Add Context.createContextAsUser()

Without it, apps (mainline modules) will need to use createPackageContext...,
which is a bit painful.

Bug: 142472686
Test: atest android.content.cts.ContextTest#testCreateContextAsUser
Change-Id: Id640e03862462724df1a4a3101f0b08faafba22f

6 files changed, 44 insertions, 3 deletions

diff --git a/api/system-current.txt b/api/system-current.txt
index 8ed79a3f2338..66302c87239b 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -1358,8 +1358,9 @@ package android.content {
 
   public abstract class Context {
     method @RequiresPermission(android.Manifest.permission.INTERACT_ACROSS_USERS) public boolean bindServiceAsUser(@RequiresPermission android.content.Intent, android.content.ServiceConnection, int, android.os.UserHandle);
+    method @NonNull public android.content.Context createContextAsUser(@NonNull android.os.UserHandle);
     method public abstract android.content.Context createCredentialProtectedStorageContext();
-    method public android.content.Context createPackageContextAsUser(String, int, android.os.UserHandle) throws android.content.pm.PackageManager.NameNotFoundException;
+    method @NonNull public android.content.Context createPackageContextAsUser(@NonNull String, int, @NonNull android.os.UserHandle) throws android.content.pm.PackageManager.NameNotFoundException;
     method @Nullable public abstract java.io.File getPreloadsFileCache();
     method public abstract boolean isCredentialProtectedStorage();
     method public abstract void sendBroadcast(android.content.Intent, @Nullable String, @Nullable android.os.Bundle);
diff --git a/api/test-current.txt b/api/test-current.txt
index 70837a84adfd..478540599fbd 100644
--- a/api/test-current.txt
+++ b/api/test-current.txt
@@ -659,7 +659,8 @@ package android.content {
   }
 
   public abstract class Context {
-    method public android.content.Context createPackageContextAsUser(String, int, android.os.UserHandle) throws android.content.pm.PackageManager.NameNotFoundException;
+    method @NonNull public android.content.Context createContextAsUser(@NonNull android.os.UserHandle);
+    method @NonNull public android.content.Context createPackageContextAsUser(@NonNull String, int, @NonNull android.os.UserHandle) throws android.content.pm.PackageManager.NameNotFoundException;
     method public abstract android.view.Display getDisplay();
     method public abstract int getDisplayId();
     method public android.os.UserHandle getUser();
diff --git a/core/java/android/app/ContextImpl.java b/core/java/android/app/ContextImpl.java
index ef23d5e7a424..2381514a5e3a 100644
--- a/core/java/android/app/ContextImpl.java
+++ b/core/java/android/app/ContextImpl.java
@@ -2203,6 +2203,15 @@ class ContextImpl extends Context {
     }
 
     @Override
+    public Context createContextAsUser(UserHandle user) {
+        try {
+            return createPackageContextAsUser(getPackageName(), mFlags, user);
+        } catch (NameNotFoundException e) {
+            throw new IllegalStateException("Own package not found: package=" + getPackageName());
+        }
+    }
+
+    @Override
     public Context createContextForSplit(String splitName) throws NameNotFoundException {
         if (!mPackageInfo.getApplicationInfo().requestsIsolatedSplitLoading()) {
             // All Splits are always loaded.
diff --git a/core/java/android/content/Context.java b/core/java/android/content/Context.java
index 08817e05e0a5..2dde3ae5909c 100644
--- a/core/java/android/content/Context.java
+++ b/core/java/android/content/Context.java
@@ -5217,8 +5217,9 @@ public abstract class Context {
      */
     @SystemApi
     @TestApi
+    @NonNull
     public Context createPackageContextAsUser(
-            String packageName, @CreatePackageOptions int flags, UserHandle user)
+            @NonNull String packageName, @CreatePackageOptions int flags, @NonNull UserHandle user)
             throws PackageManager.NameNotFoundException {
         if (Build.IS_ENG) {
             throw new IllegalStateException("createPackageContextAsUser not overridden!");
@@ -5227,6 +5228,23 @@ public abstract class Context {
     }
 
     /**
+     * Similar to {@link #createPackageContext(String, int)}, but for the own package with a
+     * different {@link UserHandle}. For example, {@link #getContentResolver()}
+     * will open any {@link Uri} as the given user.
+     *
+     * @hide
+     */
+    @SystemApi
+    @TestApi
+    @NonNull
+    public Context createContextAsUser(@NonNull UserHandle user) {
+        if (Build.IS_ENG) {
+            throw new IllegalStateException("createContextAsUser not overridden!");
+        }
+        return this;
+    }
+
+    /**
      * Creates a context given an {@link android.content.pm.ApplicationInfo}.
      *
      * @hide
diff --git a/core/java/android/content/ContextWrapper.java b/core/java/android/content/ContextWrapper.java
index 0859f97e81a1..f7cd51e7ffbc 100644
--- a/core/java/android/content/ContextWrapper.java
+++ b/core/java/android/content/ContextWrapper.java
@@ -885,6 +885,12 @@ public class ContextWrapper extends Context {
 
     /** @hide */
     @Override
+    public Context createContextAsUser(UserHandle user) {
+        return mBase.createContextAsUser(user);
+    }
+
+    /** @hide */
+    @Override
     @UnsupportedAppUsage
     public Context createApplicationContext(ApplicationInfo application,
             int flags) throws PackageManager.NameNotFoundException {
diff --git a/test-mock/src/android/test/mock/MockContext.java b/test-mock/src/android/test/mock/MockContext.java
index a95b6f11e98a..fcd4701c7630 100644
--- a/test-mock/src/android/test/mock/MockContext.java
+++ b/test-mock/src/android/test/mock/MockContext.java
@@ -758,6 +758,12 @@ public class MockContext extends Context {
 
     /** {@hide} */
     @Override
+    public Context createContextAsUser(UserHandle user) {
+        throw new UnsupportedOperationException();
+    }
+
+    /** {@hide} */
+    @Override
     public int getUserId() {
         throw new UnsupportedOperationException();
     }