Android: How to use grantUriPermission to be able to create and send an email with a bitmap attachment

Question

From within my application, I\'m trying to create an email that contains an image contained in a bitmap object.

private void sendEmailWithBitmapAttached(){ 
         


        

Answer 1

I had a similar issue. Below is how I solved the problem for my project. You should be able to adapt this for your solution. This solution also has some Firebase code, which you can ignore. The key points are ActivityCompat.requestPermissions and ActivityCompat.checkSelfPermission:

private void shareViaEmail() {
    int permissionCheck = ContextCompat.checkSelfPermission(this, android.Manifest.permission.WRITE_EXTERNAL_STORAGE);
    if (permissionCheck != PackageManager.PERMISSION_GRANTED) {
        if (ActivityCompat.shouldShowRequestPermissionRationale(this, android.Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
            AlertDialog.Builder alertBuilder = new AlertDialog.Builder(this);
            LayoutInflater inflater = this.getLayoutInflater();
            final ViewGroup nullParent = null;
            final View dialogView = inflater.inflate(R.layout.alert_dialog, nullParent);
            alertBuilder.setView(dialogView);

            alertBuilder.setCancelable(true);
            alertBuilder.setTitle("Permission request");

            String message = "\n\n" + getString(R.string.email_images);
            AppCompatTextView notice = (AppCompatTextView) dialogView.findViewById(R.id.notice);
            if (notice != null) {
                notice.setText(message);
                notice.setTextSize(getResources().getInteger(R.integer.dialog_text_size));
            }
            else {
                alertBuilder.setMessage(message);
            }

            alertBuilder.setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {

                @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
                public void onClick(DialogInterface dialog, int which) {
                    mShowingAlert = false;
                    ActivityCompat.requestPermissions(baseActivity(), new String[]{android.Manifest.permission.WRITE_EXTERNAL_STORAGE}, MY_TARGET_WRITE_PERMISSION_REQUEST);
                }
            });

            mAlertDialog = alertBuilder.create();
            mAlertDialog.show();
            return;
        }
    }
    ActivityCompat.requestPermissions(this,
            new String[]{android.Manifest.permission.WRITE_EXTERNAL_STORAGE},
            MY_TARGET_WRITE_PERMISSION_REQUEST);
}

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
        if (requestCode == MY_TARGET_WRITE_PERMISSION_REQUEST) {
            doShareViaEmail();
        } else {
            failWriteImage();
        }
    }
}

protected void failWriteImage() {
    getHandler().post(new Runnable() {
        @Override

        public void run() {
            String email_failed = getResources().getString(R.string.fail_email_attach);
            @SuppressLint("ShowToast") Toast toast = Toast.makeText(getApplicationContext(), email_failed, Toast.LENGTH_SHORT);
            new CustomToast(toast).invoke();
        }
    });
}

protected void doShareViaEmail() {
    FireUtilities fireUtilities = FireUtilities.getInstance();
    fireUtilities.logEvent(mFirebaseAnalytics, "option_item", "share", "share_string");

    Intent intent = new Intent(Intent.ACTION_SEND_MULTIPLE);
    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    intent.putExtra(Intent.EXTRA_SUBJECT, getString(R.string.string_share));

    String appStoreLink = getString(R.string.app_store_link);

    String emailText = getString(R.string.share_string_body1)
            + " " + appStoreLink
            + " " + getString(R.string.share_string_body2);

    emailText = emailText + "<br><br>" + getTitleOfSegment(true, mCurrentSegment, mCurrentSegmentIndex);

    Bitmap targetImage = screenShot(mTargetImageView);
    if (targetImage != null) {
        ArrayList<Uri> files = new ArrayList<Uri>();
        String path = MediaStore.Images.Media.insertImage(getContentResolver(), targetImage, "string", null);
        Uri targetUri = Uri.parse(path);
        files.add(targetUri);
        intent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, files);
    }

    intent.setType("message/rfc822");

    Spanned htmlText = fromHtml(getString(R.string.share_score_head1)
            + emailText + getString(R.string.share_score_head2));
    intent.putExtra(Intent.EXTRA_TEXT, htmlText);

    try {
        startActivityForResult(Intent.createChooser(intent, "Email:"), 1234);
    } catch (final android.content.ActivityNotFoundException e) {
        String no_email_client = getResources().getString(R.string.no_email_client);
        @SuppressLint("ShowToast") Toast toast = Toast.makeText(getApplicationContext(), no_email_client, Toast.LENGTH_LONG);
        new CustomToast(toast).invoke();
    }
}

public void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == 1234) {
        LogHelper.v(TAG, "e-mail successfully sent");
    }
}

public Bitmap screenShot(View view) {
    if (view != null) {
        Bitmap bitmap = Bitmap.createBitmap(view.getWidth(),
                view.getHeight(), Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(bitmap);
        view.draw(canvas);
        return bitmap;
    }
    return null;
}

Answer 2

Try including this in your AndroidManifest.xml.

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

On Android 6.0+ the permission must be granted by the user to the application otherwise this will throw the SecurityException.

To do this go into Settings/Apps/[AppName]/Permissions and allow the Storage Permission.

Answer 3

I solved my issue by also adding permission flags to the intent, like this:

intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);

More details can be found in documentation: https://developer.android.com/reference/android/support/v4/content/FileProvider.html#Permissions