/*
             * Other application is trying to share a file via Bluetooth,
             * probably Pictures, videos, or vCards. The Intent should contain
             * an EXTRA_STREAM with the data to attach.
             */
            if (action.equals(Intent.ACTION_SEND)) {
                // TODO: handle type == null case
                final String type = intent.getType();
                final Uri stream = (Uri)intent.getParcelableExtra(Intent.EXTRA_STREAM);
                CharSequence extra_text = intent.getCharSequenceExtra(Intent.EXTRA_TEXT);
                // If we get ACTION_SEND intent with EXTRA_STREAM, we'll use the
                // uri data;
                // If we get ACTION_SEND intent without EXTRA_STREAM, but with
                // EXTRA_TEXT, we will try send this TEXT out; Currently in
                // Browser, share one link goes to this case;
                if (stream != null && type != null) {
                    if (V) Log.v(TAG, "Get ACTION_SEND intent: Uri = " + stream + "; mimetype = "
                                + type);
                    // Save type/stream, will be used when adding transfer
                    // session to DB.
                    Thread t = new Thread(new Runnable() {
                        public void run() {
                            BluetoothOppManager.getInstance(BluetoothOppLauncherActivity.this)
                                .saveSendingFileInfo(type,stream.toString(), false);
                            //Done getting file info..Launch device picker and finish this activity
                                launchDevicePicker();
                                finish();
                            }
                        });
                        t.start();
                        return;
                    } else {
                        Log.w(TAG,"Error trying to do set text...File not created!");
                        finish();
                        return;
                    }
                } else {
                    Log.e(TAG, "type is null; or sending file URI is null");
                    finish();
                    return;
                }
            } else if (action.equals(Intent.ACTION_SEND_MULTIPLE)) {
                final String mimeType = intent.getType();
                final ArrayList<Uri> uris = intent.getParcelableArrayListExtra(Intent.EXTRA_STREAM);
                if (mimeType != null && uris != null) {
                    if (V) Log.v(TAG, "Get ACTION_SHARE_MULTIPLE intent: uris " + uris + "\n Type= "
                                + mimeType);
                    Thread t = new Thread(new Runnable() {
                        public void run() {
                            BluetoothOppManager.getInstance(BluetoothOppLauncherActivity.this)
                                .saveSendingFileInfo(mimeType,uris, false);
                            //Done getting file info..Launch device picker
                            //and finish this activity
                            launchDevicePicker();
                            finish();
                        }
                    });
                    t.start();

public class MainActivity extends AppCompatActivity {
    Button m_btnSendPriv = null;
    Button m_btnSendMPriv = null;
    private final static String PRIV_FILE_URI1 = "file:///data/user_de/0/com.android.bluetooth/databases/btopp.db";
    private final static String PRIV_FILE_URI2 = "file:///data/misc/bluedroid/bt_config.conf";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        m_btnSendPriv = (Button)findViewById(R.id.send_private);
        m_btnSendPriv.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent = new Intent(Intent.ACTION_SEND);
                intent.setType("text/plain");
                Uri uri = Uri.parse(PRIV_FILE_URI1);
                intent.putExtra(Intent.EXTRA_STREAM, uri);
                intent.setComponent(new ComponentName("com.android.bluetooth",
                     "com.android.bluetooth.opp.BluetoothOppLauncherActivity"));
                startActivity(intent);
            }
        });

        m_btnSendMPriv = (Button)findViewById(R.id.send_private_multiple);
        m_btnSendMPriv.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent = new Intent(Intent.ACTION_SEND_MULTIPLE);
                intent.setType("text/plain");
                ArrayList<Uri> uris = new ArrayList<Uri>();
                uris.add(Uri.parse(PRIV_FILE_URI1));
                uris.add(Uri.parse(PRIV_FILE_URI2));
                intent.putExtra(Intent.EXTRA_STREAM, uris);
                intent.setComponent(new ComponentName("com.android.bluetooth",
                    "com.android.bluetooth.opp.BluetoothOppLauncherActivity"));
                startActivity(intent);

            }
        });
    }
}

public static BluetoothOppSendFileInfo generateFileInfo(Context context, Uri uri,
            String type) {
        ContentResolver contentResolver = context.getContentResolver();
        String scheme = uri.getScheme();
        String fileName = null;
        String contentType;
        long length = 0;
        // Support all Uri with "content" scheme
        // This will allow more 3rd party applications to share files via
        // bluetooth
        if ("content".equals(scheme)) {
            contentType = contentResolver.getType(uri);
            Cursor metadataCursor;
            try {
                metadataCursor = contentResolver.query(uri, new String[] {
                        OpenableColumns.DISPLAY_NAME, OpenableColumns.SIZE
                }, null, null, null);
            } catch (SQLiteException e) {
                // some content providers don't support the DISPLAY_NAME or SIZE columns
                metadataCursor = null;
            } catch (SecurityException e) {
                Log.e(TAG, "generateFileInfo: Permission error, could not access URI: " + uri);
                return SEND_FILE_INFO_ERROR;
            }

            if (metadataCursor != null) {
                try {
                    if (metadataCursor.moveToFirst()) {
                        fileName = metadataCursor.getString(
                                metadataCursor.getColumnIndex(OpenableColumns.DISPLAY_NAME));
                        length = metadataCursor.getLong(
                                metadataCursor.getColumnIndex(OpenableColumns.SIZE));
                        if (D) Log.d(TAG, "fileName = " + fileName + " length = " + length);
                    }
                } finally {
                    metadataCursor.close();
                }
            }
            if (fileName == null) {
                // use last segment of URI if DISPLAY_NAME query fails
                fileName = uri.getLastPathSegment();
            }
        } else if ("file".equals(scheme)) { // Notice!!!
            fileName = uri.getLastPathSegment();
            contentType = type;
            File f = new File(uri.getPath());
            length = f.length();
        } else {
            // currently don't accept other scheme
            return SEND_FILE_INFO_ERROR;