背景
项目中使用的flutter_webview不支持图片上传功能，于是找到一个替换插件flutter_webview_plugin，引入项目后运行报错，flutter_webview_plugin和install_plugin插件冲突了

Attribute provider#androidx.core.content.FileProvider@authorities value=(com.ybm100.app.heye.store.test.fileProvider.install) from [:install_plugin] AndroidManifest.xml:12:13-72
    is also present at [:flutter_webview_plugin] AndroidManifest.xml:11:13-64 value=(com.ybm100.app.heye.store.test.fileprovider).
    Suggestion: add 'tools:replace="android:authorities"' to <provider> element at AndroidManifest.xml:10:9-18:20 to override.
Attribute meta-data#android.support.FILE_PROVIDER_PATHS@resource value=(@xml/provider_install_paths) from [:flutter_bugly] AndroidManifest.xml:27:17-55
    is also present at [:flutter_webview_plugin] AndroidManifest.xml:17:17-50 value=(@xml/filepaths).
    Suggestion: add 'tools:replace="android:resource"' to <meta-data> element at AndroidManifest.xml to override.

查看install_plugin源码相关配置

<application>
        <provider
            android:name="androidx.core.content.FileProvider"
            android:authorities="${applicationId}.fileProvider.install"
            android:exported="false"
            android:grantUriPermissions="true">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/provider_install_paths"/>
        </provider>
    </application>

查看flutter_webview_plugin源码相关配置

<application>
        <provider
            android:name="androidx.core.content.FileProvider"
            android:authorities="${applicationId}.fileprovider"
            android:exported="false"
            android:grantUriPermissions="true"
            tools:replace="android:authorities">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/filepaths" />
        </provider>
    </application>

原因：
由于provider的name相同，authorities和resource都不一致，所以导致冲突。
如果直接指定某一个provide使用tools:replace="android:authorities,android:resource"会导致两个插件某一个不可用。
解决方案：
1.自定义provider

public class MyFileProvider extends  androidx.core.content.FileProvider {
}

这里刚开始我使用的kotlin代码,运行代码直接导致程序崩溃，报错not found MyFileProvider，查看apk的class.dex文件也没有MyFileProvider class，很奇怪，换成java的代码就没问题了

class MyFileProvider : FileProvider()

2.manifest设置

 <!--重写install_plugin provider -->
        <provider
            android:name="androidx.core.content.FileProvider"
            android:authorities="${applicationId}.fileProvider.install"
            android:exported="false"
            android:grantUriPermissions="true"
            tools:replace="android:authorities">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                tools:replace="android:resource"
                android:resource="@xml/provider_install_paths"/>
        </provider>

        <!--重新flutter_webview_plugin provider -->
        <provider
            android:name=".MyFileProvider"
            android:authorities="${applicationId}.fileprovider"
            android:exported="false"
            android:grantUriPermissions="true"
            tools:replace="android:authorities">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/filepaths" />
        </provider>

@xml/filepaths和@xml/provider_install_paths是从两个插件项目中复制出来的
运行一下，ok，两个功能都兼容了。