tasks.md

This is default tasks.json for react-native init projects. Put it into .vscode folder in your project.

{
    "version": "2.0.0",
    "presentation": {
        "reveal": "always",
        "panel": "new"
    },
    "tasks": [
        {
            "taskName": "Build APK Debug",
            "group": "build",
            "type": "shell",
            "windows": {
                "command": "cd android; if($?) {./gradlew assembleDebug}"
            },
            "linux": {
                "command": "cd android && ./gradlew assembleDebug"
            }
        },
        {
            "taskName": "Build APK Release",
            "group": "build",
            "type": "shell",
            "windows": {
                "command": "cd android; if($?) {./gradlew assembleRelease}"
            },
            "linux": {
                "command": "cd android && ./gradlew assembleRelease"
            }
        },
        {
            "taskName": "Generate Android Bundle",
            "group": "build",
            "type": "shell",
            "command": "react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/main.jsbundle"
        },
        {
            "taskName": "Generate iOS Bundle",
            "group": "build",
            "type": "shell",
            "command": "react-native bundle --platform ios --dev false --entry-file index.js --bundle-output ios/main.jsbundle"
        }
    ]
}

• Note: if you use [email protected] or lower change index.js to index.ios.js/index.android.js or your own entry-file.

More about tasks in VSCode read here

How to Generating Signed APK