Sharing a png image in drawable folder

Question

I am integrating share with the following code for the app.

private void socialShare()
    {
        Uri uri = Uri.parse("android.resource://com.example.myproject/drawable/appicon");
        Intent shareIntent = new Intent();
        shareIntent.setAction(Intent.ACTION_SEND);
        shareIntent.putExtra(Intent.EXTRA_STREAM, uri);
        shareIntent.putExtra(Intent.EXTRA_TEXT, "sharing myapp");
        shareIntent.setType("image/jpeg");
        startActivity(Intent.createChooser(shareIntent, "Share from"));
    }

As in the above code, I am trying to put png image which is in drawable folder. But the image is unable to be sent. Is that because in setType, it's image/jpeg? I can't use jpeg, because it loses transparency. Can some one please suggest me how to share with image?

Here is the code that I use to copy the image from drawable to sdcard:

String commonPath = Environment.getExternalStorageDirectory().toString() + "/MyAppFolder"; 
        File direct = new File(commonPath);

        if(!direct.exists())
        {
            if(direct.mkdir()) 
              {
                Log.d("tag","directory created");
               //directory is created;
              }

        }

        Bitmap bm = BitmapFactory.decodeResource( getResources(), R.drawable.sharingimage);
        OutputStream outStream = null;
           File savingFile = new File(commonPath, "shareImage.png");
           if(!savingFile.exists())
           {
               Log.d("tag","file is created");

           try {
                savingFile.createNewFile();
                outStream = new FileOutputStream(savingFile);
                bm.compress(Bitmap.CompressFormat.PNG, 100, outStream);
                outStream.flush();
                outStream.close();

                Log.d("tag","Saved");

               } catch (FileNotFoundException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();

               } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();

               }

            }

Answer 1

No need for a permission. No need to implement a content provider.

This is what you need:

Manifest:

        <provider
            android:name="androidx.core.content.FileProvider" android:authorities="${applicationId}"
            android:exported="false" android:grantUriPermissions="true">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS" android:resource="@xml/provider_paths" />
        </provider>

res/xml/provider_paths.xml

<paths>
    <cache-path
        name="cache_root" path="." />
</paths>

And the code to use its Intent:

@WorkerThread
fun shareDrawable(context: Context, @DrawableRes resourceId: Int, fileName: String): Intent {
    val bitmap = ResourcesCompat.getDrawable(context.resources, resourceId, null)!!.toBitmap()
    val outputFile = File(context.cacheDir, "$fileName.png")
    val outPutStream = FileOutputStream(outputFile)
    bitmap.compress(CompressFormat.PNG, 100, outPutStream)
    outPutStream.flush()
    outPutStream.close()
    val shareIntent = Intent(Intent.ACTION_SEND)
    shareIntent.putExtra(Intent.EXTRA_STREAM, if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N)
        androidx.core.content.FileProvider.getUriForFile(context, context.packageName, outputFile)
    else
        Uri.fromFile(outputFile))
    shareIntent.type = "image/png"
    return shareIntent
}