Support Android project (#2644)

1. Add experimental Android support
2. Add `auto` option to automatically enable the support in insiders

Signed-off-by: Shi Chen <[email protected]>

Author: CsCherrYY

README.md

@@ -25,7 +25,7 @@ Features
 
 * Supports code from Java 1.5 to Java 18
 * Maven pom.xml project support
-* Basic Gradle Java project support (Android not supported)
+* Gradle project support (with experimental Android project import support)
 * Standalone Java files support
 * As-you-type reporting of parsing and compilation errors
 * Code completion
@@ -48,8 +48,6 @@ Features
 * Call Hierarchy
 * Type Hierarchy
 
-Please note that [Gradle-based Android projects are not supported](https://github.com/redhat-developer/vscode-java/issues/10#issuecomment-268834749).
-
 To launch and debug your Java programs, it's recommended you install *[Java Debug Extension for Visual Studio Code](https://marketplace.visualstudio.com/items?itemName=vscjava.vscode-java-debug)*.
 
 See the [changelog](CHANGELOG.md) for the latest release. You might also find useful information in the project [Wiki](https://github.com/redhat-developer/vscode-java/wiki).
@@ -210,6 +208,7 @@ New in 1.10.0
 * `java.import.maven.offline.enabled`: Enable/disable the Maven offline mode. Defaults to `false`.
 * `java.codeAction.sortMembers.avoidVolatileChanges`: Reordering of fields, enum constants, and initializers can result in semantic and runtime changes due to different initialization and persistence order. This setting prevents this from occurring. Defaults to `true`.
 * `java.jdt.ls.protobufSupport.enabled`: Specify whether to automatically add Protobuf output source directories to the classpath. **Note:** Only works for Gradle `com.google.protobuf` plugin `0.8.4` or higher. Defaults to `true`.
+* `java.jdt.ls.androidSupport.enabled`: [Experimental] Specify whether to enable Android project importing. When set to `auto`, the Android support will be enabled in Visual Studio Code - Insiders. **Note:** Only works for Android Gradle Plugin `3.2.0` or higher. Defaults to `auto`.
 
 Semantic Highlighting
 ===============

package.json

@@ -941,6 +941,17 @@
           "markdownDescription": "Specify whether to automatically add Protobuf output source directories to the classpath.\n\n**Note:** Only works for Gradle `com.google.protobuf` plugin `0.8.4` or higher.",
           "scope": "window"
         },
+        "java.jdt.ls.androidSupport.enabled": {
+          "type": "string",
+          "enum": [
+            "auto",
+            "on",
+            "off"
+          ],
+          "default": "auto",
+          "markdownDescription": "[Experimental] Specify whether to enable Android project importing. When set to `auto`, the Android support will be enabled in Visual Studio Code - Insiders.\n\n**Note:** Only works for Android Gradle Plugin `3.2.0` or higher.",
+          "scope": "window"
+        },
         "java.codeAction.sortMembers.avoidVolatileChanges": {
           "type": "boolean",
           "default": true,

src/extension.ts

@@ -4,7 +4,7 @@ import * as path from 'path';
 import * as os from 'os';
 import * as fs from 'fs';
 import * as fse from 'fs-extra';
-import { workspace, extensions, ExtensionContext, window, commands, ViewColumn, Uri, languages, IndentAction, InputBoxOptions, EventEmitter, OutputChannel, TextDocument, RelativePattern, ConfigurationTarget, WorkspaceConfiguration, env, UIKind, CodeActionContext, Diagnostic, CodeActionTriggerKind } from 'vscode';
+import { workspace, extensions, ExtensionContext, window, commands, ViewColumn, Uri, languages, IndentAction, InputBoxOptions, EventEmitter, OutputChannel, TextDocument, RelativePattern, ConfigurationTarget, WorkspaceConfiguration, env, UIKind, CodeActionContext, Diagnostic, CodeActionTriggerKind, version } from 'vscode';
 import { ExecuteCommandParams, ExecuteCommandRequest, LanguageClientOptions, RevealOutputChannelOn, ErrorHandler, Message, ErrorAction, CloseAction, DidChangeConfigurationNotification, CancellationToken, CodeActionRequest, CodeActionParams, Command } from 'vscode-languageclient';
 import { LanguageClient } from 'vscode-languageclient/node';
 import { collectJavaExtensions, isContributedPartUpdated } from './plugin';
@@ -633,6 +633,21 @@ export function getJavaConfig(javaHome: string) {
 	const editorConfig = workspace.getConfiguration('editor');
 	javaConfig.format.insertSpaces = editorConfig.get('insertSpaces');
 	javaConfig.format.tabSize = editorConfig.get('tabSize');
+	const androidSupport = javaConfig.jdt.ls.androidSupport.enabled;
+	switch (androidSupport) {
+		case "auto":
+			javaConfig.jdt.ls.androidSupport.enabled = version.includes("insider") ? true : false;
+			break;
+		case "on":
+			javaConfig.jdt.ls.androidSupport.enabled = true;
+			break;
+		case "off":
+			javaConfig.jdt.ls.androidSupport.enabled = false;
+			break;
+		default:
+			javaConfig.jdt.ls.androidSupport.enabled = false;
+			break;
+	}
 	return javaConfig;
 }