fix: open keyboard when tapping on style in note editor

- add UI utils function on Activity to open soft keyboard
- use open soft keyboard utils function as needed

Fixes 18615

Author: Aryan171

AnkiDroid/src/main/java/com/ichi2/anki/NoteEditor.kt

@@ -159,6 +159,7 @@ import com.ichi2.libanki.Notetypes
 import com.ichi2.libanki.Notetypes.Companion.NOT_FOUND_NOTE_TYPE
 import com.ichi2.libanki.Utils
 import com.ichi2.themes.Themes
+import com.ichi2.utils.AndroidUiUtils.showSoftInput
 import com.ichi2.utils.ClipboardUtil
 import com.ichi2.utils.ClipboardUtil.MEDIA_MIME_TYPES
 import com.ichi2.utils.ClipboardUtil.hasMedia
@@ -2464,7 +2465,15 @@ class NoteEditor :
                 text = b.buttonText
             }
             val bmp = toolbar.createDrawableForString(text)
-            val v = toolbar.insertItem(0, bmp, b.toFormatter())
+
+            val v =
+                toolbar.insertItem(0, bmp) {
+                    // Attempt to open keyboard for the currently focused view in the hosting Activity
+                    val activity = context as? Activity
+                    activity.showSoftInput()
+
+                    toolbar.onFormat(b.toFormatter())
+                }
             v.contentDescription = text
 
             // Allow Ctrl + 1...Ctrl + 0 for item 10.

AnkiDroid/src/main/java/com/ichi2/anki/noteeditor/Toolbar.kt

@@ -53,6 +53,7 @@ import com.ichi2.anki.NoteEditor
 import com.ichi2.anki.R
 import com.ichi2.anki.preferences.sharedPrefs
 import com.ichi2.compat.CompatHelper
+import com.ichi2.utils.AndroidUiUtils.showSoftInput
 import com.ichi2.utils.ViewGroupUtils
 import com.ichi2.utils.ViewGroupUtils.getAllChildrenRecursive
 import com.ichi2.utils.dp
@@ -116,7 +117,13 @@ class Toolbar : FrameLayout {
             @IdRes id: Int,
             prefix: String,
             suffix: String,
-        ) = findViewById<View>(id).setOnClickListener { onFormat(TextWrapper(prefix, suffix)) }
+        ) = findViewById<View>(id).setOnClickListener {
+            // Attempt to open keyboard for the currently focused view in the hosting Activity
+            val activity = context as? Activity
+            activity.showSoftInput()
+
+            onFormat(TextWrapper(prefix, suffix))
+        }
 
         setupButtonWrappingText(R.id.note_editor_toolbar_button_bold, "<b>", "</b>")
         setupButtonWrappingText(R.id.note_editor_toolbar_button_italic, "<i>", "</i>")

AnkiDroid/src/main/java/com/ichi2/utils/AndroidUiUtils.kt

@@ -15,13 +15,26 @@
  */
 package com.ichi2.utils
 
+import android.app.Activity
 import android.content.Context
 import android.view.View
 import android.view.Window
 import android.view.WindowManager
 import android.view.inputmethod.InputMethodManager
 
 object AndroidUiUtils {
+    /**
+     * Shows the soft keyboard for the current focused view in the activity.
+     *
+     * It's a good practice to ensure that the `currentFocus` is an
+     * appropriate input field (e.g., EditText) before calling this function
+     */
+    fun Activity?.showSoftInput() {
+        val currentFocus = this?.currentFocus ?: return
+        val imm = this.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
+        imm.showSoftInput(currentFocus, InputMethodManager.SHOW_IMPLICIT)
+    }
+
     /**
      * This method is used for setting the focus on an EditText which is used in a dialog
      * and for opening the keyboard.