camera start and toggle async for no lag

camerakit/src/main/java/com/flurgle/camerakit/CameraView.java

@@ -149,7 +149,12 @@ public class CameraView extends FrameLayout {
     public void start() {
         int permissionCheck = ContextCompat.checkSelfPermission(getContext(), Manifest.permission.CAMERA);
         if (permissionCheck == PackageManager.PERMISSION_GRANTED) {
+            new Thread(new Runnable() {
+                @Override
+                public void run() {
                     mCameraImpl.start();
+                }
+            }).start();
         } else {
             requestCameraPermission();
         }
@@ -159,10 +164,16 @@ public class CameraView extends FrameLayout {
         mCameraImpl.stop();
     }
 
-    public void setFacing(@Facing int facing) {
+    public void setFacing(@Facing final int facing) {
         this.mFacing = facing;
+
+        new Thread(new Runnable() {
+            @Override
+            public void run() {
                 mCameraImpl.setFacing(facing);
             }
+        }).start();
+    }
 
     public void setFlash(@Flash int flash) {
         this.mFlash = flash;