Allow to retry image when decoding fails or open in the browser. Fixes #177 and fixes #120. Also fix a bug where the current page was not restored when changing settings.

app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderPresenter.java

@@ -13,6 +13,7 @@ import java.util.List;
 
 import javax.inject.Inject;
 
+import eu.kanade.tachiyomi.data.cache.ChapterCache;
 import eu.kanade.tachiyomi.data.database.DatabaseHelper;
 import eu.kanade.tachiyomi.data.database.models.Chapter;
 import eu.kanade.tachiyomi.data.database.models.Manga;
@@ -43,6 +44,7 @@ public class ReaderPresenter extends BasePresenter<ReaderActivity> {
     @Inject DownloadManager downloadManager;
     @Inject MangaSyncManager syncManager;
     @Inject SourceManager sourceManager;
+    @Inject ChapterCache chapterCache;
 
     @State Manga manga;
     @State Chapter activeChapter;
@@ -288,9 +290,15 @@ public class ReaderPresenter extends BasePresenter<ReaderActivity> {
     }
 
     public void retryPage(Page page) {
+        if (page != null) {
             page.setStatus(Page.QUEUE);
+            if (page.getImagePath() != null) {
+                File file = new File(page.getImagePath());
+                chapterCache.removeFileFromCache(file.getName());
+            }
             retryPageSubject.onNext(page);
         }
+    }
 
     // Called before loading another chapter or leaving the reader. It allows to do operations
     // over the chapter read like saving progress

app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/base/PageDecodeErrorLayout.java

@@ -0,0 +1,67 @@
+package eu.kanade.tachiyomi.ui.reader.viewer.base;
+
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+import android.support.v4.content.ContextCompat;
+import android.view.Gravity;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+
+import eu.kanade.tachiyomi.R;
+import eu.kanade.tachiyomi.data.source.model.Page;
+import eu.kanade.tachiyomi.ui.reader.ReaderActivity;
+import rx.functions.Action0;
+
+import static android.view.ViewGroup.LayoutParams.WRAP_CONTENT;
+
+public class PageDecodeErrorLayout extends LinearLayout {
+
+    private final int lightGreyColor;
+    private final int blackColor;
+
+    public PageDecodeErrorLayout(Context context) {
+        super(context);
+        setOrientation(LinearLayout.VERTICAL);
+        setGravity(Gravity.CENTER);
+
+        lightGreyColor = ContextCompat.getColor(context, R.color.light_grey);
+        blackColor = ContextCompat.getColor(context, R.color.primary_text);
+    }
+
+    public PageDecodeErrorLayout(Context context, Page page, int theme, Action0 retryListener) {
+        this(context);
+
+        TextView errorText = new TextView(context);
+        errorText.setGravity(Gravity.CENTER);
+        errorText.setText(R.string.decode_image_error);
+        errorText.setTextColor(theme == ReaderActivity.BLACK_THEME ? lightGreyColor : blackColor);
+
+        Button retryButton = new Button(context);
+        retryButton.setLayoutParams(new ViewGroup.LayoutParams(WRAP_CONTENT, WRAP_CONTENT));
+        retryButton.setText(R.string.action_retry);
+        retryButton.setOnClickListener((v) -> {
+            removeAllViews();
+            retryListener.call();
+        });
+
+        Button openInBrowserButton = new Button(context);
+        openInBrowserButton.setLayoutParams(new ViewGroup.LayoutParams(WRAP_CONTENT, WRAP_CONTENT));
+        openInBrowserButton.setText(R.string.action_open_in_browser);
+        openInBrowserButton.setOnClickListener((v) -> {
+            Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(page.getImageUrl()));
+            context.startActivity(intent);
+        });
+
+        if (page.getImageUrl() == null) {
+            openInBrowserButton.setVisibility(View.GONE);
+        }
+
+        addView(errorText);
+        addView(retryButton);
+        addView(openInBrowserButton);
+    }
+}

app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/pager/PagerReader.java

@@ -65,21 +65,21 @@ public abstract class PagerReader extends BaseReader {
                 .doOnNext(this::setDecoderClass)
                 .skip(1)
                 .distinctUntilChanged()
-                .subscribe(v -> pager.setAdapter(adapter)));
+                .subscribe(v -> refreshPages()));
 
         subscriptions.add(preferences.imageScaleType()
                 .asObservable()
                 .doOnNext(this::setImageScaleType)
                 .skip(1)
                 .distinctUntilChanged()
-                .subscribe(v -> pager.setAdapter(adapter)));
+                .subscribe(v -> refreshPages()));
 
         subscriptions.add(preferences.zoomStart()
                 .asObservable()
                 .doOnNext(this::setZoomStart)
                 .skip(1)
                 .distinctUntilChanged()
-                .subscribe(v -> pager.setAdapter(adapter)));
+                .subscribe(v -> refreshPages()));
 
         subscriptions.add(preferences.enableTransitions()
                 .asObservable()
@@ -147,6 +147,11 @@ public abstract class PagerReader extends BaseReader {
         pager.setCurrentItem(pageNumber, false);
     }
 
+    private void refreshPages() {
+        pager.setAdapter(adapter);
+        pager.setCurrentItem(currentPage, false);
+    }
+
     protected void onLeftSideTap() {
         moveToPrevious();
     }

app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/pager/PagerReaderFragment.java

@@ -4,7 +4,6 @@ import android.graphics.PointF;
 import android.os.Bundle;
 import android.support.annotation.Nullable;
 import android.support.v4.content.ContextCompat;
-import android.view.Gravity;
 import android.view.LayoutInflater;
 import android.view.MotionEvent;
 import android.view.View;
@@ -27,6 +26,7 @@ import eu.kanade.tachiyomi.R;
 import eu.kanade.tachiyomi.data.source.model.Page;
 import eu.kanade.tachiyomi.ui.base.fragment.BaseFragment;
 import eu.kanade.tachiyomi.ui.reader.ReaderActivity;
+import eu.kanade.tachiyomi.ui.reader.viewer.base.PageDecodeErrorLayout;
 import eu.kanade.tachiyomi.ui.reader.viewer.pager.horizontal.RightToLeftReader;
 import eu.kanade.tachiyomi.ui.reader.viewer.pager.vertical.VerticalReader;
 import rx.Observable;
@@ -103,13 +103,12 @@ public class PagerReaderFragment extends BaseFragment {
 
             @Override
             public void onImageLoadError(Exception e) {
-                showImageLoadError();
+                showImageDecodeError();
             }
         });
 
         retryButton.setOnTouchListener((v, event) -> {
             if (event.getAction() == MotionEvent.ACTION_UP) {
-                if (page != null)
                 activity.getPresenter().retryPage(page);
             }
             return true;
@@ -175,18 +174,16 @@ public class PagerReaderFragment extends BaseFragment {
         retryButton.setVisibility(View.GONE);
     }
 
-    private void showImageLoadError() {
+    private void showImageDecodeError() {
         ViewGroup view = (ViewGroup) getView();
         if (view == null)
             return;
 
-        TextView errorText = new TextView(getContext());
+        LinearLayout errorLayout = new PageDecodeErrorLayout(getContext(), page,
-        errorText.setGravity(Gravity.CENTER);
+                getReaderActivity().getReaderTheme(),
-        errorText.setText(R.string.decode_image_error);
+                () -> getReaderActivity().getPresenter().retryPage(page));
-        errorText.setTextColor(getReaderActivity().getReaderTheme() == ReaderActivity.BLACK_THEME ?
-                    lightGreyColor : blackColor);
 
-        view.addView(errorText);
+        view.addView(errorLayout);
     }
 
     private void processStatus(int status) {

app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/webtoon/WebtoonHolder.java

@@ -62,7 +62,6 @@ public class WebtoonHolder extends RecyclerView.ViewHolder {
         container.setOnTouchListener(touchListener);
         retryButton.setOnTouchListener((v, event) -> {
             if (event.getAction() == MotionEvent.ACTION_UP) {
-                if (page != null)
                 adapter.retryPage(page);
             }
             return true;

app/src/main/res/values/strings.xml

@@ -41,6 +41,7 @@
     <string name="action_previous_chapter">Previous chapter</string>
     <string name="action_next_chapter">Next chapter</string>
     <string name="action_retry">Retry</string>
+    <string name="action_open_in_browser">Open in browser</string>
     <string name="action_display_mode">Change display mode</string>
 
     <!-- Buttons -->
@@ -211,7 +212,7 @@
     <string name="chapter_subtitle">Chapter %1$s</string>
     <string name="no_next_chapter">Next chapter not found</string>
     <string name="no_previous_chapter">Previous chapter not found</string>
-    <string name="decode_image_error">Image could not be loaded.\nTry changing the image decoder</string>
+    <string name="decode_image_error">Image could not be loaded.\nTry changing the image decoder or with one of the options below</string>
     <string name="confirm_update_manga_sync">Update last chapter read in enabled services to %1$d?</string>
 
     <!-- Downloads activity and service -->