The principle of exchanging apk for computer needs to install Java environment and another plug-in. Open the modified apk package after installation, and the computer will decompile. If the apk package has not been modified, it can also be modified in the software. You can modify pictures, audio, etc. After modification, you can choose to compile into apk (decompilation).

The mobile phone will be renamed as zip, then replace the content you want to replace, change the apk suffix, and then download the mobile phone signature tool to re-sign, and you can install it.