Merge pull request #2868 from mfietz/feature/2849-fix-code-warnings

Feature/2849 fix code warnings

16 files changed, 66 insertions, 80 deletions

diff --git a/app/src/main/java/de/danoeh/antennapod/fragment/AddFeedFragment.java b/app/src/main/java/de/danoeh/antennapod/fragment/AddFeedFragment.java
index a243ddcdc..ee2373da8 100644
--- a/app/src/main/java/de/danoeh/antennapod/fragment/AddFeedFragment.java
+++ b/app/src/main/java/de/danoeh/antennapod/fragment/AddFeedFragment.java
@@ -32,18 +32,18 @@ public class AddFeedFragment extends Fragment {
         super.onCreateView(inflater, container, savedInstanceState);
         View root = inflater.inflate(R.layout.addfeed, container, false);
 
-        final EditText etxtFeedurl = (EditText) root.findViewById(R.id.etxtFeedurl);
+        final EditText etxtFeedurl = root.findViewById(R.id.etxtFeedurl);
 
         Bundle args = getArguments();
         if (args != null && args.getString(ARG_FEED_URL) != null) {
             etxtFeedurl.setText(args.getString(ARG_FEED_URL));
         }
 
-        Button butSearchITunes = (Button) root.findViewById(R.id.butSearchItunes);
-        Button butBrowserGpoddernet = (Button) root.findViewById(R.id.butBrowseGpoddernet);
-        Button butSearchFyyd = (Button) root.findViewById(R.id.butSearchFyyd);
-        Button butOpmlImport = (Button) root.findViewById(R.id.butOpmlImport);
-        Button butConfirm = (Button) root.findViewById(R.id.butConfirm);
+        Button butSearchITunes = root.findViewById(R.id.butSearchItunes);
+        Button butBrowserGpoddernet = root.findViewById(R.id.butBrowseGpoddernet);
+        Button butSearchFyyd = root.findViewById(R.id.butSearchFyyd);
+        Button butOpmlImport = root.findViewById(R.id.butOpmlImport);
+        Button butConfirm = root.findViewById(R.id.butConfirm);
 
         final MainActivity activity = (MainActivity) getActivity();
         activity.getSupportActionBar().setTitle(R.string.add_feed_label);
diff --git a/app/src/main/java/de/danoeh/antennapod/fragment/AllEpisodesFragment.java b/app/src/main/java/de/danoeh/antennapod/fragment/AllEpisodesFragment.java
index 497891dbd..ff7af97f6 100644
--- a/app/src/main/java/de/danoeh/antennapod/fragment/AllEpisodesFragment.java
+++ b/app/src/main/java/de/danoeh/antennapod/fragment/AllEpisodesFragment.java
@@ -313,7 +313,7 @@ public class AllEpisodesFragment extends Fragment {
 
         View root = inflater.inflate(fragmentResource, container, false);
 
-        recyclerView = (RecyclerView) root.findViewById(android.R.id.list);
+        recyclerView = root.findViewById(android.R.id.list);
         RecyclerView.ItemAnimator animator = recyclerView.getItemAnimator();
         if (animator instanceof SimpleItemAnimator) {
             ((SimpleItemAnimator) animator).setSupportsChangeAnimations(false);
@@ -323,7 +323,7 @@ public class AllEpisodesFragment extends Fragment {
         recyclerView.setHasFixedSize(true);
         recyclerView.addItemDecoration(new HorizontalDividerItemDecoration.Builder(getActivity()).build());
 
-        progLoading = (ProgressBar) root.findViewById(R.id.progLoading);
+        progLoading = root.findViewById(R.id.progLoading);
 
         if (!itemsLoaded) {
             progLoading.setVisibility(View.VISIBLE);
diff --git a/app/src/main/java/de/danoeh/antennapod/fragment/CompletedDownloadsFragment.java b/app/src/main/java/de/danoeh/antennapod/fragment/CompletedDownloadsFragment.java
index f6d503b29..7c28ba21f 100644
--- a/app/src/main/java/de/danoeh/antennapod/fragment/CompletedDownloadsFragment.java
+++ b/app/src/main/java/de/danoeh/antennapod/fragment/CompletedDownloadsFragment.java
@@ -1,8 +1,6 @@
 package de.danoeh.antennapod.fragment;
 
 import android.content.Context;
-import android.content.res.TypedArray;
-import android.graphics.Color;
 import android.os.Bundle;
 import android.support.v4.app.ListFragment;
 import android.util.Log;
@@ -12,9 +10,6 @@ import android.view.MenuItem;
 import android.view.View;
 import android.widget.ListView;
 
-import com.joanzapata.iconify.IconDrawable;
-import com.joanzapata.iconify.fonts.FontAwesomeIcons;
-
 import java.util.List;
 
 import de.danoeh.antennapod.R;
@@ -22,7 +17,6 @@ import de.danoeh.antennapod.activity.MainActivity;
 import de.danoeh.antennapod.adapter.DownloadedEpisodesListAdapter;
 import de.danoeh.antennapod.core.feed.EventDistributor;
 import de.danoeh.antennapod.core.feed.FeedItem;
-import de.danoeh.antennapod.core.preferences.UserPreferences;
 import de.danoeh.antennapod.core.storage.DBReader;
 import de.danoeh.antennapod.core.storage.DBWriter;
 import de.danoeh.antennapod.core.util.FeedItemUtil;
diff --git a/app/src/main/java/de/danoeh/antennapod/fragment/CoverFragment.java b/app/src/main/java/de/danoeh/antennapod/fragment/CoverFragment.java
index 128c5f6bf..0230c9036 100644
--- a/app/src/main/java/de/danoeh/antennapod/fragment/CoverFragment.java
+++ b/app/src/main/java/de/danoeh/antennapod/fragment/CoverFragment.java
@@ -48,9 +48,9 @@ public class CoverFragment extends Fragment implements MediaplayerInfoContentFra
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
                              Bundle savedInstanceState) {
         root = inflater.inflate(R.layout.cover_fragment, container, false);
-        txtvPodcastTitle = (TextView) root.findViewById(R.id.txtvPodcastTitle);
-        txtvEpisodeTitle = (TextView) root.findViewById(R.id.txtvEpisodeTitle);
-        imgvCover = (ImageView) root.findViewById(R.id.imgvCover);
+        txtvPodcastTitle = root.findViewById(R.id.txtvPodcastTitle);
+        txtvEpisodeTitle = root.findViewById(R.id.txtvEpisodeTitle);
+        imgvCover = root.findViewById(R.id.imgvCover);
         return root;
     }
 
diff --git a/app/src/main/java/de/danoeh/antennapod/fragment/DownloadLogFragment.java b/app/src/main/java/de/danoeh/antennapod/fragment/DownloadLogFragment.java
index ae9c60f65..a5eaa161f 100644
--- a/app/src/main/java/de/danoeh/antennapod/fragment/DownloadLogFragment.java
+++ b/app/src/main/java/de/danoeh/antennapod/fragment/DownloadLogFragment.java
@@ -12,10 +12,10 @@ import android.view.MenuInflater;
 import android.view.MenuItem;
 import android.view.View;
 import android.widget.ListView;
+import android.widget.TextView;
 
 import java.util.List;
 
-import android.widget.TextView;
 import de.danoeh.antennapod.R;
 import de.danoeh.antennapod.adapter.DownloadLogAdapter;
 import de.danoeh.antennapod.core.feed.EventDistributor;
diff --git a/app/src/main/java/de/danoeh/antennapod/fragment/DownloadsFragment.java b/app/src/main/java/de/danoeh/antennapod/fragment/DownloadsFragment.java
index 9c4d00e31..aa6029c84 100644
--- a/app/src/main/java/de/danoeh/antennapod/fragment/DownloadsFragment.java
+++ b/app/src/main/java/de/danoeh/antennapod/fragment/DownloadsFragment.java
@@ -38,12 +38,12 @@ public class DownloadsFragment extends Fragment {
         super.onCreateView(inflater, container, savedInstanceState);
         View root = inflater.inflate(R.layout.pager_fragment, container, false);
 
-        viewPager = (ViewPager)root.findViewById(R.id.viewpager);
+        viewPager = root.findViewById(R.id.viewpager);
         DownloadsPagerAdapter pagerAdapter = new DownloadsPagerAdapter(getChildFragmentManager(), getResources());
         viewPager.setAdapter(pagerAdapter);
 
         // Give the TabLayout the ViewPager
-        tabLayout = (TabLayout) root.findViewById(R.id.sliding_tabs);
+        tabLayout = root.findViewById(R.id.sliding_tabs);
         tabLayout.setupWithViewPager(viewPager);
 
         return root;
diff --git a/app/src/main/java/de/danoeh/antennapod/fragment/EpisodesFragment.java b/app/src/main/java/de/danoeh/antennapod/fragment/EpisodesFragment.java
index 417ecff89..0610bfd24 100644
--- a/app/src/main/java/de/danoeh/antennapod/fragment/EpisodesFragment.java
+++ b/app/src/main/java/de/danoeh/antennapod/fragment/EpisodesFragment.java
@@ -46,11 +46,11 @@ public class EpisodesFragment extends Fragment {
         ((MainActivity) getActivity()).getSupportActionBar().setTitle(R.string.episodes_label);
 
         View rootView = inflater.inflate(R.layout.pager_fragment, container, false);
-        viewPager = (ViewPager)rootView.findViewById(R.id.viewpager);
+        viewPager = rootView.findViewById(R.id.viewpager);
         viewPager.setAdapter(new EpisodesPagerAdapter(getChildFragmentManager(), getResources()));
 
         // Give the TabLayout the ViewPager
-        tabLayout = (TabLayout) rootView.findViewById(R.id.sliding_tabs);
+        tabLayout = rootView.findViewById(R.id.sliding_tabs);
         tabLayout.setupWithViewPager(viewPager);
 
         return rootView;
diff --git a/app/src/main/java/de/danoeh/antennapod/fragment/ExternalPlayerFragment.java b/app/src/main/java/de/danoeh/antennapod/fragment/ExternalPlayerFragment.java
index 9e8c9731e..2055c560e 100644
--- a/app/src/main/java/de/danoeh/antennapod/fragment/ExternalPlayerFragment.java
+++ b/app/src/main/java/de/danoeh/antennapod/fragment/ExternalPlayerFragment.java
@@ -52,12 +52,12 @@ public class ExternalPlayerFragment extends Fragment {
                              Bundle savedInstanceState) {
         View root = inflater.inflate(R.layout.external_player_fragment,
                 container, false);
-        fragmentLayout = (ViewGroup) root.findViewById(R.id.fragmentLayout);
-        imgvCover = (ImageView) root.findViewById(R.id.imgvCover);
-        txtvTitle = (TextView) root.findViewById(R.id.txtvTitle);
-        butPlay = (ImageButton) root.findViewById(R.id.butPlay);
-        mFeedName = (TextView) root.findViewById(R.id.txtvAuthor);
-        mProgressBar = (ProgressBar) root.findViewById(R.id.episodeProgress);
+        fragmentLayout = root.findViewById(R.id.fragmentLayout);
+        imgvCover = root.findViewById(R.id.imgvCover);
+        txtvTitle = root.findViewById(R.id.txtvTitle);
+        butPlay = root.findViewById(R.id.butPlay);
+        mFeedName = root.findViewById(R.id.txtvAuthor);
+        mProgressBar = root.findViewById(R.id.episodeProgress);
 
         fragmentLayout.setOnClickListener(v -> {
             Log.d(TAG, "layoutInfo was clicked");
diff --git a/app/src/main/java/de/danoeh/antennapod/fragment/FyydSearchFragment.java b/app/src/main/java/de/danoeh/antennapod/fragment/FyydSearchFragment.java
index 6ee9ce467..80c66077e 100644
--- a/app/src/main/java/de/danoeh/antennapod/fragment/FyydSearchFragment.java
+++ b/app/src/main/java/de/danoeh/antennapod/fragment/FyydSearchFragment.java
@@ -75,7 +75,7 @@ public class FyydSearchFragment extends Fragment {
                              Bundle savedInstanceState) {
         // Inflate the layout for this fragment
         View root = inflater.inflate(R.layout.fragment_itunes_search, container, false);
-        gridView = (GridView) root.findViewById(R.id.gridView);
+        gridView = root.findViewById(R.id.gridView);
         adapter = new ItunesAdapter(getActivity(), new ArrayList<>());
         gridView.setAdapter(adapter);
 
@@ -87,10 +87,10 @@ public class FyydSearchFragment extends Fragment {
             intent.putExtra(OnlineFeedViewActivity.ARG_TITLE, podcast.title);
             startActivity(intent);
         });
-        progressBar = (ProgressBar) root.findViewById(R.id.progressBar);
-        txtvError = (TextView) root.findViewById(R.id.txtvError);
-        butRetry = (Button) root.findViewById(R.id.butRetry);
-        txtvEmpty = (TextView) root.findViewById(android.R.id.empty);
+        progressBar = root.findViewById(R.id.progressBar);
+        txtvError = root.findViewById(R.id.txtvError);
+        butRetry = root.findViewById(R.id.butRetry);
+        txtvEmpty = root.findViewById(android.R.id.empty);
 
         return root;
     }
diff --git a/app/src/main/java/de/danoeh/antennapod/fragment/ItemFragment.java b/app/src/main/java/de/danoeh/antennapod/fragment/ItemFragment.java
index 5075d022a..c1d9bb9ab 100644
--- a/app/src/main/java/de/danoeh/antennapod/fragment/ItemFragment.java
+++ b/app/src/main/java/de/danoeh/antennapod/fragment/ItemFragment.java
@@ -34,8 +34,6 @@ import com.bumptech.glide.Glide;
 import com.joanzapata.iconify.Iconify;
 import com.joanzapata.iconify.widget.IconButton;
 
-import de.danoeh.antennapod.core.service.playback.PlaybackService;
-import de.danoeh.antennapod.core.util.NetworkUtils;
 import org.apache.commons.lang3.ArrayUtils;
 
 import java.util.List;
@@ -53,16 +51,17 @@ import de.danoeh.antennapod.core.feed.FeedMedia;
 import de.danoeh.antennapod.core.glide.ApGlideSettings;
 import de.danoeh.antennapod.core.preferences.UserPreferences;
 import de.danoeh.antennapod.core.service.download.Downloader;
+import de.danoeh.antennapod.core.service.playback.PlaybackService;
 import de.danoeh.antennapod.core.storage.DBReader;
 import de.danoeh.antennapod.core.storage.DBTasks;
 import de.danoeh.antennapod.core.storage.DBWriter;
-import de.danoeh.antennapod.core.storage.DownloadRequestException;
 import de.danoeh.antennapod.core.storage.DownloadRequester;
 import de.danoeh.antennapod.core.util.Converter;
 import de.danoeh.antennapod.core.util.DateUtils;
 import de.danoeh.antennapod.core.util.Flavors;
 import de.danoeh.antennapod.core.util.IntentUtils;
 import de.danoeh.antennapod.core.util.LongList;
+import de.danoeh.antennapod.core.util.NetworkUtils;
 import de.danoeh.antennapod.core.util.ShareUtils;
 import de.danoeh.antennapod.core.util.playback.Timeline;
 import de.danoeh.antennapod.menuhandler.FeedItemMenuHandler;
@@ -166,25 +165,25 @@ public class ItemFragment extends Fragment implements OnSwipeGesture {
         super.onCreateView(inflater, container, savedInstanceState);
         View layout = inflater.inflate(R.layout.feeditem_fragment, container, false);
 
-        root = (ViewGroup) layout.findViewById(R.id.content_root);
+        root = layout.findViewById(R.id.content_root);
 
-        LinearLayout header = (LinearLayout) root.findViewById(R.id.header);
+        LinearLayout header = root.findViewById(R.id.header);
         if(feedItems.length > 0) {
             header.setOnTouchListener((v, event) -> headerGestureDetector.onTouchEvent(event));
         }
 
-        txtvPodcast = (TextView) layout.findViewById(R.id.txtvPodcast);
+        txtvPodcast = layout.findViewById(R.id.txtvPodcast);
         txtvPodcast.setOnClickListener(v -> openPodcast());
-        txtvTitle = (TextView) layout.findViewById(R.id.txtvTitle);
+        txtvTitle = layout.findViewById(R.id.txtvTitle);
         if(Build.VERSION.SDK_INT >= 23) {
             txtvTitle.setHyphenationFrequency(Layout.HYPHENATION_FREQUENCY_FULL);
         }
-        txtvDuration = (TextView) layout.findViewById(R.id.txtvDuration);
-        txtvPublished = (TextView) layout.findViewById(R.id.txtvPublished);
+        txtvDuration = layout.findViewById(R.id.txtvDuration);
+        txtvPublished = layout.findViewById(R.id.txtvPublished);
         if (Build.VERSION.SDK_INT >= 14) { // ellipsize is causing problems on old versions, see #448
             txtvTitle.setEllipsize(TextUtils.TruncateAt.END);
         }
-        webvDescription = (WebView) layout.findViewById(R.id.webvDescription);
+        webvDescription = layout.findViewById(R.id.webvDescription);
         if (UserPreferences.getTheme() == R.style.Theme_AntennaPod_Dark ||
                 UserPreferences.getTheme() == R.style.Theme_AntennaPod_TrueBlack) {
             if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.ICE_CREAM_SANDWICH_MR1) {
@@ -216,12 +215,12 @@ public class ItemFragment extends Fragment implements OnSwipeGesture {
         });
         registerForContextMenu(webvDescription);
 
-        imgvCover = (ImageView) layout.findViewById(R.id.imgvCover);
+        imgvCover = layout.findViewById(R.id.imgvCover);
         imgvCover.setOnClickListener(v -> openPodcast());
-        progbarDownload = (ProgressBar) layout.findViewById(R.id.progbarDownload);
-        progbarLoading = (ProgressBar) layout.findViewById(R.id.progbarLoading);
-        butAction1 = (IconButton) layout.findViewById(R.id.butAction1);
-        butAction2 = (IconButton) layout.findViewById(R.id.butAction2);
+        progbarDownload = layout.findViewById(R.id.progbarDownload);
+        progbarLoading = layout.findViewById(R.id.progbarLoading);
+        butAction1 = layout.findViewById(R.id.butAction1);
+        butAction2 = layout.findViewById(R.id.butAction2);
 
         butAction1.setOnClickListener(v -> {
             if (item == null) {
diff --git a/app/src/main/java/de/danoeh/antennapod/fragment/ItemlistFragment.java b/app/src/main/java/de/danoeh/antennapod/fragment/ItemlistFragment.java
index dbea23aeb..bc38af9f3 100644
--- a/app/src/main/java/de/danoeh/antennapod/fragment/ItemlistFragment.java
+++ b/app/src/main/java/de/danoeh/antennapod/fragment/ItemlistFragment.java
@@ -4,8 +4,6 @@ import android.annotation.SuppressLint;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
-import android.content.res.TypedArray;
-import android.graphics.Color;
 import android.graphics.LightingColorFilter;
 import android.os.Bundle;
 import android.support.v4.app.ListFragment;
@@ -26,18 +24,16 @@ import android.widget.RelativeLayout;
 import android.widget.TextView;
 
 import com.bumptech.glide.Glide;
-import com.joanzapata.iconify.IconDrawable;
 import com.joanzapata.iconify.Iconify;
-import com.joanzapata.iconify.fonts.FontAwesomeIcons;
 import com.joanzapata.iconify.widget.IconTextView;
 
-import de.danoeh.antennapod.activity.FeedSettingsActivity;
 import org.apache.commons.lang3.Validate;
 
 import java.util.List;
 
 import de.danoeh.antennapod.R;
 import de.danoeh.antennapod.activity.FeedInfoActivity;
+import de.danoeh.antennapod.activity.FeedSettingsActivity;
 import de.danoeh.antennapod.activity.MainActivity;
 import de.danoeh.antennapod.adapter.DefaultActionButtonCallback;
 import de.danoeh.antennapod.adapter.FeedItemlistAdapter;
@@ -55,7 +51,6 @@ import de.danoeh.antennapod.core.feed.FeedItemFilter;
 import de.danoeh.antennapod.core.feed.FeedMedia;
 import de.danoeh.antennapod.core.glide.ApGlideSettings;
 import de.danoeh.antennapod.core.glide.FastBlurTransformation;
-import de.danoeh.antennapod.core.preferences.UserPreferences;
 import de.danoeh.antennapod.core.service.download.DownloadService;
 import de.danoeh.antennapod.core.service.download.Downloader;
 import de.danoeh.antennapod.core.storage.DBReader;
@@ -480,14 +475,14 @@ public class ItemlistFragment extends ListFragment {
         View header = inflater.inflate(R.layout.feeditemlist_header, lv, false);
         lv.addHeaderView(header);
 
-        txtvTitle = (TextView) header.findViewById(R.id.txtvTitle);
-        TextView txtvAuthor = (TextView) header.findViewById(R.id.txtvAuthor);
-        imgvBackground = (ImageView) header.findViewById(R.id.imgvBackground);
-        imgvCover = (ImageView) header.findViewById(R.id.imgvCover);
-        ImageButton butShowInfo = (ImageButton) header.findViewById(R.id.butShowInfo);
-        ImageButton butShowSettings = (ImageButton) header.findViewById(R.id.butShowSettings);
-        txtvInformation = (TextView) header.findViewById(R.id.txtvInformation);
-        txtvFailure = (IconTextView) header.findViewById(R.id.txtvFailure);
+        txtvTitle = header.findViewById(R.id.txtvTitle);
+        TextView txtvAuthor = header.findViewById(R.id.txtvAuthor);
+        imgvBackground = header.findViewById(R.id.imgvBackground);
+        imgvCover = header.findViewById(R.id.imgvCover);
+        ImageButton butShowInfo = header.findViewById(R.id.butShowInfo);
+        ImageButton butShowSettings = header.findViewById(R.id.butShowSettings);
+        txtvInformation = header.findViewById(R.id.txtvInformation);
+        txtvFailure = header.findViewById(R.id.txtvFailure);
 
         txtvTitle.setText(feed.getTitle());
         txtvAuthor.setText(feed.getAuthor());
diff --git a/app/src/main/java/de/danoeh/antennapod/fragment/ItunesSearchFragment.java b/app/src/main/java/de/danoeh/antennapod/fragment/ItunesSearchFragment.java
index 08610c1f3..57cbdc9c3 100644
--- a/app/src/main/java/de/danoeh/antennapod/fragment/ItunesSearchFragment.java
+++ b/app/src/main/java/de/danoeh/antennapod/fragment/ItunesSearchFragment.java
@@ -109,7 +109,7 @@ public class ItunesSearchFragment extends Fragment {
                              Bundle savedInstanceState) {
         // Inflate the layout for this fragment
         View root = inflater.inflate(R.layout.fragment_itunes_search, container, false);
-        gridView = (GridView) root.findViewById(R.id.gridView);
+        gridView = root.findViewById(R.id.gridView);
         adapter = new ItunesAdapter(getActivity(), new ArrayList<>());
         gridView.setAdapter(adapter);
 
@@ -170,10 +170,10 @@ public class ItunesSearchFragment extends Fragment {
                         });
             }
         });
-        progressBar = (ProgressBar) root.findViewById(R.id.progressBar);
-        txtvError = (TextView) root.findViewById(R.id.txtvError);
-        butRetry = (Button) root.findViewById(R.id.butRetry);
-        txtvEmpty = (TextView) root.findViewById(android.R.id.empty);
+        progressBar = root.findViewById(R.id.progressBar);
+        txtvError = root.findViewById(R.id.txtvError);
+        butRetry = root.findViewById(R.id.butRetry);
+        txtvEmpty = root.findViewById(android.R.id.empty);
 
         loadToplist();
 
diff --git a/app/src/main/java/de/danoeh/antennapod/fragment/QueueFragment.java b/app/src/main/java/de/danoeh/antennapod/fragment/QueueFragment.java
index 00b4d9eee..c6db974c1 100644
--- a/app/src/main/java/de/danoeh/antennapod/fragment/QueueFragment.java
+++ b/app/src/main/java/de/danoeh/antennapod/fragment/QueueFragment.java
@@ -380,8 +380,8 @@ public class QueueFragment extends Fragment {
         ((MainActivity) getActivity()).getSupportActionBar().setTitle(R.string.queue_label);
 
         View root = inflater.inflate(R.layout.queue_fragment, container, false);
-        infoBar = (TextView) root.findViewById(R.id.info_bar);
-        recyclerView = (RecyclerView) root.findViewById(R.id.recyclerView);
+        infoBar = root.findViewById(R.id.info_bar);
+        recyclerView = root.findViewById(R.id.recyclerView);
         RecyclerView.ItemAnimator animator = recyclerView.getItemAnimator();
         if (animator instanceof SimpleItemAnimator) {
             ((SimpleItemAnimator) animator).setSupportsChangeAnimations(false);
@@ -494,9 +494,9 @@ public class QueueFragment extends Fragment {
         );
         itemTouchHelper.attachToRecyclerView(recyclerView);
 
-        txtvEmpty = (TextView) root.findViewById(android.R.id.empty);
+        txtvEmpty = root.findViewById(android.R.id.empty);
         txtvEmpty.setVisibility(View.GONE);
-        progLoading = (ProgressBar) root.findViewById(R.id.progLoading);
+        progLoading = root.findViewById(R.id.progLoading);
         progLoading.setVisibility(View.VISIBLE);
 
         return root;
diff --git a/app/src/main/java/de/danoeh/antennapod/fragment/SubscriptionFragment.java b/app/src/main/java/de/danoeh/antennapod/fragment/SubscriptionFragment.java
index aec2bb536..36a9c5ba8 100644
--- a/app/src/main/java/de/danoeh/antennapod/fragment/SubscriptionFragment.java
+++ b/app/src/main/java/de/danoeh/antennapod/fragment/SubscriptionFragment.java
@@ -1,7 +1,6 @@
 package de.danoeh.antennapod.fragment;
 
 import android.content.DialogInterface;
-import android.content.Intent;
 import android.os.Bundle;
 import android.support.v4.app.Fragment;
 import android.util.Log;
@@ -16,7 +15,6 @@ import android.widget.GridView;
 
 import de.danoeh.antennapod.R;
 import de.danoeh.antennapod.activity.MainActivity;
-import de.danoeh.antennapod.activity.MediaplayerInfoActivity;
 import de.danoeh.antennapod.adapter.SubscriptionsAdapter;
 import de.danoeh.antennapod.core.asynctask.FeedRemover;
 import de.danoeh.antennapod.core.dialog.ConfirmationDialog;
@@ -70,7 +68,7 @@ public class SubscriptionFragment extends Fragment {
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
                              Bundle savedInstanceState) {
         View root = inflater.inflate(R.layout.fragment_subscriptions, container, false);
-        subscriptionGridLayout = (GridView) root.findViewById(R.id.subscriptions_grid);
+        subscriptionGridLayout = root.findViewById(R.id.subscriptions_grid);
         registerForContextMenu(subscriptionGridLayout);
         return root;
     }
diff --git a/app/src/main/java/de/danoeh/antennapod/fragment/gpodnet/GpodnetMainFragment.java b/app/src/main/java/de/danoeh/antennapod/fragment/gpodnet/GpodnetMainFragment.java
index b48027668..4dc114f9b 100644
--- a/app/src/main/java/de/danoeh/antennapod/fragment/gpodnet/GpodnetMainFragment.java
+++ b/app/src/main/java/de/danoeh/antennapod/fragment/gpodnet/GpodnetMainFragment.java
@@ -31,12 +31,12 @@ public class GpodnetMainFragment extends Fragment {
         super.onCreateView(inflater, container, savedInstanceState);
         View root = inflater.inflate(R.layout.pager_fragment, container, false);
 
-        viewPager = (ViewPager)root.findViewById(R.id.viewpager);
+        viewPager = root.findViewById(R.id.viewpager);
         GpodnetPagerAdapter pagerAdapter = new GpodnetPagerAdapter(getChildFragmentManager(), getResources());
         viewPager.setAdapter(pagerAdapter);
 
         // Give the TabLayout the ViewPager
-        tabLayout = (TabLayout) root.findViewById(R.id.sliding_tabs);
+        tabLayout = root.findViewById(R.id.sliding_tabs);
         tabLayout.setupWithViewPager(viewPager);
 
         return root;
diff --git a/app/src/main/java/de/danoeh/antennapod/fragment/gpodnet/PodcastListFragment.java b/app/src/main/java/de/danoeh/antennapod/fragment/gpodnet/PodcastListFragment.java
index 055358c64..49851ebb4 100644
--- a/app/src/main/java/de/danoeh/antennapod/fragment/gpodnet/PodcastListFragment.java
+++ b/app/src/main/java/de/danoeh/antennapod/fragment/gpodnet/PodcastListFragment.java
@@ -78,10 +78,10 @@ public abstract class PodcastListFragment extends Fragment {
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         View root = inflater.inflate(R.layout.gpodnet_podcast_list, container, false);
 
-        gridView = (GridView) root.findViewById(R.id.gridView);
-        progressBar = (ProgressBar) root.findViewById(R.id.progressBar);
-        txtvError = (TextView) root.findViewById(R.id.txtvError);
-        butRetry = (Button) root.findViewById(R.id.butRetry);
+        gridView = root.findViewById(R.id.gridView);
+        progressBar = root.findViewById(R.id.progressBar);
+        txtvError = root.findViewById(R.id.txtvError);
+        butRetry = root.findViewById(R.id.butRetry);
 
         gridView.setOnItemClickListener((parent, view, position, id) ->
                 onPodcastSelected((GpodnetPodcast) gridView.getAdapter().getItem(position)));