--- /dev/null
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright 2016 Arnab Chakraborty. http://arnab.ch
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this
+ * software and associated documentation files (the "Software"), to deal in the Software
+ * without restriction, including without limitation the rights to use, copy, modify,
+ * merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies
+ * or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+package org.anbox.appmgr;
+
+import android.content.Context;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageManager;
+import android.support.v4.content.AsyncTaskLoader;
+
+import java.text.Collator;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Comparator;
+
+/**
+ * @credit http://developer.android.com/reference/android/content/AsyncTaskLoader.html
+ */
+public class AppsLoader extends AsyncTaskLoader<ArrayList<AppModel>> {
+ ArrayList<AppModel> mInstalledApps;
+
+ final PackageManager mPm;
+ PackageIntentReceiver mPackageObserver;
+
+ public AppsLoader(Context context) {
+ super(context);
+
+ mPm = context.getPackageManager();
+ }
+
+ @Override
+ public ArrayList<AppModel> loadInBackground() {
+ // retrieve the list of installed applications
+ List<ApplicationInfo> apps = mPm.getInstalledApplications(0);
+
+ if (apps == null) {
+ apps = new ArrayList<ApplicationInfo>();
+ }
+
+ final Context context = getContext();
+
+ // create corresponding apps and load their labels
+ ArrayList<AppModel> items = new ArrayList<AppModel>(apps.size());
+ for (int i = 0; i < apps.size(); i++) {
+ String pkg = apps.get(i).packageName;
+
+ // only apps which are launchable
+ if (context.getPackageManager().getLaunchIntentForPackage(pkg) != null) {
+ AppModel app = new AppModel(context, apps.get(i));
+ app.loadLabel(context);
+ items.add(app);
+ }
+ }
+
+ // sort the list
+ Collections.sort(items, ALPHA_COMPARATOR);
+
+ return items;
+ }
+
+ @Override
+ public void deliverResult(ArrayList<AppModel> apps) {
+ if (isReset()) {
+ // An async query came in while the loader is stopped. We
+ // don't need the result.
+ if (apps != null) {
+ onReleaseResources(apps);
+ }
+ }
+
+ ArrayList<AppModel> oldApps = apps;
+ mInstalledApps = apps;
+
+ if (isStarted()) {
+ // If the Loader is currently started, we can immediately
+ // deliver its results.
+ super.deliverResult(apps);
+ }
+
+ // At this point we can release the resources associated with
+ // 'oldApps' if needed; now that the new result is delivered we
+ // know that it is no longer in use.
+ if (oldApps != null) {
+ onReleaseResources(oldApps);
+ }
+ }
+
+ @Override
+ protected void onStartLoading() {
+ if (mInstalledApps != null) {
+ // If we currently have a result available, deliver it
+ // immediately.
+ deliverResult(mInstalledApps);
+ }
+
+ // watch for changes in app install and uninstall operation
+ if (mPackageObserver == null) {
+ mPackageObserver = new PackageIntentReceiver(this);
+ }
+
+ if (takeContentChanged() || mInstalledApps == null ) {
+ // If the data has changed since the last time it was loaded
+ // or is not currently available, start a load.
+ forceLoad();
+ }
+ }
+
+ @Override
+ protected void onStopLoading() {
+ // Attempt to cancel the current load task if possible.
+ cancelLoad();
+ }
+
+ @Override
+ public void onCanceled(ArrayList<AppModel> apps) {
+ super.onCanceled(apps);
+
+ // At this point we can release the resources associated with 'apps'
+ // if needed.
+ onReleaseResources(apps);
+ }
+
+ @Override
+ protected void onReset() {
+ // Ensure the loader is stopped
+ onStopLoading();
+
+ // At this point we can release the resources associated with 'apps'
+ // if needed.
+ if (mInstalledApps != null) {
+ onReleaseResources(mInstalledApps);
+ mInstalledApps = null;
+ }
+
+ // Stop monitoring for changes.
+ if (mPackageObserver != null) {
+ getContext().unregisterReceiver(mPackageObserver);
+ mPackageObserver = null;
+ }
+ }
+
+ /**
+ * Helper method to do the cleanup work if needed, for example if we're
+ * using Cursor, then we should be closing it here
+ *
+ * @param apps
+ */
+ protected void onReleaseResources(ArrayList<AppModel> apps) {
+ // do nothing
+ }
+
+
+ /**
+ * Perform alphabetical comparison of application entry objects.
+ */
+ public static final Comparator<AppModel> ALPHA_COMPARATOR = new Comparator<AppModel>() {
+ private final Collator sCollator = Collator.getInstance();
+ @Override
+ public int compare(AppModel object1, AppModel object2) {
+ return sCollator.compare(object1.getLabel(), object2.getLabel());
+ }
+ };
+}
Code Review / iec.git / blobdiff