修复无打印机模块报错问题

6a49528e · zeven · c8da3eb8 · 6a49528e
Commit 6a49528e authored Jan 29, 2021 by zeven
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Showing with 4 additions and 2 deletions

CounterMixins.js src/pages/CounterMixins.js +4 -2

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--- a/src/pages/CounterMixins.js
+++ b/src/pages/CounterMixins.js
@@ -133,8 +133,10 @@ const CounterMixins = ComposeComponent => {
    };

    printerConnect = async () => {
-      const isConnected = await Printer.isConnected();
-      if (!isConnected) await Printer.usbConnect(); // 尝试连接打印机模块
+      if (Printer) {
+        const isConnected = await Printer.isConnected();
+        if (!isConnected) await Printer.usbConnect(); // 尝试连接打印机模块
+      }
    };

    setDelay = debounce(delay, true, () => {