Android: IllegalArgumentException: Failed to find configured root that contains /data/data/

问题

Just getting into the Glide image loading library for Android. Working with code from here: https://github.com/bumptech/glide/issues/459

Full project here: https://github.com/mhurwicz/glide02

I'm getting the following exception when I run the app in the emulator in Android Studio:

java.lang.IllegalArgumentException: Failed to find configured root that contains /data/data/com.example.glide02/cache/image_manager_disk_cache/5a992029460eed14244e8b970d969d45518b2f7ac10f71eb26bd0aaf7c3bcf06.0

The rest of the messages are:

at android.support.v4.content.FileProvider$SimplePathStrategy.getUriForFile(FileProvider.java:711)
                  at android.support.v4.content.FileProvider.getUriForFile(FileProvider.java:400)
                  at com.example.glide02.ShareTask.onPostExecute(ShareTask.java:37)
                  at com.example.glide02.ShareTask.onPostExecute(ShareTask.java:15)
                  at android.os.AsyncTask.finish(AsyncTask.java:651)
                  at android.os.AsyncTask.-wrap1(AsyncTask.java)
                  at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:668)
                  at android.os.Handler.dispatchMessage(Handler.java:102)
                  at android.os.Looper.loop(Looper.java:148)
                  at android.app.ActivityThread.main(ActivityThread.java:5417)
                  at java.lang.reflect.Method.invoke(Native Method)
                  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
                  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

The error occurs on FileProvider.getUriForFile()

@Override protected void onPostExecute(File result) {
    if (result == null) { return; }
    Uri uri = FileProvider.getUriForFile(context, context.getPackageName(), result);
    share(uri); // startActivity probably needs UI thread
}

I've looked at several other questions relating to this error, but can't see how they relate to my case, perhaps due to my lack of familiarity with this whole area.

Any help will be greatly appreciated.

This is the full code for the class in which the above method occurs:

class ShareTask extends AsyncTask<String, Void, File> {
private final Context context;

public ShareTask(Context context) {
    this.context = context;
}
@Override protected File doInBackground(String... params) {
    String url = params[0]; // should be easy to extend to share multiple images at once
    try {
        return Glide
                .with(context)
                .load(url)
                .downloadOnly(Target.SIZE_ORIGINAL, Target.SIZE_ORIGINAL)
                .get() // needs to be called on background thread
                ;
    } catch (Exception ex) {
        Log.w("SHARE", "Sharing " + url + " failed", ex);
        return null;
    }
}
@Override protected void onPostExecute(File result) {
    if (result == null) { return; }
    Uri uri = FileProvider.getUriForFile(context, context.getPackageName(), result);
    share(uri); // startActivity probably needs UI thread
}

private void share(Uri result) {
    Intent intent = new Intent(Intent.ACTION_SEND);
    intent.setType("image/jpeg");
    intent.putExtra(Intent.EXTRA_SUBJECT, "Shared image");
    intent.putExtra(Intent.EXTRA_TEXT, "Look what I found!");
    intent.putExtra(Intent.EXTRA_STREAM, result);
    context.startActivity(Intent.createChooser(intent, "Share image"));
}

}

回答1:

In filepaths.xml you need

<cache-path name="shared_images_from_glide_cache" path="image_manager_disk_cache"/>

This will result in mapping

new File("/data/data/com.example.glide02/cache/image_manager_disk_cache/5a992029460eed14244e8b970d969d45518b2f7ac10f71eb26bd0aaf7c3bcf06.0")

to

Uri.parse("content://com.example.glide02/shared_images_from_glide_cache/5a992029460eed14244e8b970d969d45518b2f7ac10f71eb26bd0aaf7c3bcf06.0")

(Not sure if I got it exactly right, but you should get the point.)

来源：https://stackoverflow.com/questions/41754799/android-illegalargumentexception-failed-to-find-configured-root-that-contains