On windows you can use photoshop or an image editing tool of your choice for the job. Or just install the npm package ( authored by a really awesome guy btw ) ) to do that automagically for you: $ npm install -save-dev react-native-build-utils $ convert android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png -shave 12x12 -bordercolor '#EF4142' -border 12 android/app/src/main/res/mipmap-xxhdpi/ic_launcher_dev.png $ convert android/app/src/main/res/mipmap-xhdpi/ic_launcher.png -shave 10x10 -bordercolor '#EF4142' -border 10 android/app/src/main/res/mipmap-xhdpi/ic_launcher_dev.png $ convert android/app/src/main/res/mipmap-hdpi/ic_launcher.png -shave 8x8 -bordercolor '#EF4142' -border 8 android/app/src/main/res/mipmap-hdpi/ic_launcher_dev.png $ convert android/app/src/main/res/mipmap-mdpi/ic_launcher.png -shave 6圆 -bordercolor '#EF4142' -border 6 android/app/src/main/res/mipmap-mdpi/ic_launcher_dev.png If you are running linux, you can use the following commands to auto generate icon versions for your dev app: $ sudo apt-get install imagemagick php5-imagick Let's do that now: Step 3: setting different icon for dev app We could still do better by changing the icon though. Open ROOT/android/app/src/main/res/values/strings.xml and change: Step 2: setting different title for dev app we have no way to distinguish between the two. You should now see the two apps side by side:īut. $ react-native run-android -configuration=release ROOT/android/app/src/main/java/com/memorynback/MainApplication.java.ROOT/android/app/src/main/java/com/memorynback/MainActivity.java.ROOT/android/app/src/main/AndroidManifest.xml.

ROOT/android/app/BUCK # two changes here.

Step 1: install the dev version on the appĭo a global find and replace in your project: com.appname -> com.appnameDev

You have a working react-native project with a production version of the app installed on your device.

When developing a mobile app, you'd want to have both dev and prod versions installed on your device, and be able to distinguish between them easily at a glance, like so: NOTE: ATM this tutorial only supports android environment.

Run react native android studio