java.lang.IllegalArgumentExcepti

flutter images_pick插件调用相机openCamera时闪退，报错如下：

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.rhyme.owner/com.luck.picture.lib.PictureSelectorCameraEmptyActivity}: java.lang.IllegalArgumentException: Failed to find configured root that contains /storage/emulated/0/Android/data/com.datou.demo/cache/image_picker_camera_5c0d38a0-f951-4bd2-b153-8d9294a2eaa6.jpg

解决方式：
需要在主项目AndroidManifest.xml的application标签下增加provider标签：

<provider
            android:name="androidx.core.content.FileProvider"
            android:authorities="com.datou.demo.fileprovider"
            android:exported="false"
            android:grantUriPermissions="true">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/file_paths"
                tools:replace="android:resource" />
</provider>

然后在相应目录(xml/file_paths)创建xml文件file_paths：

<?xml version="1.0" encoding="utf-8"?>
<paths>
    <external-path name="external_files" path="."/>
</paths>