读取共享文件失败：Failed to find configured root that contains

问题：在android8.1以上进行程序间文件共享使用FileProvider时出现的SD卡异常错误

FATAL EXCEPTION: main
 Process: com.zenmme.zenmmeleveling, PID: 18726
java.lang.IllegalArgumentException: Failed to find configured root that contains    /storage/emulated/0/PictureSelector/CameraImage/PictureSelector_20190227_140651.mp4
                                                                               at android.support.v4.content.FileProvider$SimplePathStrategy.getUriForFile(FileProvider.java:719)
                                                                               at android.support.v4.content.FileProvider.getUriForFile(FileProvider.java:404)
                                                                               at com.luck.picture.lib.PictureSelectorActivity.parUri(PictureSelectorActivity.java:444)
                                                                               at com.luck.picture.lib.PictureSelectorActivity.startOpenCameraVideo(PictureSelectorActivity.java:394)
                                                                               at com.luck.picture.lib.PictureSelectorActivity.startCamera(PictureSelectorActivity.java:357)
                                                                               at com.luck.picture.lib.PictureSelectorActivity$10.onNext(PictureSelectorActivity.java:753)
                                                                               at com.luck.picture.lib.PictureSelectorActivity$10.onNext(PictureSelectorActivity.java:744)
                                                                               at io.reactivex.internal.operators.observable.ObservableFlatMap$MergeObserver.tryEmitScalar(ObservableFlatMap.java:234)
                                                                               at io.reactivex.internal.operators.observable.ObservableFlatMap$MergeObserver.subscribeInner(ObservableFlatMap.java:146)
                                                                               at io.reactivex.internal.operators.observable.ObservableFlatMap$MergeObserver.onNext(ObservableFlatMap.java:139)
                                                                               at io.reactivex.internal.operators.observable.ObservableBuffer$BufferExactObserver.onNext(ObservableBuffer.java:113)
                                                                               at io.reactivex.internal.operators.observable.ObservableFlatMap$MergeObserver.tryEmit(ObservableFlatMap.java:262)
                                                                               at io.reactivex.internal.operators.observable.ObservableFlatMap$InnerObserver.onNext(ObservableFlatMap.java:559)
                                                                               at io.reactivex.observers.SerializedObserver.onNext(SerializedObserver.java:113)
                                                                               at io.reactivex.internal.operators.observable.ObservableConcatMap$SourceObserver$InnerObserver.onNext(ObservableConcatMap.java:250)
                                                                               at io.reactivex.internal.operators.observable.ObservableScalarXMap$ScalarDisposable.run(ObservableScalarXMap.java:248)
                                                                               at io.reactivex.internal.operators.observable.ObservableJust.subscribeActual(ObservableJust.java:35)
                                                                               at io.reactivex.Observable.subscribe(Observable.java:10903)
                                                                               at io.reactivex.internal.operators.observable.ObservableConcatMap$SourceObserver.drain(ObservableConcatMap.java:224)
                                                                               at io.reactivex.internal.operators.observable.ObservableConcatMap$SourceObserver.onSubscribe(ObservableConcatMap.java:103)
                                                                               at io.reactivex.internal.operators.observable.ObservableFromIterable.subscribeActual(ObservableFromIterable.java:55)
                                                                               at io.reactivex.Observable.subscribe(Observable.java:10903)
                                                                               at io.reactivex.internal.operators.observable.ObservableConcatMap.subscribeActual(ObservableConcatMap.java:52)
                                                                               at io.reactivex.Observable.subscribe(Observable.java:10903)
                                                                               at io.reactivex.internal.operators.observable.ObservableFlatMap$MergeObserver.subscribeInner(ObservableFlatMap.java:162)
                                                                               at io.reactivex.internal.operators.observable.ObservableFlatMap$MergeObserver.onNext(ObservableFlatMap.java:139)
                                                                               at io.reactivex.internal.operators.observable.ObservableFlatMap$MergeObserver.tryEmitScalar(ObservableFlatMap.java:234)
                                                                               at io.reactivex.internal.operators.observable.ObservableFlatMap$MergeObserver.subscribeInner(ObservableFlatMap.java:146)
                                                                               at io.reactivex.internal.operators.observable.ObservableFlatMap$MergeObserver.onNext(ObservableFlatMap.java:139)
                                                                               at io.reactivex.internal.operators.observable.ObservableFromArray$FromArrayDisposable.run(ObservableFromArray.java:107)
                                                                               at io.reactivex.internal.operators.observable.ObservableFromArray.subscribeActual(ObservableFromArray.java:36)
                                                                               at io.reactivex.Observable.subscribe(Observable.java:10903)
                                                                               at io.reactivex.internal.operators.observable.ObservableFlatMap.subscribeActual(ObservableFlatMap.java:55)
                                                                               at io.reactivex.Observable.subscribe(Observable.java:10903)
                                                                               at io.reactivex.internal.operators.observable.ObservableFlatMap.subscribeActual(ObservableFlatMap.java:55)
                                                                               at io.reactivex.Observable.subscribe(Observable.java:10903)
                                                                               at io.reactivex.internal.operators.observable.ObservableBuffer.subscribeActual(ObservableBuffer.java:44)

解决方法

在file_paths.xml文件中添加root-path 标签

<path>

<root-path name="root_path" path="."/>

</path>