread waiting for the user's response! // After the user sees the explanation, invoke the post-rationale routine to request the permissions // TDialogService.ShowMessage(lRationaleMsg, procedure(const AResult: TModalResult) begin // TProc is defined in System.SysUtils // APostRationaleProc; // used by System to go-back in before function... end) end; procedure TfrmFormMain.prcPermissionsResulted(Sender: TObject; const APermissions: TArray<string>; const AGrantResults: TArray<TPermissionStatus>); begin // verifying if the permissions was granted! - Here, testing only 1 permission = CAM if (Length(AGrantResults) = 1) and (AGrantResults[0] = TPermissionStatus.Granted) then prcCAMStartCapture { execute your procedure here if all it's ok } else TDialogService.ShowMessage('The permission <<CAMERA access>> not allowed by user'); end; {$ENDIF} procedure TfrmFormMain.prcCAMSampleBufferReady(Sender: TObject; const ATime: TMediaTime); begin // ****** // DONT USE "main thread" to process something "critial" like: process images by Cam // or anyother that can "crash" your UI (user interface) or app!!! // *************************************************************** // If exist images to process, then, put it on a "queue" to execute it! // Here, "prcSampleBufferSync" will be called always in a queue from main thread (your app) // to "dont paralize it" while the images it's processed!!! // // .............."main thread".........."method called" // TThread.Queue(TThread.CurrentThread, prcCAMSampleBufferSync); // end; procedure TfrmFormMain.prcCAMSampleBufferSync; begin // // use your imagination, to redirect this buffer !!! :) // // in the meantime ... let's write the pictures coming from the camera in the TImage lMyCAMDevice.SampleBufferToBitmap(imgVideoCapture.Bitmap, True); // end; procedure TfrmFormMain.prcCAMStartCapture; begin if not(lMyCAMDevice = nil) then begin // to Mobile (Android), change properties from CAMERA, needs permission! {$IF DEFINED(ANDROID)} if PermissionsService.IsPermissionGranted(lMyCAMPermission) then {$ENDIF} begin try lMyCAMDevice.StopCapture; // to avoid any error below // lMyCAMDevice.Quality := TVideoCaptureQuality.PhotoQuality; // lMyCAMDevice.StartCapture; // starting video capture! // prcMyLog('CAM device = Capture stated!'); prcMyLog('CAM ' + fncMyIIF(lMyCAMDevice.IsDefault, 'is', 'is not') + ' Default'); prcMyLog('CAM ' + fncMyIIF(lMyCAMDevice.HasFlash, 'has', 'has not') + ' Flash'); except on E: Exception do prcMyLog('Error Start CAM' + #13#10 + E.Message); end; end {$IF DEFINED(ANDROID)} else TDialogService.ShowMessage('Then CAM device needs your permission to access it!'); {$ENDIF} end else TDialogService.ShowMessage('None CAM device defined!'); end; procedure TfrmFormMain.sbtnCAMStopCameraClick(Sender: TObject); begin if not(lMyCAMDevice = nil) then begin // Needs "permissions" to read or change CAM properties! // {$IF DEFINED(ANDROID)} if PermissionsService.IsPermissionGranted(lMyCAMPermission) then {$ENDIF} begin if (lMyCAMDevice.State = TCaptureDeviceState.Capturing) then lMyCAMDevice.StopCapture else lMyCAMDevice.StartCapture; end {$IF DEFINED(ANDROID)} else TDialogService.ShowMessage('The <<CAMERA access>> permission is necessary'); {$ENDIF} end; end; procedure TfrmFormMain.sbtnCAMStartCameraClick(Sender: TObject); begin {$IF DEFINED(ANDROID)} PermissionsService.RequestPermissions( { } [lMyCAMPermission], { } prcPermissionsResulted, { } prcDisplayRationale { = nil, if you DONT WANT show any message! } ); {$ELSE} prcCAMStartCapture; // MSWindows or macOS {$ENDIF} end; initialization lMyCAMDevice := nil; {$IF DEFINED(ANDROID)} lMyCAMPermission := JStringToString(TJManifest_permission.JavaClass.CAMERA); {$ENDIF} finalization end. hug
  11. Latest Delphi Trying to send email from Android that is always sent to one address but can have up to 3 CC addresses......the send to address shows up ok in the email but not any of the CC addresses. The code I use is shown below. Intent := TJIntent.JavaClass.init(TJIntent.JavaClass.ACTION_SEND); sRecipients := TJavaObjectArray<JString>.Create(1); sRecipients.Items[0] := StringToJString(Recipient); ccRecipient := TJavaObjectArray<JString>.Create(1); ccRecipient.Items[0] := StringToJString(ccTechs); Intent.putExtra(TJIntent.JavaClass.EXTRA_EMAIL,sRecipients); Intent.putExtra(TJIntent.JavaClass.EXTRA_CC, ccRecipient); Intent.putExtra(TJIntent.JavaClass.EXTRA_SUBJECT, StringToJString(aSubject)); Intent.putExtra(TJIntent.JavaClass.EXTRA_TEXT, StringToJString(aBody)); Intent.setType(StringToJString('plain/text')); TAndroidHelper.Activity.startActivity(TJIntent.JavaClass.createChooser(Intent, StrToJCharSequence('Which email app?'))); The ccTechs variable is a string of addresses - each address separated by a comma. All works fine except the ccRecipient is always missing. Can someone please explain what I am doing wrong. Thanks in advance Bill Zwirs
  12. Alex Joseph

    Fetch server IP in android client app

    I have firedac datasnap server connected to mssql database server. I am using dbx connection from my firemonkey client app that is running on android mobile. Since I have different datasnap servers using the same App, how is it possible to acquire the IP address of the datasnap server with a parameter from client side. Can someone help me on this issue.
  13. lefjucabro

    Application is freezing after updating

    Hello, I started to develop an Android application with Delphi Tokyo, the application works on any devices. Then I developed the update with Delphi Rio and I have some issues when updating the application on some devices: the application freezes when opening. I had to remove application, delete files, restart the device and reinstall the application. On a new device or a device that has never had the application, I didn't have any problem. Due to lack of time, I could not solve this problem. Now I'm developing a new update on Delphi Sydney, the problem is still there and it's gotten worse: all of updated devices don't work. On a new device or a device that has never had the application, I don't have any problem again. It's a weird thing and I don't have any clue... Regards
  14. StephanWeber

    Photo app for Android and iPhone

    Hi, I made some apps with RAD Studio XE8 which run fine under Android and Windows. I have no commercial interests. But now I got an iphone SE 2020. Can anybody compile the apps for this? Looks more difficult. I can deliver the full sources, and the one doing this can use it freely and earn money. Have also a nice bow shooting app (Win and Android). And also many electrical engineering apps (Windows only). Note: Attached picture is German, but we can make it of course also in English. Bye Stephan
  15. Hi, Trying to set up a customized view for Samsung Tab S7 which has an 11" screen. I have been using the view for Android 10" and that works perfectly with the Samsung Tab S6 Lite but the customer now wants to use the Tab S7 and that places some of the buttons, nav bars in different positions on the S7 screen. The manufacture specs for the S7 state resolution 1600X2560 pixels, 16:10 ratio, ~274 PPI. Trying to followed the tutorial in the help file on Adding a Customized View to the View Selector but not sure where to get further information required such as MinPhysicalSize, MinLogicalSize and MaxLogicalSize as I am assuming the spec pixel size (1600 X 2560) is the MaxPhysicalSize. Also don't understand where to get the 'Artwork' for this device. Has anybody managed to setup a customized view for this device that could help me with the required figures or am I going in the wrong direction. Any help would be appreciated. Bill Zwirs
  16. Hello, I have my HTTPS proxy for my HTTP REST server. Both running on my development computer. I setup HTTPS proxy following instructions here: https://twigstechtips.blogspot.com/2016/01/nginx-how-to-set-up-ssl-reverse-proxy.html These instructions makes you generate two certificate files. KEY and PEM files. I added that PEM file in my project resources as resource type RCDATA and used identifier "my_ca". I used below link to prepare my security config xml https://stackoverflow.com/questions/56301765/self-signed-certificate-in-android-application-of-rad Using "@raw/my_ca" as in that stackoverflow question is failing with below error (while packaging the app) when I try to debug run the app. network_security_config.xml:6: error: Error: No resource found that matches the given name (at 'src' with value '@raw/my_ca/') So, I prepared my XML file as following: <?xml version="1.0" encoding="utf-8"?> <network-security-config> <domain-config> <domain includeSubdomains="true">yourdomain.com</domain> <trust-anchors> <certificates src="my_ca"/> </trust-anchors> </domain-config> </network-security-config> When I try to access my REST server like I get following error Failed to parse XML configuration from network_security_config On the other hand, I can get results just fine using identical URL and Postman on Windows OS. I simply failed to figure how to add that self signed certificate in my app package and use it. Any help is appreciated. Thanks & Regards, Ertan
  17. Alexandre Pires

    How to read a table every x time.

    Hi Guys, I need my Android background service to read a table from my database every 30 seconds. What would be the best way to do this? I am currently using an infinite loop in a thread and sleep, but I believe it is not the best approach. @Dave Nottage Is there any kastri component that helps to do this? I am using Delphi 10.3 Thanks for some help Alexandre
  18. Hi, I discovered on my test smartphone (samsung) that I can change the display mode of the virtual keyboard: Put it in a "floating keyboard" mode. This solves the problem since you can move the keyboard so that it no longer covers the input field. 3 questions arise: 1. Does this possibility exist on all Android smartphones and/or on all versions of the Android OS? 2. Question 1 for iOS smartphones 3. Is it possible to force this "floating keypad" mode via programming? Thank you for your feedback
  19. Hello everyone, I am having trouble showing a secondary form from the main form OnShow event for (only) the Android platform. The Show call does nothing at all except for a short delay. The main form stays active and functions correctly. The program runs nicely on Windows. This second form is StayOnTop and position=Designed with the same size as the main form. Thanks in advance for any help I can get. procedure TMainForm.FormShow(Sender: TObject); begin SetScreensLang; if MustSignIn then begin TabControl1.ActiveTab := PersonalTabItem; SignForm.Show; end else begin CheckAlerts; TabControl1.ActiveTab := AlertsTabItem; AlertsTabItemClick(nil); end; end;
  20. Hi there, I want to use the TRestClient components mainly under mobile platforms (iOS, Android), and I want to enhance and ensure the security concept for a new app. So far that means I need to verify the certifications under all conditions, same like browsers do. Since I have seen issues with apps which doesn't check certificates properly, but since Rx10.2.2 there should be all the events in place now. The client throws an event OnValidateCertificate, which could be used to verify a certificate, I think that is the right one, not really the OnNeedCertificate event, as noted in the blog from Marco above. This event returns certain infos in the TCertificate object, which are helpful to identify and verify the certificates: TCertificate = record CertName: string; SerialNum: string; Expiry: TDateTime; Start: TDateTime; Subject: string; Issuer: string; ProtocolName: string; AlgSignature: string; AlgEncryption: string; KeySize: Integer; function IsEmpty: Boolean; end; Unfortunately there is no real simple way to check the certificate status provided, e.g. from a test-site like BadSsl.com. It seems that this can be achieved only by heavy OpenSSL and touching the OCSP protocol, maybe then the app can be able to check the full status correctly and completely. While on the other side the native browsers can do this easily, as a side-effect more or less. From my understanding of the System.Net libraries, their basic idea is to use the underlying OS SSL systems, which works well for the HTTPS connection part. But I cannot really find any simple way to make use of the underlying OS for checking certifications, even if everything for checking certificates, like OpenSSL, should be in place in the OS. So I think about using the browsers of the OS, which have such support integrated, and should be perfect candidate to check the status (Safari, Chrome). But there is also no easy way to get data from the browsers from an app either, or is there any documented way I haven't seen yet ? Moreover, even if there would be a way to get that data: Would the access to the system browser be considered as "safe", from a high security standpoint ? There could be still a man-in-the-middle attack taken place, although the risk is IMHO quite low. Is there any simple Delphi/FMX "certification checker" out there which I haven't seen yet, or do I have to re-invent the wheel ? Maybe some security experts have tips to flatten the way, to reach a high security certification of the apps.
  21. Hi there, I'm sure most of you were aware of @Dave Nottage and his very helpful (live-saving) Kastri(Free) projects. Now with the presentation of the Memorizer, there are certain discussions about issues in the cross-platform world. Same as Dave I try to postpone permission requests to the bitter end, just before touching the hardware. For camera, sensors, etc. thats usually no issue. The problems may start when using local notifications, or related permissions, like Bluetooth and location. The local notifications permissions are fired right at startup, and thats annoying. You can imagine if you need a few permissions at startup, then they all will appear, and the user has to click them away before showing any useful screen. But for local notifications permission this might be maybe the right way too, because in mobile you also can run in foreground or background. So I would like to discuss the possibilities and pros and cons we have, for the permission settings from a users point-of-view. 1. Ask permission right after startup (as is now) - this is annoying to the user, especially if several requests appear one after the other - works in all cases, also for background mode, as it forces the user to decide - its a little like the old "Android way", permit all before use anything, but Androids style has changed meanwhile (for good reasons) - sometimes the app runs in background, and has no other chance to notify, than by local notification So the local notification permission shall be given at startup, to ensure this works. 2. Ask permission short before usage (in foreground) - thats what I like too, users shall decide each function before they use it. - but when moving to background w/o giving permission before, this might fail. A user cannot give permission while in background mode, the function simply fail or crash. 3. Ask permission short before going to background - this is not possible, because the app cannot do much when changing the states, especially no long-lasting alerts. 4. Allow permission in a special setup dialog - This is the "windows" setup philosophy, I think very much out of fashion in mobile: Force the user to visit setup first. - This will solve the issue in 2.), but I really try to to avoid this forcing of "setup" style design. Are there any other ideas or use-cases ? So far I think 1.) (as is) has its need too, and its not easy to cover all use-cases with one solution in mobile, there are too many options. Beside that, Android and iOS might have different philosophies as well, howto get them all under one umbrella ?
  22. Hi, After updating to delphi 10.4 and SDK 29 the camera and gallery do not work on Android 10 Also delphi examples don't work. After taking a photo from the camera the app doesn't return anything while the gallery, after choosing the photo, raises this execption First chance exception at $ 00000074D87D473C. Exception class EBitmapLoadingFailed with message 'Loading bitmap failed (/data/user/0/com.embarcadero.CameraRoll/cache/IMG_20200911_1728082355078942815963051.jpg).'. Process CameraRoll.apk (11714) any ideas?
  23. Hi, I try to run the following code on Android (10.4 Sydney) fn:=TPath.Combine(TPath.GetSharedDocumentsPath(),'OLA'); TDirectory.CreateDirectory(fn); // or ForceDirectories(fn) -> I tried both functions if TDirectory.Exists(fn,false) then showmessage('Ok') else showmessage('Failed'); And the code fail. The same code works without any problem with 10.3.3 (using the same phone) Note: On both environments I have used default User Permissions. including "Write external storage" Did you encountered this problem? - how did you solved? Thank you in advance, Pavel
  24. Hi there, I'm looking for a scripting engine in my projects, and since I had last time contact with scripting this is some years ago. I would like to check out the pros and cons of the solutions, to find the best fitting match for me. Since paxCompiler seems gone by Apex, this is maybe out of sight now, but I'm not so sure about that. DwScript is not available on mobile, as far as I know. DwScript is somewhat available in different forks (so it seems), not sure which one is the right one to choose. Maybe the list of engines is nit final, please let me know if there is something missing. What I'm looking for is a script engine that has the following features (I've put the most important in bold) usage for some base analysis and event control lightweight very stable well supported and documented Pascal supporting multiple languages would perfect, but not a main criteria (JS, C++, C#, Basic) Multiple platforms Win, Macos, Linux, iOS, Android is a must have supporting full language support is nice to have, but not a must (I can skip the special stuff I would say). performance (not that critical, but should be able to process dynamic protocols behaviour reasonable well ) memory footprint good, active community Free to use in commercial products I hope you can bring some light in this dark forest of possibilities, and share some experiences.
  25. Few months ago I prepared small demo application used FireDAC SQLite connection on an Android system. And it worked fine in an application built in Delphi 10.3. Then I updated Delphi to 10.4. And now I got: Project xxx.apk raised exception class ESQLiteNativeException with message ''. and after that: [FireDAC][Phys][SQLite] ERROR: no such table: items. Even table 'items' exists in the database file and I did not any changes in sources. Anyone had the same issue?