MailAttachment sample snippets

MailAttachment.java

   AssetManager assetManager = getAssets();
   InputStream in = assetManager.open("sample.pdf");

   public File stream2file(InputStream in) throws IOException 
   {
        final File tempFile = File.createTempFile("sample1", ".pdf",
                HomeActivity.this.getExternalCacheDir());
        tempFile.deleteOnExit();

        FileOutputStream out = new FileOutputStream(tempFile);

        // for this you have to add the following dependency in your build.gradle
        // compile 'org.apache.commons:commons-io:1.3.2'

        IOUtils.copy(in, out);
        return tempFile;
    }
    
    private void browseDocuments() 
    {

        String[] mimeTypes =
                {"application/msword", "text/plain", "application/pdf", "application/zip"};

        Intent intent = new Intent(Intent.ACTION_GET_CONTENT);

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            intent.setType(mimeTypes.length == 1 ? mimeTypes[0] : "*/*");
            if (mimeTypes.length > 0) {
                intent.putExtra(Intent.EXTRA_MIME_TYPES, mimeTypes);
            }
        } else {
            String mimeTypesStr = "";
            for (String mimeType : mimeTypes) {
                mimeTypesStr += mimeType + "|";
            }
            intent.setType(mimeTypesStr.substring(0, mimeTypesStr.length() - 1));
        }
        startActivityForResult(Intent.createChooser(intent, "ChooseFile"), 100);

    }


    String mailID = "jaisonfdo@gmail.com";
    String mailSubject = "Attachment Sample";

    
   public static boolean isNetworkAvailable(Context context) 
   {

        if (checkInternetConnection) {
            ConnectivityManager connectivityManager = (ConnectivityManager)
                    context.getSystemService(Context.CONNECTIVITY_SERVICE);
            NetworkInfo netInfo = connectivityManager.getActiveNetworkInfo();
            if (netInfo != null && netInfo.isConnectedOrConnecting())
                return true;
            else {
                if (showErrorMessage)
                    Toast.makeText(context, networkErrorMessage, Toast.LENGTH_SHORT).show();

                return false;
            }
        } else
            return true;

    }

   public static Boolean isAppAvailable(Context context, String appName) 
   {
        PackageManager pm = context.getPackageManager();
        boolean isInstalled;
        try {
            pm.getPackageInfo(appName,PackageManager.GET_ACTIVITIES);
            isInstalled = true;
        } catch (PackageManager.NameNotFoundException e) {
            isInstalled = false;
        }
        return isInstalled;
    }


   public void sendMail(Context context, String mailID, String subject, File attachment, Uri uri) 
   {
        Intent intent = new Intent();
        intent.setAction(Intent.ACTION_SEND);
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        intent.putExtra(Intent.EXTRA_EMAIL, mailID);
        // Need to grant this permission
        intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
        // Attachment
        intent.setType("vnd.android.cursor.dir/email");

        if (attachment != null)
            intent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(attachment));
        else if (uri != null)
            intent.putExtra(Intent.EXTRA_STREAM, uri);

        if (!TextUtils.isEmpty(subject))
            intent.putExtra(Intent.EXTRA_SUBJECT, subject);

        if (isNetworkAvailable(context)) {
            if (isAppAvailable(context, "com.google.android.gm"))
                intent.setPackage("com.google.android.gm");
            startActivityForResult(intent, 101);
        }
    }