feat(android): Added pause and resume recording (#2911)

* Added pause and resume recording functionality for android version 24 onwards

* Added pause and resume recording functions to Camera1.java

Co-authored-by: Pradeep Asundi <pradeep@asundi.in>

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

@@ -852,6 +852,16 @@ class Camera1 extends CameraViewImpl implements MediaRecorder.OnInfoListener,
         }
     }
 
+    @Override
+    void pauseRecording() {
+        pauseMediaRecorder();
+    }
+
+    @Override
+    void resumeRecording() {
+        resumeMediaRecorder();
+    }
+
     @Override
     int getCameraOrientation() {
         return mCameraInfo.orientation;
@@ -1569,6 +1579,18 @@ class Camera1 extends CameraViewImpl implements MediaRecorder.OnInfoListener,
         }
     }
 
+    private void pauseMediaRecorder() {
+        if (Build.VERSION.SDK_INT >= 24) {
+            mMediaRecorder.pause();
+        }
+    }
+
+    private void resumeMediaRecorder() {
+        if (Build.VERSION.SDK_INT >= 24) {
+            mMediaRecorder.resume();
+        }
+    }
+
     @Override
     public ArrayList<int[]> getSupportedPreviewFpsRange() {
       return (ArrayList<int[]>) mCameraParameters.getSupportedPreviewFpsRange();

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

@@ -44,6 +44,7 @@ import android.util.SparseIntArray;
 import android.view.Surface;
 import android.os.Handler;
 import android.os.Looper;
+import android.os.Build;
 
 import com.facebook.react.bridge.ReadableMap;
 
@@ -619,6 +620,16 @@ class Camera2 extends CameraViewImpl implements MediaRecorder.OnInfoListener, Me
         }
     }
 
+    @Override
+    void pauseRecording() {
+        pauseMediaRecorder();
+    }
+
+    @Override
+    void resumeRecording() {
+        resumeMediaRecorder();
+    }
+
     @Override
     public void setFocusDepth(float value) {
         if (mFocusDepth == value) {
@@ -1428,6 +1439,18 @@ class Camera2 extends CameraViewImpl implements MediaRecorder.OnInfoListener, Me
         mVideoPath = null;
     }
 
+    private void pauseMediaRecorder() {
+        if (Build.VERSION.SDK_INT >= 24) {
+            mMediaRecorder.pause();
+        }
+    }
+
+    private void resumeMediaRecorder() {
+        if (Build.VERSION.SDK_INT >= 24) {
+            mMediaRecorder.resume();
+        }
+    }
+
     /**
      * Unlocks the auto-focus and restart camera preview. This is supposed to be called after
      * capturing a still picture.

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

@@ -635,6 +635,14 @@ public class CameraView extends FrameLayout {
         mImpl.stopRecording();
     }
 
+    public void pauseRecording() {
+        mImpl.pauseRecording();
+    }
+
+    public void resumeRecording() {
+        mImpl.resumeRecording();
+    }
+
     public void resumePreview() {
         mImpl.resumePreview();
     }

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

@@ -105,6 +105,10 @@ abstract class CameraViewImpl {
 
     abstract void stopRecording();
 
+    abstract void pauseRecording();
+
+    abstract void resumeRecording();
+
     abstract int getCameraOrientation();
 
     abstract void setDisplayOrientation(int displayOrientation);

android/src/main/java/org/reactnative/camera/CameraModule.java

@@ -324,6 +324,48 @@ public class CameraModule extends ReactContextBaseJavaModule {
       });
   }
 
+  @ReactMethod
+  public void pauseRecording(final int viewTag) {
+    final ReactApplicationContext context = getReactApplicationContext();
+    UIManagerModule uiManager = context.getNativeModule(UIManagerModule.class);
+    uiManager.addUIBlock(new UIBlock() {
+      @Override
+      public void execute(NativeViewHierarchyManager nativeViewHierarchyManager) {
+          final RNCameraView cameraView;
+
+          try {
+              cameraView = (RNCameraView) nativeViewHierarchyManager.resolveView(viewTag);
+              if (cameraView.isCameraOpened()) {
+                  cameraView.pauseRecording();
+              }
+          } catch (Exception e) {
+              e.printStackTrace();
+          }
+      }
+    });
+  }
+
+  @ReactMethod
+  public void resumeRecording(final int viewTag) {
+    final ReactApplicationContext context = getReactApplicationContext();
+    UIManagerModule uiManager = context.getNativeModule(UIManagerModule.class);
+    uiManager.addUIBlock(new UIBlock() {
+      @Override
+      public void execute(NativeViewHierarchyManager nativeViewHierarchyManager) {
+          final RNCameraView cameraView;
+
+          try {
+              cameraView = (RNCameraView) nativeViewHierarchyManager.resolveView(viewTag);
+              if (cameraView.isCameraOpened()) {
+                  cameraView.resumeRecording();
+              }
+          } catch (Exception e) {
+              e.printStackTrace();
+          }
+      }
+    });
+  }
+
   @ReactMethod
   public void getSupportedRatios(final int viewTag, final Promise promise) {
       final ReactApplicationContext context = getReactApplicationContext();

src/RNCamera.js

@@ -624,6 +624,14 @@ export default class Camera extends React.Component<PropsType, StateType> {
     CameraManager.stopRecording(this._cameraHandle);
   }
 
+  pauseRecording() {
+    CameraManager.pauseRecording(this._cameraHandle);
+  }
+
+  resumeRecording() {
+    CameraManager.resumeRecording(this._cameraHandle);
+  }
+
   pausePreview() {
     CameraManager.pausePreview(this._cameraHandle);
   }