diff --git a/src/composables/useQRScanner.ts b/src/composables/useQRScanner.ts
index ac79842..f7f7c3c 100644
--- a/src/composables/useQRScanner.ts
+++ b/src/composables/useQRScanner.ts
@@ -18,17 +18,17 @@ export function useQRScanner() {
   const { vibrate } = useHaptics();
   const isSupported = Capacitor.isNativePlatform();
 
-  const showError = async (message: string) => {
+  async function showError(message: string) {
     const toast = await toastController.create({
       message,
       duration: 2000,
-      position: "top",
+      position: "bottom",
       color: "danger",
     });
     await toast.present();
   };
 
-  const openScanner = async (options?: ScannerOptions): Promise<QRScanResult | null> => {
+  async function open(options?: ScannerOptions): Promise<QRScanResult | null> {
     try {
       if (!isSupported) {
         await showError(t("scanner.notSupported"));
@@ -62,10 +62,10 @@ export function useQRScanner() {
       }
       return null;
     }
-  };
+  }
 
   return {
     isSupported,
-    openScanner,
+    open,
   };
 }
diff --git a/src/views/user/index.vue b/src/views/user/index.vue
index 4bc85eb..810f5ca 100644
--- a/src/views/user/index.vue
+++ b/src/views/user/index.vue
@@ -10,7 +10,7 @@ import WalletCard from "./components/wallet-card.vue";
 
 const { vibrate } = useHaptics();
 const walletStore = useWalletStore();
-const { openScanner } = useQRScanner();
+const { open } = useQRScanner();
 
 async function handleRefresh(event: RefresherCustomEvent) {
   vibrate();
@@ -23,7 +23,7 @@ async function handleRefresh(event: RefresherCustomEvent) {
 // 处理扫描二维码
 async function handleScan() {
   vibrate();
-  const result = await openScanner({
+  const result = await open({
     title: "扫描二维码",
   });