Fix issue #10 properly

* Also update build tools to 25.0.2

build.gradle

@@ -20,7 +20,7 @@ allprojects {
 
 ext {
     sdk = 25
-    buildTools = "24.0.3"
+    buildTools = "25.0.2"
     minSdk = 10
     libraryVersion = "1.0.3"
     supportVersion = "25.1.0"

camerafragment/src/main/java/com/github/florent37/camerafragment/internal/controller/impl/Camera1Controller.java

@@ -113,7 +113,7 @@ public class Camera1Controller implements CameraController<Integer>,
         final Integer frontCameraId = cameraManager.getFaceFrontCameraId();
         final Integer currentCameraId = cameraManager.getCurrentCameraId();
 
-        if (cameraFace == Configuration.CAMERA_FACE_REAR && backCameraId != null && !backCameraId.equals(currentCameraId)) {
+        if (cameraFace == Configuration.CAMERA_FACE_REAR && backCameraId != null) {
             setCurrentCameraId(backCameraId);
             cameraManager.closeCamera(this);
         } else if (frontCameraId != null && !frontCameraId.equals(currentCameraId)) {