diff options
Diffstat (limited to 'app/src/main/java')
-rw-r--r-- | app/src/main/java/ml/docilealligator/infinityforreddit/AppBarStateChangeListener.java | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/AppBarStateChangeListener.java b/app/src/main/java/ml/docilealligator/infinityforreddit/AppBarStateChangeListener.java index dffd958c..43e11941 100644 --- a/app/src/main/java/ml/docilealligator/infinityforreddit/AppBarStateChangeListener.java +++ b/app/src/main/java/ml/docilealligator/infinityforreddit/AppBarStateChangeListener.java @@ -4,15 +4,21 @@ import com.google.android.material.appbar.AppBarLayout; public abstract class AppBarStateChangeListener implements AppBarLayout.OnOffsetChangedListener { private AppBarStateChangeListener.State mCurrentState = AppBarStateChangeListener.State.IDLE; + private int lastOffset = -1; @Override - public final void onOffsetChanged(AppBarLayout appBarLayout, int i) { - if (i == 0) { + public final void onOffsetChanged(AppBarLayout appBarLayout, int verticalOffset) { + if (lastOffset == verticalOffset) { + return; + } + lastOffset = verticalOffset; + + if (verticalOffset == 0) { if (mCurrentState != AppBarStateChangeListener.State.EXPANDED) { onStateChanged(appBarLayout, AppBarStateChangeListener.State.EXPANDED); } mCurrentState = AppBarStateChangeListener.State.EXPANDED; - } else if (Math.abs(i) >= appBarLayout.getTotalScrollRange()) { + } else if (Math.abs(verticalOffset) >= appBarLayout.getTotalScrollRange()) { if (mCurrentState != AppBarStateChangeListener.State.COLLAPSED) { onStateChanged(appBarLayout, AppBarStateChangeListener.State.COLLAPSED); } |