Merge pull request #20 from rt2zz/master

Add capturePictureToDisk method - transitional

Camera.ios.js

@@ -73,7 +73,12 @@ var Camera = React.createClass({
 
   takePicture: function(cb) {
     NativeModules.CameraManager.takePicture(cb);
+  },
+
+  capturePictureToDisk: function(cb) {
+    NativeModules.CameraManager.capturePictureToDisk(cb)
   }
+
 });
 
 var RCTCamera = createReactIOSNativeComponentClass({

RCTCameraManager.h

@@ -19,5 +19,6 @@
 - (void)changeOrientation:(NSInteger)orientation;
 - (AVCaptureDevice *)deviceWithMediaType:(NSString *)mediaType preferringPosition:(AVCaptureDevicePosition)position;
 - (void)takePicture:(RCTResponseSenderBlock)callback;
+- (void)capturePictureToDisk:(RCTResponseSenderBlock)callback;
 
 @end

RCTCameraManager.m

@@ -184,6 +184,39 @@ RCT_EXPORT_METHOD(takePicture:(RCTResponseSenderBlock)callback) {
     }];
 }
 
+RCT_EXPORT_METHOD(capturePictureToDisk:(RCTResponseSenderBlock)callback) {
+    [[self.stillImageOutput connectionWithMediaType:AVMediaTypeVideo] setVideoOrientation:self.previewLayer.connection.videoOrientation];
+    [self.stillImageOutput captureStillImageAsynchronouslyFromConnection:[self.stillImageOutput connectionWithMediaType:AVMediaTypeVideo] completionHandler:^(CMSampleBufferRef imageDataSampleBuffer, NSError *error) {
+
+        if (imageDataSampleBuffer)
+        {
+            NSData *imageData = [AVCaptureStillImageOutput jpegStillImageNSDataRepresentation:imageDataSampleBuffer];
+            UIImage *image = [UIImage imageWithData:imageData];
+            UIImage *rotatedImage = [image resizedImage:CGSizeMake(image.size.width, image.size.height) interpolationQuality:kCGInterpolationDefault];
+            NSString *uuid = [[NSUUID UUID] UUIDString];
+            NSString *fullPath = [self saveImage:rotatedImage withName:uuid];
+
+            callback(@[[NSNull null], fullPath]);
+        }
+        else {
+            callback(@[RCTMakeError(error.description, nil, nil)]);
+        }
+    }];
+}
+
+- (NSString *)saveImage:(UIImage *)image withName:(NSString *)name {
+    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
+    NSString *documentsDirectory = [paths firstObject];
+
+    NSData *data = UIImageJPEGRepresentation(image, 1.0);
+    NSFileManager *fileManager = [NSFileManager defaultManager];
+    NSString *fullPath = [documentsDirectory stringByAppendingPathComponent:name];
+    NSLog(@"writing path %@", fullPath);
+
+    [fileManager createFileAtPath:fullPath contents:data attributes:nil];
+    return fullPath;
+}
+
 - (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputMetadataObjects:(NSArray *)metadataObjects fromConnection:(AVCaptureConnection *)connection {
 
     NSArray *barcodeTypes = @[