android.os.Parcelable: isStable->getStability (82679a69) · Commits · e / os / android_frameworks_base

core/java/android/os/Parcelable.java

+31 −2

Original line number	Diff line number	Diff line
		@@ -99,6 +99,35 @@ public interface Parcelable {
		@Retention(RetentionPolicy.SOURCE)
		public @interface ContentsFlags {}

		/** @hide */
		@IntDef(flag = true, prefix = { "PARCELABLE_STABILITY_" }, value = {
		PARCELABLE_STABILITY_LOCAL,
		PARCELABLE_STABILITY_VINTF,
		})
		@Retention(RetentionPolicy.SOURCE)
		public @interface Stability {}

		/**
		* Something that is not meant to cross compilation boundaries.
		*
		* Note: unlike binder/Stability.h which uses bitsets to detect stability,
		* since we don't currently have a notion of different local locations,
		* higher stability levels are formed at higher levels.
		*
		* For instance, contained entirely within system partitions.
		* @see #getStability()
		* @see ParcelableHolder
		* @hide
		*/
		public static final int PARCELABLE_STABILITY_LOCAL = 0x0000;
		/**
		* Something that is meant to be used between system and vendor.
		* @see #getStability()
		* @see ParcelableHolder
		* @hide
		*/
		public static final int PARCELABLE_STABILITY_VINTF = 0x0001;

		/**
		* Descriptor bit used with {@link #describeContents()}: indicates that
		* the Parcelable object's flattened representation includes a file descriptor.
		@@ -129,8 +158,8 @@ public interface Parcelable {
		* @return true if this parcelable is stable.
		* @hide
		*/
		default boolean isStable() {
		return false;
		default @Stability int getStability() {
		return PARCELABLE_STABILITY_LOCAL;
		}

		/**

core/java/android/os/ParcelableHolder.java

+10 −9

Original line number	Diff line number	Diff line
		@@ -37,10 +37,10 @@ public final class ParcelableHolder implements Parcelable {
		* if {@link ParcelableHolder} contains value, otherwise, both are null.
		*/
		private Parcel mParcel;
		private boolean mIsStable = false;
		private @Parcelable.Stability int mStability = Parcelable.PARCELABLE_STABILITY_LOCAL;

		public ParcelableHolder(boolean isStable) {
		mIsStable = isStable;
		public ParcelableHolder(@Parcelable.Stability int stability) {
		mStability = stability;
		}

		private ParcelableHolder() {
		@@ -50,11 +50,11 @@ public final class ParcelableHolder implements Parcelable {
		/**
		* {@link ParcelableHolder}'s stability is determined by the parcelable
		* which contains this ParcelableHolder.
		* For more detail refer to {@link Parcelable#isStable}.
		* For more detail refer to {@link Parcelable#getStability}.
		*/
		@Override
		public boolean isStable() {
		return mIsStable;
		public @Parcelable.Stability int getStability() {
		return mStability;
		}

		@NonNull
		@@ -81,7 +81,8 @@ public final class ParcelableHolder implements Parcelable {
		* @return {@code false} if the parcelable's stability is more unstable ParcelableHolder.
		*/
		public synchronized boolean setParcelable(@Nullable Parcelable p) {
		if (p != null && this.isStable() && !p.isStable()) {
		// a ParcelableHolder can only hold things at its stability or higher
		if (p != null && this.getStability() > p.getStability()) {
		return false;
		}
		mParcelable = p;
		@@ -123,7 +124,7 @@ public final class ParcelableHolder implements Parcelable {
		* Read ParcelableHolder from a parcel.
		*/
		public synchronized void readFromParcel(@NonNull Parcel parcel) {
		this.mIsStable = parcel.readBoolean();
		this.mStability = parcel.readInt();

		mParcelable = null;

		@@ -145,7 +146,7 @@ public final class ParcelableHolder implements Parcelable {

		@Override
		public synchronized void writeToParcel(@NonNull Parcel parcel, int flags) {
		parcel.writeBoolean(this.mIsStable);
		parcel.writeInt(this.mStability);

		if (mParcel != null) {
		parcel.writeInt(mParcel.dataSize());