Refactoring

app/src/main/java/eu/faircode/email/FragmentAccounts.java

@@ -22,7 +22,6 @@ package eu.faircode.email;
 import static androidx.recyclerview.widget.RecyclerView.NO_POSITION;
 
 import android.animation.ObjectAnimator;
-import android.animation.ValueAnimator;
 import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
@@ -46,7 +45,6 @@ import androidx.appcompat.widget.PopupMenu;
 import androidx.constraintlayout.widget.Group;
 import androidx.core.view.MenuCompat;
 import androidx.fragment.app.FragmentTransaction;
-import androidx.lifecycle.Lifecycle;
 import androidx.lifecycle.Observer;
 import androidx.preference.PreferenceManager;
 import androidx.recyclerview.widget.DividerItemDecoration;
@@ -276,18 +274,7 @@ public class FragmentAccounts extends FragmentBase {
             }
         });
 
-        animator = ObjectAnimator.ofFloat(fab, "alpha", 0.5f, 1.0f);
-        animator.setDuration(750L);
-        animator.setRepeatCount(ValueAnimator.INFINITE);
-        animator.setRepeatMode(ValueAnimator.REVERSE);
-        animator.addUpdateListener(new ObjectAnimator.AnimatorUpdateListener() {
-            @Override
-            public void onAnimationUpdate(ValueAnimator animation) {
-                if (!getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.STARTED))
-                    return;
-                fab.setAlpha((float) animation.getAnimatedValue());
-            }
-        });
+        animator = Helper.getFabAnimator(fab, this);
 
         // Initialize
         FragmentDialogTheme.setBackground(getContext(), view, false);

app/src/main/java/eu/faircode/email/FragmentIdentities.java

@@ -22,7 +22,6 @@ package eu.faircode.email;
 import static androidx.recyclerview.widget.RecyclerView.NO_POSITION;
 
 import android.animation.ObjectAnimator;
-import android.animation.ValueAnimator;
 import android.content.Context;
 import android.content.SharedPreferences;
 import android.graphics.Canvas;
@@ -37,7 +36,6 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.constraintlayout.widget.Group;
 import androidx.fragment.app.FragmentTransaction;
-import androidx.lifecycle.Lifecycle;
 import androidx.lifecycle.Observer;
 import androidx.preference.PreferenceManager;
 import androidx.recyclerview.widget.DividerItemDecoration;
@@ -176,18 +174,7 @@ public class FragmentIdentities extends FragmentBase {
             }
         });
 
-        animator = ObjectAnimator.ofFloat(fab, "alpha", 0.5f, 1.0f);
-        animator.setDuration(750L);
-        animator.setRepeatCount(ValueAnimator.INFINITE);
-        animator.setRepeatMode(ValueAnimator.REVERSE);
-        animator.addUpdateListener(new ObjectAnimator.AnimatorUpdateListener() {
-            @Override
-            public void onAnimationUpdate(ValueAnimator animation) {
-                if (!getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.STARTED))
-                    return;
-                fab.setAlpha((float) animation.getAnimatedValue());
-            }
-        });
+        animator = Helper.getFabAnimator(fab, this);
 
         // Initialize
         FragmentDialogTheme.setBackground(getContext(), view, false);

app/src/main/java/eu/faircode/email/Helper.java

@@ -23,6 +23,8 @@ import static android.os.Process.THREAD_PRIORITY_BACKGROUND;
 import static androidx.browser.customtabs.CustomTabsService.ACTION_CUSTOM_TABS_CONNECTION;
 
 import android.Manifest;
+import android.animation.ObjectAnimator;
+import android.animation.ValueAnimator;
 import android.app.Activity;
 import android.app.ActivityManager;
 import android.app.KeyguardManager;
@@ -631,6 +633,22 @@ public class Helper {
             return context.getResources().getDimensionPixelSize(resid);
     }
 
+    static ObjectAnimator getFabAnimator(View fab, LifecycleOwner owner) {
+        ObjectAnimator animator = ObjectAnimator.ofFloat(fab, "alpha", 0.5f, 1.0f);
+        animator.setDuration(750L);
+        animator.setRepeatCount(ValueAnimator.INFINITE);
+        animator.setRepeatMode(ValueAnimator.REVERSE);
+        animator.addUpdateListener(new ObjectAnimator.AnimatorUpdateListener() {
+            @Override
+            public void onAnimationUpdate(ValueAnimator animation) {
+                if (!owner.getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.STARTED))
+                    return;
+                fab.setAlpha((float) animation.getAnimatedValue());
+            }
+        });
+        return animator;
+    }
+
     static Intent getChooser(Context context, Intent intent) {
         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.R) {
             PackageManager pm = context.getPackageManager();