plus.gallery.pick不能弹出选择图片窗口

大家好，我用widget方式集成在安卓工程上了mui项目，但是plus.gallery.pick不能弹出选择图片窗口，但是在真机运行情况下可以弹出。

这是properties.xml的配置：
<properties>
<features>
<feature name="Accelerometer" value="io.dcloud.feature.sensor.AccelerometerFeatureImpl"/>
<feature name="Audio" value="io.dcloud.feature.audio.AudioFeatureImpl"></feature>
<feature name="Cache" value="io.dcloud.feature.pdr.CoreCacheFeatureImpl"></feature>
<feature name="Console" value="io.dcloud.feature.pdr.LoggerFeatureImpl"></feature>
<feature name="Device" value="io.dcloud.feature.device.DeviceFeatureImpl"></feature>
<feature name="Downloader" value="io.dcloud.net.DownloaderFeatureImpl"></feature>
<feature name="File" value="io.dcloud.js.file.FileFeatureImpl"></feature>
<feature name="Gallery" value="io.dcloud.js.gallery.GalleryFeatureImpl"></feature>
<feature name="Storage" value="io.dcloud.feature.pdr.NStorageFeatureImpl"></feature>
<feature name="Uploader" value="io.dcloud.net.UploadFeature"></feature>
<feature name="Runtime" value="io.dcloud.feature.pdr.RuntimeFeatureImpl"></feature>
<feature name="XMLHttpRequest" value="io.dcloud.net.XMLHttpRequestFeature"></feature>
<feature name="Zip" value="io.dcloud.feature.pdr.ZipFeature"></feature>
<feature name="UI" value="io.dcloud.feature.ui.UIFeatureImpl"><module name="Navigator" value="io.dcloud.feature.ui.NavView"/></feature>
<feature name="NativeUI" value="io.dcloud.feature.ui.nativeui.NativeUIFeatureImpl"></feature>
<feature name="Navigator" value="io.dcloud.feature.ui.navigator.NavigatorUIFeatureImpl"></feature>
<feature name="NativeObj" value="io.dcloud.feature.nativeObj.FeatureImpl"></feature>
<feature name="Contacts" value="io.dcloud.feature.contacts.ContactsFeatureImpl" ></feature>
<feature name="Camera" value="io.dcloud.js.camera.CameraFeatureImpl" />
</features>

<services>  
    <service name="Downloader" value="io.dcloud.net.DownloaderBootImpl"/>  
</services>  

</properties>