Fix currentAnimationTimeMillis to use vsync time am: a2acb4f077 am: 936166fd5b (432aeedd) · Commits · e / os / android_frameworks_base

core/java/android/view/Choreographer.java

+3 −0

Original line number	Diff line number	Diff line
		@@ -25,6 +25,7 @@ import android.os.SystemProperties;
		import android.os.Trace;
		import android.util.Log;
		import android.util.TimeUtils;
		import android.view.animation.AnimationUtils;

		import java.io.PrintWriter;

		@@ -608,6 +609,7 @@ public final class Choreographer {

		try {
		Trace.traceBegin(Trace.TRACE_TAG_VIEW, "Choreographer#doFrame");
		AnimationUtils.lockAnimationClock(frameTimeNanos / TimeUtils.NANOS_PER_MS);

		mFrameInfo.markInputHandlingStart();
		doCallbacks(Choreographer.CALLBACK_INPUT, frameTimeNanos);
		@@ -620,6 +622,7 @@ public final class Choreographer {

		doCallbacks(Choreographer.CALLBACK_COMMIT, frameTimeNanos);
		} finally {
		AnimationUtils.unlockAnimationClock();
		Trace.traceEnd(Trace.TRACE_TAG_VIEW);
		}

+33 −1

Original line number	Diff line number	Diff line
		@@ -44,6 +44,31 @@ public class AnimationUtils {
		private static final int TOGETHER = 0;
		private static final int SEQUENTIALLY = 1;

		private static class AnimationState {
		boolean animationClockLocked;
		long currentVsyncTimeMillis;
		long lastReportedTimeMillis;
		};

		private static ThreadLocal<AnimationState> sAnimationState
		= new ThreadLocal<AnimationState>() {
		@Override
		protected AnimationState initialValue() {
		return new AnimationState();
		}
		};

		/** @hide */
		public static void lockAnimationClock(long vsyncMillis) {
		AnimationState state = sAnimationState.get();
		state.animationClockLocked = true;
		state.currentVsyncTimeMillis = vsyncMillis;
		}

		/** @hide */
		public static void unlockAnimationClock() {
		sAnimationState.get().animationClockLocked = false;
		}

		/**
		* Returns the current animation time in milliseconds. This time should be used when invoking
		@@ -56,7 +81,14 @@ public class AnimationUtils {
		* @see android.os.SystemClock
		*/
		public static long currentAnimationTimeMillis() {
		return SystemClock.uptimeMillis();
		AnimationState state = sAnimationState.get();
		if (state.animationClockLocked) {
		// It's important that time never rewinds
		return Math.max(state.currentVsyncTimeMillis,
		state.lastReportedTimeMillis);
		}
		state.lastReportedTimeMillis = SystemClock.uptimeMillis();
		return state.lastReportedTimeMillis;
		}

		/**