测试web-view是否适配dark主题

hybrid/html/local.html

@@ -35,6 +35,7 @@
       <button class="btn" type="button" data-action="reLaunch">reLaunch</button>
       <button class="btn" type="button" data-action="switchTab">switchTab</button>
       <button class="btn" type="button" data-action="getEnv">getEnv</button>
+      <!-- <button class="btn" type="button" data-action="getTheme">获取主题</button> -->
     </div>
     <p class="desc">网页向应用发送消息。注意：小程序端应用会在此页面后退时接收到消息。</p>
     <div class="btn-list">
@@ -88,6 +89,9 @@
                 })
               });
               break;
+            /* case 'getTheme':
+              alert(getThemePreference())
+              break; */
             default:
               uni.webView[action]({
                 url: '/pages/component/button/button'
@@ -108,6 +112,15 @@
           }
         })
       })
+
+      /* function getThemePreference() {
+        if (window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches) {
+          return 'dark';
+        } else if (window.matchMedia && window.matchMedia('(prefers-color-scheme: light)').matches) {
+          return 'light';
+        }
+        return 'unknown';
+      } */
     </script>
   </body>
 </html>