fix(android): Fix Objects.equals that is only available after API 19 (#…

…2635)

android/src/main/java/com/google/android/cameraview/Camera1.java

@@ -34,12 +34,13 @@
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
-import java.util.Objects;
 import java.util.Properties;
 import java.util.Set;
 import java.util.SortedSet;
 import java.util.concurrent.atomic.AtomicBoolean;
 
+import org.reactnative.camera.utils.ObjectUtils;
+
 
 @SuppressWarnings("deprecation")
 class Camera1 extends CameraViewImpl implements MediaRecorder.OnInfoListener,
@@ -342,13 +343,13 @@ int getFacing() {
     @Override
     void setCameraId(String id) {
 
-        if(!Objects.equals(_mCameraId, id)){
+        if(!ObjectUtils.equals(_mCameraId, id)){
             _mCameraId = id;
 
             // only update if our camera ID actually changes
             // from what we currently have.
             // Passing null will always yield true
-            if(!Objects.equals(_mCameraId, String.valueOf(mCameraId))){
+            if(!ObjectUtils.equals(_mCameraId, String.valueOf(mCameraId))){
                 // this will call chooseCamera
                 mBgHandler.post(new Runnable() {
                     @Override

android/src/main/java/com/google/android/cameraview/Camera2.java

@@ -53,11 +53,14 @@
 import java.util.ArrayList;
 import java.util.HashSet;
 import java.util.List;
-import java.util.Objects;
 import java.util.Properties;
 import java.util.Set;
 import java.util.SortedSet;
 
+import org.reactnative.camera.utils.ObjectUtils;
+
+
+
 @SuppressWarnings("MissingPermission")
 @TargetApi(21)
 class Camera2 extends CameraViewImpl implements MediaRecorder.OnInfoListener, MediaRecorder.OnErrorListener {
@@ -366,13 +369,13 @@ int getFacing() {
 
     @Override
     void setCameraId(String id) {
-        if(!Objects.equals(_mCameraId, id)){
+        if(!ObjectUtils.equals(_mCameraId, id)){
             _mCameraId = id;
 
             // only update if our camera ID actually changes
             // from what we currently have.
             // Passing null will always yield true
-            if(!Objects.equals(_mCameraId, mCameraId)){
+            if(!ObjectUtils.equals(_mCameraId, mCameraId)){
                 // this will call chooseCameraIdByFacing
                 if (isCameraOpened()) {
                     stop();

android/src/main/java/org/reactnative/camera/utils/ObjectUtils.java

@@ -0,0 +1,15 @@
+package org.reactnative.camera.utils;
+
+
+public class ObjectUtils {
+
+    /*
+    * Replacement for Objects.equals that is only available after Android API 19
+    */
+    public static boolean equals(Object o1, Object o2) {
+        if (o1 == null && o2 == null) return true;
+        if (o1 == null) return false;
+        return o1.equals(o2);
+    }
+
+}