Simplify Android packaging around gogio

APK.md

@@ -6,11 +6,17 @@ Build the APK with:
 make apk
 ```
 
+`make apk` uses a local Java 25 install when `JAVA_HOME` points to one.
+If the host does not have a working Java 25 install, it falls back to the
+repo-managed Docker image in `packaging/docker/android-apk/`, which also builds
+with Java 25.
+
 Environment:
 
 - `ANDROID_SDK_ROOT` defaults to `/opt/android-sdk`.
 - `ANDROID_NDK_ROOT` defaults to `/opt/android-ndk`.
 - `JAVA_HOME` defaults to `/usr/lib/jvm/java-25-openjdk`.
+- `APK_BUILD_IMAGE` overrides the Docker image name used by `make apk-container`.
 - `APP_ID` overrides the Android application id.
 - `APP_VERSION` overrides the version shown inside KeePassGO itself.
 - `APK_OUT` overrides the output path.
@@ -24,9 +30,9 @@ Installed machine prerequisites expected by this repo:
 - `android-sdk-build-tools`
 - `android-platform-35`
 - `android-sdk-platform-tools`
-- a working JDK install
+- a working Java 25 JDK install for `make apk-local`, or Docker for `make apk`
 
-The repo tracks `gogio` as a Go tool, so the build runs through:
+The repo tracks `gogio` as a Go tool, and the local build runs through:
 
 ```sh
 go tool gogio -target android ./cmd/keepassgo ...
@@ -38,10 +44,10 @@ The Android build uses the branded icon asset at:
 
 Note:
 
-- Gio's Android doc currently references Java 1.8, but the Android build-tools
+- KeePassGO's documented Android build uses Java 25 locally.
-  installed on this machine (`d8` from build-tools 37) do not run on Java 8.
+- If that host setup is unavailable, `make apk` falls back to the Docker image
-- In this environment, KeePassGO's APK build requires a newer JDK runtime on
+  so the build still runs under Java 25 instead of encoding a newer host JDK as
-  `PATH`, which is why the repo defaults `JAVA_HOME` to `/usr/lib/jvm/java-25-openjdk`.
+  a requirement.
 - Android runtime testing on the `KeepassGoAPI35` emulator showed a black-screen
   regression with `gioui.org v0.9.0` while a stock Gio example and KeePassGO both
   rendered correctly with `gioui.org v0.8.0` on the same emulator and SDK/JDK

Makefile

@@ -2,6 +2,7 @@ ANDROID_SDK_ROOT ?= /opt/android-sdk
 ANDROID_NDK_ROOT ?= /opt/android-ndk
 JAVA_HOME ?= /usr/lib/jvm/java-25-openjdk
 PATH := $(JAVA_HOME)/bin:$(ANDROID_SDK_ROOT)/cmdline-tools/latest/bin:$(ANDROID_SDK_ROOT)/platform-tools:$(PATH)
+APK_BUILD_IMAGE ?= keepassgo/android-apk-build:java25
 APP_ID ?= org.julianfamily.keepassgo
 APK_OUT ?= build/keepassgo.apk
 APK_VERSION ?= 0.1.0.1
@@ -25,8 +26,16 @@ ifneq ($(strip $(SIGNPASS)),)
 GOGIO_SIGN_FLAGS += -signpass $(SIGNPASS)
 endif
 
-.PHONY: apk archlinux-pkgbuild browser-bridge browser-extension-validate
+.PHONY: apk apk-local apk-container apk-container-image archlinux-pkgbuild browser-bridge browser-extension-validate
-apk: android/keepassgo-android.jar
+apk:
+	@if [ -x "$(JAVA_HOME)/bin/java" ] && "$(JAVA_HOME)/bin/java" -version 2>&1 | grep -q 'version "25'; then \
+		$(MAKE) apk-local JAVA_HOME="$(JAVA_HOME)"; \
+	else \
+		echo "Using Dockerized Java 25 Android build because JAVA_HOME is not a working Java 25 install."; \
+		$(MAKE) apk-container; \
+	fi
+
+apk-local: android/keepassgo-android.jar
 	@test -x "$(JAVA_HOME)/bin/java" || { echo "JAVA_HOME must point to a working JDK install"; exit 1; }
 	@test -d "$(ANDROID_SDK_ROOT)" || { echo "ANDROID_SDK_ROOT must point to an Android SDK install"; exit 1; }
 	@test -d "$(ANDROID_NDK_ROOT)" || { echo "ANDROID_NDK_ROOT must point to an Android NDK install"; exit 1; }
@@ -50,12 +59,32 @@ apk: android/keepassgo-android.jar
 		-icon internal/assets/keepassgo-icon.png \
 		./cmd/keepassgo
 
+apk-container: apk-container-image
+	@command -v docker >/dev/null 2>&1 || { echo "docker is required for apk-container"; exit 1; }
+	@test -d "$(ANDROID_SDK_ROOT)" || { echo "ANDROID_SDK_ROOT must point to an Android SDK install"; exit 1; }
+	@test -d "$(ANDROID_NDK_ROOT)" || { echo "ANDROID_NDK_ROOT must point to an Android NDK install"; exit 1; }
+	docker run --rm \
+		-u "$$(id -u):$$(id -g)" \
+		-v "$(CURDIR):$(CURDIR)" \
+		-w "$(CURDIR)" \
+		-v "$(ANDROID_SDK_ROOT):$(ANDROID_SDK_ROOT)" \
+		-v "$(ANDROID_NDK_ROOT):$(ANDROID_NDK_ROOT)" \
+		-e ANDROID_SDK_ROOT="$(ANDROID_SDK_ROOT)" \
+		-e ANDROID_NDK_ROOT="$(ANDROID_NDK_ROOT)" \
+		-e JAVA_HOME=/opt/java/openjdk \
+		$(APK_BUILD_IMAGE) \
+		make apk-local JAVA_HOME=/opt/java/openjdk
+
+apk-container-image:
+	@command -v docker >/dev/null 2>&1 || { echo "docker is required for apk-container-image"; exit 1; }
+	docker build --load -t $(APK_BUILD_IMAGE) packaging/docker/android-apk
+
 android/keepassgo-android.jar: $(shell find androidsrc -type f | sort)
 	@test -x "$(JAVA_HOME)/bin/javac" || { echo "JAVA_HOME must point to a working JDK install"; exit 1; }
 	@test -f "$(ANDROID_SDK_ROOT)/platforms/android-$(ANDROID_TARGET_SDK)/android.jar" || { echo "Android platform android-$(ANDROID_TARGET_SDK) is missing"; exit 1; }
 	@mkdir -p android
-	@zsh -lc 'tmpdir=$$(mktemp -d); \
+	@sh -ec 'tmpdir=$$(mktemp -d); \
-		trap '\''python3 -c "import shutil,sys; shutil.rmtree(sys.argv[1], ignore_errors=True)" "$$tmpdir"'\'' EXIT; \
+		trap "rm -rf $$tmpdir" EXIT; \
 		"$(JAVA_HOME)/bin/javac" \
 			-classpath "$(ANDROID_SDK_ROOT)/platforms/android-$(ANDROID_TARGET_SDK)/android.jar" \
 			-d "$$tmpdir" \

README.md

@@ -90,10 +90,13 @@ go get -tool gioui.org/cmd/gogio@latest
 Package:
 
 ```bash
-go tool gogio -target android -icon internal/assets/keepassgo-icon.png ./cmd/keepassgo
+make apk
 ```
 
-You will need the Android SDK and NDK installed and configured for real device or release packaging.
+`make apk` prefers a local Java 25 install at `JAVA_HOME`. If that is not
+available, it falls back to the repo-managed Docker build image, which also
+uses Java 25. You still need the Android SDK and NDK installed and configured
+for real device or release packaging.
 
 ## Automation
 

android/application_snippets.xml

@@ -22,6 +22,10 @@
 				android:name="android.accessibilityservice"
 				android:resource="@xml/keepassgo_accessibility_service" />
 		</service>
+		<activity
+			android:name="org.julianfamily.keepassgo.KeePassGOAutofillPickerActivity"
+			android:exported="false"
+			android:label="Search KeePassGO" />
 		<provider
 			android:name="org.julianfamily.keepassgo.SharedVaultProvider"
 			android:authorities="org.julianfamily.keepassgo.share"

androidsrc/org/julianfamily/keepassgo/AutofillBindingStore.java

@@ -0,0 +1,116 @@
+package org.julianfamily.keepassgo;
+
+import android.content.Context;
+import android.util.JsonReader;
+import android.util.JsonWriter;
+import android.util.Log;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.OutputStreamWriter;
+import java.nio.charset.StandardCharsets;
+import java.time.Instant;
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+final class AutofillBindingStore {
+    private static final String TAG = "KeePassGOAutofill";
+
+    private AutofillBindingStore() {
+    }
+
+    static String entryIDForTarget(Context context, String rawTarget) {
+        Bindings bindings = read(context);
+        return bindings.apps.getOrDefault(normalize(rawTarget), "");
+    }
+
+    static void rememberBinding(Context context, String rawTarget, String entryID) {
+        String target = normalize(rawTarget);
+        if (target.isEmpty() || entryID == null || entryID.trim().isEmpty()) {
+            return;
+        }
+        Bindings bindings = read(context);
+        bindings.updatedAt = Instant.now().toString();
+        bindings.apps.put(target, entryID.trim());
+        write(context, bindings);
+    }
+
+    private static Bindings read(Context context) {
+        File path = path(context);
+        if (!path.isFile()) {
+            return new Bindings();
+        }
+        try (JsonReader reader = new JsonReader(new InputStreamReader(new FileInputStream(path), StandardCharsets.UTF_8))) {
+            Bindings bindings = new Bindings();
+            reader.beginObject();
+            while (reader.hasNext()) {
+                String name = reader.nextName();
+                if ("updatedAt".equals(name)) {
+                    bindings.updatedAt = nextString(reader);
+                    continue;
+                }
+                if ("apps".equals(name)) {
+                    reader.beginObject();
+                    while (reader.hasNext()) {
+                        bindings.apps.put(normalize(reader.nextName()), nextString(reader));
+                    }
+                    reader.endObject();
+                    continue;
+                }
+                reader.skipValue();
+            }
+            reader.endObject();
+            return bindings;
+        } catch (IOException err) {
+            Log.e(TAG, "failed to read autofill bindings", err);
+            return new Bindings();
+        }
+    }
+
+    private static void write(Context context, Bindings bindings) {
+        File path = path(context);
+        File parent = path.getParentFile();
+        if (parent != null && !parent.exists() && !parent.mkdirs()) {
+            Log.e(TAG, "failed to create autofill binding directory " + parent.getAbsolutePath());
+            return;
+        }
+        try (JsonWriter writer = new JsonWriter(new OutputStreamWriter(new FileOutputStream(path, false), StandardCharsets.UTF_8))) {
+            writer.setIndent("  ");
+            writer.beginObject();
+            writer.name("updatedAt").value(bindings.updatedAt);
+            writer.name("apps");
+            writer.beginObject();
+            for (Map.Entry<String, String> entry : bindings.apps.entrySet()) {
+                writer.name(entry.getKey()).value(entry.getValue());
+            }
+            writer.endObject();
+            writer.endObject();
+        } catch (IOException err) {
+            Log.e(TAG, "failed to write autofill bindings", err);
+        }
+    }
+
+    private static String nextString(JsonReader reader) throws IOException {
+        if (reader.peek() == android.util.JsonToken.NULL) {
+            reader.nextNull();
+            return "";
+        }
+        return reader.nextString();
+    }
+
+    private static File path(Context context) {
+        return new File(new File(context.getFilesDir(), "keepassgo"), "autofill-bindings.json");
+    }
+
+    private static String normalize(String rawTarget) {
+        return rawTarget == null ? "" : rawTarget.trim();
+    }
+
+    private static final class Bindings {
+        String updatedAt = "";
+        final Map<String, String> apps = new LinkedHashMap<>();
+    }
+}

androidsrc/org/julianfamily/keepassgo/AutofillCacheStore.java

@@ -10,6 +10,7 @@ import java.io.IOException;
 import java.io.InputStreamReader;
 import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
+import java.util.Comparator;
 import java.util.List;
 import java.util.Locale;
 
@@ -20,18 +21,7 @@ final class AutofillCacheStore {
     }
 
     static Entry findBestMatch(Context context, String webDomain) {
-        File cacheFile = findCacheFile(context);
+        List<Entry> entries = readEntries(context);
-        if (cacheFile == null) {
-            Log.i(TAG, "autofill cache file not found");
-            return null;
-        }
-        List<Entry> entries;
-        try {
-            entries = readEntries(cacheFile);
-        } catch (IOException err) {
-            Log.e(TAG, "failed to read autofill cache", err);
-            return null;
-        }
         if (entries.isEmpty()) {
             return null;
         }
@@ -57,6 +47,50 @@ final class AutofillCacheStore {
         return chooseEntry(target, parentHost);
     }
 
+    static Entry findByID(Context context, String entryID) {
+        if (entryID == null || entryID.trim().isEmpty()) {
+            return null;
+        }
+        for (Entry entry : readEntries(context)) {
+            if (entryID.equals(entry.id)) {
+                return entry;
+            }
+        }
+        return null;
+    }
+
+    static List<Entry> chooserCandidates(Context context, String rawTarget) {
+        List<Entry> entries = readEntries(context);
+        if (entries.isEmpty()) {
+            return entries;
+        }
+        Entry direct = findBestMatch(context, rawTarget);
+        if (direct != null) {
+            List<Entry> resolved = new ArrayList<>();
+            resolved.add(direct);
+            return resolved;
+        }
+        entries.sort(Comparator
+                .comparing((Entry entry) -> entry.title.toLowerCase(Locale.US))
+                .thenComparing(entry -> String.join("/", entry.path).toLowerCase(Locale.US))
+                .thenComparing(entry -> entry.id));
+        return entries;
+    }
+
+    private static List<Entry> readEntries(Context context) {
+        File cacheFile = findCacheFile(context);
+        if (cacheFile == null) {
+            Log.i(TAG, "autofill cache file not found");
+            return new ArrayList<>();
+        }
+        try {
+            return readEntries(cacheFile);
+        } catch (IOException err) {
+            Log.e(TAG, "failed to read autofill cache", err);
+            return new ArrayList<>();
+        }
+    }
+
     private static File findCacheFile(Context context) {
         List<File> candidates = new ArrayList<>();
         File filesDir = context.getFilesDir();
@@ -103,16 +137,21 @@ final class AutofillCacheStore {
     }
 
     private static Entry readEntry(JsonReader reader) throws IOException {
+        String id = "";
         String title = "";
         String username = "";
         String password = "";
         String host = "";
         String url = "";
         List<String> targets = new ArrayList<>();
+        List<String> path = new ArrayList<>();
         reader.beginObject();
         while (reader.hasNext()) {
             String name = reader.nextName();
             switch (name) {
+                case "id":
+                    id = nextString(reader);
+                    break;
                 case "title":
                     title = nextString(reader);
                     break;
@@ -135,13 +174,20 @@ final class AutofillCacheStore {
                     }
                     reader.endArray();
                     break;
+                case "path":
+                    reader.beginArray();
+                    while (reader.hasNext()) {
+                        path.add(nextString(reader));
+                    }
+                    reader.endArray();
+                    break;
                 default:
                     reader.skipValue();
                     break;
             }
         }
         reader.endObject();
-        return new Entry(title, username, password, host, url, targets);
+        return new Entry(id, title, username, password, host, url, targets, path);
     }
 
     private static String nextString(JsonReader reader) throws IOException {
@@ -293,20 +339,24 @@ final class AutofillCacheStore {
     }
 
     static final class Entry {
+        final String id;
         final String title;
         final String username;
         final String password;
         final String host;
         final String url;
         final List<String> targets;
+        final List<String> path;
 
-        Entry(String title, String username, String password, String host, String url, List<String> targets) {
+        Entry(String id, String title, String username, String password, String host, String url, List<String> targets, List<String> path) {
+            this.id = id;
             this.title = title;
             this.username = username;
             this.password = password;
             this.host = host;
             this.url = url;
             this.targets = new ArrayList<>(targets);
+            this.path = new ArrayList<>(path);
         }
     }
 

androidsrc/org/julianfamily/keepassgo/KeePassGOAutofillPickerActivity.java

@@ -0,0 +1,182 @@
+package org.julianfamily.keepassgo;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.os.Bundle;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.util.TypedValue;
+import android.view.Gravity;
+import android.view.View;
+import android.view.autofill.AutofillId;
+import android.view.autofill.AutofillManager;
+import android.view.autofill.AutofillValue;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
+import android.widget.EditText;
+import android.widget.LinearLayout;
+import android.widget.ListView;
+import android.widget.TextView;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Locale;
+
+import android.service.autofill.Dataset;
+
+public final class KeePassGOAutofillPickerActivity extends Activity {
+    static final String EXTRA_TARGET = "org.julianfamily.keepassgo.extra.AUTOFILL_TARGET";
+    static final String EXTRA_PACKAGE_NAME = "org.julianfamily.keepassgo.extra.AUTOFILL_PACKAGE";
+    static final String EXTRA_USERNAME_ID = "org.julianfamily.keepassgo.extra.USERNAME_ID";
+    static final String EXTRA_PASSWORD_ID = "org.julianfamily.keepassgo.extra.PASSWORD_ID";
+
+    private final List<AutofillCacheStore.Entry> allEntries = new ArrayList<>();
+    private final List<AutofillCacheStore.Entry> visibleEntries = new ArrayList<>();
+    private ArrayAdapter<String> adapter;
+    private String matchTarget = "";
+    private String packageName = "";
+    private AutofillId usernameID;
+    private AutofillId passwordID;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        Intent intent = getIntent();
+        matchTarget = intent.getStringExtra(EXTRA_TARGET);
+        packageName = intent.getStringExtra(EXTRA_PACKAGE_NAME);
+        usernameID = intent.getParcelableExtra(EXTRA_USERNAME_ID, AutofillId.class);
+        passwordID = intent.getParcelableExtra(EXTRA_PASSWORD_ID, AutofillId.class);
+
+        LinearLayout root = new LinearLayout(this);
+        root.setOrientation(LinearLayout.VERTICAL);
+        int padding = dp(16);
+        root.setPadding(padding, padding, padding, padding);
+
+        TextView title = new TextView(this);
+        title.setTextSize(TypedValue.COMPLEX_UNIT_SP, 20);
+        title.setGravity(Gravity.START);
+        title.setPadding(0, 0, 0, dp(8));
+        title.setText(packageName == null || packageName.trim().isEmpty() ? "Search KeePassGO" : "Search KeePassGO for " + packageName);
+        root.addView(title, new LinearLayout.LayoutParams(
+                LinearLayout.LayoutParams.MATCH_PARENT,
+                LinearLayout.LayoutParams.WRAP_CONTENT
+        ));
+
+        EditText search = new EditText(this);
+        search.setHint("Search entries");
+        root.addView(search, new LinearLayout.LayoutParams(
+                LinearLayout.LayoutParams.MATCH_PARENT,
+                LinearLayout.LayoutParams.WRAP_CONTENT
+        ));
+
+        allEntries.clear();
+        allEntries.addAll(AutofillCacheStore.chooserCandidates(this, matchTarget));
+        visibleEntries.clear();
+        visibleEntries.addAll(allEntries);
+
+        adapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, labelsFor(visibleEntries));
+        ListView list = new ListView(this);
+        list.setAdapter(adapter);
+        list.setOnItemClickListener(this::onEntrySelected);
+
+        TextView empty = new TextView(this);
+        empty.setPadding(0, dp(16), 0, 0);
+        empty.setText("No KeePassGO entries are available for autofill.");
+        empty.setVisibility(allEntries.isEmpty() ? View.VISIBLE : View.GONE);
+        list.setVisibility(allEntries.isEmpty() ? View.GONE : View.VISIBLE);
+        root.addView(empty, new LinearLayout.LayoutParams(
+                LinearLayout.LayoutParams.MATCH_PARENT,
+                LinearLayout.LayoutParams.WRAP_CONTENT
+        ));
+        LinearLayout.LayoutParams listParams = new LinearLayout.LayoutParams(
+                LinearLayout.LayoutParams.MATCH_PARENT,
+                0
+        );
+        listParams.weight = 1f;
+        listParams.topMargin = dp(12);
+        root.addView(list, listParams);
+
+        search.addTextChangedListener(new TextWatcher() {
+            @Override
+            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+            }
+
+            @Override
+            public void onTextChanged(CharSequence s, int start, int before, int count) {
+                filterEntries(s == null ? "" : s.toString());
+            }
+
+            @Override
+            public void afterTextChanged(Editable s) {
+            }
+        });
+
+        setContentView(root);
+    }
+
+    private void filterEntries(String rawQuery) {
+        String query = rawQuery == null ? "" : rawQuery.trim().toLowerCase(Locale.US);
+        visibleEntries.clear();
+        if (query.isEmpty()) {
+            visibleEntries.addAll(allEntries);
+        } else {
+            for (AutofillCacheStore.Entry entry : allEntries) {
+                if (entryLabel(entry).toLowerCase(Locale.US).contains(query)) {
+                    visibleEntries.add(entry);
+                }
+            }
+        }
+        adapter.clear();
+        adapter.addAll(labelsFor(visibleEntries));
+        adapter.notifyDataSetChanged();
+    }
+
+    private void onEntrySelected(AdapterView<?> parent, View view, int position, long id) {
+        if (position < 0 || position >= visibleEntries.size() || passwordID == null) {
+            setResult(Activity.RESULT_CANCELED);
+            finish();
+            return;
+        }
+        AutofillCacheStore.Entry entry = visibleEntries.get(position);
+        if (matchTarget != null && matchTarget.startsWith("androidapp://")) {
+            AutofillBindingStore.rememberBinding(this, matchTarget, entry.id);
+        }
+
+        Dataset.Builder dataset = new Dataset.Builder();
+        dataset.setId(entry.id);
+        if (usernameID != null && entry.username != null && !entry.username.isEmpty()) {
+            dataset.setValue(usernameID, AutofillValue.forText(entry.username));
+        }
+        dataset.setValue(passwordID, AutofillValue.forText(entry.password));
+
+        Intent result = new Intent();
+        result.putExtra(AutofillManager.EXTRA_AUTHENTICATION_RESULT, dataset.build());
+        setResult(Activity.RESULT_OK, result);
+        finish();
+    }
+
+    private static List<String> labelsFor(List<AutofillCacheStore.Entry> entries) {
+        List<String> labels = new ArrayList<>(entries.size());
+        for (AutofillCacheStore.Entry entry : entries) {
+            labels.add(entryLabel(entry));
+        }
+        return labels;
+    }
+
+    private static String entryLabel(AutofillCacheStore.Entry entry) {
+        StringBuilder label = new StringBuilder();
+        label.append(entry.title == null || entry.title.trim().isEmpty() ? "Untitled entry" : entry.title.trim());
+        if (entry.username != null && !entry.username.trim().isEmpty()) {
+            label.append(" (").append(entry.username.trim()).append(")");
+        }
+        if (entry.path != null && !entry.path.isEmpty()) {
+            label.append(" • ").append(String.join(" / ", entry.path));
+        }
+        return label.toString();
+    }
+
+    private int dp(int value) {
+        return Math.round(value * getResources().getDisplayMetrics().density);
+    }
+}

androidsrc/org/julianfamily/keepassgo/KeePassGOAutofillService.java

@@ -1,6 +1,8 @@
 package org.julianfamily.keepassgo;
 
+import android.app.PendingIntent;
 import android.app.assist.AssistStructure;
+import android.content.Intent;
 import android.os.CancellationSignal;
 import android.service.autofill.AutofillService;
 import android.service.autofill.Dataset;
@@ -66,29 +68,21 @@ public final class KeePassGOAutofillService extends AutofillService {
                 return;
             }
 
-            AutofillCacheStore.Entry entry = AutofillCacheStore.findBestMatch(this, target.matchTarget);
+            AutofillCacheStore.Entry entry = findBoundOrBestMatch(target.matchTarget);
             if (entry == null) {
+                FillResponse chooser = chooserResponse(target, fields);
+                if (chooser == null) {
                     Log.i(TAG, "no autofill cache match");
                     callback.onSuccess(null);
                     return;
                 }
+                Log.i(TAG, "returning chooser dataset for " + target.matchTarget);
+                callback.onSuccess(chooser);
+                return;
+            }
             Log.i(TAG, "matched entry title=" + entry.title + " user=" + entry.username + " host=" + entry.host);
 
-            RemoteViews presentation = new RemoteViews(getPackageName(), android.R.layout.simple_list_item_1);
+            FillResponse response = directFillResponse(entry, fields);
-            presentation.setTextViewText(
-                    android.R.id.text1,
-                    entry.title + " (" + entry.username + ")"
-            );
-
-            Dataset.Builder dataset = new Dataset.Builder(presentation);
-            if (fields.usernameId != null) {
-                dataset.setValue(fields.usernameId, AutofillValue.forText(entry.username));
-            }
-            dataset.setValue(fields.passwordId, AutofillValue.forText(entry.password));
-
-            FillResponse response = new FillResponse.Builder()
-                    .addDataset(dataset.build())
-                    .build();
             Log.i(TAG, "returning dataset");
             callback.onSuccess(response);
         } catch (Exception err) {
@@ -103,6 +97,72 @@ public final class KeePassGOAutofillService extends AutofillService {
         callback.onSuccess();
     }
 
+    private AutofillCacheStore.Entry findBoundOrBestMatch(String matchTarget) {
+        String entryID = AutofillBindingStore.entryIDForTarget(this, matchTarget);
+        if (!entryID.isEmpty()) {
+            AutofillCacheStore.Entry bound = AutofillCacheStore.findByID(this, entryID);
+            if (bound != null) {
+                return bound;
+            }
+        }
+        return AutofillCacheStore.findBestMatch(this, matchTarget);
+    }
+
+    private FillResponse directFillResponse(AutofillCacheStore.Entry entry, ParsedFields fields) {
+        RemoteViews presentation = new RemoteViews(getPackageName(), android.R.layout.simple_list_item_1);
+        presentation.setTextViewText(
+                android.R.id.text1,
+                entry.title + " (" + entry.username + ")"
+        );
+
+        Dataset.Builder dataset = new Dataset.Builder(presentation);
+        dataset.setId(entry.id);
+        if (fields.usernameId != null) {
+            dataset.setValue(fields.usernameId, AutofillValue.forText(entry.username));
+        }
+        dataset.setValue(fields.passwordId, AutofillValue.forText(entry.password));
+
+        return new FillResponse.Builder()
+                .addDataset(dataset.build())
+                .build();
+    }
+
+    private FillResponse chooserResponse(ParsedTarget target, ParsedFields fields) {
+        if (fields.passwordId == null) {
+            return null;
+        }
+        List<AutofillCacheStore.Entry> candidates = AutofillCacheStore.chooserCandidates(this, target.matchTarget);
+        if (candidates.isEmpty()) {
+            return null;
+        }
+
+        RemoteViews presentation = new RemoteViews(getPackageName(), android.R.layout.simple_list_item_1);
+        presentation.setTextViewText(android.R.id.text1, "Search KeePassGO");
+
+        Intent intent = new Intent(this, KeePassGOAutofillPickerActivity.class);
+        intent.putExtra(KeePassGOAutofillPickerActivity.EXTRA_TARGET, target.matchTarget);
+        intent.putExtra(KeePassGOAutofillPickerActivity.EXTRA_PACKAGE_NAME, target.packageName);
+        intent.putExtra(KeePassGOAutofillPickerActivity.EXTRA_USERNAME_ID, fields.usernameId);
+        intent.putExtra(KeePassGOAutofillPickerActivity.EXTRA_PASSWORD_ID, fields.passwordId);
+
+        PendingIntent pendingIntent = PendingIntent.getActivity(
+                this,
+                target.matchTarget.hashCode(),
+                intent,
+                PendingIntent.FLAG_UPDATE_CURRENT | PendingIntent.FLAG_MUTABLE
+        );
+
+        AutofillId[] ids;
+        if (fields.usernameId != null) {
+            ids = new AutofillId[]{fields.usernameId, fields.passwordId};
+        } else {
+            ids = new AutofillId[]{fields.passwordId};
+        }
+        return new FillResponse.Builder()
+                .setAuthentication(ids, pendingIntent.getIntentSender(), presentation)
+                .build();
+    }
+
     private static ParsedTarget parseWindow(AssistStructure structure, ParsedFields fields) {
         String domain = "";
         final int windowCount = structure.getWindowNodeCount();

go.mod

@@ -2,8 +2,12 @@ module git.julianfamily.org/keepassgo
 
 go 1.26
 
+replace gioui.org => git.julianfamily.org/joejulian/gio-patched v0.9.1-0.20260416220049-9bfa6bc1c2dc
+
+replace gioui.org/cmd => git.julianfamily.org/joejulian/gio-cmd-patched v0.9.1-0.20260416154203-192acd9d09b0
+
 require (
-	gioui.org v0.8.0
+	gioui.org v0.9.0
 	gioui.org/x v0.8.0
 	github.com/atotto/clipboard v0.1.4
 	github.com/tobischo/gokeepasslib/v3 v3.6.2
@@ -193,7 +197,6 @@ require (
 	go.uber.org/multierr v1.6.0 // indirect
 	go.uber.org/zap v1.24.0 // indirect
 	golang.org/x/crypto v0.48.0 // indirect
-	golang.org/x/exp v0.0.0-20250408133849-7e4ce0ab07d0 // indirect
 	golang.org/x/exp/typeparams v0.0.0-20250210185358-939b2ce775ac // indirect
 	golang.org/x/image v0.37.0 // indirect
 	golang.org/x/mod v0.33.0 // indirect

go.sum

@@ -37,15 +37,15 @@ cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
 eliasnaur.com/font v0.0.0-20230308162249-dd43949cb42d h1:ARo7NCVvN2NdhLlJE9xAbKweuI9L6UgfTbYb0YwPacY=
 eliasnaur.com/font v0.0.0-20230308162249-dd43949cb42d/go.mod h1:OYVuxibdk9OSLX8vAqydtRPP87PyTFcT9uH3MlEGBQA=
-gioui.org v0.8.0 h1:QV5p5JvsmSmGiIXVYOKn6d9YDliTfjtLlVf5J+BZ9Pg=
-gioui.org v0.8.0/go.mod h1:vEMmpxMOd/iwJhXvGVIzWEbxMWhnMQ9aByOGQdlQ8rc=
-gioui.org/cmd v0.8.0 h1:oy5qOlc1UXcglc5HBCMZQELiIzQ2obhT98mw+SuWafQ=
-gioui.org/cmd v0.8.0/go.mod h1:wKLAyAgRR25VMYFzGX2Ecia0m0Td562wDcZ3LaPHPTI=
 gioui.org/cpu v0.0.0-20210808092351-bfe733dd3334/go.mod h1:A8M0Cn5o+vY5LTMlnRoK3O5kG+rH0kWfJjeKd9QpBmQ=
 gioui.org/shader v1.0.8 h1:6ks0o/A+b0ne7RzEqRZK5f4Gboz2CfG+mVliciy6+qA=
 gioui.org/shader v1.0.8/go.mod h1:mWdiME581d/kV7/iEhLmUgUK5iZ09XR5XpduXzbePVM=
 gioui.org/x v0.8.0 h1:RhIlQNOFKKn8D8FeaKKaXCo7vB3x+fq4VcD10HW/YpA=
 gioui.org/x v0.8.0/go.mod h1:aXtQb+kyqoUOjDl5/uMqAopjzVzMkeHBbMQOGT5KnSE=
+git.julianfamily.org/joejulian/gio-cmd-patched v0.9.1-0.20260416154203-192acd9d09b0 h1:jZmX7CRuev3KrOW0yB2VQDtCrzRa4Q+qWcl3CGXq2sE=
+git.julianfamily.org/joejulian/gio-cmd-patched v0.9.1-0.20260416154203-192acd9d09b0/go.mod h1:RBQfFU8JCgMjQ2wKU9DG3zMC38TnY97E5MKoBGhGl3s=
+git.julianfamily.org/joejulian/gio-patched v0.9.1-0.20260416220049-9bfa6bc1c2dc h1:p2AaZUAXa/ExPybNyeB05+GjTSZGA9lCfDpWz49IT5Y=
+git.julianfamily.org/joejulian/gio-patched v0.9.1-0.20260416220049-9bfa6bc1c2dc/go.mod h1:BdI7mF5DCa3kxlo3G93XHL7khtZnk1gu4335pExk8gs=
 git.wow.st/gmp/jni v0.0.0-20210610011705-34026c7e22d0 h1:bGG/g4ypjrCJoSvFrP5hafr9PPB5aw8SjcOWWila7ZI=
 git.wow.st/gmp/jni v0.0.0-20210610011705-34026c7e22d0/go.mod h1:+axXBRUTIDlCeE73IKeD/os7LoEnTKdkp8/gQOFjqyo=
 github.com/4meepo/tagalign v1.4.2 h1:0hcLHPGMjDyM1gHG58cS73aQF8J4TdVR96TZViorO9E=
@@ -132,10 +132,12 @@ github.com/charithe/durationcheck v0.0.10 h1:wgw73BiocdBDQPik+zcEoBG/ob8uyBHf2iy
 github.com/charithe/durationcheck v0.0.10/go.mod h1:bCWXb7gYRysD1CU3C+u4ceO49LoGOY1C1L6uouGNreQ=
 github.com/chavacava/garif v0.1.0 h1:2JHa3hbYf5D9dsgseMKAmc/MZ109otzgNFk5s87H9Pc=
 github.com/chavacava/garif v0.1.0/go.mod h1:XMyYCkEL58DF0oyW4qDjjnPWONs2HBqYKI+UIPD+Gww=
-github.com/chromedp/cdproto v0.0.0-20191114225735-6626966fbae4 h1:QD3KxSJ59L2lxG6MXBjNHxiQO2RmxTQ3XcK+wO44WOg=
+github.com/chromedp/cdproto v0.0.0-20250429231605-6ed5b53462d4 h1:UZdrvid2JFwnvPlUSEFlE794XZL4Jmrj8fuxfcLECJE=
-github.com/chromedp/cdproto v0.0.0-20191114225735-6626966fbae4/go.mod h1:PfAWWKJqjlGFYJEidUM6aVIWPr0EpobeyVWEEmplX7g=
+github.com/chromedp/cdproto v0.0.0-20250429231605-6ed5b53462d4/go.mod h1:NItd7aLkcfOA/dcMXvl8p1u+lQqioRMq/SqDp71Pb/k=
-github.com/chromedp/chromedp v0.5.2 h1:W8xBXQuUnd2dZK0SN/lyVwsQM7KgW+kY5HGnntms194=
+github.com/chromedp/chromedp v0.13.6 h1:xlNunMyzS5bu3r/QKrb3fzX6ow3WBQ6oao+J65PGZxk=
-github.com/chromedp/chromedp v0.5.2/go.mod h1:rsTo/xRo23KZZwFmWk2Ui79rBaVRRATCjLzNQlOFSiA=
+github.com/chromedp/chromedp v0.13.6/go.mod h1:h8GPP6ZtLMLsU8zFbTcb7ZDGCvCy8j/vRoFmRltQx9A=
+github.com/chromedp/sysutil v1.1.0 h1:PUFNv5EcprjqXZD9nJb9b/c9ibAbxiYo4exNWZyipwM=
+github.com/chromedp/sysutil v1.1.0/go.mod h1:WiThHUdltqCNKGc4gaU50XgYjwjYIhKWoHGPTUfWTJ8=
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
 github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
 github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
@@ -180,6 +182,8 @@ github.com/go-critic/go-critic v0.12.0/go.mod h1:DpE0P6OVc6JzVYzmM5gq5jMU31zLr4a
 github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20191125211704-12ad95a8df72/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
+github.com/go-json-experiment/json v0.0.0-20250417205406-170dfdcf87d1 h1:+VexzzkMLb1tnvpuQdGT/DicIRW7MN8ozsXqBMgp0Hk=
+github.com/go-json-experiment/json v0.0.0-20250417205406-170dfdcf87d1/go.mod h1:TiCD2a1pcmjd7YnhGH0f/zKNcCD06B029pHhzV23c2M=
 github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-kit/kit v0.9.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-kit/log v0.1.0/go.mod h1:zbhenjAZHb184qTLMA9ZjW7ThYL0H2mk7Q6pNt4vbaY=
@@ -224,12 +228,12 @@ github.com/go-xmlfmt/xmlfmt v1.1.3 h1:t8Ey3Uy7jDSEisW2K3somuMKIpzktkWptA0iFCnRUW
 github.com/go-xmlfmt/xmlfmt v1.1.3/go.mod h1:aUCEOzzezBEjDBbFBoSiya/gduyIiWYRP6CnSFIV8AM=
 github.com/gobwas/glob v0.2.3 h1:A4xDbljILXROh+kObIiy5kIaPYD8e96x1tgBhUI5J+Y=
 github.com/gobwas/glob v0.2.3/go.mod h1:d3Ez4x06l9bZtSvzIay5+Yzi0fmZzPgnTbPcKjJAkT8=
-github.com/gobwas/httphead v0.0.0-20180130184737-2c6c146eadee h1:s+21KNqlpePfkah2I+gwHF8xmJWRjooY+5248k6m4A0=
+github.com/gobwas/httphead v0.1.0 h1:exrUm0f4YX0L7EBwZHuCF4GDp8aJfVeBrlLQrs6NqWU=
-github.com/gobwas/httphead v0.0.0-20180130184737-2c6c146eadee/go.mod h1:L0fX3K22YWvt/FAX9NnzrNzcI4wNYi9Yku4O0LKYflo=
+github.com/gobwas/httphead v0.1.0/go.mod h1:O/RXo79gxV8G+RqlR/otEwx4Q36zl9rqC5u12GKvMCM=
-github.com/gobwas/pool v0.2.0 h1:QEmUOlnSjWtnpRGHF3SauEiOsy82Cup83Vf2LcMlnc8=
+github.com/gobwas/pool v0.2.1 h1:xfeeEhW7pwmX8nuLVlqbzVc7udMDrwetjEv+TZIz1og=
-github.com/gobwas/pool v0.2.0/go.mod h1:q8bcK0KcYlCgd9e7WYLm9LpyS+YeLd8JVDW6WezmKEw=
+github.com/gobwas/pool v0.2.1/go.mod h1:q8bcK0KcYlCgd9e7WYLm9LpyS+YeLd8JVDW6WezmKEw=
-github.com/gobwas/ws v1.0.2 h1:CoAavW/wd/kulfZmSIBt6p24n4j7tHgNVCjsfHVNUbo=
+github.com/gobwas/ws v1.4.0 h1:CTaoG1tojrh4ucGPcoJFiAQUAsEWekEWvLy7GsVNqGs=
-github.com/gobwas/ws v1.0.2/go.mod h1:szmBTxLgaFppYjEmNtny/v3w89xOydFnnZMcgRRu/EM=
+github.com/gobwas/ws v1.4.0/go.mod h1:G3gNqMNtPppf5XUz7O4shetPpcZ1VJ7zt18dlUeakrc=
 github.com/godbus/dbus/v5 v5.0.6 h1:mkgN1ofwASrYnJ5W6U/BxG15eXXXjirgZc7CLqkcaro=
 github.com/godbus/dbus/v5 v5.0.6/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
 github.com/gofrs/flock v0.12.1 h1:MTLVXXHf8ekldpJk3AKicLij9MdwOWkZ+a/jHHZby9E=
@@ -370,8 +374,6 @@ github.com/kisielk/errcheck v1.9.0/go.mod h1:kQxWMMVZgIkDq7U8xtG/n2juOjbLgZtedi0
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
 github.com/kkHAIKE/contextcheck v1.1.6 h1:7HIyRcnyzxL9Lz06NGhiKvenXq7Zw6Q0UQu/ttjfJCE=
 github.com/kkHAIKE/contextcheck v1.1.6/go.mod h1:3dDbMRNBFaq8HFXWC1JyvDSPm43CmE6IuHam8Wr0rkg=
-github.com/knq/sysutil v0.0.0-20191005231841-15668db23d08 h1:V0an7KRw92wmJysvFvtqtKMAPmvS5O0jtB0nYo6t+gs=
-github.com/knq/sysutil v0.0.0-20191005231841-15668db23d08/go.mod h1:dFWs1zEqDjFtnBXsd1vPOZaLsESovai349994nHx3e0=
 github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/konsorten/go-windows-terminal-sequences v1.0.3/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFBFZlji/RkVcI2GknAs/DXo4wKdlNEc=
@@ -404,8 +406,6 @@ github.com/macabu/inamedparam v0.1.3 h1:2tk/phHkMlEL/1GNe/Yf6kkR/hkcUdAEY3L0hjYV
 github.com/macabu/inamedparam v0.1.3/go.mod h1:93FLICAIk/quk7eaPPQvbzihUdn/QkGDwIZEoLtpH6I=
 github.com/magiconair/properties v1.8.6 h1:5ibWZ6iY0NctNGWo87LalDlEZ6R41TqbbDamhfG/Qzo=
 github.com/magiconair/properties v1.8.6/go.mod h1:y3VJvCyxH9uVvJTWEGAELF3aiYNyPKd5NZ3oSwXrF60=
-github.com/mailru/easyjson v0.7.0 h1:aizVhC/NAAcKWb+5QsU1iNOZb4Yws5UO2I+aIprQITM=
-github.com/mailru/easyjson v0.7.0/go.mod h1:KAzv3t3aY1NaHWoQz1+4F1ccyAH66Jk7yos7ldAVICs=
 github.com/maratori/testableexamples v1.0.0 h1:dU5alXRrD8WKSjOUnmJZuzdxWOEQ57+7s93SLMxb2vI=
 github.com/maratori/testableexamples v1.0.0/go.mod h1:4rhjL1n20TUTT4vdh3RDqSizKLyXp7K2u6HgraZCGzE=
 github.com/maratori/testpackage v1.1.1 h1:S58XVV5AD7HADMmD0fNnziNHqKvSdDuEKdPD1rNTU04=

internal/autofillcache/bindings.go

@@ -0,0 +1,87 @@
+package autofillcache
+
+import (
+	"encoding/json"
+	"os"
+	"path/filepath"
+	"slices"
+	"strings"
+	"time"
+)
+
+type BindingsFile struct {
+	UpdatedAt string            `json:"updatedAt"`
+	Apps      map[string]string `json:"apps,omitempty"`
+}
+
+func ReadBindings(path string) (BindingsFile, error) {
+	data, err := os.ReadFile(path)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return BindingsFile{}, nil
+		}
+		return BindingsFile{}, err
+	}
+	var bindings BindingsFile
+	if err := json.Unmarshal(data, &bindings); err != nil {
+		return BindingsFile{}, err
+	}
+	if bindings.Apps == nil {
+		bindings.Apps = make(map[string]string)
+	}
+	return bindings, nil
+}
+
+func RememberBinding(path, rawTarget, entryID string, now time.Time) error {
+	bindings, err := ReadBindings(path)
+	if err != nil {
+		return err
+	}
+	if bindings.Apps == nil {
+		bindings.Apps = make(map[string]string)
+	}
+	target := strings.TrimSpace(rawTarget)
+	id := strings.TrimSpace(entryID)
+	if target == "" || id == "" {
+		return nil
+	}
+	bindings.Apps[target] = id
+	bindings.UpdatedAt = now.UTC().Format(time.RFC3339)
+	data, err := json.MarshalIndent(bindings, "", "  ")
+	if err != nil {
+		return err
+	}
+	if err := os.MkdirAll(filepath.Dir(path), 0o755); err != nil {
+		return err
+	}
+	return os.WriteFile(path, data, 0o600)
+}
+
+func ResolveWithBindings(cache File, bindings BindingsFile, rawTarget string) MatchResult {
+	target := strings.TrimSpace(rawTarget)
+	if entryID := strings.TrimSpace(bindings.Apps[target]); entryID != "" {
+		for _, entry := range cache.Entries {
+			if entry.ID == entryID {
+				return MatchResult{Status: MatchStatusFound, Entry: entry}
+			}
+		}
+	}
+	return Resolve(cache, rawTarget)
+}
+
+func ChooserCandidates(cache File, rawTarget string) []Entry {
+	if result := Resolve(cache, rawTarget); result.Status == MatchStatusFound {
+		return []Entry{result.Entry}
+	}
+	candidates := append([]Entry(nil), cache.Entries...)
+	slices.SortFunc(candidates, func(left, right Entry) int {
+		if cmp := strings.Compare(strings.ToLower(strings.TrimSpace(left.Title)), strings.ToLower(strings.TrimSpace(right.Title))); cmp != 0 {
+			return cmp
+		}
+		if cmp := strings.Compare(strings.ToLower(strings.Join(left.Path, "/")), strings.ToLower(strings.Join(right.Path, "/"))); cmp != 0 {
+			return cmp
+		}
+		return strings.Compare(left.ID, right.ID)
+	})
+	return candidates
+}

internal/autofillcache/bindings_test.go

@@ -0,0 +1,102 @@
+package autofillcache
+
+import (
+	"path/filepath"
+	"testing"
+	"time"
+)
+
+func TestResolvePrefersLearnedAndroidAppBinding(t *testing.T) {
+	t.Parallel()
+
+	cache := File{
+		Entries: []Entry{
+			{
+				ID:       "danny-ocean",
+				Title:    "Bellagio Vault",
+				Username: "danny",
+				Password: "secret1",
+				URL:      "https://bellagio.example.invalid/login",
+				Host:     "bellagio.example.invalid",
+			},
+			{
+				ID:       "rusty-ryan",
+				Title:    "Mirage Crew",
+				Username: "rusty",
+				Password: "secret2",
+				URL:      "https://mirage.example.invalid/login",
+				Host:     "mirage.example.invalid",
+			},
+		},
+	}
+	bindings := BindingsFile{
+		Apps: map[string]string{
+			"androidapp://com.samsung.android.shealth": "rusty-ryan",
+		},
+	}
+
+	got := ResolveWithBindings(cache, bindings, "androidapp://com.samsung.android.shealth")
+	if got.Status != MatchStatusFound {
+		t.Fatalf("ResolveWithBindings() status = %q, want found", got.Status)
+	}
+	if got.Entry.ID != "rusty-ryan" {
+		t.Fatalf("ResolveWithBindings() entry = %q, want rusty-ryan", got.Entry.ID)
+	}
+}
+
+func TestChooserCandidatesFallBackToAllEntriesForUnknownAndroidApp(t *testing.T) {
+	t.Parallel()
+
+	cache := File{
+		Entries: []Entry{
+			{
+				ID:       "basher-tarr",
+				Title:    "Bellagio Vault",
+				Username: "basher",
+				Password: "secret1",
+				URL:      "https://bellagio.example.invalid/login",
+				Host:     "bellagio.example.invalid",
+				Path:     []string{"Crew"},
+			},
+			{
+				ID:       "linus-caldwell",
+				Title:    "Bank Floor",
+				Username: "linus",
+				Password: "secret2",
+				URL:      "https://bank.example.invalid/sign-in",
+				Host:     "bank.example.invalid",
+				Path:     []string{"Operations"},
+			},
+		},
+	}
+
+	got := ChooserCandidates(cache, "androidapp://com.samsung.android.shealth")
+	if len(got) != 2 {
+		t.Fatalf("len(ChooserCandidates()) = %d, want 2", len(got))
+	}
+	if got[0].ID != "linus-caldwell" || got[1].ID != "basher-tarr" {
+		t.Fatalf("ChooserCandidates() = %#v, want title-sorted fallback candidates", got)
+	}
+}
+
+func TestRememberBindingPersistsAndroidAppSelection(t *testing.T) {
+	t.Parallel()
+
+	path := filepath.Join(t.TempDir(), "autofill-bindings.json")
+	now := time.Date(2026, time.April, 13, 18, 0, 0, 0, time.UTC)
+
+	if err := RememberBinding(path, "androidapp://com.samsung.android.shealth", "saul-bloom", now); err != nil {
+		t.Fatalf("RememberBinding() error = %v", err)
+	}
+
+	got, err := ReadBindings(path)
+	if err != nil {
+		t.Fatalf("ReadBindings() error = %v", err)
+	}
+	if got.UpdatedAt != now.UTC().Format(time.RFC3339) {
+		t.Fatalf("UpdatedAt = %q, want %q", got.UpdatedAt, now.UTC().Format(time.RFC3339))
+	}
+	if got.Apps["androidapp://com.samsung.android.shealth"] != "saul-bloom" {
+		t.Fatalf("binding = %#v, want samsung health -> saul-bloom", got.Apps)
+	}
+}

packaging/docker/android-apk/Dockerfile

@@ -0,0 +1,16 @@
+FROM golang:1.26-bookworm AS gobase
+
+FROM eclipse-temurin:25-jdk
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    findutils \
+    git \
+    make \
+ && rm -rf /var/lib/apt/lists/*
+
+COPY --from=gobase /usr/local/go /usr/local/go
+
+ENV JAVA_HOME=/opt/java/openjdk
+ENV PATH=/usr/local/go/bin:${PATH}
+
+WORKDIR /workspace