imageBase64 initWithContentsOfURL:options:maxLength:error

[ahaikal]

Hi,
For large strings
imageBase64 works fine on Android
On IOS, i'm getting

2021-10-25 12:24:37.345579-0400 [30648:11504014] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[_NSPlaceholderData initWithContentsOfURL:options:maxLength:error:]: nil URL argument'
*** First throw call stack:
(
	0   CoreFoundation                      0x00007fff203fbbb4 __exceptionPreprocess + 242
	1   libobjc.A.dylib                     0x00007fff2019ebe7 objc_exception_throw + 48
	2   Foundation                          0x00007fff207315f0 -[NSData(NSData) initWithContentsOfURL:options:maxLength:error:] + 581
	3   Foundation                          0x00007fff20730fb6 +[NSData(NSData) dataWithContentsOfURL:options:error:] + 49
	4   FreshSUQPOS                         0x00000001103cb064 -[EscPosPrinter handleCommand:params:] + 1476
	5   FreshSUQPOS                         0x00000001103cb641 -[EscPosPrinter printFromBuffer:onSuccess:onError:] + 449
	6   FreshSUQPOS                         0x00000001103c9084 __55-[EscPosPrinter printBuffer:withResolver:withRejecter:]_block_invoke + 244
	7   Foundation                          0x00007fff207df16b __NSBLOCKOPERATION_IS_CALLING_OUT_TO_A_BLOCK__ + 7
	8   Foundation                          0x00007fff207df063 -[NSBlockOperation main] + 98
	9   Foundation                          0x00007fff207e2073 __NSOPERATION_IS_INVOKING_MAIN__ + 17
	10  Foundation                          0x00007fff207de2b0 -[NSOperation start] + 785
	11  Foundation                          0x00007fff207e29c7 __NSOPERATIONQUEUE_IS_STARTING_AN_OPERATION__ + 17
	12  Foundation                          0x00007fff207e250c __NSOQSchedule_f + 182
	13  libdispatch.dylib                   0x00000001119f0bf7 _dispatch_block_async_invoke2 + 83
	14  libdispatch.dylib                   0x00000001119e1c0c _dispatch_client_callout + 8
	15  libdispatch.dylib                   0x00000001119e4595 _dispatch_continuation_pop + 594
	16  libdispatch.dylib                   0x00000001119e3964 _dispatch_async_redirect_invoke + 778
	17  libdispatch.dylib                   0x00000001119f3b44 _dispatch_root_queue_drain + 403
	18  libdispatch.dylib                   0x00000001119f45ec _dispatch_worker_thread2 + 196
	19  libsystem_pthread.dylib             0x00007fff6bfeb417 _pthread_wqthread + 244
	20  libsystem_pthread.dylib             0x00007fff6bfea42f start_wqthread + 15

[tr3v3r]

Hi! Could you please share the image? I’ll try to figure out what’s the problem.
( put in file please. do not paste all base64 here )

[ahaikal]

Thank you @tr3v3r , IMG

[tr3v3r]

@ahaikal just tested your image - everything works well.
Have you started your base64 data with data:image/png;base64, ?

Here is the ts file with base64 encoded string:
testBase64.ts.zip

import { testBase64 } from './testBase64';

...
  .imageBase64(testBase64, 500)
...

[tr3v3r]

@ahaikal hi!
Just released a new version (1.4.0) with support printing remote images and from a local sources.
Check the docs here

printing.initialize()
    .image(require('./store.png'), {
        width: 75,
        halftone: 'EPOS2_HALFTONE_THRESHOLD',
      })
    .image({ uri: base64Image }, { width: 75 })
    .image(
      {
        uri:
          'https://raw.githubusercontent.com/tr3v3r/react-native-esc-pos-printer/main/ios/store.png',
      },
      { width: 75 }
    )
    .cut()
    .send();