Merge "Prevent NPE in ActivityStack#shouldbeVisible." into oc-dev (ffd0dd69) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/am/ActivityStack.java

+2 −2

Original line number	Diff line number	Diff line
		@@ -232,7 +232,7 @@ class ActivityStack<T extends StackWindowController> extends ConfigurationContai
		static final int STACK_VISIBLE = 1;
		// Stack is considered visible, but only becuase it has activity that is visible behind other
		// activities and there is a specific combination of stacks.
		private static final int STACK_VISIBLE_ACTIVITY_BEHIND = 2;
		static final int STACK_VISIBLE_ACTIVITY_BEHIND = 2;

		@VisibleForTesting
		/* The various modes for the method {@link #removeTask}. */
		@@ -1652,7 +1652,7 @@ class ActivityStack<T extends StackWindowController> extends ConfigurationContai

		if (StackId.isBackdropToTranslucentActivity(mStackId)
		&& hasVisibleBehindActivity() && StackId.isHomeOrRecentsStack(topStackId)
		&& !topStack.topActivity().fullscreen) {
		&& (topStack.topActivity() == null \|\| !topStack.topActivity().fullscreen)) {
		// The fullscreen or assistant stack should be visible if it has a visible behind
		// activity behind the home or recents stack that is translucent.
		return STACK_VISIBLE_ACTIVITY_BEHIND;

services/tests/servicestests/src/com/android/server/am/ActivityStackTests.java

+22 −0

Original line number	Diff line number	Diff line
		@@ -21,6 +21,7 @@ import static org.junit.Assert.assertNotNull;
		import static org.junit.Assert.assertNull;
		import static org.junit.Assert.assertTrue;

		import android.app.ActivityManager;
		import android.content.ComponentName;
		import android.content.pm.ActivityInfo;
		import android.platform.test.annotations.Presubmit;
		@@ -97,4 +98,25 @@ public class ActivityStackTests extends ActivityTestsBase {

		testStack.stopActivityLocked(activityRecord);
		}

		/**
		* This test verifies that {@link ActivityStack#STACK_VISIBLE_ACTIVITY_BEHIND} is returned from
		* {@link ActivityStack#shouldBeVisible(ActivityRecord)} from a fullscreen workspace stack with
		* a visible behind activity when top focused stack is the home stack.
		*/
		@Test
		public void testShouldBeVisibleWithVisibleBehindActivity() throws Exception {
		final ActivityManagerService service = createActivityManagerService();
		final TaskRecord task = createTask(service, testActivityComponent,
		ActivityManager.StackId.FULLSCREEN_WORKSPACE_STACK_ID);
		final ActivityStack fullscreenWorkspaceStackId = task.getStack();
		final ActivityStack homeStack = service.mStackSupervisor.getStack(
		ActivityManager.StackId.HOME_STACK_ID, true /createStaticStackIfNeeded/,
		true /onTop/);
		final ActivityRecord activityRecord = createActivity(service, testActivityComponent, task);
		service.mStackSupervisor.setFocusStackUnchecked("testEmptyStackShouldBeVisible", homeStack);
		service.mStackSupervisor.requestVisibleBehindLocked(activityRecord, true);
		assertEquals(ActivityStack.STACK_VISIBLE_ACTIVITY_BEHIND,
		fullscreenWorkspaceStackId.shouldBeVisible(null /starting/));
		}
		}

services/tests/servicestests/src/com/android/server/am/ActivityTestsBase.java

+4 −2

Original line number	Diff line number	Diff line
		@@ -151,9 +151,12 @@ public class ActivityTestsBase {
		* setup not available in the test environment. Also specifies an injector for
		*/
		protected static class TestActivityStackSupervisor extends ActivityStackSupervisor {
		private final ActivityDisplay mDisplay;

		public TestActivityStackSupervisor(ActivityManagerService service, Looper looper) {
		super(service, looper);
		mWindowManager = prepareMockWindowManager();
		mDisplay = new ActivityDisplay();
		}

		// No home stack is set.
		@@ -185,9 +188,8 @@ public class ActivityTestsBase {

		public <T extends ActivityStack> T createTestStack(ActivityManagerService service,
		int stackId, boolean onTop) {
		final ActivityDisplay display = new ActivityDisplay();
		final TestActivityContainer container =
		new TestActivityContainer(service, stackId, display, onTop);
		new TestActivityContainer(service, stackId, mDisplay, onTop);
		mActivityContainers.put(stackId, container);
		return (T) container.getStack();
		}