更新程序语音提示

src/App.js

@@ -9,6 +9,7 @@ import Toast from './components/Toast';
 import router from './router';
 import models from './models';
 import dva from './utils/dva';
+import Speech from './utils/Speech';
 import Restart from './utils/Restart';
 import Installer from './utils/Installer';
 import {counterInterval} from './utils/authInterval';
@@ -101,8 +102,10 @@ class App extends React.Component {
           return;
         }
         const file = match[2];
+        Speech.speak('正在下载程序，请稍后');
         Installer.download(url, file).then(apk => {
           if (apk) {
+            Speech.speak('程序下载完成，正在安装');
             Installer.install(apk);
           }
         });