Android support for recording video (#262)

* Initial commit with Android video support

* stopCapture now works

* Bug fixes and parameter enhancements.  README updated.

* Modified stopCapture parameter count to match iOS

* fixed promise bug on stopCapture

* Update RCTCameraModule.java

In Android preview and recording sizes are different, which can cause an error.  This fix detects the difference and chooses a recording resolution that matches.

* Update RCTCameraModule.java

* Update RCTCamera.java

Creating video functions in style/convention of existing

* Update RCTCameraModule.java

Use new functions for adjusting video capture size and quality

* Update RCTCameraModule.java

Fixes issue where file not video playable (readable) on older devices

* Update AndroidManifest.xml

Since we're reading and writing video and pictures, need permissions for it.

* Fixed upside down camera (on some platforms), and misc bugs and crashes

* Added camera-roll and capture to memory support, new options, and support for duration, filesize, and metadata

* To make merge nicer, temporarily reverting "Added camera-roll and capture to memory support, new options, and support for duration, filesize, and metadata"

This reverts commit 9ea1ad409c7e6121cf0197172e752b7523d4b092.

* Fixed merge & brought back all improvements from 9ea1ad4

* Fixed logic for video -> camera roll

* Updates

* Uncommenting setProfile

* Fix support for React Native 0.25

* Renamed Camera to index

* * Fix after merge android recording

* * Fixed android camera roll file saving
* Added recording to example

* * Android promise rejections with exceptions
* Fixed preview, video and photo sizes
* Android recording result in new, javascript object, format

* * Removed example.index.android.js as there is Example project

* * Readme for example

* don't force a specific codec

* always use cache dir

* * Using MediaScannerConnection instead of ACTION_MEDIA_SCANNER_SCAN_FILE intent

* * As described in https://github.com/lwansbrough/react-native-camera/pull/262#issuecomment-239622268:
- fixed video the wrong direction and recoder start fail at "low,medium" on the nexus 5 x

Example/Example.js

@@ -34,9 +34,11 @@ const styles = StyleSheet.create({
   bottomOverlay: {
     bottom: 0,
     backgroundColor: 'rgba(0,0,0,0.4)',
+    flexDirection: 'row',
+    justifyContent: 'center',
+    alignItems: 'center',
   },
   captureButton: {
-    flex: 1,
     padding: 15,
     backgroundColor: 'white',
     borderRadius: 40,
@@ -47,6 +49,9 @@ const styles = StyleSheet.create({
   flashButton: {
     padding: 5,
   },
+  buttonsSpace: {
+    width: 10,
+  },
 });
 
 export default class Example extends React.Component {
@@ -63,9 +68,12 @@ export default class Example extends React.Component {
         orientation: Camera.constants.Orientation.auto,
         flashMode: Camera.constants.FlashMode.auto,
       },
+      isRecording: false
     };
 
     this.takePicture = this.takePicture.bind(this);
+    this.startRecording = this.startRecording.bind(this);
+    this.stopRecording = this.stopRecording.bind(this);
     this.switchType = this.switchType.bind(this);
     this.switchFlash = this.switchFlash.bind(this);
   }
@@ -78,6 +86,26 @@ export default class Example extends React.Component {
     }
   }
 
+  startRecording() {
+    if (this.camera) {
+      this.camera.capture({mode: Camera.constants.CaptureMode.video})
+          .then((data) => console.log(data))
+          .catch(err => console.error(err));
+      this.setState({
+        isRecording: true
+      });
+    }
+  }
+
+  stopRecording() {
+    if (this.camera) {
+      this.camera.stopCapture();
+      this.setState({
+        isRecording: false
+      });
+    }
+  }
+
   switchType() {
     let newType;
     const { back, front } = Camera.constants.Type;
@@ -181,14 +209,42 @@ export default class Example extends React.Component {
           </TouchableOpacity>
         </View>
         <View style={[styles.overlay, styles.bottomOverlay]}>
-          <TouchableOpacity
-            style={styles.captureButton}
-            onPress={this.takePicture}
-          >
-            <Image
-              source={require('./assets/ic_photo_camera_36pt.png')}
-            />
-          </TouchableOpacity>
+          {
+            !this.state.isRecording
+            &&
+            <TouchableOpacity
+                style={styles.captureButton}
+                onPress={this.takePicture}
+            >
+              <Image
+                  source={require('./assets/ic_photo_camera_36pt.png')}
+              />
+            </TouchableOpacity>
+            ||
+            null
+          }
+          <View style={styles.buttonsSpace} />
+          {
+              !this.state.isRecording
+              &&
+              <TouchableOpacity
+                  style={styles.captureButton}
+                  onPress={this.startRecording}
+              >
+                <Image
+                    source={require('./assets/ic_videocam_36pt.png')}
+                />
+              </TouchableOpacity>
+              ||
+              <TouchableOpacity
+                  style={styles.captureButton}
+                  onPress={this.stopRecording}
+              >
+                <Image
+                    source={require('./assets/ic_stop_36pt.png')}
+                />
+              </TouchableOpacity>
+          }
         </View>
       </View>
     );