Copy buttons: haptic tick + transient 'Copied' confirmation

android/app/src/main/java/mw/gri/android/MainActivity.java

@@ -534,6 +534,22 @@ public class MainActivity extends GameActivity {
         }
     }
 
+    // Called from native code to play a tiny "tick" haptic on a successful copy.
+    public void vibrateCopy() {
+        Vibrator vibrator = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
+        if (vibrator == null || !vibrator.hasVibrator()) {
+            return;
+        }
+        // One short, light tick — a confirmation, not an alert.
+        if (Build.VERSION.SDK_INT >= 29) {
+            vibrator.vibrate(VibrationEffect.createPredefined(VibrationEffect.EFFECT_TICK));
+        } else if (Build.VERSION.SDK_INT >= 26) {
+            vibrator.vibrate(VibrationEffect.createOneShot(20, VibrationEffect.DEFAULT_AMPLITUDE));
+        } else {
+            vibrator.vibrate(20);
+        }
+    }
+
     // Called from native code to set status-bar icon color to contrast the
     // in-app theme. white = light icons for a dark background. The app draws
     // edge-to-edge, so the OS status-bar background is the app's own content;

src/gui/platform/android/mod.rs

@@ -224,6 +224,10 @@ impl PlatformCallbacks for Android {
 	fn vibrate_error(&self) {
 		let _ = self.call_java_method("vibrateError", "()V", &[]);
 	}
+
+	fn vibrate_copy(&self) {
+		let _ = self.call_java_method("vibrateCopy", "()V", &[]);
+	}
 }
 
 lazy_static! {

src/gui/platform/mod.rs

@@ -57,4 +57,7 @@ pub trait PlatformCallbacks {
 	/// Play a short "error" haptic (e.g. a rejected over-balance payment).
 	/// No-op off Android.
 	fn vibrate_error(&self) {}
+
+	/// Play a tiny "tick" haptic confirming a successful copy. No-op off Android.
+	fn vibrate_copy(&self) {}
 }

src/gui/views/goblin/mod.rs

@@ -110,6 +110,8 @@ pub struct GoblinWalletView {
 	cancel_confirm: Option<u32>,
 	/// Outcome of the last manual cancel, shown transiently on the receipt.
 	cancel_msg: Option<(crate::nostr::CancelOutcome, std::time::Instant)>,
+	/// Transient "Copied" flash for the settings backup card (npub/keys).
+	copy_flash: Option<std::time::Instant>,
 }
 
 /// Sub-pages of the Settings tab.
@@ -190,6 +192,7 @@ impl Default for GoblinWalletView {
 			avatar_msg: None,
 			cancel_confirm: None,
 			cancel_msg: None,
+			copy_flash: None,
 		}
 	}
 }
@@ -2023,6 +2026,7 @@ impl GoblinWalletView {
 					};
 					if w::big_action(ui, &label, false).clicked() && !npub.is_empty() {
 						cb.copy_string_to_buffer(npub.clone());
+						cb.vibrate_copy();
 						self.receive_copied = Some((1, std::time::Instant::now()));
 					}
 				},
@@ -2215,11 +2219,15 @@ impl GoblinWalletView {
 					if !npub.is_empty() {
 						if settings_row_btn(ui, &t!("goblin.settings.copy_npub"), COPY) {
 							cb.copy_string_to_buffer(npub.clone());
+							cb.vibrate_copy();
+							self.copy_flash = Some(std::time::Instant::now());
 						}
 						// A real backup is the SECRET key (nsec), not the npub.
 						if settings_row_btn(ui, &t!("goblin.settings.backup_nsec"), COPY) {
 							if let Some(nsec) = wallet.nostr_service().and_then(|s| s.nsec()) {
 								cb.copy_string_to_buffer(nsec);
+								cb.vibrate_copy();
+								self.copy_flash = Some(std::time::Instant::now());
 							}
 						}
 						// Encrypted backup file: the identity JSON as stored
@@ -2233,6 +2241,8 @@ impl GoblinWalletView {
 								let json = serde_json::to_string_pretty(&*s.identity.read())
 									.unwrap_or_default();
 								cb.copy_string_to_buffer(json);
+								cb.vibrate_copy();
+								self.copy_flash = Some(std::time::Instant::now());
 							}
 						}
 						if settings_row_danger(
@@ -2253,6 +2263,28 @@ impl GoblinWalletView {
 						}
 					}
 				});
+				// Transient confirmation that the copy landed — pairs with the
+				// haptic tick so the tap feels acknowledged.
+				if let Some(at) = self.copy_flash {
+					if at.elapsed().as_secs_f32() < 1.5 {
+						ui.add_space(6.0);
+						ui.vertical_centered(|ui| {
+							ui.label(
+								RichText::new(format!(
+									"{} {}",
+									crate::gui::icons::CHECK,
+									t!("goblin.receipt.copied")
+								))
+								.font(FontId::new(13.0, fonts::medium()))
+								.color(t.pos),
+							);
+						});
+						ui.ctx()
+							.request_repaint_after(std::time::Duration::from_millis(120));
+					} else {
+						self.copy_flash = None;
+					}
+				}
 				ui.add_space(6.0);
 				ui.label(
 					RichText::new(t!("goblin.settings.backup_note"))
@@ -2389,6 +2421,7 @@ impl GoblinWalletView {
 						if let Some(s) = wallet.nostr_service() {
 							let json = s.store.export_json(&s.npub());
 							cb.copy_string_to_buffer(json);
+							cb.vibrate_copy();
 						}
 					}
 					if settings_row_btn(
@@ -3172,6 +3205,7 @@ impl GoblinWalletView {
 					ui.add_space(10.0);
 					if w::big_action(ui, &t!("goblin.settings.sp_copy"), false).clicked() {
 						cb.copy_string_to_buffer(result);
+						cb.vibrate_copy();
 					}
 				}
 				ui.add_space(16.0);
@@ -3459,6 +3493,7 @@ impl GoblinWalletView {
 					if w::big_action_on_card(ui, &t!("goblin.settings.copy_new_nsec")).clicked() {
 						if let Some(nsec) = wallet.nostr_service().and_then(|s| s.nsec()) {
 							cb.copy_string_to_buffer(nsec);
+							cb.vibrate_copy();
 						}
 					}
 					ui.add_space(8.0);

src/gui/views/goblin/onboarding.rs

@@ -537,6 +537,7 @@ impl OnboardingContent {
 			ui.add_space(14.0);
 		} else if w::chip(ui, &t!("goblin.onboarding.words.copy_clipboard"), false).clicked() {
 			cb.copy_string_to_buffer(self.mnemonic_setup.mnemonic.get_phrase());
+			cb.vibrate_copy();
 		}
 		if !restore {
 			ui.add_space(14.0);