Show an UI feedback when copying to clipboard

Instead of using a snackbar show a checkmark and a text view when user
copy the qr scan result.

Author: mrxx0

app/src/main/java/app/grapheneos/camera/ui/activities/MainActivity.kt

@@ -1198,17 +1198,29 @@ open class MainActivity : AppCompatActivity(),
             })
 
             val ctc: ImageButton = dialogBinding.copyQrText
+            val confirmationLabel = dialogBinding.copyConfirmation
+
             ctc.setOnClickListener {
-                val clipboardManager = getSystemService(
-                    Context.CLIPBOARD_SERVICE
-                ) as ClipboardManager
-                val clipData = ClipData.newPlainText(
-                    "text",
-                    textView.text
-                )
+                val clipboardManager = getSystemService(CLIPBOARD_SERVICE) as ClipboardManager
+                val clipData = ClipData.newPlainText("text", textView.text)
                 clipboardManager.setPrimaryClip(clipData)
 
-                showMessage(getString(R.string.copied_text_to_clipboard))
+                ctc.setImageResource(R.drawable.ic_check)
+                ctc.imageTintList = null
+                ctc.animate().scaleX(1.2f).scaleY(1.2f).setDuration(100).withEndAction {
+                    ctc.animate().scaleX(1.0f).scaleY(1.0f).setDuration(100)
+                }
+                    confirmationLabel.visibility = View.VISIBLE
+                    confirmationLabel.postDelayed({
+                        confirmationLabel.visibility = View.GONE
+                    }, 2000)
+
+                ctc.postDelayed({
+                    ctc.animate().alpha(0f).setDuration(150).withEndAction {
+                        ctc.setImageResource(R.drawable.copy_to_clipboard)
+                        ctc.animate().alpha(1f).setDuration(150).start()
+                    }
+                }, 2000)
             }
 
             val sButton: ImageButton = dialogBinding.shareQrText

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

@@ -0,0 +1,25 @@
+<!--
+  ~ Copyright (C) 2026 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:height="24dp"
+    android:width="24dp"
+    android:viewportHeight="24"
+    android:viewportWidth="24">
+
+    <path
+        android:fillColor="?attr/colorPrimary"
+        android:pathData="M9,16.17L4.83,12l-1.42,1.41L9,19 21,7l-1.41,-1.41z"/>
+</vector>

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

@@ -84,4 +84,19 @@
         android:layout_width="match_parent"
         android:textColor="?android:attr/textColorPrimary"/>
 
+    <TextView
+        android:id="@+id/copy_confirmation"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="12dp"
+        android:gravity="center"
+        android:padding="10dp"
+        android:text="@string/copied_text_to_clipboard"
+        android:backgroundTint="?attr/colorSecondaryContainer"
+        android:background="@drawable/qr_result_background"
+        android:textColor="?attr/colorOnSecondaryContainer"
+        android:textStyle="bold"
+        android:textSize="14sp"
+        android:visibility="gone" />
+
 </LinearLayout>