[SOLVED]  zxing Fail / cancel to scan ....  after using intent to pick
lazarus / 43-Android

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Guser979 · 2021-01-14 12:52

hello, I need a clarification.

 I'm trying to use Zxing app (with jintentmanager)  to scan bar
codes.  works fine.

 But right after using an intent to select an image from the gallery
or view an image ,I get the message "fail  to scan" .
 What is causing Zxing app  to fail right after using intents ( pick
or view image) ?

 I need to use  Zxing because of some features it has.



Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i
 ////////////////////////////////  My test (PICK )procedure
TAndroidModule1.jButton1Click(Sender: TObject); begin  jIntentManager1
.SetAction('android.intent.action.PICK'); jIntentManager1.SetMimeType(
'image/*');   if jIntentManager1.ResolveActivity then   
jIntentManager1.StartActivityForResult(1001, 'Select an Image
[Attachment]  ...')  else    ShowMessage('Sorry, Not find an
application that fulfills the requirement...');end;  //// Code from
demo AppIntentDemoZXing1  procedure
TAndroidModule1.jListView1ClickItem(Sender: TObject;  itemIndex:
integer; itemCaption: string);begin  if
IsRuntimePermissionGranted('android.permission.CAMERA') then  begin  
 if jIntentManager1.IsCallable('com.google.zxing.client.android.SCAN')
then     begin                 
 jIntentManager1.SetAction('com.google.zxing.client.android.SCAN');  
     case itemIndex of            0:
jIntentManager1.PutExtraString('SCAN_MODE', 'PRODUCT_MODE');   //Prod 
          1: jIntentManager1.PutExtraString('SCAN_MODE',
'QR_CODE_MODE');   //QR            2:
jIntentManager1.PutExtraString('SCAN_FORMATS',
'CODE_39,CODE_93,CODE_128,DATA_MATRIX,ITF'); //others         end;   
             jIntentManager1.StartActivityForResult(0);      //user-
defined requestCode= 0      end     else       begin        if
Self.IsWifiEnabled() then        begin          ShowMessage('Wait...
try downloading ZXing App from Google Play Store ...');         
jIntentManager1.SetAction(jIntentManager1.GetActionViewAsString());  
                 jIntentManager1.SetDataUri(jIntentManager1.ParseUri('
market://search?q=pname:'+'com.google.zxing.client.android'));       
 jIntentManager1.StartActivity();        end        else
ShowMessage('Please, enable wifi and try again....');     end;  end 
else ShowMessage('Sorry... Some Runtime Permission NOT Granted
...');end;  //// Code from demo AppIntentDemoZXing1 procedure
TAndroidModule1.AndroidModule1ActivityResult(Sender: TObject; 
requestCode: integer; resultCode: TAndroidResult; intentData:
jObject); begin  if  requestCode =  0 then  //user-defined
requestCode= 0  begin    if resultCode = RESULT_OK then  //ok   
begin        ShowMessage('FORMAT:
'+jIntentManager1.GetExtraString(intentData, 'SCAN_RESULT_FORMAT')); 
     ShowMessage('CONTENT:
'+jIntentManager1.GetExtraString(intentData, 'SCAN_RESULT'));    end
else ShowMessage('Fail/cancel to scan....');[color=red]//////  ERROR
AFTER PICK IMAGE[/color]  end; /////////////////////// My test (PICK)
 Once executed, SCAN FAIL   if  requestCode =  1001 then  begin    if
resultCode = RESULT_OK then    begin     showmessage(
jIntentManager1.GetDataUriAsString(intentData));       end  else
ShowMessage('Fail! ....!');   end;   end; 

Solved :

I just used another Jintentmanager. One for Xling and one for PICK and
apparently it is solved.