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Commit 2536134b authored by Meng Wang's avatar Meng Wang
Browse files

PersistableBundle: writeToStream/readFromStream 

Bug: 143911192
Test: manual sanity test
Change-Id: I208487d572c8148f28fac3307873dfdc90996ae1
parent 69bbb190

api/current.txt

+2 −0
Original line number Diff line number Diff line
@@ -35220,7 +35220,9 @@ package android.os { 
    method public int describeContents();

    method @Nullable public android.os.PersistableBundle getPersistableBundle(@Nullable String);

    method public void putPersistableBundle(@Nullable String, @Nullable android.os.PersistableBundle);

    method @NonNull public static android.os.PersistableBundle readFromStream(@NonNull java.io.InputStream) throws java.io.IOException;

    method public void writeToParcel(android.os.Parcel, int);

    method public void writeToStream(@NonNull java.io.OutputStream) throws java.io.IOException;

    field @NonNull public static final android.os.Parcelable.Creator<android.os.PersistableBundle> CREATOR;

    field public static final android.os.PersistableBundle EMPTY;

  }

core/java/android/os/PersistableBundle.java

+47 −0
Original line number Diff line number Diff line
@@ -16,17 +16,24 @@ 


package android.os;



import static java.nio.charset.StandardCharsets.UTF_8;



import android.annotation.NonNull;

import android.annotation.Nullable;

import android.util.ArrayMap;

import android.util.proto.ProtoOutputStream;



import com.android.internal.util.FastXmlSerializer;

import com.android.internal.util.XmlUtils;



import org.xmlpull.v1.XmlPullParser;

import org.xmlpull.v1.XmlPullParserException;

import org.xmlpull.v1.XmlPullParserFactory;

import org.xmlpull.v1.XmlSerializer;



import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.util.ArrayList;



/**
@@ -339,4 +346,44 @@ public final class PersistableBundle extends BaseBundle implements Cloneable, Pa 


        proto.end(token);

    }



    /**

     * Writes the content of the {@link PersistableBundle} to a {@link OutputStream}.

     *

     * <p>The content can be read by a {@link #readFromStream}.

     *

     * @see #readFromStream

     */

    public void writeToStream(@NonNull OutputStream outputStream) throws IOException {

        FastXmlSerializer serializer = new FastXmlSerializer();

        serializer.setOutput(outputStream, UTF_8.name());

        serializer.startTag(null, "bundle");

        try {

            saveToXml(serializer);

        } catch (XmlPullParserException e) {

            throw new IOException(e);

        }

        serializer.endTag(null, "bundle");

        serializer.flush();

    }



    /**

     * Reads a {@link PersistableBundle} from an {@link InputStream}.

     *

     * <p>The stream must be generated by {@link #writeToStream}.

     *

     * @see #writeToStream

     */

    @NonNull

    public static PersistableBundle readFromStream(@NonNull InputStream inputStream)

            throws IOException {

        try {

            XmlPullParser parser = XmlPullParserFactory.newInstance().newPullParser();

            parser.setInput(inputStream, UTF_8.name());

            parser.next();

            return PersistableBundle.restoreFromXml(parser);

        } catch (XmlPullParserException e) {

            throw new IOException(e);

        }

    }

}