add QuickTile support (#29)

app/src/main/AndroidManifest.xml

@@ -23,6 +23,15 @@
                 <action android:name="android.net.VpnService"/>
             </intent-filter>
         </service>
+        <service
+            android:name=".service.DaedalusTileService"
+            android:label="@string/app_name"
+            android:icon="@drawable/ic_security"
+            android:permission="android.permission.BIND_QUICK_SETTINGS_TILE">
+            <intent-filter>
+                <action android:name="android.service.quicksettings.action.QS_TILE" />
+            </intent-filter>
+        </service>
 
         <receiver android:name=".receiver.BootBroadcastReceiver">
             <intent-filter>

app/src/main/java/org/itxtech/daedalus/service/DaedalusTileService.java

@@ -0,0 +1,48 @@
+package org.itxtech.daedalus.service;
+
+import android.content.Intent;
+import android.os.Build;
+import android.service.quicksettings.Tile;
+import android.service.quicksettings.TileService;
+import android.support.annotation.RequiresApi;
+
+import org.itxtech.daedalus.Daedalus;
+import org.itxtech.daedalus.activity.MainActivity;
+
+/**
+ * Quick Tile Service
+ * Created by pcqpcq on 17/7/28.
+ */
+@RequiresApi(api = Build.VERSION_CODES.N)
+public class DaedalusTileService extends TileService {
+
+    @Override
+    public void onClick() {
+        Daedalus appContext = Daedalus.getInstance();
+        boolean activate = appContext.isServiceActivated();
+
+        Intent intent = new Intent(appContext, MainActivity.class)
+                .setAction(Intent.ACTION_VIEW)
+                .putExtra(MainActivity.LAUNCH_ACTION, activate ? MainActivity.LAUNCH_ACTION_DEACTIVATE : MainActivity.LAUNCH_ACTION_ACTIVATE);
+
+        startActivityAndCollapse(intent);
+    }
+
+    @Override
+    public void onTileAdded() {
+        updateTile();
+    }
+
+    @Override
+    public void onStartListening() {
+        updateTile();
+    }
+
+    private void updateTile() {
+        boolean activate = Daedalus.getInstance().isServiceActivated();
+
+        Tile tile = getQsTile();
+        tile.setState(activate ? Tile.STATE_ACTIVE : Tile.STATE_INACTIVE);
+        tile.updateTile();
+    }
+}