Reorganize and group modules

core/compat/.gitignore

@@ -0,0 +1 @@
+/build

core/compat/build.gradle.kts

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+plugins {
+    id("com.android.library")
+    id("kotlin-android")
+}
+
+android {
+    compileSdk = sdk.versions.compileSdk.get().toInt()
+
+    defaultConfig {
+        minSdk = sdk.versions.minSdk.get().toInt()
+        targetSdk = sdk.versions.targetSdk.get().toInt()
+
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+        consumerProguardFiles("consumer-rules.pro")
+    }
+
+    buildTypes {
+        release {
+            proguardFiles(
+                    getDefaultProguardFile("proguard-android-optimize.txt"),
+                    "proguard-rules.pro"
+            )
+        }
+    }
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_1_8
+        targetCompatibility = JavaVersion.VERSION_1_8
+    }
+
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
+    namespace = "de.mm20.launcher2.compat"
+}
+
+dependencies {
+
+    implementation(libs.androidx.core)
+    implementation(libs.androidx.appcompat)
+    implementation(libs.materialcomponents.core)
+}

core/compat/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.kts.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

core/compat/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+
+</manifest>

core/compat/src/main/java/de/mm20/launcher2/compat/PackageManagerCompat.kt

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+package de.mm20.launcher2.compat
+
+import android.content.pm.PackageManager
+import android.os.Build
+
+object PackageManagerCompat {
+    fun getInstallSource(
+        packageManager: PackageManager,
+        packageName: String
+    ): InstallSourceInfoCompat {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
+            val installSourceInfo = packageManager.getInstallSourceInfo(packageName)
+            return InstallSourceInfoCompat(
+                originatingPackageName = installSourceInfo.originatingPackageName,
+                initiatingPackageName = installSourceInfo.initiatingPackageName,
+                installingPackageName = installSourceInfo.installingPackageName,
+            )
+        } else {
+            val installerPackageName = packageManager.getInstallerPackageName(packageName)
+            return InstallSourceInfoCompat(
+                originatingPackageName = installerPackageName,
+                initiatingPackageName = installerPackageName,
+                installingPackageName = installerPackageName
+            )
+        }
+    }
+}
+
+data class InstallSourceInfoCompat(
+    val originatingPackageName: String?,
+    val initiatingPackageName: String?,
+    val installingPackageName: String?
+)