2. Apply for registration in official website and WeChat open platform, and submit it for review. Note the signature generated by your keystore. (This signature acquisition method: sign your application with your own keystore, install it in your mobile phone, then install genSignature.apk in official website, run it, enter the package name of your application, and the corresponding signature will be generated. )
3. Develop with appID allocated by official website, and refer to the official demonstration.
4. Once the application is approved, you can share it with WeChat.
-Let's talk about it if there is a problem. As for the code, the official demonstration is very detailed.