Fix for Android issue with PNG image during pre-build step

build-extras.gradle

@@ -0,0 +1,5 @@
+android {
+	aaptOptions {
+		cruncherEnabled = false
+	}
+}

config.xml

@@ -4,7 +4,9 @@
     <description>A merchant terminal app which allows payments by customers via multiple cryptocurrencies.</description>
     <icon density="mdpi" height="57" src="www/favicon.ico" width="57" />
     <access origin="https://*/*" />
-    <engine name="browser" spec="5.0.3" />
+    <platform name="android">
+        <hook src="scripts/copy-build-extras-gradle-to-platform-dir.js" type="before_prepare" />
+    </platform>
     <engine name="android" spec="6.3.0" />
     <plugin name="cordova-plugin-whitelist" spec="1.3.3" />
 </widget>

package.json

@@ -4,8 +4,7 @@
   "description": "A merchant terminal app which allows payments by customers via multiple cryptocurrencies.",
   "main": "index.js",
   "scripts": {
-    "cordova-browser": "grunt build && cordova platform remove browser && cordova platform add browser && cordova run browser",
-    "android-device": "grunt build && cordova run android --device",
+    "android-device": "grunt build && cordova platform remove android && cordova platform add android && cordova run android --device",
     "start": "grunt",
     "test": "echo \"Error: no test specified\" && exit 1"
   },
@@ -31,7 +30,6 @@
     "browserify": "14.3.0",
     "bs58check": "2.0.2",
     "cordova-android": "6.3.0",
-    "cordova-browser": "5.0.3",
     "cordova-plugin-whitelist": "1.3.3",
     "ecurve": "1.0.5",
     "grunt": "1.0.1",
@@ -57,7 +55,6 @@
   },
   "cordova": {
     "platforms": [
-      "browser",
       "android"
     ],
     "plugins": {

scripts/copy-build-extras-gradle-to-platform-dir.js

@@ -0,0 +1,21 @@
+#!/usr/bin/env node
+
+module.exports = function(context) {
+	var Q = context.requireCordovaModule('q');
+	var deferral = new Q.defer();
+	setTimeout(function() {
+		var fs = require('fs');
+		var path = require('path');
+		var srcFilePath = path.join(__dirname, '..', 'build-extras.gradle');
+		var destFilePath = path.join(__dirname, '..', 'platforms', 'android', 'build-extras.gradle');
+		var readStream = fs.createReadStream(srcFilePath);
+		var writeStream = fs.createWriteStream(destFilePath);
+		readStream.pipe(writeStream);
+		writeStream.on('error', function(error) {
+			deferral.reject(error);
+		}).on('finish', function() {
+			deferral.resolve();
+		});
+	}, 0);
+	return deferral.promise;
+};