diff options
Diffstat (limited to 'src/android/support/v4/os')
3 files changed, 155 insertions, 0 deletions
diff --git a/src/android/support/v4/os/ParcelableCompat.java b/src/android/support/v4/os/ParcelableCompat.java new file mode 100644 index 0000000..eb40359 --- /dev/null +++ b/src/android/support/v4/os/ParcelableCompat.java @@ -0,0 +1,59 @@ +/* + * Copyright (C) 2011 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package android.support.v4.os; + +import android.os.Parcel; +import android.os.Parcelable; + +/** + * Helper for accessing features in {@link android.os.Parcelable} + * introduced after API level 4 in a backwards compatible fashion. + */ +public class ParcelableCompat { + + /** + * Factory method for {@link android.os.Parcelable.Creator}. + * + * @param callbacks Creator callbacks implementation. + * @return New creator. + */ + public static <T> Parcelable.Creator<T> newCreator( + ParcelableCompatCreatorCallbacks<T> callbacks) { + if (android.os.Build.VERSION.SDK_INT >= 13) { + ParcelableCompatCreatorHoneycombMR2Stub.instantiate(callbacks); + } + return new CompatCreator<T>(callbacks); + } + + static class CompatCreator<T> implements Parcelable.Creator<T> { + final ParcelableCompatCreatorCallbacks<T> mCallbacks; + + public CompatCreator(ParcelableCompatCreatorCallbacks<T> callbacks) { + mCallbacks = callbacks; + } + + @Override + public T createFromParcel(Parcel source) { + return mCallbacks.createFromParcel(source, null); + } + + @Override + public T[] newArray(int size) { + return mCallbacks.newArray(size); + } + } +} diff --git a/src/android/support/v4/os/ParcelableCompatCreatorCallbacks.java b/src/android/support/v4/os/ParcelableCompatCreatorCallbacks.java new file mode 100644 index 0000000..a577d6f --- /dev/null +++ b/src/android/support/v4/os/ParcelableCompatCreatorCallbacks.java @@ -0,0 +1,47 @@ +/* + * Copyright (C) 2011 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package android.support.v4.os; + +import android.os.Parcel; +import android.os.Parcelable; + +/** + * Callbacks a {@link Parcelable} creator should implement. + */ +public interface ParcelableCompatCreatorCallbacks<T> { + + /** + * Create a new instance of the Parcelable class, instantiating it + * from the given Parcel whose data had previously been written by + * {@link Parcelable#writeToParcel Parcelable.writeToParcel()} and + * using the given ClassLoader. + * + * @param in The Parcel to read the object's data from. + * @param loader The ClassLoader that this object is being created in. + * @return Returns a new instance of the Parcelable class. + */ + public T createFromParcel(Parcel in, ClassLoader loader); + + /** + * Create a new array of the Parcelable class. + * + * @param size Size of the array. + * @return Returns an array of the Parcelable class, with every entry + * initialized to null. + */ + public T[] newArray(int size); +} diff --git a/src/android/support/v4/os/ParcelableCompatHoneycombMR2.java b/src/android/support/v4/os/ParcelableCompatHoneycombMR2.java new file mode 100644 index 0000000..dd7ea81 --- /dev/null +++ b/src/android/support/v4/os/ParcelableCompatHoneycombMR2.java @@ -0,0 +1,49 @@ +/* + * Copyright (C) 2011 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package android.support.v4.os; + +import android.os.Parcel; +import android.os.Parcelable; + +class ParcelableCompatCreatorHoneycombMR2Stub { + static <T> Parcelable.Creator<T> instantiate(ParcelableCompatCreatorCallbacks<T> callbacks) { + return new ParcelableCompatCreatorHoneycombMR2<T>(callbacks); + } +} + +class ParcelableCompatCreatorHoneycombMR2<T> implements Parcelable.ClassLoaderCreator<T> { + private final ParcelableCompatCreatorCallbacks<T> mCallbacks; + + public ParcelableCompatCreatorHoneycombMR2(ParcelableCompatCreatorCallbacks<T> callbacks) { + mCallbacks = callbacks; + } + + @Override + public T createFromParcel(Parcel in) { + return mCallbacks.createFromParcel(in, null); + } + + @Override + public T createFromParcel(Parcel in, ClassLoader loader) { + return mCallbacks.createFromParcel(in, loader); + } + + @Override + public T[] newArray(int size) { + return mCallbacks.newArray(size); + } +} |