Android: Use expanding Extended FAB

This adds text to the FAB when expanded and shrinks the FAB on scroll. The text will return when scrolling up as well.

2 files changed, 13 insertions, 2 deletions

diff --git a/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/ui/main/MainActivity.java b/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/ui/main/MainActivity.java
index 2a0512e3ac..0e97ee2181 100644
--- a/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/ui/main/MainActivity.java
+++ b/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/ui/main/MainActivity.java
@@ -76,6 +76,17 @@ public final class MainActivity extends AppCompatActivity
 
     // Set up the FAB.
     mBinding.buttonAddDirectory.setOnClickListener(view -> mPresenter.onFabClick());
+    mBinding.appbarMain.addOnOffsetChangedListener((appBarLayout, verticalOffset) ->
+    {
+      if (verticalOffset == 0)
+      {
+        mBinding.buttonAddDirectory.extend();
+      }
+      else if (appBarLayout.getTotalScrollRange() == -verticalOffset)
+      {
+        mBinding.buttonAddDirectory.shrink();
+      }
+    });
 
     mPresenter.onCreate();
 
diff --git a/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/utils/InsetsHelper.java b/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/utils/InsetsHelper.java
index 7b98528667..311e16b10a 100644
--- a/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/utils/InsetsHelper.java
+++ b/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/utils/InsetsHelper.java
@@ -20,7 +20,7 @@ import androidx.viewpager.widget.ViewPager;
 
 import com.google.android.material.appbar.AppBarLayout;
 import com.google.android.material.color.MaterialColors;
-import com.google.android.material.floatingactionbutton.FloatingActionButton;
+import com.google.android.material.floatingactionbutton.ExtendedFloatingActionButton;
 
 import org.dolphinemu.dolphinemu.R;
 
@@ -73,7 +73,7 @@ public class InsetsHelper
   }
 
   public static void setUpMainLayout(AppCompatActivity activity, AppBarLayout appBarLayout,
-          FloatingActionButton fab, ViewPager viewPager, View workaroundView)
+          ExtendedFloatingActionButton fab, ViewPager viewPager, View workaroundView)
   {
     ViewCompat.setOnApplyWindowInsetsListener(appBarLayout, (v, windowInsets) ->
     {