Add alpha setting to Android app, need to test it..
Add alpha setting to Android app, need to test it..

hug963/CordovaCameraPreview,bvx89/cordova-plugin-camera-preview,mbppower/CordovaCameraPreview,SVANNER/cordova-plugin-camera-preview,piobuilleann/cordova-plugin-camera-preview,divampo/cordova-plugin-camera-preview,cordova-plugin-camera-preview/cordova-plugin-camera-preview,mbppower/CordovaCameraPreview,hug963/CordovaCameraPreview,stephan-nordnes-eriksen/CordovaCameraPreview,parkt/cordova-plugin-camera-preview,divampo/cordova-plugin-camera-preview,Et3rnal/cordova-plugin-camera-preview,aguptaadco/CordovaCameraPreview,anneb/cordova-plugin-camera-preview,Et3rnal/cordova-plugin-camera-preview,anneb/cordova-plugin-camera-preview,aguptaadco/CordovaCameraPreview,SVANNER/cordova-plugin-camera-preview,bvx89/cordova-plugin-camera-preview,stephan-nordnes-eriksen/CordovaCameraPreview,cordova-plugin-camera-preview/cordova-plugin-camera-preview,parkt/cordova-plugin-camera-preview,piobuilleann/cordova-plugin-camera-preview