Update

Author: Zenlua

app/src/main/java/com/tool/tree/TextEditorActivity.kt

@@ -184,12 +184,12 @@ class TextEditorActivity : AppCompatActivity() {
             this,
             title = getString(R.string.editor_unsaved_title),
             message = getString(R.string.editor_unsaved_message),
-            onConfirm = DialogHelper.DialogButton(getString(R.string.editor_save)) {
+            onConfirm = DialogHelper.DialogButton(getString(R.string.editor_save), onClick = Runnable {
                 saveFile { success -> if (success) finish() }
-            },
-            onCancel = DialogHelper.DialogButton(getString(R.string.editor_discard)) {
+            }),
+            onCancel = DialogHelper.DialogButton(getString(R.string.editor_discard), onClick = Runnable {
                 finish()
-            }
+            })
         )
     }
 

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

@@ -16,20 +16,19 @@
         <HorizontalScrollView
             android:id="@+id/editor_scroll_horizontal"
             android:layout_width="match_parent"
-            android:layout_height="wrap_content"
+            android:layout_height="match_parent"
             android:fillViewport="true"
             android:scrollbarStyle="insideOverlay">
 
             <EditText
                 android:id="@+id/editor_content"
                 android:layout_width="match_parent"
-                android:layout_height="wrap_content"
+                android:layout_height="match_parent"
                 android:background="@android:color/transparent"
                 android:gravity="top|start"
                 android:hint="@string/editor_hint_empty"
                 android:inputType="textMultiLine|textNoSuggestions"
                 android:imeOptions="flagNoExtractUi"
-                android:minHeight="match_parent"
                 android:padding="16dp"
                 android:textColor="?android:attr/textColorPrimary"
                 android:textColorHint="?android:attr/textColorSecondary"