PDF control Obsolete code "SaveAndroid.cs" for android

[eyner]

I am using the control to generate a PDF and it tells me that some things are obsolete in the code

if (ContextCompat.CheckSelfPermission(Forms.Context, Manifest.Permission.WriteExternalStorage) != Permission.Granted) {

 ActivityCompat.RequestPermissions((Android.App.Activity)Forms.Context, new String[] { Manifest.Permission.WriteExternalStorage }, 1); 

 }

Forms.Context obsolete

and

//Get the root path in android device.

        if (Android.OS.Environment.IsExternalStorageEmulated)

        {

            root = Android.OS.Environment.ExternalStorageDirectory.ToString();

        }

        else

            root = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);

ExternalStorageDirectory Obsolete

[Gowthamraj Kumar]

Hi eyner, 

 

Thank you for contacting Syncfusion support. 

 

if (ContextCompat.CheckSelfPermission(Forms.Context, Manifest.Permission.WriteExternalStorage) != Permission.Granted) {   ActivityCompat.RequestPermissions((Android.App.Activity)Forms.Context, new String[] { Manifest.Permission.WriteExternalStorage }, 1);    }  Forms.Context obsolete	This API is deprecated from Xamarin Forms API level 29. We have alternative solution to overcome this depreciated APIs by changing the Forms.Context to Android.App.Application.Context.
Get the root path in android device.          if (Android.OS.Environment.IsExternalStorageEmulated)          {              root = Android.OS.Environment.ExternalStorageDirectory.ToString();          }          else              root = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);    ExternalStorageDirectory Obsolete	You can replace the following code to get the external storage download folder in the SaveAndroid.cs file.  if (Android.OS.Environment.IsExternalStorageEmulated)     {   root = Android.OS.Environment.GetExternalStoragePublicDirectory(Android.OS.Environment.DirectoryDownloads).AbsolutePath;                 }

 

Regards, 

Gowthamraj K 

[eyner]

Thanks for answering.

It tells me that it is also obsolete and that I do not have permission to access the path

root = Android.OS.Environment.GetExternalStoragePublicDirectory(Android.OS.Environment.DirectoryDownloads).AbsolutePath

Deprecated

the project is for

android: minSdkVersion = "21"

android: targetSdkVersion = "30"

And for this piece of code which is the permission I had to use a plugin to make it work

"Plugin.CurrentActivity;"

Before

if (ContextCompat.CheckSelfPermission(Forms.Context, Manifest.Permission.WriteExternalStorage) != Permission.Granted) {

ActivityCompat.RequestPermissions((Android.App.Activity)Forms.Context, new String[] { Manifest.Permission.WriteExternalStorage }, 1);

}

After

using Plugin.CurrentActivity;

var activity = CrossCurrentActivity.Current.Activity;

if (ContextCompat.CheckSelfPermission(Android.App.Application.Context, Manifest.Permission.WriteExternalStorage) != Permission.Granted)

{

ActivityCompat.RequestPermissions(activity, new[]

{

Manifest.Permission.WriteExternalStorage

}, 1);

}

Could you make a sample if possible please

[Prakash Viswanathan]

Hi Eyner, 

Thank you for the update.  

Currently we are creating sample with alternate APIs for absolute APIs. We will update you the working sample by Nov 9, 2021.  

Regards, 

Prakash V 

[Surya Venkatesan]

Hi Eyner, 

 

Thank you for your patience.  

 

Still we are working on your requirement and we will update the further details on November 11^th 2021. 

 

Regards, 

Surya V 

[eyner]

Thanks i waiting

[Gowthamraj Kumar]

Hi eyner, 

 

Thank you for your patience. 

 

On our further analysis, the Android.OS.Environment.GetExternalStoragePublicDirectory API is deprecated in Android 11. We have found the alternative solution to overcome this API issue by using GetExternalFilesDir() method instead of Environment.GetExternalStoragePublicDirectory () to get the external file directory from Application context. 

 

Please find the below code snippet, 

if (Android.OS.Environment.IsExternalStorageEmulated) 

{ 

root = Android.App.Application.Context.GetExternalFilesDir(Android.OS.Environment.DirectoryDownloads).AbsolutePath; 

} 

else 

root = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments); 

   

We have attached the runnable sample for your reference, please find the sample from below link,
Sample: https://www.syncfusion.com/downloads/support/directtrac/general/ze/PDFXamarinSample-1531951196  

 

Please let us know if you need any further assistance in this. 

 

Regards, 

Gowthamraj K 

[eyner]

Its works thanks you.

I have one last question, I have been trying to add images but I get this exception, I don't understand very well in which project or folder the images should be added and how to call them to place them in the PDF document.

this is what I have tried:

[Surya Venkatesan]

Hi eyner, 

 

Thank you for your update. 

 

We have checked the provided code snippet for inserting images in PDF document using Xamarin. We suspect that the exception occurs due to incorrect image path while getting the image stream. We are recommended you to get the image(external resources) file from Assets folder of main project. And we need to set Build Action to Embedded resource for external resource such as images, pdf etc., 

 

Please try the below modified code snippet to get the image file. 

//Get the images as stream 

Stream imageStream =  typeof(MainPage).GetTypeInfo().Assembly.GetManifestResourceStream("PDFejemplo.Assets.Logo.png"); 

  

//Create a new PdfBitmap instance 

PdfBitmap image = new PdfBitmap(imageStream); 

  

//Draw the image 

loadedPage.Graphics.DrawImage(image, new PointF(40, 100)); 

 

Please refer the 7^th step in the below KB documentation, 

https://www.syncfusion.com/kb/10375/how-to-insert-an-image-into-pdf-in-xamarin 

 

Please try the above suggestion on your end and lets know the result. 

 

Regards, 

Surya V