Merge "Support fragment transition" into sc-dev (eda0e624) · Commits · e / os / android_frameworks_base

packages/SettingsLib/SettingsTransition/src/com/android/settingslib/transition/SettingsTransitionHelper.java

+48 −2

Original line number	Diff line number	Diff line
		@@ -25,6 +25,7 @@ import android.view.animation.AnimationUtils;
		import android.view.animation.Interpolator;

		import androidx.core.os.BuildCompat;
		import androidx.fragment.app.Fragment;

		import com.google.android.material.transition.platform.FadeThroughProvider;
		import com.google.android.material.transition.platform.MaterialSharedAxis;
		@@ -92,7 +93,7 @@ public class SettingsTransitionHelper {
		* triggered when the page is launched/entering.
		*/
		public static void applyForwardTransition(Activity activity) {
		if (!BuildCompat.isAtLeastS()) {
		if (!isSettingsTransitionEnabled()) {
		return;
		}
		if (activity == null) {
		@@ -118,7 +119,7 @@ public class SettingsTransitionHelper {
		* previously-started Activity.
		*/
		public static void applyBackwardTransition(Activity activity) {
		if (!BuildCompat.isAtLeastS()) {
		if (!isSettingsTransitionEnabled()) {
		return;
		}
		if (activity == null) {
		@@ -134,4 +135,49 @@ public class SettingsTransitionHelper {
		window.setReturnTransition(backward);
		window.setReenterTransition(backward);
		}

		/**
		* Apply the forward transition to the {@link Fragment}, including Exit Transition and Enter
		* Transition.
		*
		* The Exit Transition takes effect when leaving the page, while the Enter Transition is
		* triggered when the page is launched/entering.
		*/
		public static void applyForwardTransition(Fragment fragment) {
		if (!isSettingsTransitionEnabled()) {
		return;
		}
		if (fragment == null) {
		Log.w(TAG, "applyForwardTransition: Invalid fragment!");
		return;
		}
		final MaterialSharedAxis forward = createSettingsSharedAxis(fragment.getContext(), true);
		fragment.setExitTransition(forward);
		fragment.setEnterTransition(forward);
		}

		/**
		* Apply the backward transition to the {@link Fragment}, including Return Transition and
		* Reenter Transition.
		*
		* Return Transition will be used to move Views out of the scene when the Window is preparing
		* to close. Reenter Transition will be used to move Views in to the scene when returning from a
		* previously-started Fragment.
		*/
		public static void applyBackwardTransition(Fragment fragment) {
		if (!isSettingsTransitionEnabled()) {
		return;
		}
		if (fragment == null) {
		Log.w(TAG, "applyBackwardTransition: Invalid fragment!");
		return;
		}
		final MaterialSharedAxis backward = createSettingsSharedAxis(fragment.getContext(), false);
		fragment.setReturnTransition(backward);
		fragment.setReenterTransition(backward);
		}

		private static boolean isSettingsTransitionEnabled() {
		return BuildCompat.isAtLeastS();
		}
		}