Fixed back/front camera init

app/src/main/AndroidManifest.xml

@@ -24,6 +24,12 @@
             android:name="com.github.florent37.camerafragment.sample.MainActivityCustoms"
             android:screenOrientation="portrait"
             android:theme="@style/ThemeFullscreen" >
+        </activity>
+
+        <activity
+            android:name="com.github.florent37.camerafragment.sample.MainActivity"
+            android:screenOrientation="portrait"
+            android:theme="@style/ThemeFullscreen" >
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 

app/src/main/java/com/github/florent37/camerafragment/sample/MainActivity.java

@@ -146,7 +146,8 @@ public class MainActivity extends AppCompatActivity {
         addCameraButton.setVisibility(View.GONE);
         cameraLayout.setVisibility(View.VISIBLE);
 
-        final CameraFragment cameraFragment = CameraFragment.newInstance(new Configuration.Builder().build());
+        final CameraFragment cameraFragment = CameraFragment.newInstance(new Configuration.Builder()
+                .setCamera(Configuration.CAMERA_FACE_FRONT).build());
         getSupportFragmentManager().beginTransaction()
                 .replace(R.id.content, cameraFragment, FRAGMENT_TAG)
                 .commit();

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

@@ -6,8 +6,6 @@ import android.support.annotation.Nullable;
 import android.util.Log;
 import android.view.SurfaceHolder;
 
-import java.io.File;
-
 import com.github.florent37.camerafragment.configuration.Configuration;
 import com.github.florent37.camerafragment.configuration.ConfigurationProvider;
 import com.github.florent37.camerafragment.internal.controller.CameraController;
@@ -23,6 +21,8 @@ import com.github.florent37.camerafragment.internal.utils.CameraHelper;
 import com.github.florent37.camerafragment.internal.utils.Size;
 import com.github.florent37.camerafragment.listeners.CameraFragmentResultListener;
 
+import java.io.File;
+
 /*
  * Created by memfis on 7/7/16.
  */
@@ -101,14 +101,15 @@ public class Camera1Controller implements CameraController<Integer>,
     public void switchCamera(@Configuration.CameraFace final int cameraFace) {
         final Integer backCameraId = cameraManager.getFaceBackCameraId();
         final Integer frontCameraId = cameraManager.getFaceFrontCameraId();
+        final Integer currentCameraId = cameraManager.getCurrentCameraId();
 
-        if(cameraManager.getCurrentCameraId().equals(frontCameraId)){
+        if (cameraFace == Configuration.CAMERA_FACE_REAR && backCameraId != null && !backCameraId.equals(currentCameraId)) {
             setCurrentCameraId(backCameraId);
-        } else {
+            cameraManager.closeCamera(this);
+        } else if (frontCameraId != null && !frontCameraId.equals(currentCameraId)) {
             setCurrentCameraId(frontCameraId);
+            cameraManager.closeCamera(this);
         }
-
-        cameraManager.closeCamera(this);
     }
 
     @Override

camerafragment/src/main/java/com/github/florent37/camerafragment/internal/controller/impl/Camera2Controller.java

@@ -8,8 +8,6 @@ import android.support.annotation.Nullable;
 import android.util.Log;
 import android.view.TextureView;
 
-import java.io.File;
-
 import com.github.florent37.camerafragment.configuration.Configuration;
 import com.github.florent37.camerafragment.configuration.ConfigurationProvider;
 import com.github.florent37.camerafragment.internal.controller.CameraController;
@@ -25,6 +23,8 @@ import com.github.florent37.camerafragment.internal.utils.CameraHelper;
 import com.github.florent37.camerafragment.internal.utils.Size;
 import com.github.florent37.camerafragment.listeners.CameraFragmentResultListener;
 
+import java.io.File;
+
 /*
  * Created by memfis on 7/6/16.
  */
@@ -96,10 +96,18 @@ public class Camera2Controller implements CameraController<String>,
 
     @Override
     public void switchCamera(final @Configuration.CameraFace int cameraFace) {
-        setCurrentCameraId(camera2Manager.getCurrentCameraId().equals(camera2Manager.getFaceFrontCameraId()) ?
+        final String currentCameraId = camera2Manager.getCurrentCameraId();
-                camera2Manager.getFaceBackCameraId() : camera2Manager.getFaceFrontCameraId());
+        final String faceFrontCameraId = camera2Manager.getFaceFrontCameraId();
+        final String faceBackCameraId = camera2Manager.getFaceBackCameraId();
+
+        if (cameraFace == Configuration.CAMERA_FACE_REAR && faceBackCameraId != null && !faceBackCameraId.equals(currentCameraId)) {
+            setCurrentCameraId(faceBackCameraId);
+            camera2Manager.closeCamera(this);
+        } else if (faceFrontCameraId != null && !faceFrontCameraId.equals(currentCameraId)) {
+            setCurrentCameraId(faceFrontCameraId);
+            camera2Manager.closeCamera(this);
+        }
 
-        camera2Manager.closeCamera(this);
     }
 
     private void setCurrentCameraId(String currentCameraId){