Torch intensity control on iOS

README.md

@@ -43,12 +43,21 @@ Just add the following xml to your `config.xml` to always use the latest version
 ```
 
 ## 3. Usage
+
+Since version 3.2.0 of this plugin you can pass in an `intensity` property
+which needs to be anywhere between 0.0 and 1.0. __Only__ on iOS this will affect the
+brightness of the torch.
+
 ```javascript
 window.plugins.flashlight.available(function(isAvailable) {
   if (isAvailable) {
 
     // switch on
-    window.plugins.flashlight.switchOn(); // success/error callbacks may be passed
+    window.plugins.flashlight.switchOn(
+      function() {}, // optional success callback
+      function() {}, // optional error callback
+      {intensity: 0.3} // optional as well
+    );
 
     // switch off after 3 seconds
     setTimeout(function() {
@@ -63,7 +72,11 @@ window.plugins.flashlight.available(function(isAvailable) {
 
 As an alternative to `switchOn` and `switchOff`, you can use the `toggle` function
 ```javascript
-window.plugins.flashlight.toggle(); // success/error callbacks may be passed
+window.plugins.flashlight.toggle(
+  function() {}, // optional success callback
+  function() {}, // optional error callback
+  {intensity: 0.3} // optional as well, used on iOS when switching on
+);
 ```
 
 To know if the flashlight is on or off you can call `isSwitchedOn` 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "cordova-plugin-flashlight",
-  "version": "3.1.0",
+  "version": "3.2.0",
   "description": "This plugin allows you switch the Flashlight / Torch of your device on or off.",
   "cordova": {
     "id": "cordova-plugin-flashlight",

plugin.xml

@@ -2,7 +2,7 @@
 <plugin xmlns="http://apache.org/cordova/ns/plugins/1.0"
         xmlns:android="http://schemas.android.com/apk/res/android"
         id="cordova-plugin-flashlight"
-        version="3.1.0">
+        version="3.2.0">
 
   <name>Flashlight</name>
 

src/ios/Flashlight.m

@@ -14,7 +14,19 @@ - (void)switchOn:(CDVInvokedUrlCommand*)command {
     if ([self deviceHasFlashlight]) {
         AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
         [device lockForConfiguration:nil];
-        [device setTorchMode:AVCaptureTorchModeOn];
+        NSError *error = nil;
+        float value = AVCaptureMaxAvailableTorchLevel;
+        if (command.arguments.count > 0) {
+            NSDictionary* options = command.arguments[0];
+            NSNumber *intensity = options[@"intensity"];
+            if (intensity != nil) {
+                float requestedValue = [intensity floatValue];
+                if (requestedValue > 0.0 && requestedValue < 1.0) {
+                    value = requestedValue;
+                }
+            }
+        }
+        [device setTorchModeOnWithLevel:value error:&error];
         [device setFlashMode:AVCaptureFlashModeOn];
         [device unlockForConfiguration];
         pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_OK];

www/Flashlight.js

@@ -11,21 +11,22 @@ Flashlight.prototype = {
     }, function() { callback(false); }, "Flashlight", "available", []);
   },
 
-  switchOn: function (successCallback, errorCallback) {
+  switchOn: function (successCallback, errorCallback, options) {
+    var opts = options || {};
     this._isSwitchedOn = true;
-    cordova.exec(successCallback, errorCallback, "Flashlight", "switchOn", []);
+    cordova.exec(successCallback, errorCallback, "Flashlight", "switchOn", [opts]);
   },
 
   switchOff: function (successCallback, errorCallback) {
     this._isSwitchedOn = false;
     cordova.exec(successCallback, errorCallback, "Flashlight", "switchOff", []);
   },
 
-  toggle: function (successCallback, errorCallback) {
+  toggle: function (successCallback, errorCallback, options) {
     if (this._isSwitchedOn) {
       this.switchOff(successCallback, errorCallback);
     } else {
-      this.switchOn(successCallback, errorCallback);
+      this.switchOn(successCallback, errorCallback, options);
     }
   },