Use Android picker for local vaults

main.go

@@ -1559,6 +1559,44 @@ func (u *ui) startChooseSyncLocalSourceAction() {
 	})
 }
 
+func pickedDocumentName(file io.ReadCloser, fallback string) string {
+	if named, ok := file.(interface{ Name() string }); ok {
+		if base := filepath.Base(strings.TrimSpace(named.Name())); base != "" && base != "." && base != string(filepath.Separator) {
+			return base
+		}
+	}
+	fallback = filepath.Base(strings.TrimSpace(fallback))
+	if fallback == "" || fallback == "." || fallback == string(filepath.Separator) {
+		return "selected-vault.kdbx"
+	}
+	return fallback
+}
+
+func (u *ui) startChooseVaultPathAction() {
+	if runtime.GOOS != "android" || u.fileExplorer == nil {
+		u.runAction("choose vault path", func() error { return u.chooseExistingFileAction(&u.vaultPath) })
+		return
+	}
+	u.runBackgroundAction("choose vault file", func() (func() error, error) {
+		file, err := u.fileExplorer.ChooseFile(".kdbx")
+		if err != nil {
+			if errors.Is(err, explorer.ErrUserDecline) {
+				return func() error { return nil }, nil
+			}
+			return nil, err
+		}
+		defer file.Close()
+		content, err := io.ReadAll(file)
+		if err != nil {
+			return nil, err
+		}
+		name := pickedDocumentName(file, "selected-vault.kdbx")
+		return func() error {
+			return u.importSharedVaultBytesAction(name, content)
+		}, nil
+	})
+}
+
 func (u *ui) startImportSharedVaultAction() {
 	if !supportsSharedVaultImport(runtime.GOOS) || u.fileExplorer == nil {
 		return
@@ -4386,7 +4424,7 @@ func (u *ui) layout(gtx layout.Context) layout.Dimensions {
 		if u.lifecycleBusy() {
 			continue
 		}
-		u.runAction("choose vault path", func() error { return u.chooseExistingFileAction(&u.vaultPath) })
+		u.startChooseVaultPathAction()
 	}
 	for u.importSharedVault.Clicked(gtx) {
 		if u.lifecycleBusy() {