Changing electron app icon

Original post https://github.com/onmyway133/blog/issues/66

Generate icns

• Generate .iconset
• Run iconutil -c icns "Icon.iconset". Note that icon names must be first letter lowsercased

Use icns

• In main.js, specify icon

win = new BrowserWindow({
  width: 800, 
  height: 600,
  icon: __dirname +  '/Icon/Icon.icns'
})

You can also use helper url methods

const path = require('path')
const url = require('url')

const iconUrl = url.format({
  pathname: path.join(__dirname, 'Icon/Icon.icns'),
  protocol: 'file:',
  slashes: true
})

If app icon is not updated

• I get a problem that electron always shows default app icon. I tried using png, NativeImage, different icon sizes but still the problem
• Go to node_modules -> electron -> dist, right click on Electron, choose View Info
• Drag another icns into the icon on the top left

Release with electron-packager

• icon must be specified with __dirname (we already did) for electron-packager to pick up correct icons