Use FileProvider to get shared file uri.tFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION) Set intent flag to grant read / write uri permissions to startup activity.Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE)
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How To Use FileProvider In Code.īelow is the general usage about how to use FileProvider. This way the real local file path will not exposed to other apps. To share different type folder use different xml tag.Įach tag has two attributes, name and path, name attribute value is the path value in the FileProvider uri when it is accessed by other apps.įor example if name value is “share”, then the FileProvider uri should be something like content:///share/abc.png. įrom above example, we can see that you can share both root, internal, external folders in android. You can see comments for each element explanation. In our example the shared folder definition xml file name is shared_file_paths.xml, below is it’s content. android:name value must be _PROVIDER_PATHS and android:resource value is a xml file name, the name can be any value but it should be located in app / res / xml folder.Ģ.2 Define Shared Folder In Xml Resource File. It has two attributes android:name and android:resource. meta-data sub element : The provider meta-data sub element is used to specify the shared folder definition xml file.If you set grantUriPermissions value to false, it will throw SecurityException( “Provider must grant uri permissions”). tFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION) You can use intent setFlags method to grant FileProvider access permission to other apps like below. This means you need to grant uri read / write permission to other apps that can access your shared files. android:grantUriPermissions : This attribute value must be true.If you set it’s value to true a SecurityException( “Provider must not be exported”) will be thrown. android:exported : This attribute value must be false, because if set it to true then all other apps can use this FileProvider without grant permission.android:name : This attribute value must be 4.content.FileProvider.And each app package name in android is unique. You can use $ as authority value, it will use your app package name automatically. It is also used in FileProvider accessing uri such as content:/// because FileProvider is a sub class of ContentProvider.
Please add below provider definition in Android project AndroidManifest.xml first to use FileProvider. 2.1 Define FileProvider In AndroidManifest.xml. Create a share folder xml file to indicate which folder will be shared.Declare FileProvider provider component in AndroidManifest.xml file.Then other apps can not access those files later. When your app destroy, the shared folder permission will also be revoked.This can make your app more user friendly. Your app do not need to ask user to grant WRITE_EXTERNAL_STORAGE permission always.You can fully control which file to share to which app more accurately.Using FileProvider you can make your app files more secure in following ways.
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