diff --git a/app/src/androidTest/java/ryey/easer/plugins/operation/launch_app/LaunchAppOperationDataTest.java b/app/src/androidTest/java/ryey/easer/plugins/operation/launch_app/LaunchAppOperationDataTest.java
new file mode 100644
index 00000000..5a5e74a6
--- /dev/null
+++ b/app/src/androidTest/java/ryey/easer/plugins/operation/launch_app/LaunchAppOperationDataTest.java
@@ -0,0 +1,21 @@
+package ryey.easer.plugins.operation.launch_app;
+
+import android.os.Parcel;
+
+import org.junit.Test;
+
+import ryey.easer.plugins.TestHelper;
+
+import static org.junit.Assert.assertEquals;
+
+public class LaunchAppOperationDataTest {
+
+    @Test
+    public void testParcel() {
+        LaunchAppOperationData dummyData = new LaunchAppOperationDataFactory().dummyData();
+        Parcel parcel = TestHelper.writeToParcel(dummyData);
+        LaunchAppOperationData parceledData = LaunchAppOperationData.CREATOR.createFromParcel(parcel);
+        assertEquals(dummyData, parceledData);
+    }
+
+}
\ No newline at end of file
diff --git a/app/src/main/java/ryey/easer/plugins/PluginRegistry.java b/app/src/main/java/ryey/easer/plugins/PluginRegistry.java
index fa0438c7..7f27f492 100644
--- a/app/src/main/java/ryey/easer/plugins/PluginRegistry.java
+++ b/app/src/main/java/ryey/easer/plugins/PluginRegistry.java
@@ -60,6 +60,7 @@
 import ryey.easer.plugins.operation.command.CommandOperationPlugin;
 import ryey.easer.plugins.operation.event_control.EventControlOperationPlugin;
 import ryey.easer.plugins.operation.hotspot.HotspotOperationPlugin;
+import ryey.easer.plugins.operation.launch_app.LaunchAppOperationPlugin;
 import ryey.easer.plugins.operation.media_control.MediaControlOperationPlugin;
 import ryey.easer.plugins.operation.network_transmission.NetworkTransmissionOperationPlugin;
 import ryey.easer.plugins.operation.ringer_mode.RingerModeOperationPlugin;
@@ -122,6 +123,7 @@ final public class PluginRegistry {
         operation().registerPlugin(AlarmOperationPlugin.class);
         operation().registerPlugin(EventControlOperationPlugin.class);
         operation().registerPlugin(VolumeOperationPlugin.class);
+        operation().registerPlugin(LaunchAppOperationPlugin.class);
         //TODO: write more plugins
     }
 
diff --git a/app/src/main/java/ryey/easer/plugins/operation/launch_app/LaunchAppLoader.java b/app/src/main/java/ryey/easer/plugins/operation/launch_app/LaunchAppLoader.java
new file mode 100644
index 00000000..0cac0619
--- /dev/null
+++ b/app/src/main/java/ryey/easer/plugins/operation/launch_app/LaunchAppLoader.java
@@ -0,0 +1,25 @@
+package ryey.easer.plugins.operation.launch_app;
+
+import android.content.Context;
+import android.content.Intent;
+import android.support.annotation.NonNull;
+
+import ryey.easer.commons.plugindef.ValidData;
+import ryey.easer.commons.plugindef.operationplugin.OperationLoader;
+
+public class LaunchAppLoader extends OperationLoader<LaunchAppOperationData> {
+    LaunchAppLoader(Context context) {
+        super(context);
+    }
+
+    @Override
+    public boolean load(@ValidData @NonNull LaunchAppOperationData data) {
+        Intent intent = context.getPackageManager().getLaunchIntentForPackage(data.app_package);
+        if (intent != null) {
+            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+            context.startActivity(intent);
+            return true;
+        }
+        return false;
+    }
+}
diff --git a/app/src/main/java/ryey/easer/plugins/operation/launch_app/LaunchAppOperationData.java b/app/src/main/java/ryey/easer/plugins/operation/launch_app/LaunchAppOperationData.java
new file mode 100644
index 00000000..36c31bc3
--- /dev/null
+++ b/app/src/main/java/ryey/easer/plugins/operation/launch_app/LaunchAppOperationData.java
@@ -0,0 +1,94 @@
+package ryey.easer.plugins.operation.launch_app;
+
+import android.os.Parcel;
+import android.support.annotation.NonNull;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import ryey.easer.Utils;
+import ryey.easer.commons.C;
+import ryey.easer.commons.IllegalStorageDataException;
+import ryey.easer.commons.plugindef.operationplugin.OperationData;
+
+public class LaunchAppOperationData implements OperationData {
+    private static final String K_APP_PACKAGE = "package";
+
+    final String app_package;
+
+    LaunchAppOperationData(String app_package) {
+        this.app_package = app_package;
+    }
+
+    LaunchAppOperationData(@NonNull String data, @NonNull C.Format format, int version) throws IllegalStorageDataException {
+        switch (format) {
+            default:
+                try {
+                    JSONObject jsonObject = new JSONObject(data);
+                    app_package = jsonObject.getString(K_APP_PACKAGE);
+                } catch (JSONException e) {
+                    throw new IllegalStorageDataException(e);
+                }
+        }
+    }
+
+    @NonNull
+    @Override
+    public String serialize(@NonNull C.Format format) {
+        String ret;
+        switch (format) {
+            default:
+                try {
+                    JSONObject jsonObject = new JSONObject();
+                    jsonObject.put(K_APP_PACKAGE, app_package);
+                    ret = jsonObject.toString();
+                } catch (JSONException e) {
+                    throw new IllegalStateException(e);
+                }
+        }
+        return ret;
+    }
+
+    @SuppressWarnings({"SimplifiableIfStatement", "RedundantIfStatement"})
+    @Override
+    public boolean isValid() {
+        return app_package != null && !Utils.isBlank(app_package);
+    }
+
+    @SuppressWarnings({"SimplifiableIfStatement", "RedundantIfStatement"})
+    @Override
+    public boolean equals(Object obj) {
+        if (obj == this)
+            return true;
+        if (obj == null || !(obj instanceof LaunchAppOperationData))
+            return false;
+        if (!Utils.nullableEqual(app_package, ((LaunchAppOperationData) obj).app_package))
+            return false;
+        return true;
+    }
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    public void writeToParcel(Parcel dest, int flags) {
+        dest.writeString(app_package);
+    }
+
+    public static final Creator<LaunchAppOperationData> CREATOR
+            = new Creator<LaunchAppOperationData>() {
+        public LaunchAppOperationData createFromParcel(Parcel in) {
+            return new LaunchAppOperationData(in);
+        }
+
+        public LaunchAppOperationData[] newArray(int size) {
+            return new LaunchAppOperationData[size];
+        }
+    };
+
+    private LaunchAppOperationData(Parcel in) {
+        app_package = in.readString();
+    }
+}
diff --git a/app/src/main/java/ryey/easer/plugins/operation/launch_app/LaunchAppOperationDataFactory.java b/app/src/main/java/ryey/easer/plugins/operation/launch_app/LaunchAppOperationDataFactory.java
new file mode 100644
index 00000000..73387330
--- /dev/null
+++ b/app/src/main/java/ryey/easer/plugins/operation/launch_app/LaunchAppOperationDataFactory.java
@@ -0,0 +1,30 @@
+package ryey.easer.plugins.operation.launch_app;
+
+import android.support.annotation.NonNull;
+
+import ryey.easer.commons.C;
+import ryey.easer.commons.IllegalStorageDataException;
+import ryey.easer.commons.plugindef.ValidData;
+import ryey.easer.commons.plugindef.operationplugin.OperationDataFactory;
+
+class LaunchAppOperationDataFactory implements OperationDataFactory<LaunchAppOperationData> {
+    @NonNull
+    @Override
+    public Class<LaunchAppOperationData> dataClass() {
+        return LaunchAppOperationData.class;
+    }
+
+    @ValidData
+    @NonNull
+    @Override
+    public LaunchAppOperationData dummyData() {
+        return new LaunchAppOperationData("com.dummy.app.package");
+    }
+
+    @ValidData
+    @NonNull
+    @Override
+    public LaunchAppOperationData parse(@NonNull String data, @NonNull C.Format format, int version) throws IllegalStorageDataException {
+        return new LaunchAppOperationData(data, format, version);
+    }
+}
diff --git a/app/src/main/java/ryey/easer/plugins/operation/launch_app/LaunchAppOperationPlugin.java b/app/src/main/java/ryey/easer/plugins/operation/launch_app/LaunchAppOperationPlugin.java
new file mode 100644
index 00000000..c46d91c4
--- /dev/null
+++ b/app/src/main/java/ryey/easer/plugins/operation/launch_app/LaunchAppOperationPlugin.java
@@ -0,0 +1,71 @@
+package ryey.easer.plugins.operation.launch_app;
+
+import android.app.Activity;
+import android.content.Context;
+import android.support.annotation.NonNull;
+
+import ryey.easer.R;
+import ryey.easer.commons.plugindef.PluginViewFragment;
+import ryey.easer.commons.plugindef.operationplugin.OperationDataFactory;
+import ryey.easer.commons.plugindef.operationplugin.OperationLoader;
+import ryey.easer.commons.plugindef.operationplugin.OperationPlugin;
+import ryey.easer.commons.plugindef.operationplugin.PrivilegeUsage;
+
+public class LaunchAppOperationPlugin implements OperationPlugin<LaunchAppOperationData> {
+
+    @NonNull
+    @Override
+    public String id() {
+        return "launch_app";
+    }
+
+    @Override
+    public int name() {
+        return R.string.op_launch_app;
+    }
+
+    @Override
+    public boolean isCompatible(@NonNull final Context context) {
+        return true;
+    }
+
+    @NonNull
+    @Override
+    public PrivilegeUsage privilege() {
+        return PrivilegeUsage.no_root;
+    }
+
+    @Override
+    public int maxExistence() {
+        return 0;
+    }
+
+    @Override
+    public boolean checkPermissions(@NonNull Context context) {
+        return true;
+    }
+
+    @Override
+    public void requestPermissions(@NonNull Activity activity, int requestCode) {
+    }
+
+    @NonNull
+    @Override
+    public OperationDataFactory<LaunchAppOperationData> dataFactory() {
+        return new LaunchAppOperationDataFactory();
+
+    }
+
+    @NonNull
+    @Override
+    public PluginViewFragment<LaunchAppOperationData> view() {
+        return new LaunchAppPluginViewFragment();
+    }
+
+    @NonNull
+    @Override
+    public OperationLoader<LaunchAppOperationData> loader(@NonNull Context context) {
+        return new LaunchAppLoader(context);
+    }
+
+}
diff --git a/app/src/main/java/ryey/easer/plugins/operation/launch_app/LaunchAppPluginViewFragment.java b/app/src/main/java/ryey/easer/plugins/operation/launch_app/LaunchAppPluginViewFragment.java
new file mode 100644
index 00000000..9666d096
--- /dev/null
+++ b/app/src/main/java/ryey/easer/plugins/operation/launch_app/LaunchAppPluginViewFragment.java
@@ -0,0 +1,38 @@
+package ryey.easer.plugins.operation.launch_app;
+
+import android.os.Bundle;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.EditText;
+
+import ryey.easer.R;
+import ryey.easer.commons.plugindef.InvalidDataInputException;
+import ryey.easer.commons.plugindef.PluginViewFragment;
+import ryey.easer.commons.plugindef.ValidData;
+
+public class LaunchAppPluginViewFragment extends PluginViewFragment<LaunchAppOperationData> {
+    EditText et_app_package;
+
+    @NonNull
+    @Override
+    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.plugin_operation__launch_app, container, false);
+        et_app_package = view.findViewById(R.id.editText_app_package);
+        return view;
+    }
+
+    @Override
+    protected void _fill(@ValidData @NonNull LaunchAppOperationData data) {
+        et_app_package.setText(data.app_package);
+    }
+
+    @ValidData
+    @NonNull
+    @Override
+    public LaunchAppOperationData getData() throws InvalidDataInputException {
+        return new LaunchAppOperationData(et_app_package.getText().toString());
+    }
+}
diff --git a/app/src/main/java/ryey/easer/plugins/operation/volume/VolumeOpeartionPluginViewFragment.java b/app/src/main/java/ryey/easer/plugins/operation/volume/VolumeOpeartionPluginViewFragment.java
index 3b62c54c..0b055886 100644
--- a/app/src/main/java/ryey/easer/plugins/operation/volume/VolumeOpeartionPluginViewFragment.java
+++ b/app/src/main/java/ryey/easer/plugins/operation/volume/VolumeOpeartionPluginViewFragment.java
@@ -40,8 +40,10 @@
 
 public class VolumeOpeartionPluginViewFragment extends PluginViewFragment<VolumeOperationData> {
 
-    CheckBox checkBox_ring, checkBox_media, checkBox_alarm, checkBox_notification;
-    SeekBar seekBar_ring, seekBar_media, seekBar_alarm, seekBar_notification;
+    private static final int STREAM_BLUETOOTH = 6;
+    
+    CheckBox checkBox_ring, checkBox_media, checkBox_alarm, checkBox_notification, checkBox_bt;
+    SeekBar seekBar_ring, seekBar_media, seekBar_alarm, seekBar_notification, seekBar_bt;
 
     @NonNull
     @Override
@@ -95,6 +97,16 @@ public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
             }
         });
 
+        seekBar_bt = view.findViewById(R.id.seekBar_bt);
+        seekBar_bt.setMax(audioManager.getStreamMaxVolume(STREAM_BLUETOOTH));
+        checkBox_bt = view.findViewById(R.id.checkBox_bt);
+        checkBox_bt.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
+            @Override
+            public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
+                seekBar_bt.setVisibility(b? View.VISIBLE : View.GONE);
+            }
+        });
+
         return view;
     }
 
@@ -104,6 +116,7 @@ protected void _fill(@ValidData @NonNull VolumeOperationData data) {
         setVolumeVisual(checkBox_media, seekBar_media, data.vol_media);
         setVolumeVisual(checkBox_alarm, seekBar_alarm, data.vol_alarm);
         setVolumeVisual(checkBox_notification, seekBar_notification, data.vol_notification);
+        setVolumeVisual(checkBox_bt, seekBar_bt, data.vol_bt);
     }
 
     @ValidData
@@ -114,7 +127,8 @@ public VolumeOperationData getData() throws InvalidDataInputException {
         Integer vol_media = getVolume(seekBar_media);
         Integer vol_alarm = getVolume(seekBar_alarm);
         Integer vol_notification = getVolume(seekBar_notification);
-        return new VolumeOperationData(vol_ring, vol_media, vol_alarm, vol_notification);
+        Integer vol_bt = getVolume(seekBar_bt);
+        return new VolumeOperationData(vol_ring, vol_media, vol_alarm, vol_notification, vol_bt);
     }
 
     private static void setVolumeVisual(CheckBox checkBox, SeekBar seekBar, Integer value) {
diff --git a/app/src/main/java/ryey/easer/plugins/operation/volume/VolumeOperationData.java b/app/src/main/java/ryey/easer/plugins/operation/volume/VolumeOperationData.java
index b400259b..6c50a442 100644
--- a/app/src/main/java/ryey/easer/plugins/operation/volume/VolumeOperationData.java
+++ b/app/src/main/java/ryey/easer/plugins/operation/volume/VolumeOperationData.java
@@ -36,17 +36,20 @@ public class VolumeOperationData implements OperationData {
     private static final String K_VOL_MEDIA = "media";
     private static final String K_VOL_ALARM = "alarm";
     private static final String K_VOL_NOTIFICATION = "notification";
+    private static final String K_VOL_BT = "bluetooth";
 
     Integer vol_ring;
     Integer vol_media;
     Integer vol_alarm;
     Integer vol_notification;
+    Integer vol_bt;
 
-    public VolumeOperationData(Integer vol_ring, Integer vol_media, Integer vol_alarm, Integer vol_notification) {
+    public VolumeOperationData(Integer vol_ring, Integer vol_media, Integer vol_alarm, Integer vol_notification, Integer vol_bt) {
         this.vol_ring = vol_ring;
         this.vol_media = vol_media;
         this.vol_alarm = vol_alarm;
         this.vol_notification = vol_notification;
+        this.vol_bt = vol_bt;
     }
 
     VolumeOperationData(@NonNull String data, @NonNull C.Format format, int version) throws IllegalStorageDataException {
@@ -74,6 +77,7 @@ public void parse(@NonNull String data, @NonNull C.Format format, int version) t
                     vol_media = optInteger(jsonObject, K_VOL_MEDIA);
                     vol_alarm = optInteger(jsonObject, K_VOL_ALARM);
                     vol_notification = optInteger(jsonObject, K_VOL_NOTIFICATION);
+                    vol_bt = optInteger(jsonObject, K_VOL_BT);
                 } catch (JSONException e) {
                     throw new IllegalStorageDataException(e);
                 }
@@ -92,6 +96,7 @@ public String serialize(@NonNull C.Format format) {
                     writeNonNull(jsonObject, vol_media, K_VOL_MEDIA);
                     writeNonNull(jsonObject, vol_alarm, K_VOL_ALARM);
                     writeNonNull(jsonObject, vol_notification, K_VOL_NOTIFICATION);
+                    writeNonNull(jsonObject, vol_bt, K_VOL_BT);
                     res = jsonObject.toString();
                 } catch (JSONException e) {
                     throw new IllegalStateException(e);
@@ -114,6 +119,8 @@ public boolean equals(Object obj) {
             return false;
         if (!Utils.nullableEqual(vol_notification, ((VolumeOperationData) obj).vol_notification))
             return false;
+        if (!Utils.nullableEqual(vol_bt, ((VolumeOperationData) obj).vol_bt))
+            return false;
         return true;
     }
 
@@ -122,7 +129,8 @@ public boolean isValid() {
         return isNotNegative(vol_ring)
                 || isNotNegative(vol_media)
                 || isNotNegative(vol_alarm)
-                || isNotNegative(vol_notification);
+                || isNotNegative(vol_notification)
+                || isNotNegative(vol_bt);
     }
 
     @Override
@@ -136,6 +144,7 @@ public void writeToParcel(Parcel parcel, int i) {
         parcel.writeValue(vol_media);
         parcel.writeValue(vol_alarm);
         parcel.writeValue(vol_notification);
+        parcel.writeValue(vol_bt);
     }
 
     public static final Creator<VolumeOperationData> CREATOR
@@ -154,6 +163,7 @@ private VolumeOperationData(Parcel in) {
         vol_media = (Integer) in.readValue(Integer.class.getClassLoader());
         vol_alarm = (Integer) in.readValue(Integer.class.getClassLoader());
         vol_notification = (Integer) in.readValue(Integer.class.getClassLoader());
+        vol_bt = (Integer) in.readValue(Integer.class.getClassLoader());
     }
 
     private static boolean isNotNegative(@Nullable Integer value) {
diff --git a/app/src/main/java/ryey/easer/plugins/operation/volume/VolumeOperationDataFactory.java b/app/src/main/java/ryey/easer/plugins/operation/volume/VolumeOperationDataFactory.java
index 52a68975..53ff604e 100644
--- a/app/src/main/java/ryey/easer/plugins/operation/volume/VolumeOperationDataFactory.java
+++ b/app/src/main/java/ryey/easer/plugins/operation/volume/VolumeOperationDataFactory.java
@@ -37,7 +37,7 @@ public Class<VolumeOperationData> dataClass() {
     @NonNull
     @Override
     public VolumeOperationData dummyData() {
-        return new VolumeOperationData(1, 2, null, 0);
+        return new VolumeOperationData(1, 2, null, 0, null);
     }
 
     @ValidData
diff --git a/app/src/main/res/layout/plugin_operation__launch_app.xml b/app/src/main/res/layout/plugin_operation__launch_app.xml
new file mode 100644
index 00000000..b9866246
--- /dev/null
+++ b/app/src/main/res/layout/plugin_operation__launch_app.xml
@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="utf-8"?>
+<android.support.constraint.ConstraintLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <TextView
+        android:id="@+id/textView45"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="8dp"
+        android:layout_marginLeft="8dp"
+        android:layout_marginStart="8dp"
+        android:text="@string/op_launch_app_text_app"
+        app:layout_constraintBottom_toBottomOf="@+id/editText_app_package"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="@+id/editText_app_package" />
+
+    <EditText
+        android:id="@+id/editText_app_package"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginEnd="8dp"
+        android:layout_marginLeft="8dp"
+        android:layout_marginRight="8dp"
+        android:layout_marginStart="8dp"
+        android:layout_marginTop="8dp"
+        android:ems="10"
+        android:hint="@string/op_launch_app_text_package_name"
+        android:inputType="none"
+        android:singleLine="true"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toEndOf="@+id/textView45"
+        app:layout_constraintTop_toTopOf="parent" />
+</android.support.constraint.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/plugin_operation__volume.xml b/app/src/main/res/layout/plugin_operation__volume.xml
index fbc1da54..7279fdb6 100644
--- a/app/src/main/res/layout/plugin_operation__volume.xml
+++ b/app/src/main/res/layout/plugin_operation__volume.xml
@@ -3,7 +3,8 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
-    android:layout_height="match_parent">
+    android:layout_height="match_parent"
+    tools:layout_editor_absoluteY="81dp">
 
     <android.support.constraint.Guideline
         android:id="@+id/guideline13"
@@ -16,12 +17,12 @@
         android:id="@+id/checkBox_ring"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
+        android:layout_marginLeft="8dp"
         android:layout_marginStart="8dp"
         android:layout_marginTop="8dp"
         android:text="@string/o_volume_ring"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent"
-        android:layout_marginLeft="8dp" />
+        app:layout_constraintTop_toTopOf="parent" />
 
     <SeekBar
         android:id="@+id/seekBar_ring"
@@ -42,13 +43,13 @@
         android:id="@+id/checkBox_media"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
+        android:layout_marginLeft="8dp"
         android:layout_marginStart="8dp"
         android:layout_marginTop="8dp"
         android:checked="false"
         android:text="@string/o_volume_media"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@id/seekBar_ring"
-        android:layout_marginLeft="8dp" />
+        app:layout_constraintTop_toBottomOf="@id/seekBar_ring" />
 
     <SeekBar
         android:id="@+id/seekBar_media"
@@ -69,13 +70,13 @@
         android:id="@+id/checkBox_alarm"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
+        android:layout_marginLeft="8dp"
         android:layout_marginStart="8dp"
         android:layout_marginTop="8dp"
         android:checked="false"
         android:text="@string/o_volume_alarm"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@id/seekBar_media"
-        android:layout_marginLeft="8dp" />
+        app:layout_constraintTop_toBottomOf="@id/seekBar_media" />
 
     <SeekBar
         android:id="@+id/seekBar_alarm"
@@ -96,13 +97,13 @@
         android:id="@+id/checkBox_notification"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
+        android:layout_marginLeft="8dp"
         android:layout_marginStart="8dp"
         android:layout_marginTop="8dp"
         android:checked="false"
         android:text="@string/o_volume_notification"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@id/seekBar_alarm"
-        android:layout_marginLeft="8dp" />
+        app:layout_constraintTop_toBottomOf="@id/seekBar_alarm" />
 
     <SeekBar
         android:id="@+id/seekBar_notification"
@@ -119,4 +120,32 @@
         app:layout_constraintStart_toStartOf="@+id/guideline13"
         app:layout_constraintTop_toBottomOf="@+id/checkBox_notification" />
 
+    <CheckBox
+        android:id="@+id/checkBox_bt"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginLeft="8dp"
+        android:layout_marginStart="8dp"
+        android:layout_marginTop="8dp"
+        android:text="@string/o_volume_bluetooth"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/seekBar_notification" />
+
+    <SeekBar
+        android:id="@+id/seekBar_bt"
+        style="@style/Widget.AppCompat.SeekBar.Discrete"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginEnd="8dp"
+        android:layout_marginLeft="8dp"
+        android:layout_marginRight="8dp"
+        android:layout_marginStart="8dp"
+        android:layout_marginTop="8dp"
+        android:max="10"
+        android:progress="0"
+        android:visibility="gone"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="@+id/guideline13"
+        app:layout_constraintTop_toBottomOf="@+id/checkBox_bt" />
+
 </android.support.constraint.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/values-zh/plugins.xml b/app/src/main/res/values-zh/plugins.xml
index b9a1db7a..473f8836 100644
--- a/app/src/main/res/values-zh/plugins.xml
+++ b/app/src/main/res/values-zh/plugins.xml
@@ -155,5 +155,10 @@
     <string name="o_volume_media">媒體/音樂</string>
     <string name="o_volume_alarm">鬧鈴</string>
     <string name="o_volume_notification">通知</string>
+    <string name="o_volume_bluetooth">藍牙</string>
+
+    <string name="op_launch_app">啓動程序</string>
+    <string name="op_launch_app_text_app">程序</string>
+    <string name="op_launch_app_text_package_name">包名</string>
 
 </resources>
diff --git a/app/src/main/res/values/plugins.xml b/app/src/main/res/values/plugins.xml
index 0d187865..9a3e1df6 100644
--- a/app/src/main/res/values/plugins.xml
+++ b/app/src/main/res/values/plugins.xml
@@ -163,5 +163,10 @@
     <string name="o_volume_media">Media</string>
     <string name="o_volume_alarm">Alarm</string>
     <string name="o_volume_notification">Notification</string>
+    <string name="o_volume_bluetooth">Bluetooth</string>
+
+    <string name="op_launch_app">Launch App</string>
+    <string name="op_launch_app_text_app">App</string>
+    <string name="op_launch_app_text_package_name">Package Name</string>
 
 </resources>
\ No newline at end of file
diff --git a/utils/new_operation.py b/utils/new_operation.py
index 5512d3aa..3f8984b0 100755
--- a/utils/new_operation.py
+++ b/utils/new_operation.py
@@ -16,12 +16,17 @@
 import os.path
 import templates
 
-template_map = {
-        'plugin': templates.tmpl_operation_plugin,
-        'data': templates.tmpl_operation_data,
-        'data_factory': templates.tmpl_operation_data_factory,
-        'view_fragment': templates.tmpl_plugin_view_fragment,
-        'loader': templates.tmpl_operation_loader,
+template_maps = {
+        'main': {
+            'plugin': templates.tmpl_operation_plugin,
+            'data': templates.tmpl_operation_data,
+            'data_factory': templates.tmpl_operation_data_factory,
+            'view_fragment': templates.tmpl_plugin_view_fragment,
+            'loader': templates.tmpl_operation_loader,
+            },
+        'androidTest': {
+            'androidTest$data': templates.tmpl_operation_androidTest_data,
+            },
         }
 
 def new_operation(cname, identifier):
@@ -33,16 +38,18 @@ def new_operation(cname, identifier):
     pdef['data_factory'] = "{}OperationDataFactory".format(cname)
     pdef['view_fragment'] = "{}PluginViewFragment".format(cname)
     pdef['loader'] = "{}Loader".format(cname)
-    dest = '../app/src/main/java/ryey/easer/plugins/operation'
-    dest = "{}/{}".format(dest, identifier)
-    if not os.path.isfile(dest):
-        os.mkdir(dest)
-    for k in template_map:
-        class_content = template_map[k].format_map(pdef)
-        with open("{}/{}.java".format(dest, pdef[k]), 'w') as fd:
-            fd.write(templates.tmpl_copyright)
-            fd.write('\n')
-            fd.write(class_content)
+    pdef['androidTest$data'] = "{}OperationDataTest".format(cname)
+    for t, template_map in template_maps.items():
+        dest = "app/src/{}/java/ryey/easer/plugins/operation/{}".format(t, identifier)
+        dest = "utils/{}/{}".format(t, identifier)
+        if not os.path.isfile(dest):
+            os.mkdir(dest)
+        for k in template_map:
+            class_content = template_map[k].format_map(pdef)
+            with open("{}/{}.java".format(dest, pdef[k]), 'w') as fd:
+                fd.write(templates.tmpl_copyright)
+                fd.write('\n')
+                fd.write(class_content)
 
 if __name__ == '__main__':
     parser = argparse.ArgumentParser()
diff --git a/utils/templates.py b/utils/templates.py
index 6835bb1d..e69bbb64 100644
--- a/utils/templates.py
+++ b/utils/templates.py
@@ -254,3 +254,26 @@ class {data_factory} implements OperationDataFactory<{data}> {{
 }}
 '''
 
+tmpl_operation_androidTest_data = '''package {package};
+
+import android.os.Parcel;
+
+import org.junit.Test;
+
+import ryey.easer.plugins.TestHelper;
+
+import static org.junit.Assert.assertEquals;
+
+public class {androidTest$data} {{
+
+    @Test
+    public void testParcel() {{
+        {data} dummyData = new {data_factory}().dummyData();
+        Parcel parcel = TestHelper.writeToParcel(dummyData);
+        {data} parceledData = {data}.CREATOR.createFromParcel(parcel);
+        assertEquals(dummyData, parceledData);
+    }}
+
+}}
+'''
+