updated readme

README.md

@@ -27,6 +27,7 @@ A React Native bridge module for interacting with [Apple HealthKit] data.
       * [getWeightSamples](#getweightsamples)
       * [saveWeight](#saveweight)
       * [getLatestHeight](#getlatestheight)
+	  * [getHeightSamples](#getheightsamples)
       * [saveHeight](#saveheight)
       * [getLatestBmi](#getlatestbmi)
       * [saveBmi](#savebmi)
@@ -363,6 +364,39 @@ AppleHealthKit.getLatestHeight(null, (err: string, height: number) => {
 
 ___
 
+#### **`getHeightSamples`**
+query for height samples. the options object is used to setup a query to retrieve relevant samples.
+```javascript
+let options = {
+    unit: 'inch',										// optional; default 'inch'
+    startDate: (new Date(2016,4,27)).toISOString(),		// required
+	endDate: (new Date()).toISOString(),				// optional; default now
+    ascending: false,									// optional; default false
+    limit:10,											// optional; default no limit
+};
+```
+
+the callback function will be called with a `samples` array containing objects with *value*, *startDate*, and *endDate* fields
+```javascript
+// samples is array of objects
+[
+	{value: 74.02, startDate: '2016-06-29T17:55:00.000-0400', endDate: '2016-06-29T17:55:00.000-0400' },
+	{value: 74, startDate: '2016-03-12T13:22:00.000-0400', endDate: '2016-03-12T13:22:00.000-0400' },
+	...
+]
+```
+
+```javascript
+AppleHealthKit.getHeightSamples(options, (err: Object, samples: Array<Object>) => {
+	if(this._handleHealthKitError(err, 'getHeightSamples')){
+		return;
+	}
+	// use samples ...
+});
+```
+
+___
+
 #### **`saveHeight`**
 save a numeric height value to HealthKit
 

examples/StepsDemo/app/components/home/index.js

@@ -28,7 +28,8 @@ const HKOPTIONS = {
         read:  [
             RPERMS.StepCount,
             RPERMS.DistanceWalkingRunning,
-            RPERMS.FlightsClimbed
+            RPERMS.FlightsClimbed,
+            RPERMS.Height,
         ],
         write: [WPERMS.StepCount],
     }
@@ -102,6 +103,20 @@ class Home extends Component {
             console.log('getFlightsClimbed -res-> ', res);
         });
 
+
+
+        let sampleOptions = {
+            startDate: (new Date(2016,4,1)).toISOString(),
+        };
+
+        AppleHealthKit.getHeightSamples(sampleOptions, (err, samples) => {
+            if(this._handleHKError(err, 'getHeightSamples')){
+                return;
+            }
+            console.log('getHeightSamples: ', samples);
+        });
+
+
     }
 
     _onPressItem(key) {