手機端由原生切換為H5，定位不到元素。需要將apk開啟調試模式：在入口Activity中添加2行代碼，如下

if (Build.VERSION.SDK_INT >=Build.VERSION_CODES.KITKAT) {
        WebView.setWebContentsDebuggingEnabled(true);
    }

效果如下：
protected void onCreate(Bundle savedInstanceState) {
    setContentView(R.layout.activity_main);
    super.onCreate(savedInstanceState);
    context = this;
    if (Build.VERSION.SDK_INT >=Build.VERSION_CODES.KITKAT) {
        WebView.setWebContentsDebuggingEnabled(true);
    }
　　 ......
    ......

appium定位H5頁面