gogio: load Android assets from module root

gogio/androidbuild.go

@@ -424,7 +424,8 @@ func exeAndroid(tmpDir string, tools *androidTools, bi *buildInfo, extraJars, pe
 	if err != nil {
 		return err
 	}
-	if err := copyTree(filepath.Join(bi.pkgDir, "android", "res"), resDir); err != nil {
+	moduleRoot := moduleRootForDir(bi.pkgDir)
+	if err := copyTree(filepath.Join(moduleRoot, "android", "res"), resDir); err != nil {
 		return err
 	}
 	resZip := filepath.Join(tmpDir, "resources.zip")
@@ -452,8 +453,8 @@ func exeAndroid(tmpDir string, tools *androidTools, bi *buildInfo, extraJars, pe
 		AppName:        appName,
 		Schemes:        bi.schemes,
 		PackageQueries: bi.packageQueries,
-		ManifestSnip:   readOptionalText(filepath.Join(bi.pkgDir, "android", "manifest_snippets.xml")),
+		ManifestSnip:   readOptionalText(filepath.Join(moduleRoot, "android", "manifest_snippets.xml")),
-		AppSnip:        readOptionalText(filepath.Join(bi.pkgDir, "android", "application_snippets.xml")),
+		AppSnip:        readOptionalText(filepath.Join(moduleRoot, "android", "application_snippets.xml")),
 	}
 	manifestBuffer, err := renderAndroidManifest(manifestSrc)
 	if err != nil {
@@ -839,6 +840,20 @@ func androidExtraJars(dir string) ([]string, error) {
 	return jars, nil
 }
 
+func moduleRootForDir(dir string) string {
+	current := dir
+	for {
+		if _, err := os.Stat(filepath.Join(current, "go.mod")); err == nil {
+			return current
+		}
+		parent := filepath.Dir(current)
+		if parent == current {
+			return dir
+		}
+		current = parent
+	}
+}
+
 func findNDK(androidHome string) (string, error) {
 	ndks, err := filepath.Glob(filepath.Join(androidHome, "ndk", "*"))
 	if err != nil {

gogio/androidbuild_test.go

@@ -83,6 +83,34 @@ func TestCopyTreeCopiesNestedResources(t *testing.T) {
 	}
 }
 
+func TestModuleRootForDirFindsOwningModule(t *testing.T) {
+	t.Parallel()
+
+	root := t.TempDir()
+	writeTestFile(t, filepath.Join(root, "go.mod"), "module example.invalid/crew\n")
+	dir := filepath.Join(root, "cmd", "keepassgo")
+	if err := os.MkdirAll(dir, 0o755); err != nil {
+		t.Fatalf("MkdirAll(%q) error = %v", dir, err)
+	}
+
+	if got := moduleRootForDir(dir); got != root {
+		t.Fatalf("moduleRootForDir(%q) = %q, want %q", dir, got, root)
+	}
+}
+
+func TestModuleRootForDirFallsBackToInputDir(t *testing.T) {
+	t.Parallel()
+
+	dir := filepath.Join(t.TempDir(), "cmd", "keepassgo")
+	if err := os.MkdirAll(dir, 0o755); err != nil {
+		t.Fatalf("MkdirAll(%q) error = %v", dir, err)
+	}
+
+	if got := moduleRootForDir(dir); got != dir {
+		t.Fatalf("moduleRootForDir(%q) = %q, want %q", dir, got, dir)
+	}
+}
+
 func writeTestFile(t *testing.T, path, contents string) {
 	t.Helper()
 	if err := os.MkdirAll(filepath.Dir(path), 0o755); err != nil {