Java Intellisense

Android for VSCode supports Intellisense for Java source files.

By default, the Android extension for VSCode enables context-sensitive code-completion using data gathered from the Android framework library. This library contains all public classes, fields and methods for Android Platform APIs.

Jetpack + AndroidX

Modern apps frequently make use of AndroidX modularised libraries (otherwise referred to as Android Jetpack) - these libraries are not enabled by default in VSCode code-completion, but can be configured by the developer.

To include androidx.* types in Java Intellisense, the relevant androidx library must be added to the workspace settings:

• In VSCode, use the command palette to select Preferences: Open Workspace Settings (JSON).
• In the JSON file, add a android-dev-ext.codeCompletionLibraries section as shown below:

// .vscode/settings.json
// Place your settings in this file to overwrite default and user settings.
{
    "android-dev-ext.codeCompletionLibraries": [
        "androidx.activity:activity",
        "androidx.core:core",
        "androidx.fragment:fragment",
        "androidx.navigation:navigation-fragment",
    ]
}

• For each androidx library used in your application, include the corresponding library in the list. In the example above, several androidx libraries relating to activities, fragments and navigation are included.
• The settings JSON file itself supports code-completion - use ctrl/cmd-space to display a list of supported androidx libraries.
• Save the file and the androidx types will be included in the code-completion options.