Merge "Add "add service" pref to the autofill picker" into oc-dev

import android.Manifest;

import android.app.Activity;

import android.content.ComponentName;

import android.content.ContentResolver;

import android.content.Context;

import android.content.DialogInterface;

import android.content.Intent;

import android.content.pm.PackageManager;

import android.content.pm.ResolveInfo;

import android.content.pm.ServiceInfo;

import android.net.Uri;

import android.os.Bundle;

import android.os.Handler;

import android.os.Looper;

import android.provider.Settings;

import android.service.autofill.AutofillService;

import android.service.autofill.AutofillServiceInfo;

import android.support.v7.preference.Preference;

import android.text.Html;

import android.text.TextUtils;

import android.util.Log;

import com.android.internal.content.PackageMonitor;

import com.android.internal.logging.nano.MetricsProto;

import com.android.settings.R;

import com.android.settings.applications.defaultapps.DefaultAppPickerFragment.ConfirmationDialogFragment;

import java.util.ArrayList;

import java.util.List;

     * Set when the fragment is implementing ACTION_REQUEST_SET_AUTOFILL_SERVICE.

     */

    public DialogInterface.OnClickListener mCancelListener;

    private final Handler mHandler = new Handler();

    @Override

    public void onCreate(Bundle savedInstanceState) {

                activity.finish();

            };

        }

        mSettingsPackageMonitor.register(getActivity(), getActivity().getMainLooper(), false);

        update();

    }

    @Override

        return true;

    }

    /**

     * Monitor coming and going auto fill services and calls {@link #update()} when necessary

     */

    private final PackageMonitor mSettingsPackageMonitor = new PackageMonitor() {

        @Override

        public void onPackageAdded(String packageName, int uid) {

            mHandler.post(() -> update());

        }

        @Override

        public void onPackageModified(String packageName) {

            mHandler.post(() -> update());

        }

        @Override

        public void onPackageRemoved(String packageName, int uid) {

            mHandler.post(() -> update());

        }

    };

    /**

     * Update the data in this UI.

     */

    private void update() {

        updateCandidates();

        addAddServicePreference();

    }

    @Override

    public void onDestroy() {

        mSettingsPackageMonitor.unregister();

        super.onDestroy();

    }

    /**

     * Gets the preference that allows to add a new autofill service.

     *

     * @return The preference or {@code null} if no service can be added

     */

    private Preference newAddServicePreferenceOrNull() {

        final String searchUri = Settings.Secure.getString(getActivity().getContentResolver(),

                Settings.Secure.AUTOFILL_SERVICE_SEARCH_URI);

        if (TextUtils.isEmpty(searchUri)) {

            return null;

        }

        final Intent addNewServiceIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(searchUri));

        Preference preference = new Preference(getPrefContext());

        preference.setTitle(R.string.print_menu_item_add_service);

        preference.setIcon(R.drawable.ic_menu_add);

        preference.setOrder(Integer.MAX_VALUE -1);

        preference.setIntent(addNewServiceIntent);

        preference.setPersistent(false);

        return preference;

    }

    /**

     * Add a preference that allows the user to add a service if the market link for that is

     * configured.

     */

    private void addAddServicePreference() {

        final Preference addNewServicePreference = newAddServicePreferenceOrNull();

        if (addNewServicePreference != null) {

            getPreferenceScreen().addPreference(addNewServicePreference);

        }

    }

    @Override

    protected List<DefaultAppInfo> getCandidates() {

        final List<DefaultAppInfo> candidates = new ArrayList<>();