Add DeviceMotion gravity data

README.md

@@ -72,6 +72,20 @@ Magnetometer.startMagnetometerUpdates(); // you'll start getting AccelerationDat
 Magnetometer.stopMagnetometerUpdates();
 ```
 
+### Filtered DeviceMotion data (only gravity)
+```js
+DeviceMotion.setDeviceMotionUpdateInterval(0.1); // in seconds
+DeviceEventEmitter.addListener('MotionData', function (data) {
+  /**
+  * data.gravity.x
+  * data.gravity.y
+  * data.gravity.z
+  **/
+});
+DeviceMotion.startDeviceMotionUpdates(); // you'll start getting MotionData events above
+DeviceMotion.stopDeviceMotionUpdates();
+```
+
 # Example
 
 This repo contains an example react-native app to help get you started. [Source code here.](https://github.com/pwmckenna/react-native-motion-manager/tree/master/Example/MotionExample)

RNMotionManager.xcodeproj/project.pbxproj

@@ -11,6 +11,7 @@
 		BB9CC8081AE0A5FE008A1D08 /* Gyroscope.m in Sources */ = {isa = PBXBuildFile; fileRef = BB9CC8071AE0A5FE008A1D08 /* Gyroscope.m */; };
 		BB9CC80E1AE0A707008A1D08 /* Accelerometer.m in Sources */ = {isa = PBXBuildFile; fileRef = BB9CC80B1AE0A707008A1D08 /* Accelerometer.m */; };
 		BB9CC80F1AE0A707008A1D08 /* Magnetometer.m in Sources */ = {isa = PBXBuildFile; fileRef = BB9CC80D1AE0A707008A1D08 /* Magnetometer.m */; };
+		FF4578261D60724200F5D682 /* DeviceMotion.m in Sources */ = {isa = PBXBuildFile; fileRef = FF4578241D60724200F5D682 /* DeviceMotion.m */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -45,6 +46,8 @@
 		BB9CC80B1AE0A707008A1D08 /* Accelerometer.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = Accelerometer.m; sourceTree = "<group>"; };
 		BB9CC80C1AE0A707008A1D08 /* Magnetometer.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Magnetometer.h; sourceTree = "<group>"; };
 		BB9CC80D1AE0A707008A1D08 /* Magnetometer.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = Magnetometer.m; sourceTree = "<group>"; };
+		FF4578241D60724200F5D682 /* DeviceMotion.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = DeviceMotion.m; sourceTree = "<group>"; };
+		FF4578251D60724200F5D682 /* DeviceMotion.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = DeviceMotion.h; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -87,6 +90,8 @@
 		BB9CC7EF1AE0A2EB008A1D08 /* RNMotionManager */ = {
 			isa = PBXGroup;
 			children = (
+				FF4578241D60724200F5D682 /* DeviceMotion.m */,
+				FF4578251D60724200F5D682 /* DeviceMotion.h */,
 				BB9CC8071AE0A5FE008A1D08 /* Gyroscope.m */,
 				BB9CC8091AE0A614008A1D08 /* Gyroscope.h */,
 				BB9CC80A1AE0A707008A1D08 /* Accelerometer.h */,
@@ -204,6 +209,7 @@
 				BB9CC80E1AE0A707008A1D08 /* Accelerometer.m in Sources */,
 				BB9CC80F1AE0A707008A1D08 /* Magnetometer.m in Sources */,
 				BB9CC8081AE0A5FE008A1D08 /* Gyroscope.m in Sources */,
+				FF4578261D60724200F5D682 /* DeviceMotion.m in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};

RNMotionManager/DeviceMotion.h

@@ -0,0 +1,19 @@
+//
+//  DeviceMotion.h
+//
+//  Created by Tuan PM.
+//
+
+#import "RCTBridgeModule.h"
+#import <CoreMotion/CoreMotion.h>
+
+@interface DeviceMotion : NSObject <RCTBridgeModule> {
+    CMMotionManager *_motionManager;
+}
+- (void) setDeviceMotionUpdateInterval:(double) interval;
+- (void) getDeviceMotionUpdateInterval:(RCTResponseSenderBlock) cb;
+- (void) getDeviceMotionData:(RCTResponseSenderBlock) cb;
+- (void) startDeviceMotionUpdates;
+- (void) stopDeviceMotionUpdates;
+
+@end

RNMotionManager/DeviceMotion.m

@@ -0,0 +1,101 @@
+//
+//  DeviceMotion.m
+//
+//  Created by Tuan PM.
+//
+
+#import "RCTBridge.h"
+#import "RCTEventDispatcher.h"
+#import "DeviceMotion.h"
+
+@implementation DeviceMotion
+
+@synthesize bridge = _bridge;
+
+RCT_EXPORT_MODULE();
+
+- (id) init {
+    self = [super init];
+    NSLog(@"DeviceMotion");
+
+    if (self) {
+        self->_motionManager = [[CMMotionManager alloc] init];
+        //Magnetometer
+        if([self->_motionManager isDeviceMotionAvailable])
+        {
+            NSLog(@"deviceMotionAvailable available");
+            /* Start the Magnetometer if it is not active already */
+            if([self->_motionManager isDeviceMotionActive] == NO)
+            {
+                NSLog(@"DeviceMotion active");
+            } else {
+                NSLog(@"DeviceMotion not active");
+            }
+        }
+        else
+        {
+            NSLog(@"DeviceMotion not Available!");
+        }
+    }
+    return self;
+}
+
+RCT_EXPORT_METHOD(setDeviceMotionUpdateInterval:(double) interval) {
+    NSLog(@"setDeviceMotionUpdateInterval: %f", interval);
+
+    [self->_motionManager setDeviceMotionUpdateInterval:interval];
+}
+
+RCT_EXPORT_METHOD(getDeviceMotionUpdateInterval:(RCTResponseSenderBlock) cb) {
+    double interval = self->_motionManager.deviceMotionUpdateInterval;
+    NSLog(@"getDeviceMotionUpdateInterval: %f", interval);
+    cb(@[[NSNull null], [NSNumber numberWithDouble:interval]]);
+}
+
+RCT_EXPORT_METHOD(getDeviceMotionData:(RCTResponseSenderBlock) cb) {
+    double x = self->_motionManager.deviceMotion.gravity.x;
+    double y = self->_motionManager.deviceMotion.gravity.y;
+    double z = self->_motionManager.deviceMotion.gravity.z;
+
+    NSLog(@"getDeviceMotionData: %f, %f, %f", x, y, z);
+
+    cb(@[[NSNull null], @{
+             @"gravity": @{
+                     @"x" : [NSNumber numberWithDouble:x],
+                     @"y" : [NSNumber numberWithDouble:y],
+                     @"z" : [NSNumber numberWithDouble:z]
+                     }
+             }]
+       );
+}
+
+RCT_EXPORT_METHOD(startDeviceMotionUpdates) {
+    NSLog(@"startMagnetometerUpdates");
+    [self->_motionManager startDeviceMotionUpdates];
+
+    /* Receive the ccelerometer data on this block */
+    [self->_motionManager startDeviceMotionUpdatesToQueue:[NSOperationQueue mainQueue]
+                                              withHandler:^(CMDeviceMotion *motionData, NSError *error)
+     {
+         double x = motionData.gravity.x;
+         double y = motionData.gravity.y;
+         double z = motionData.gravity.z;
+         NSLog(@"startDeviceMotionUpdates: %f, %f, %f", x, y, z);
+
+         [self.bridge.eventDispatcher sendDeviceEventWithName:@"MotionData" body:@{
+                                                                                         @"gravity": @{
+                                                                                                 @"x" : [NSNumber numberWithDouble:x],
+                                                                                                 @"y" : [NSNumber numberWithDouble:y],
+                                                                                                 @"z" : [NSNumber numberWithDouble:z]
+                                                                                                 }
+                                                                                         }];
+     }];
+
+}
+
+RCT_EXPORT_METHOD(stopDeviceMotionUpdates) {
+    NSLog(@"stopDeviceMotionUpdates");
+    [self->_motionManager stopDeviceMotionUpdates];
+}
+
+@end