IllegalArgumentException: Failed to find configuration root that contains xxx on FileProvider.getUriForFile

问题

I have been trying to follow the Android tutorial on sharing files. I set up the FileProvider like this:

On the main manifest xml:

<provider
            android:name="android.support.v4.content.FileProvider"
            android:authorities="com.example.mysecondapp.fileprovider"
            android:exported="false"
            android:grantUriPermissions="true" >
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/filepaths" />
        </provider>

the res/xml/filpaths.xml file:

<paths xmlns:android="http://schemas.android.com/apk/res/android">
    <external-path name="myexternalimages" path="SpCars_album/" />
</paths>

And in my code I am trying the following:

File requestFile = new File(mImageFilenames[position]);
                try {
                    fileUri = FileProvider.getUriForFile(
                            SeventhActivity.this,
                            "com.example.mysecondapp.fileprovider",
                            requestFile);
                } catch (IllegalArgumentException e) {
                    Log.e("File Selector",
                            "The selected file can't be shared: " +
                                    mImageFilenames[position]);
                }

The requestFile is instantiated with a proper working path for a file. The path of that file begins exactly with what getExternalFilesDir(Environment.DIRECTORY_PICTURES) returns. I just cant understand what raises the error because everything seems to fit. Thanks in advance.

回答1:

The path of that file begins exactly with what getExternalFilesDir(Environment.DIRECTORY_PICTURES) returns.

AFAIK, that will not give you a directory named SpCars_album/.

I just cant understand what raises the error because everything seems to fit.

The file you supplied is not one that can be served by the FileProvider from your defined roots.

UPDATE

I forgot that this is tied to a documentation bug on FileProvider. FileProvider and <external-path> does NOT serve files from getExternalFilesDir(), but instead from Environment.getExternalStorageDirectory(). I created a StreamProvider subclass that offers support for getExternalFilesDir().

If you use my StreamProvider, replacing your <external-path> with <external-files-path name="myexternalimages" path="Pictures/SpCars_album/" />, you should have better luck.

回答2:

This is an old question now, but I've just had a similar issue.

A lazy solution I found is to just use:

<external-path name="myexternalimages" path="Android/" />

Because getExternalStorageDirectory returns "/storage/emulated/0/", sharing /Android (the next level down) will allow any files that are in your app to be accessed.

Alternatively, if you want to be more precise, you can do this:

<external-path name="myexternalimages" path="Android/data/YOUR_BUNDLE_ID/files/SpCars_album" />

This doesn't feel quite right, but it does seem to work!

回答3:

Adding implementation 'com.android.support:support-v4:28.0.0' into app gradlle dependencies worked in my case. Please change SDK platform version (28.0.0 in my case) accordingly.

回答4:

if you dont try catch exception as IllegalArgumentException for FileProvider.getUriFoFile(), when you run your code ,you also will have this exception.

try {
     Uri uriForFile = FileProvider.getUriForFile(this,"com.fengfutong.bluetoothc2s.fileprovider", f);
} catch (IllegalArgumentException e) {
     e.printStackTrace();
}

来源：https://stackoverflow.com/questions/20455035/illegalargumentexception-failed-to-find-configuration-root-that-contains-xxx-on

标签

android

filepath

illegalargumentexception

android-fileprovider