Merge "Fix NPE when invoking Context#isUiContext" into rvc-dev am: 5c25605da0 (8d53c79a) · Commits · e / os / android_frameworks_base

core/java/android/app/ContextImpl.java

+22 −17

Original line number	Diff line number	Diff line
		@@ -1900,26 +1900,31 @@ class ContextImpl extends Context {

		@Override
		public Object getSystemService(String name) {
		if (vmIncorrectContextUseEnabled()) {
		// We may override this API from outer context.
		final boolean isUiContext = isUiContext() \|\| getOuterContext().isUiContext();
		final boolean isUiContext = isUiContext() \|\| isOuterUiContext();
		// Check incorrect Context usage.
		if (isUiComponent(name) && !isUiContext && vmIncorrectContextUseEnabled()) {
		if (isUiComponent(name) && !isUiContext) {
		final String errorMessage = "Tried to access visual service "
		+ SystemServiceRegistry.getSystemServiceClassName(name)
		+ " from a non-visual Context:" + getOuterContext();
		final String message = "Visual services, such as WindowManager, WallpaperService or "
		+ "LayoutInflater should be accessed from Activity or other visual Context. "
		+ "Use an Activity or a Context created with "
		+ "Context#createWindowContext(int, Bundle), which are adjusted to the "
		+ "configuration and visual bounds of an area on screen.";
		final String message = "Visual services, such as WindowManager, WallpaperService "
		+ "or LayoutInflater should be accessed from Activity or other visual "
		+ "Context. Use an Activity or a Context created with "
		+ "Context#createWindowContext(int, Bundle), which are adjusted to "
		+ "the configuration and visual bounds of an area on screen.";
		final Exception exception = new IllegalAccessException(errorMessage);
		StrictMode.onIncorrectContextUsed(message, exception);
		Log.e(TAG, errorMessage + message, exception);
		Log.e(TAG, errorMessage + " " + message, exception);
		}
		}

		return SystemServiceRegistry.getSystemService(this, name);
		}

		private boolean isOuterUiContext() {
		return getOuterContext() != null && getOuterContext().isUiContext();
		}

		@Override
		public String getSystemServiceName(Class<?> serviceClass) {
		return SystemServiceRegistry.getSystemServiceName(serviceClass);
		@@ -2371,7 +2376,7 @@ class ContextImpl extends Context {
		context.setResources(createResources(mToken, mPackageInfo, mSplitName, displayId,
		overrideConfiguration, getDisplayAdjustments(displayId).getCompatibilityInfo(),
		mResources.getLoaders()));
		context.mIsUiContext = isUiContext() \|\| getOuterContext().isUiContext();
		context.mIsUiContext = isUiContext() \|\| isOuterUiContext();
		return context;
		}

core/java/android/content/ContextWrapper.java

+3 −0

Original line number	Diff line number	Diff line
		@@ -1151,6 +1151,9 @@ public class ContextWrapper extends Context {
		*/
		@Override
		public boolean isUiContext() {
		if (mBase == null) {
		return false;
		}
		return mBase.isUiContext();
		}
		}

core/tests/coretests/src/android/content/ContextTest.java

+23 −0

Original line number	Diff line number	Diff line
		@@ -23,6 +23,7 @@ import static android.view.Display.DEFAULT_DISPLAY;
		import static com.google.common.truth.Truth.assertThat;

		import static org.junit.Assert.assertEquals;
		import static org.junit.Assert.assertFalse;
		import static org.junit.Assert.assertTrue;

		import android.app.ActivityThread;
		@@ -180,4 +181,26 @@ public class ContextTest {
		VIRTUAL_DISPLAY_FLAG_PUBLIC \| VIRTUAL_DISPLAY_FLAG_OWN_CONTENT_ONLY);
		return virtualDisplay.getDisplay();
		}

		@Test
		public void testIsUiContext_ContextWrapper() {
		ContextWrapper wrapper = new ContextWrapper(null /* base */);

		assertFalse(wrapper.isUiContext());

		wrapper = new ContextWrapper(new TestUiContext());

		assertTrue(wrapper.isUiContext());
		}

		private static class TestUiContext extends ContextWrapper {
		TestUiContext() {
		super(null /* base */);
		}

		@Override
		public boolean isUiContext() {
		return true;
		}
		}
		}