Android webview 遇到android.os.FileUriExposedException错误解决办法

<manifest ...>   <application ...>     <provider       android:name="android.support.v4.content.FileProvider"       android:authorities="${applicationId}.provider"       android:exported="false"       android:grantUriPermissions="true">       <meta-data         android:name="android.support.FILE_PROVIDER_PATHS"         android:resource="@xml/provider_paths"/>     </provider>   </application> </manifest> 

<?xml version="1.0" encoding="utf-8"?> <paths xmlns:android="http://schemas.android.com/apk/res/android">   <external-path name="external_files" path="."/> </paths>

... imageUri = Uri.fromFile(createImageFile());   replace with :   File file = createImageFile();         imageUri = FileProvider.getUriForFile(mActivity, mActivity.getPackageName() + ".provider", file);   ...