FileProvider.getUriForFile 不将图像保存到图库并且无法访问文件 OnActivityResult

FileProvider.getUriForFile doesn't save image to gallery and can't access file OnActivityResult

在我的应用中,尝试使用相机应用捕捉图像。 我正在更新我的应用程序以在指定用于保存图像的文件路径时使用 FileProvider.getUriForFile,因为 Uri.fromFile 已被弃用。

事先使用 Uri.fromFile 工作正常。但是我无法使用 FileProvider.getUriForFile.

让它工作

我正在创建图像文件如下:

String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
            String imageFileName = "JPEG_" + timeStamp + "_";
            File storageDir =  Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
            File image = File.createTempFile(
                imageFileName,  /* prefix */
                ".jpg",         /* suffix */
                storageDir      /* directory */
            );

            mCurrentPhotoPath = "file:" + image.getAbsolutePath();
            return image;

然后,根据目标sdk,我得到图片URI:

if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
                            jobImageURI = Uri.fromFile(photoFile);
                        } else {
                            jobImageURI = FileProvider.getUriForFile(OrderDetails.this, BuildConfig.APPLICATION_ID + ".provider",photoFile);
                        }

我已经根据 android 开发人员文档更新了应用程序清单 xml 以包含提供程序。 我有一个包含路径的 provider_paths.xml 文件:

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

然后我启动相机:

takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, jobImageURI);
startActivityForResult(takePictureIntent, CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE);

然而,在拍摄照片并返回到 onActivityResult 函数后,我在图像文件中读回。 该图像未保存到图库中,因为我正在从图库中读回最后一个文件,但它不存在。 我也无法使用上面 jobImageURI 中的路径访问该文件。

是我提供的 provider_paths.xml 文件的路径不正确,还是我无法访问图片?

试试这个

res 目录的 xml 文件夹下创建一个 xml 文件

provider_path.xml

<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
    <external-path name="my_images"
        path="Android/data/yourAppPackageName/files/Pictures" />
</paths>

AndroidManifest.xml

中注册提供商
<provider
            android:name="android.support.v4.content.FileProvider"
            android:authorities="yourAppPackageName.provider"
            android:exported="false"
            android:grantUriPermissions="true">

            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/provider_path"/>
        </provider>

add these permissions

<uses-feature android:name="android.hardware.camera"
        android:required="true" />

<uses-permission android:name="android.permission.CAMERA"/>

on Camera Button Click call dispatchTakePictureIntent()

private void dispatchTakePictureIntent() {
        Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        // Ensure that there's a camera activity to handle the intent
        if (takePictureIntent.resolveActivity(getActivity().getPackageManager()) != null) {
            // Create the File where the photo should go
            File photoFile = null;
            try {
                photoFile = createImageFile();
            } catch (IOException ex) {
                // Error occurred while creating the File
            }
            // Continue only if the File was successfully created
            if (photoFile != null) {
                Uri photoURI = FileProvider.getUriForFile(getActivity(),
                        "com.arantico.servicepro.provider",
                        photoFile);
                takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
                startActivityForResult(takePictureIntent, REQUEST_TAKE_PHOTO);
            }
        }
    }




    private File createImageFile() throws IOException {
        // Create an image file name
        String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
        String imageFileName = "JPEG_" + timeStamp + "_";
        File storageDir = getActivity().getExternalFilesDir(Environment.DIRECTORY_PICTURES);
        File image = File.createTempFile(
                imageFileName,  /* prefix */
                ".jpg",         /* suffix */
                storageDir      /* directory */
        );

        // Save a file: path for use with ACTION_VIEW intents
        mCurrentPhotoPath = image.getAbsolutePath();
        return image;
    }

此处mCurrentPhotoPath将显示存储文件的路径