We can open share dialog using ACTION_SEND to share text
Intent sendIntent = new Intent();
sendIntent.setAction(Intent.A
Use the following line.
Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND);
emailIntent.setType("*/*");
emailIntent.putExtra(android.content.Intent.EXTRA_EMAIL, new String[] {"me@gmail.com"});
emailIntent.putExtra(android.content.Intent.EXTRA_SUBJECT,
"Test Subject");
emailIntent.putExtra(android.content.Intent.EXTRA_TEXT,
"go on read the emails");
emailIntent.putExtra(Intent.EXTRA_STREAM, Uri.fromfile(new File(yourtextfilepath));
startActivity(Intent.createChooser(emailIntent, "Send mail..."));
Make sure that your text file path should be from external memory card. Action send wont accept the files from internal memory.
Hope this will help you.