Added licenses screen

app/src/main/assets/licenses.xml

@@ -0,0 +1,111 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<libraries>
+    <library
+        name="AntennaPod"
+        author="The AntennaPod team"
+        website="https://github.com/AntennaPod/AntennaPod/"
+        license="MIT"
+        licenseText="LICENSE.txt" />
+    <library
+        name="AntennaPod-AudioPlayer"
+        author="The AntennaPod team"
+        website="https://github.com/AntennaPod/AntennaPod-AudioPlayer/"
+        license="Apache 2.0"
+        licenseText="LICENSE_APACHE-2.0.txt" />
+    <library
+        name="Apache Commons"
+        author="The Apache Software Foundation"
+        website="http://commons.apache.org/"
+        license="Apache 2.0"
+        licenseText="LICENSE_APACHE-2.0.txt" />
+    <library
+        name="EventBus"
+        author="greenrobot"
+        website="https://github.com/greenrobot/EventBus"
+        license="Apache 2.0"
+        licenseText="LICENSE_APACHE-2.0.txt" />
+    <library
+        name="ExoPlayer"
+        author="Google"
+        website="https://github.com/google/ExoPlayer"
+        license="Apache 2.0"
+        licenseText="LICENSE_APACHE-2.0.txt" />
+    <library
+        name="Floating Action Button Speed Dial"
+        author="Roberto Leinardi"
+        website="https://github.com/leinardi/FloatingActionButtonSpeedDial"
+        license="Apache 2.0"
+        licenseText="LICENSE_APACHE-2.0.txt" />
+    <library
+        name="Glide"
+        author="bumptech"
+        website="https://github.com/bumptech/glide/"
+        license="Simplified BSD"
+        licenseText="LICENSE_GLIDE.txt" />
+    <library
+        name="Iconify"
+        author="Joan Zapata"
+        website="https://github.com/JoanZapata/android-iconify"
+        license="Apache 2.0"
+        licenseText="LICENSE_ANDROID_ICONIFY.txt" />
+    <library
+        name="jsoup"
+        author="Jonathan Hedley"
+        website="http://jsoup.org/"
+        license="MIT"
+        licenseText="LICENSE_JSOUP.txt" />
+    <library
+        name="Material Design Icons"
+        author="Google"
+        website="https://github.com/google/material-design-icons"
+        license="Attribution-ShareAlike 4.0 International"
+        licenseText="LICENSE_MATERIAL_DESIGN_ICONS.txt" />
+    <library
+        name="Material Design Icons"
+        author="Templarian"
+        website="https://github.com/Templarian/MaterialDesign"
+        license="SIL Open Font, Version 1.1"
+        licenseText="LICENSE_SIL.txt" />
+    <library
+        name="OkHttp"
+        author="Square"
+        website="https://github.com/square/okhttp"
+        license="Apache 2.0"
+        licenseText="LICENSE_OKHTTP.txt" />
+    <library
+        name="Okio"
+        author="Square"
+        website="https://github.com/square/okio"
+        license="Apache 2.0"
+        licenseText="LICENSE_APACHE-2.0.txt" />
+    <library
+        name="Presto Client"
+        author="aocate"
+        website="http://www.aocate.com/presto/"
+        license="Apache 2.0"
+        licenseText="LICENSE_PRESTO.txt" />
+    <library
+        name="RecyclerView-FlexibleDivider"
+        author="yqritc"
+        website="https://github.com/yqritc/RecyclerView-FlexibleDivider"
+        license="Apache 2.0"
+        licenseText="LICENSE_APACHE-2.0.txt" />
+    <library
+        name="RxAndroid"
+        author="ReactiveX"
+        website="https://github.com/ReactiveX/RxAndroid"
+        license="Apache 2.0"
+        licenseText="LICENSE_APACHE-2.0.txt" />
+    <library
+        name="StackBlur"
+        author="Enrique López Mañas"
+        website="https://github.com/kikoso/android-stackblur"
+        license="Apache 2.0"
+        licenseText="LICENSE_APACHE-2.0.txt" />
+    <library
+        name="Triangle Label View"
+        author="Shota Saito"
+        website="https://github.com/shts/TriangleLabelView"
+        license="Apache 2.0"
+        licenseText="LICENSE_TRIANGLE_LABEL_VIEW.txt" />
+</libraries>

app/src/main/java/de/danoeh/antennapod/adapter/SimpleIconListAdapter.java

@@ -11,19 +11,19 @@ import com.bumptech.glide.load.engine.DiskCacheStrategy;
 import com.bumptech.glide.request.RequestOptions;
 import de.danoeh.antennapod.R;
 
-import java.util.ArrayList;
+import java.util.List;
 
 /**
  * Displays a list of items that have a subtitle and an icon.
  */
-public class SimpleIconListAdapter extends ArrayAdapter<SimpleIconListAdapter.ListItem> {
+public class SimpleIconListAdapter<T extends SimpleIconListAdapter.ListItem> extends ArrayAdapter<T> {
     private final Context context;
-    private final ArrayList<ListItem> developers;
+    private final List<T> listItems;
 
-    public SimpleIconListAdapter(Context context, ArrayList<ListItem> developers) {
+    public SimpleIconListAdapter(Context context, List<T> listItems) {
-        super(context, R.layout.simple_icon_list_item, developers);
+        super(context, R.layout.simple_icon_list_item, listItems);
         this.context = context;
-        this.developers = developers;
+        this.listItems = listItems;
     }
 
     @Override
@@ -32,7 +32,7 @@ public class SimpleIconListAdapter extends ArrayAdapter<SimpleIconListAdapter.Li
             view = View.inflate(context, R.layout.simple_icon_list_item, null);
         }
 
-        ListItem item = developers.get(position);
+        ListItem item = listItems.get(position);
         ((TextView) view.findViewById(R.id.title)).setText(item.title);
         ((TextView) view.findViewById(R.id.subtitle)).setText(item.subtitle);
         Glide.with(context)
@@ -46,9 +46,9 @@ public class SimpleIconListAdapter extends ArrayAdapter<SimpleIconListAdapter.Li
     }
 
     public static class ListItem {
-        final String title;
+        public final String title;
-        final String subtitle;
+        public final String subtitle;
-        final String imageUrl;
+        public final String imageUrl;
 
         public ListItem(String title, String subtitle, String imageUrl) {
             this.title = title;

app/src/main/java/de/danoeh/antennapod/fragment/preferences/AboutDevelopersFragment.java

@@ -43,7 +43,7 @@ public class AboutDevelopersFragment extends ListFragment {
         .subscribeOn(Schedulers.io())
         .observeOn(AndroidSchedulers.mainThread())
         .subscribe(
-                developers -> setListAdapter(new SimpleIconListAdapter(getContext(), developers)),
+                developers -> setListAdapter(new SimpleIconListAdapter<>(getContext(), developers)),
                 error -> Toast.makeText(getContext(), "Error while loading developers", Toast.LENGTH_LONG).show()
         );
 

app/src/main/java/de/danoeh/antennapod/fragment/preferences/AboutFragment.java

@@ -9,6 +9,7 @@ import com.google.android.material.snackbar.Snackbar;
 import de.danoeh.antennapod.BuildConfig;
 import de.danoeh.antennapod.R;
 import de.danoeh.antennapod.activity.PreferenceActivity;
+import de.danoeh.antennapod.core.util.IntentUtils;
 
 public class AboutFragment extends PreferenceFragmentCompat {
 
@@ -36,6 +37,15 @@ public class AboutFragment extends PreferenceFragmentCompat {
                     .addToBackStack(getString(R.string.translators)).commit();
             return true;
         });
+        findPreference("about_privacy_policy").setOnPreferenceClickListener((preference) -> {
+            IntentUtils.openInBrowser(getContext(), "https://antennapod.org/privacy.html");
+            return true;
+        });
+        findPreference("about_licenses").setOnPreferenceClickListener((preference) -> {
+            getFragmentManager().beginTransaction().replace(R.id.content, new AboutLicensesFragment())
+                    .addToBackStack(getString(R.string.translators)).commit();
+            return true;
+        });
     }
 
     @Override

app/src/main/java/de/danoeh/antennapod/fragment/preferences/AboutLicensesFragment.java

@@ -0,0 +1,126 @@
+package de.danoeh.antennapod.fragment.preferences;
+
+import android.os.Bundle;
+import android.view.View;
+import android.widget.ListView;
+import android.widget.Toast;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AlertDialog;
+import androidx.fragment.app.ListFragment;
+import de.danoeh.antennapod.R;
+import de.danoeh.antennapod.activity.PreferenceActivity;
+import de.danoeh.antennapod.adapter.SimpleIconListAdapter;
+import de.danoeh.antennapod.core.util.IntentUtils;
+import io.reactivex.Single;
+import io.reactivex.SingleOnSubscribe;
+import io.reactivex.android.schedulers.AndroidSchedulers;
+import io.reactivex.disposables.Disposable;
+import io.reactivex.schedulers.Schedulers;
+import org.w3c.dom.NamedNodeMap;
+import org.w3c.dom.NodeList;
+
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.util.ArrayList;
+
+public class AboutLicensesFragment extends ListFragment {
+    private Disposable licensesLoader;
+    private final ArrayList<LicenseItem> licenses = new ArrayList<>();
+
+    @Override
+    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+        getListView().setDivider(null);
+
+        licensesLoader = Single.create((SingleOnSubscribe<ArrayList<LicenseItem>>) emitter -> {
+            licenses.clear();
+            InputStream stream = getContext().getAssets().open("licenses.xml");
+            DocumentBuilder docBuilder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
+            NodeList libraryList = docBuilder.parse(stream).getElementsByTagName("library");
+            for (int i = 0; i < libraryList.getLength(); i++) {
+                NamedNodeMap lib = libraryList.item(i).getAttributes();
+                licenses.add(new LicenseItem(
+                        lib.getNamedItem("name").getTextContent(),
+                        String.format("By %s, %s license",
+                                lib.getNamedItem("author").getTextContent(),
+                                lib.getNamedItem("license").getTextContent()),
+                        null,
+                        lib.getNamedItem("website").getTextContent(),
+                        lib.getNamedItem("licenseText").getTextContent()));
+            }
+            emitter.onSuccess(licenses);
+        })
+        .subscribeOn(Schedulers.io())
+        .observeOn(AndroidSchedulers.mainThread())
+        .subscribe(
+                developers -> setListAdapter(new SimpleIconListAdapter<LicenseItem>(getContext(), developers)),
+                error -> Toast.makeText(getContext(), "Error while loading licenses", Toast.LENGTH_LONG).show()
+        );
+
+    }
+
+    private static class LicenseItem extends SimpleIconListAdapter.ListItem {
+        final String licenseUrl;
+        final String licenseTextFile;
+
+        LicenseItem(String title, String subtitle, String imageUrl, String licenseUrl, String licenseTextFile) {
+            super(title, subtitle, imageUrl);
+            this.licenseUrl = licenseUrl;
+            this.licenseTextFile = licenseTextFile;
+        }
+    }
+
+    @Override
+    public void onListItemClick(@NonNull ListView l, @NonNull View v, int position, long id) {
+        super.onListItemClick(l, v, position, id);
+
+        LicenseItem item = licenses.get(position);
+        CharSequence[] items = {"View website", "View license"};
+        new AlertDialog.Builder(getContext())
+                .setTitle(item.title)
+                .setItems(items, (dialog, which) -> {
+                    if (which == 0) {
+                        IntentUtils.openInBrowser(getContext(), item.licenseUrl);
+                    } else if (which == 1) {
+                        showLicenseText(item.licenseTextFile);
+                    }
+                }).show();
+    }
+
+    private void showLicenseText(String licenseTextFile) {
+        try {
+            BufferedReader reader = new BufferedReader(new InputStreamReader(
+                    getContext().getAssets().open(licenseTextFile)));
+            StringBuilder licenseText = new StringBuilder();
+            String line;
+            while ((line = reader.readLine()) != null) {
+                licenseText.append(line).append("\n");
+            }
+
+            new AlertDialog.Builder(getContext())
+                    .setMessage(licenseText)
+                    .show();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    public void onStop() {
+        super.onStop();
+        if (licensesLoader != null) {
+            licensesLoader.dispose();
+        }
+    }
+
+    @Override
+    public void onStart() {
+        super.onStart();
+        ((PreferenceActivity) getActivity()).getSupportActionBar().setTitle(R.string.licenses);
+    }
+}

app/src/main/java/de/danoeh/antennapod/fragment/preferences/AboutTranslatorsFragment.java

@@ -42,7 +42,7 @@ public class AboutTranslatorsFragment extends ListFragment {
         .subscribeOn(Schedulers.io())
         .observeOn(AndroidSchedulers.mainThread())
         .subscribe(
-                translators -> setListAdapter(new SimpleIconListAdapter(getContext(), translators)),
+                translators -> setListAdapter(new SimpleIconListAdapter<>(getContext(), translators)),
                 error -> Toast.makeText(getContext(), "Error while loading translators", Toast.LENGTH_LONG).show()
         );
 

app/src/main/res/xml/preferences_about.xml

@@ -21,7 +21,7 @@
             android:title="@string/translators"/>
     <Preference
             android:key="about_privacy_policy"
-            android:icon="?attr/action_about"
+            android:icon="?attr/ic_questionmark"
             android:summary="https://antennapod.org/privacy.html"
             android:title="@string/privacy_policy"/>
     <Preference