Update

Author: Zenlua

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

@@ -95,7 +95,7 @@ class TextEditorActivity : AppCompatActivity() {
         binding = ActivityTextEditorBinding.inflate(layoutInflater).also { setContentView(it.root) }
         setupKeyboardInsets()
 
-        val toolbar = findViewById<View>(R.id.toolbar) as Toolbar
+        val toolbar = findViewById<Toolbar>(R.id.toolbar)
         setSupportActionBar(toolbar)
 
         supportActionBar?.apply {
@@ -315,6 +315,7 @@ class TextEditorActivity : AppCompatActivity() {
                 savedContent = content
                 isApplyingHistory = true
                 binding.editorContent.setText(content)
+                binding.editorContent.setSelection(content.length)
                 isApplyingHistory = false
                 undoHandler.removeCallbacks(commitPendingUndoRunnable)
                 pendingUndoSnapshot = null

app/src/main/res/drawable/ic_editor_redo.xml

@@ -4,6 +4,6 @@
     android:viewportWidth="24"
     android:viewportHeight="24">
     <path
-        android:fillColor="#FFFFFFFF"
+        android:fillColor="?android:attr/textColorPrimary"
         android:pathData="M18.4,10.6C16.55,8.99 14.15,8 11.5,8c-4.65,0 -8.58,3.03 -9.96,7.22l2.36,0.78c1.04,-3.19 4.05,-5.5 7.6,-5.5 1.95,0 3.73,0.72 5.12,1.88L13,16h9v-9L18.4,10.6z" />
 </vector>

app/src/main/res/drawable/ic_editor_undo.xml

@@ -4,6 +4,6 @@
     android:viewportWidth="24"
     android:viewportHeight="24">
     <path
-        android:fillColor="#FFFFFFFF"
+        android:fillColor="?android:attr/textColorPrimary"
         android:pathData="M12.5,8c-2.65,0 -5.05,0.99 -6.9,2.6L2,7v9h9l-3.62,-3.62c1.39,-1.16 3.16,-1.88 5.12,-1.88 3.54,0 6.55,2.31 7.6,5.5l2.37,-0.78C21.08,11.03 17.15,8 12.5,8z" />
 </vector>

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

@@ -19,6 +19,7 @@
             android:layout_width="match_parent"
             android:layout_height="85dp"
             android:indeterminate="true"
+            android:layout_marginTop="10dp"
             android:layout_marginStart="30dp"
             android:layout_marginEnd="30dp"
             style="?android:attr/progressBarStyleHorizontal" />