Cleanup - squid:S1155 - Collection.isEmpty() should be used to test for emptiness (#371)

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

@@ -530,7 +530,7 @@ public class VerticalViewPagerImpl extends ViewGroup {
             setScrollingCacheEnabled(false);
             return;
         }
-        if (!always && mCurItem == item && mItems.size() != 0) {
+        if (!always && mCurItem == item && !mItems.isEmpty()) {
             setScrollingCacheEnabled(false);
             return;
         }
@@ -1676,7 +1676,7 @@ public class VerticalViewPagerImpl extends ViewGroup {
     }
 
     private boolean pageScrolled(int ypos) {
-        if (mItems.size() == 0) {
+        if (mItems.isEmpty()) {
             mCalledSuper = false;
             onPageScrolled(0, 0, 0);
             if (!mCalledSuper) {
@@ -2258,7 +2258,7 @@ public class VerticalViewPagerImpl extends ViewGroup {
             targetPage = (int) (currentPage + pageOffset + truncator);
         }
 
-        if (mItems.size() > 0) {
+        if (!mItems.isEmpty()) {
             final ItemInfo firstItem = mItems.get(0);
             final ItemInfo lastItem = mItems.get(mItems.size() - 1);
 
@@ -2315,7 +2315,7 @@ public class VerticalViewPagerImpl extends ViewGroup {
         super.onDraw(canvas);
 
         // Draw the margin drawable between pages if needed.
-        if (mPageMargin > 0 && mMarginDrawable != null && mItems.size() > 0 && mAdapter != null) {
+        if (mPageMargin > 0 && mMarginDrawable != null && !mItems.isEmpty() && mAdapter != null) {
             final int scrollY = getScrollY();
             final int height = getHeight();