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Commit 42cd062e authored by Hao Ke's avatar Hao Ke Committed by Automerger Merge Worker
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Merge "Adding typed Parcel readParcelableList API." am: edbe912f 

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1899430

Change-Id: Ie32cabcd2e878e9b56c2259a30146ad85202f751
parents 537fa653 edbe912f

core/api/current.txt

+1 −0
Original line number Diff line number Diff line
@@ -31514,6 +31514,7 @@ package android.os { 
    method @Deprecated @Nullable public android.os.Parcelable.Creator<?> readParcelableCreator(@Nullable ClassLoader);

    method @Nullable public <T> android.os.Parcelable.Creator<T> readParcelableCreator(@Nullable ClassLoader, @NonNull Class<T>);

    method @NonNull public <T extends android.os.Parcelable> java.util.List<T> readParcelableList(@NonNull java.util.List<T>, @Nullable ClassLoader);

    method @NonNull public <T> java.util.List<T> readParcelableList(@NonNull java.util.List<T>, @Nullable ClassLoader, @NonNull Class<T>);

    method @Nullable public android.os.PersistableBundle readPersistableBundle();

    method @Nullable public android.os.PersistableBundle readPersistableBundle(@Nullable ClassLoader);

    method @Deprecated @Nullable public java.io.Serializable readSerializable();

core/java/android/os/Parcel.java

+34 −9
Original line number Diff line number Diff line
@@ -3650,22 +3650,47 @@ public final class Parcel { 
    @NonNull

    public final <T extends Parcelable> List<T> readParcelableList(@NonNull List<T> list,

            @Nullable ClassLoader cl) {

        final int N = readInt();

        if (N == -1) {

        return readParcelableListInternal(list, cl, /*clazz*/ null);

    }



    /**

     * Same as {@link #readParcelableList(List, ClassLoader)} but accepts {@code clazz} parameter as

     * the type required for each item.

     *

     * @throws BadParcelableException Throws BadParcelableException if the item to be deserialized

     * is not an instance of that class or any of its children classes or there was an error

     * trying to instantiate an element.

     */

    @NonNull

    public <T> List<T> readParcelableList(@NonNull List<T> list,

            @Nullable ClassLoader cl, @NonNull Class<T> clazz) {

        Objects.requireNonNull(list);

        Objects.requireNonNull(clazz);

        return readParcelableListInternal(list, cl, clazz);

    }



    /**

     * @param clazz The type of the object expected or {@code null} for performing no checks.

     */

    @NonNull

    private <T> List<T> readParcelableListInternal(@NonNull List<T> list,

            @Nullable ClassLoader cl, @Nullable Class<T> clazz) {

        final int n = readInt();

        if (n == -1) {

            list.clear();

            return list;

        }



        final int M = list.size();

        final int m = list.size();

        int i = 0;

        for (; i < M && i < N; i++) {

            list.set(i, (T) readParcelable(cl));

        for (; i < m && i < n; i++) {

            list.set(i, (T) readParcelableInternal(cl, clazz));

        }

        for (; i<N; i++) {

            list.add((T) readParcelable(cl));

        for (; i < n; i++) {

            list.add((T) readParcelableInternal(cl, clazz));

        }

        for (; i<M; i++) {

            list.remove(N);

        for (; i < m; i++) {

            list.remove(n);

        }

        return list;

    }