diff --git a/.gitignore b/.gitignore
index 347e252..1ce5acb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -31,3 +31,5 @@ google-services.json
# Android Profiling
*.hprof
+
+.DS_Store
diff --git a/README.md b/README.md
index ac25a28..8bd7aec 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,6 @@
# mEDIFIER
-Edifier Connect(140MB+)->mEDIFIER(3MB+)
+I just don't know why the Edifier Connect takes more than 200MB on my phone.
+
+# Limitations
++ Tested on W820NB and W820NB Plus only
++ Works for RFCOMM only
\ No newline at end of file
diff --git a/app/.gitignore b/app/.gitignore
new file mode 100644
index 0000000..42afabf
--- /dev/null
+++ b/app/.gitignore
@@ -0,0 +1 @@
+/build
\ No newline at end of file
diff --git a/app/build.gradle b/app/build.gradle
new file mode 100644
index 0000000..c407dda
--- /dev/null
+++ b/app/build.gradle
@@ -0,0 +1,33 @@
+plugins {
+ id 'com.android.application'
+}
+
+android {
+ namespace 'priv.wh201906.medifier'
+ compileSdk 31
+
+ defaultConfig {
+ applicationId "priv.wh201906.medifier"
+ minSdk 19
+ targetSdk 31
+ versionCode 1
+ versionName "0.0.1"
+ }
+
+ buildTypes {
+ release {
+ minifyEnabled false
+ proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+ }
+ }
+ compileOptions {
+ sourceCompatibility JavaVersion.VERSION_1_8
+ targetCompatibility JavaVersion.VERSION_1_8
+ }
+}
+
+dependencies {
+
+ implementation 'androidx.appcompat:appcompat:1.4.1'
+ implementation 'androidx.constraintlayout:constraintlayout:2.1.3'
+}
\ No newline at end of file
diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
new file mode 100644
index 0000000..481bb43
--- /dev/null
+++ b/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+# http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+# public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
\ No newline at end of file
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..79280b3
--- /dev/null
+++ b/app/src/main/AndroidManifest.xml
@@ -0,0 +1,28 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/app/src/main/java/priv/wh201906/medifier/MainActivity.java b/app/src/main/java/priv/wh201906/medifier/MainActivity.java
new file mode 100644
index 0000000..fb3b3db
--- /dev/null
+++ b/app/src/main/java/priv/wh201906/medifier/MainActivity.java
@@ -0,0 +1,281 @@
+package priv.wh201906.medifier;
+
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.app.ActivityCompat;
+
+import android.Manifest;
+import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.BluetoothDevice;
+import android.bluetooth.BluetoothSocket;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.os.Bundle;
+import android.os.ParcelUuid;
+import android.util.Log;
+import android.view.View;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
+import android.widget.Button;
+import android.widget.ListView;
+import android.widget.SimpleAdapter;
+import android.widget.Toast;
+
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.UUID;
+
+public class MainActivity extends AppCompatActivity
+{
+ private static final String TAG = "mEDIFIER";
+ private final UUID SPP_UUID = UUID.fromString("EDF00000-EDFE-DFED-FEDF-EDFEDFEDFEDF");
+ private BluetoothAdapter mBluetoothAdapter;
+ private BluetoothSocket mBluetoothSocket;
+ private OutputStream mOutputStream;
+ private boolean mConnected = false;
+
+ @Override
+ protected void onCreate(Bundle savedInstanceState)
+ {
+ super.onCreate(savedInstanceState);
+ setContentView(R.layout.activity_main);
+
+ Button connectButton = findViewById(R.id.connectButton);
+ ListView commandListView = findViewById(R.id.commandListView);
+
+ connectButton.setOnClickListener(view ->
+ {
+ mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
+
+ if (mBluetoothAdapter == null)
+ {
+ Toast.makeText(getApplicationContext(), R.string.toast_no_bluetooth, Toast.LENGTH_SHORT).show();
+ }
+ if (!mBluetoothAdapter.isEnabled())
+ {
+ Toast.makeText(getApplicationContext(), R.string.toast_bluetooth_not_open, Toast.LENGTH_SHORT).show();
+ }
+ else
+ {
+ connectToDevice();
+ }
+
+ });
+
+ InputStream inputStream = getResources().openRawResource(R.raw.cmd);
+ BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
+ StringBuilder stringBuilder = new StringBuilder();
+ String line;
+ try
+ {
+ while ((line = reader.readLine()) != null)
+ stringBuilder.append(line);
+ reader.close();
+ inputStream.close();
+ } catch (IOException e)
+ {
+ e.printStackTrace();
+ }
+
+ JSONArray jsonArray = null;
+ List> adapterData = new ArrayList<>();
+ try
+ {
+ jsonArray = new JSONArray(stringBuilder.toString());
+ String packageName = getPackageName();
+ for (int i = 0; i < jsonArray.length(); i++)
+ {
+ JSONObject jsonObject = jsonArray.getJSONObject(i);
+ String name = jsonObject.getString("name");
+ int translatedTextId = getResources().getIdentifier(name, "string", packageName);
+ String cmd = jsonObject.getString("cmd");
+
+ Map item = new HashMap<>();
+ item.put("name", (translatedTextId == 0) ? name : getString(translatedTextId));
+ item.put("cmd", cmd);
+
+ adapterData.add(item);
+ }
+ } catch (JSONException e)
+ {
+ throw new RuntimeException(e);
+ }
+
+ String[] from = {"name", "cmd"};
+ int[] to = {android.R.id.text1, android.R.id.text2};
+
+ SimpleAdapter adapter = new SimpleAdapter(this, adapterData, android.R.layout.simple_list_item_2, from, to);
+ commandListView.setAdapter(adapter);
+ commandListView.setOnItemClickListener((parent, view, position, id) ->
+ {
+ Map button = (Map) parent.getItemAtPosition(position);
+ String cmdHex = button.get("cmd");
+ byte[] cmd = hexToBytes(cmdHex);
+ byte[] cmdWithHead = new byte[cmd.length + 2];
+ cmdWithHead[0] = -86;
+ // should not be more than 127
+ cmdWithHead[1] = (byte) cmd.length;
+ System.arraycopy(cmd, 0, cmdWithHead, 2, cmd.length);
+ byte[] fullCmd = addCRC(cmdWithHead);
+ Log.i("DATA", bytesToHex(fullCmd));
+ sendData(fullCmd);
+ });
+
+
+ }
+
+ public static String bytesToHex(byte[] bytes)
+ {
+ StringBuilder sb = new StringBuilder();
+ for (byte b : bytes)
+ {
+ sb.append(String.format("%02X", b));
+ }
+ return sb.toString();
+ }
+
+ public static byte[] hexToBytes(String hexString)
+ {
+ int length = hexString.length();
+ byte[] data = new byte[length / 2];
+ for (int i = 0; i < length; i += 2)
+ {
+ data[i / 2] = (byte) ((Character.digit(hexString.charAt(i), 16) << 4)
+ + Character.digit(hexString.charAt(i + 1), 16));
+ }
+ return data;
+ }
+
+ public byte[] addCRC(byte[] bArr)
+ {
+ int i;
+ byte b;
+ i = 8217;
+ for (byte b2 : bArr)
+ {
+ i += b2 & 255;
+ }
+ int length = bArr.length + 2;
+ byte[] bArr2 = new byte[length];
+ System.arraycopy(bArr, 0, bArr2, 0, bArr.length);
+ bArr2[length - 2] = (byte) (i >> 8);
+ bArr2[length - 1] = (byte) (i & 255);
+ CRCCheck(bArr2);
+ Log.i("CRC", "CRC_value:" + bytesToHex(bArr2) + ",length:" + i + ",data:" + bytesToHex(bArr));
+ return bArr2;
+ }
+
+ public static boolean CRCCheck(byte[] bArr)
+ {
+ int i = (bArr[bArr.length - 1] & 255) + ((bArr[bArr.length - 2] << 8) & 65280);
+ int i2 = 0;
+ for (int i3 = 0; i3 < bArr.length - 1; i3++)
+ {
+ if (i3 < bArr.length - 2)
+ {
+ i2 += bArr[i3] & 255;
+ }
+ }
+ return i2 + 8217 == i;
+ }
+
+
+ @Override
+ public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults)
+ {
+ super.onRequestPermissionsResult(requestCode, permissions, grantResults);
+ if (requestCode == 0)
+ {
+ if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED)
+ {
+ }
+ else
+ {
+ }
+ }
+ }
+
+ private void connectToDevice()
+ {
+ if (ActivityCompat.checkSelfPermission(this, Manifest.permission.BLUETOOTH_CONNECT) != PackageManager.PERMISSION_GRANTED)
+ {
+ ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.BLUETOOTH_CONNECT}, 0);
+ return;
+ }
+ Set bondedDevices = mBluetoothAdapter.getBondedDevices();
+ BluetoothSocket socket = null;
+ boolean isEDIFIERDevice = false;
+ for (BluetoothDevice device : bondedDevices)
+ {
+ try
+ {
+ isEDIFIERDevice = false;
+ Log.i(TAG, device.getAddress());
+ for (ParcelUuid uuid : device.getUuids())
+ {
+ if (uuid.getUuid().equals(SPP_UUID))
+ {
+ isEDIFIERDevice = true;
+ break;
+ }
+ }
+ if (!isEDIFIERDevice)
+ continue;
+
+ socket = device.createRfcommSocketToServiceRecord(SPP_UUID);
+ socket.connect();
+ break;
+ } catch (IOException e)
+ {
+ e.printStackTrace();
+ }
+ }
+ if (!isEDIFIERDevice)
+ {
+ Toast.makeText(getApplicationContext(), R.string.toast_device_not_found, Toast.LENGTH_SHORT).show();
+ }
+ if (socket.isConnected())
+ {
+ mBluetoothSocket = socket;
+ try
+ {
+ mOutputStream = mBluetoothSocket.getOutputStream();
+ } catch (IOException e)
+ {
+ e.printStackTrace();
+ }
+ mConnected = true;
+ Log.i(TAG, "Connected");
+ Toast.makeText(getApplicationContext(), R.string.toast_device_connected, Toast.LENGTH_SHORT).show();
+ }
+ }
+
+ private void sendData(byte[] data)
+ {
+ if (!mConnected)
+ {
+ Toast.makeText(getApplicationContext(), R.string.toast_device_not_connected, Toast.LENGTH_SHORT).show();
+ return;
+ }
+ try
+ {
+ mOutputStream.write(data);
+ } catch (IOException e)
+ {
+ e.printStackTrace();
+ }
+ }
+}
\ No newline at end of file
diff --git a/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
index 0000000..2b068d1
--- /dev/null
+++ b/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,30 @@
+
+
+
+
+