Prevent scroll on selecting text

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

@@ -0,0 +1,48 @@
+package eu.faircode.email;
+
+/*
+    This file is part of FairEmail.
+
+    FairEmail is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    FairEmail is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with FairEmail.  If not, see <http://www.gnu.org/licenses/>.
+
+    Copyright 2018-2020 by Marcel Bokhorst (M66B)
+*/
+
+import android.content.Context;
+import android.graphics.Rect;
+import android.util.AttributeSet;
+import android.widget.ScrollView;
+
+public class FixedScrollView extends ScrollView {
+    public FixedScrollView(Context context) {
+        super(context);
+    }
+
+    public FixedScrollView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public FixedScrollView(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+    }
+
+    public FixedScrollView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
+        super(context, attrs, defStyleAttr, defStyleRes);
+    }
+
+    @Override
+    protected int computeScrollDeltaToGetChildRectOnScreen(Rect rect) {
+        return 0;
+    }
+}

app/src/main/res/layout/fragment_compose.xml

@@ -11,7 +11,7 @@
         android:layout_height="match_parent"
         app:layout_behavior="eu.faircode.email.BehaviorBottomPadding">
 
-        <ScrollView
+        <eu.faircode.email.FixedScrollView
             android:layout_width="match_parent"
             android:layout_height="0dp"
             app:layout_constraintBottom_toTopOf="@+id/style_bar"
@@ -466,7 +466,7 @@
                     android:layout_height="0dp"
                     app:constraint_referenced_ids="ibCloseRefHint,tvReferenceHint" />
             </androidx.constraintlayout.widget.ConstraintLayout>
-        </ScrollView>
+        </eu.faircode.email.FixedScrollView>
 
         <com.google.android.material.bottomnavigation.BottomNavigationView
             android:id="@+id/style_bar"