Final push to build against SDK.

The bulk of the work needed to get MediaProvider building against
the "system_current" SDK surface has been slowly merged over the
last few months, and this change makes the last few adjustments.

This adds a new StorageVolumeCallback which is simpler version of
StorageEventListener that simply delivers the changed StorageVolume.

Move DownloadManager logic into a onMediaStoreDownloadsDeleted()
method which hides the implementation details of how the OS connects
with that implementation.

Make local copies of some ExifInterface parsing logic; they could
be added to the androidx version in an unbundled release.  Make a
local copy of RedactingFileDescriptor, since it's only needed for
the next few weeks until FUSE is globally enabled.

Bug: 137890034
Test: atest --test-mapping packages/providers/MediaProvider
Change-Id: Ib416eb8724781bdd234c8b7d728dee8b695ad6ac

1 files changed, 34 insertions, 2 deletions

diff --git a/core/java/android/content/ContentResolver.java b/core/java/android/content/ContentResolver.java
index 1d3c6505f677..592190e0ec11 100644
--- a/core/java/android/content/ContentResolver.java
+++ b/core/java/android/content/ContentResolver.java
@@ -3851,15 +3851,47 @@ public abstract class ContentResolver implements ContentInterface {
         }
     }
 
+    /**
+     * Decode a path generated by {@link #encodeToFile(Uri)} back into
+     * the original {@link Uri}.
+     * <p>
+     * This is used to offer a way to intercept filesystem calls in
+     * {@link ContentProvider} unaware code and redirect them to a
+     * {@link ContentProvider} when they attempt to use {@code _DATA} columns
+     * that are otherwise deprecated.
+     *
+     * @hide
+     */
+    @SystemApi
+    public static @NonNull Uri decodeFromFile(@NonNull File file) {
+        return translateDeprecatedDataPath(file.getAbsolutePath());
+    }
+
+    /**
+     * Encode a {@link Uri} into an opaque filesystem path which can then be
+     * resurrected by {@link #decodeFromFile(File)}.
+     * <p>
+     * This is used to offer a way to intercept filesystem calls in
+     * {@link ContentProvider} unaware code and redirect them to a
+     * {@link ContentProvider} when they attempt to use {@code _DATA} columns
+     * that are otherwise deprecated.
+     *
+     * @hide
+     */
+    @SystemApi
+    public static @NonNull File encodeToFile(@NonNull Uri uri) {
+        return new File(translateDeprecatedDataPath(uri));
+    }
+
     /** {@hide} */
-    public static Uri translateDeprecatedDataPath(String path) {
+    public static @NonNull Uri translateDeprecatedDataPath(@NonNull String path) {
         final String ssp = "//" + path.substring(DEPRECATE_DATA_PREFIX.length());
         return Uri.parse(new Uri.Builder().scheme(SCHEME_CONTENT)
                 .encodedOpaquePart(ssp).build().toString());
     }
 
     /** {@hide} */
-    public static String translateDeprecatedDataPath(Uri uri) {
+    public static @NonNull String translateDeprecatedDataPath(@NonNull Uri uri) {
         return DEPRECATE_DATA_PREFIX + uri.getEncodedSchemeSpecificPart().substring(2);
     }
 }