Simplify app prediction service check

In support of sharesheet unbundling:

This change removes the use of the passed in boolean flag to
determine AppPredictionService availability and instead falls
back checking for a non null value from
PackageManager#getAppPredictionServicePackage()

This PackageManager call can now be made directly from outside
of system_server, enabling progress towards sharesheet unbundling.

Bug: 220895016
Test: Enable unbundled sharesheet; share app content; observe share targets
Change-Id: I3bb962dd750dfeb23be7aba668ef7d9de0ef4ce1

1 files changed, 5 insertions, 45 deletions

diff --git a/java/src/com/android/intentresolver/ChooserActivity.java b/java/src/com/android/intentresolver/ChooserActivity.java
index 989b4768..d5dff9ff 100644
--- a/java/src/com/android/intentresolver/ChooserActivity.java
+++ b/java/src/com/android/intentresolver/ChooserActivity.java
@@ -24,27 +24,12 @@ import android.util.Log;
 
 /**
  * Activity for selecting which application ought to handle an ACTION_SEND intent.
- *
- * TODO: this temporary implementation inherits from the system-side ChooserActivity to avoid
- * duplicating code while we're validating the feasibility of the unbundling plans. Architecturally,
- * this is almost exactly equivalent to the "unbundling phase" in which the chooser UI is
- * implemented in the new project. Once we can verify that this works at (or near) parity, we can
- * copy over the source code of the original ChooserActivity instead of inheriting from it here, and
- * then we'll be able to make divergent changes much more quickly. See TODO comments in this file
- * for notes on performing that refactoring step.
  */
 public class ChooserActivity extends com.android.internal.app.ChooserActivity {
     private static final String TAG = "ChooserActivity";
 
     private IBinder mPermissionToken;
-    private boolean mIsAppPredictionServiceAvailable;
-
-    /* TODO: the first section of this file contains overrides for ChooserActivity methods that need
-     * to be implemented differently in the delegated version. When the two classes are merged
-     * together, the implementations given here should replace the originals. Rationales for the
-     * replacements are provided in implementation comments (which could be removed later). */
 
-    /* The unbundled chooser needs to use the permission-token-based API to start activities. */
     @Override
     public boolean startAsCallerImpl(Intent intent, Bundle options, boolean ignoreTargetSecurity,
             int userId) {
@@ -53,42 +38,17 @@ public class ChooserActivity extends com.android.internal.app.ChooserActivity {
         return true;
     }
 
-    /* TODO: the remaining methods below include some implementation details specifically related to
-     * the temporary inheritance-based design, which may need to be removed or adapted when the two
-     * classes are merged together. */
-
     @Override
     protected void onCreate(Bundle savedInstanceState) {
-        boolean shouldShowUi = processIntent();
-        if (shouldShowUi) {
-            super.onCreate(savedInstanceState);
-        } else {
-            super_onCreate(savedInstanceState);  // Skip up to Activity::onCreate().
-            finish();
-        }
-    }
-
-    @Override
-    public boolean isAppPredictionServiceAvailable() {
-        return mIsAppPredictionServiceAvailable;
-    }
-
-    /**
-     * Process the intent that was used to launch the unbundled chooser, and return true if the
-     * chooser should continue to initialize as in the full Sharesheet UI, or false if the activity
-     * should exit immediately.
-     */
-    private boolean processIntent() {
         mPermissionToken = getIntent().getExtras().getBinder(
                 ActivityTaskManager.EXTRA_PERMISSION_TOKEN);
-        mIsAppPredictionServiceAvailable = getIntent().getExtras().getBoolean(
-                EXTRA_IS_APP_PREDICTION_SERVICE_AVAILABLE);
 
-        if (mPermissionToken == null) {
+        if (mPermissionToken != null) {
+            super.onCreate(savedInstanceState);
+        } else {
             Log.e(TAG, "No permission token to launch activities from chooser");
-            return false;
+            super_onCreate(savedInstanceState);  // Skip up to Activity::onCreate().
+            finish();
         }
-
-        return true;
     }
 }