Update index.tsx

src/teacher/music/upload/index.tsx

@@ -566,7 +566,7 @@ export default defineComponent({
                   </div>
                 ),
                 input: () =>
-                  !browser().isApp ? (
+                  browser().isApp ? (
                     <div class={styles.btnSection}>
                       <Button
                         icon={UploadIcon}