I am trying to get an image from the camera and save it directly to my app's private files directory. For security concerns, the image should not be publicly accessible at any time.
In general, the way you grant temporary access to a private file is to use a ContentProvider and set the GRANT_WRITE_URI_PERMISSION flag in the Intent. Following the documentation in FileProvider, I have done the following:
AndroidManfiest.xml
<manifest>
...
<application>
...
<provider
android:authorities="com.my.domain"
android:name="android.support.v4.content.FileProvider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/file_paths" />
</provider>
...
res/xml/file_paths.xml
<paths xmlns:android="http://schemas.android.com/apk/res/android">
<files-path name="my_images" path="images/"/>
</paths>
When launching the camera activity, I execute the following from an activity:
File imageFile = getInternalImageFile();
Uri captureUri = FileProvider.getUriForFile(this, "com.my.domain", imageFile);
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
// grant temporary access to the file
intent.setData(captureUri);
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
// tell the camera where to save the file
intent.putExtra(MediaStore.EXTRA_OUTPUT, captureUri);
startActivityForResult(intent, IMAGE_CAPTURE_REQUEST_CODE);
This however results in the camera app returning immediately without doing anything. I suspect because it's not expecting there to be any data set on intent (Intent.setData()).
The above strategy isn't working out so well. So, how can I securely save an image captured from the camera directly to my app's private files directory?
You can use below code to get all images from specific folder. 1) First you need to define File object to get the storage and appened the name of the folder you want to read. File folder = new File(Environment. getExternalStorageDirectory().
The photos you taken on phone camera will be saved under dcim folder in the internal storage or filemanager in android mobiles,so if you want to open gallery photos in file manager then click on DCIM folder and then click on camera to view taken photos and videos of your mobile.
Run the application on an Android phone. Selecting "Take photo" will open your camera. Finally, the image clicked will be displayed in the ImageView. Selecting "Choose from Gallery" will open your gallery (note that the image captured earlier has been added to the phone gallery).
i had same issue, but i solved it using clipData.
Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
intent.setClipData(ClipData.newRawUri(null, contentUri));
intent.putExtra(MediaStore.EXTRA_OUTPUT, contentUri);
http://developer.android.com/reference/android/content/Intent.html#setClipData(android.content.ClipData)
The ClipData in an intent is not used for Intent matching or other such operations. Semantically it is like extras, used to transmit additional data with the Intent. The main feature of using this over the extras for data is that FLAG_GRANT_READ_URI_PERMISSION and FLAG_GRANT_WRITE_URI_PERMISSION will operate on any URI items included in the clip data. This is useful, in particular, if you want to transmit an Intent containing multiple content: URIs for which the recipient may not have global permission to access the content provider.
i hope this help you.
Pd: Sorry for my english. :)
So, how can I securely save an image captured from the camera directly to my app's private files directory?
Take the picture yourself, using android.hardware.Camera
. There is no guarantee that the user will have a camera app available that knows how to save data to content://
Uri
paths. They are supposed to support them, but not all do. For example, the Google Camera app did not support a content://
Uri
for ACTION_VIDEO_CAPTURE
up through June 2016.
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