Attempt to workaround Android 8 block index bug

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

@@ -25,6 +25,7 @@ import android.os.Build;
 import android.util.AttributeSet;
 import android.view.KeyEvent;
 import android.view.MotionEvent;
+import android.view.View;
 import android.view.textclassifier.TextClassifier;
 
 import androidx.annotation.NonNull;
@@ -123,14 +124,24 @@ public class FixedEditText extends AppCompatEditText {
             super.onDraw(canvas);
         } catch (Throwable ex) {
             Log.w(ex);
-            /*
+            if (ex instanceof ArrayIndexOutOfBoundsException)
-                java.lang.ArrayIndexOutOfBoundsException: length=39; index=-3
+                try {
-                  at android.text.DynamicLayout.getBlockIndex(DynamicLayout.java:648)
+                    /*
-                  at android.widget.Editor.drawHardwareAccelerated(Editor.java:1703)
+                        java.lang.ArrayIndexOutOfBoundsException: length=39; index=-3
-                  at android.widget.Editor.onDraw(Editor.java:1672)
+                          at android.text.DynamicLayout.getBlockIndex(DynamicLayout.java:648)
-                  at android.widget.TextView.onDraw(TextView.java:6914)
+                          at android.widget.Editor.drawHardwareAccelerated(Editor.java:1703)
-                  at android.view.View.draw(View.java:19200)
+                          at android.widget.Editor.onDraw(Editor.java:1672)
-            */
+                          at android.widget.TextView.onDraw(TextView.java:6914)
+                          at android.view.View.draw(View.java:19200)
+
+                          Fixed in Android 9:
+                          https://android-review.googlesource.com/c/platform/frameworks/base/+/634929
+                    */
+                    setLayerType(View.LAYER_TYPE_SOFTWARE, null);
+                    super.onDraw(canvas);
+                } catch (Throwable exex) {
+                    Log.w(exex);
+                }
         }
     }