Multiple quality improvements - squid:S1213, squid:S1943, squid:S1066 (#342)

app/src/main/java/eu/kanade/tachiyomi/injection/ComponentReflectionInjector.java

@@ -40,6 +40,8 @@ import java.util.concurrent.ConcurrentHashMap;
  */
 public final class ComponentReflectionInjector<T> {
 
+    private static final ConcurrentHashMap<Class<?>, HashMap<Class<?>, Method>> cache = new ConcurrentHashMap<>();
+
     private final Class<T> componentClass;
     private final T component;
     private final HashMap<Class<?>, Method> methods;
@@ -74,8 +76,6 @@ public final class ComponentReflectionInjector<T> {
         }
     }
 
-    private static final ConcurrentHashMap<Class<?>, HashMap<Class<?>, Method>> cache = new ConcurrentHashMap<>();
-
     private static HashMap<Class<?>, Method> getMethods(Class componentClass) {
         HashMap<Class<?>, Method> methods = cache.get(componentClass);
         if (methods == null) {

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

@@ -1141,10 +1141,8 @@ public class VerticalViewPagerImpl extends ViewGroup {
                 for (int i=0; i<getChildCount(); i++) {
                     View child = getChildAt(i);
                     ii = infoForChild(child);
-                    if (ii != null && ii.position == mCurItem) {
-                        if (child.requestFocus(focusDirection)) {
-                            break;
-                        }
+                    if (ii != null && ii.position == mCurItem && child.requestFocus(focusDirection)) {
+                        break;
                     }
                 }
             }
@@ -1264,24 +1262,6 @@ public class VerticalViewPagerImpl extends ViewGroup {
         private Parcelable adapterState;
         private ClassLoader loader;
 
-        public SavedState(Parcelable superState) {
-            super(superState);
-        }
-
-        @Override
-        public void writeToParcel(Parcel out, int flags) {
-            super.writeToParcel(out, flags);
-            out.writeInt(position);
-            out.writeParcelable(adapterState, flags);
-        }
-
-        @Override
-        public String toString() {
-            return "FragmentPager.SavedState{"
-                    + Integer.toHexString(System.identityHashCode(this))
-                    + " position=" + position + "}";
-        }
-
         public static final Parcelable.Creator<SavedState> CREATOR
                 = ParcelableCompat.newCreator(new ParcelableCompatCreatorCallbacks<SavedState>() {
             @Override
@@ -1294,6 +1274,10 @@ public class VerticalViewPagerImpl extends ViewGroup {
             }
         });
 
+        public SavedState(Parcelable superState) {
+            super(superState);
+        }
+
         SavedState(Parcel in, ClassLoader loader) {
             super(in);
             if (loader == null) {
@@ -1303,6 +1287,21 @@ public class VerticalViewPagerImpl extends ViewGroup {
             adapterState = in.readParcelable(loader);
             this.loader = loader;
         }
+
+        @Override
+        public void writeToParcel(Parcel out, int flags) {
+            super.writeToParcel(out, flags);
+            out.writeInt(position);
+            out.writeParcelable(adapterState, flags);
+        }
+
+        @Override
+        public String toString() {
+            return "FragmentPager.SavedState{"
+                    + Integer.toHexString(System.identityHashCode(this))
+                    + " position=" + position + "}";
+        }
+
     }
 
     @Override
@@ -1956,11 +1955,9 @@ public class VerticalViewPagerImpl extends ViewGroup {
                     if (DEBUG) Log.v(TAG, "Starting unable to drag!");
                     mIsUnableToDrag = true;
                 }
-                if (mIsBeingDragged) {
-                    // Scroll to follow the motion event
-                    if (performDrag(y)) {
-                        ViewCompat.postInvalidateOnAnimation(this);
-                    }
+                // Scroll to follow the motion event
+                if (mIsBeingDragged && performDrag(y)) {
+                    ViewCompat.postInvalidateOnAnimation(this);
                 }
                 break;
             }
@@ -2811,10 +2808,8 @@ public class VerticalViewPagerImpl extends ViewGroup {
             View child = getChildAt(i);
             if (child.getVisibility() == VISIBLE) {
                 ItemInfo ii = infoForChild(child);
-                if (ii != null && ii.position == mCurItem) {
-                    if (child.requestFocus(direction, previouslyFocusedRect)) {
-                        return true;
-                    }
+                if (ii != null && ii.position == mCurItem && child.requestFocus(direction, previouslyFocusedRect)) {
+                    return true;
                 }
             }
         }

app/src/main/java/eu/kanade/tachiyomi/util/DiskUtils.java

@@ -2,6 +2,7 @@ package eu.kanade.tachiyomi.util;
 
 import java.io.File;
 import java.io.IOException;
+import java.nio.charset.StandardCharsets;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 
@@ -15,7 +16,7 @@ public final class DiskUtils {
         String cacheKey;
         try {
             final MessageDigest mDigest = MessageDigest.getInstance("MD5");
-            mDigest.update(key.getBytes());
+            mDigest.update(key.getBytes(StandardCharsets.UTF_8));
             cacheKey = bytesToHexString(mDigest.digest());
         } catch (NoSuchAlgorithmException e) {
             cacheKey = String.valueOf(key.hashCode());