content: /*
   * 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.nfc;
  
  import android.os.Parcel;
  import android.os.Parcelable;
  
  import java.io.IOException;
  
  /**
   * Class used to pipe transceive result from the NFC service.
   *
   * @hide
   */
  public final class TransceiveResult implements Parcelable {
      public static final int RESULT_SUCCESS = 0;
      public static final int RESULT_FAILURE = 1;
      public static final int RESULT_TAGLOST = 2;
      public static final int RESULT_EXCEEDED_LENGTH = 3;
  
      final int mResult;
      final byte[] mResponseData;
  
      public TransceiveResult(final int result, final byte[] data) {
          mResult = result;
          mResponseData = data;
      }
  
      public byte[] getResponseOrThrow() throws IOException {
          switch (mResult) {
              case RESULT_SUCCESS:
                  return mResponseData;
              case RESULT_TAGLOST:
                  throw new TagLostException("Tag was lost.");
              case RESULT_EXCEEDED_LENGTH:
                  throw new IOException("Transceive length exceeds supported maximum");
              default:
                  throw new IOException("Transceive failed");
          }
      }
  
      @Override
      public int describeContents() {
          return 0;
      }
  
      @Override
      public void writeToParcel(Parcel dest, int flags) {
          dest.writeInt(mResult);
          if (mResult == RESULT_SUCCESS) {
              dest.writeInt(mResponseData.length);
              dest.writeByteArray(mResponseData);
          }
      }
  
      public static final @android.annotation.NonNull Parcelable.Creator<TransceiveResult> CREATOR =
              new Parcelable.Creator<TransceiveResult>() {
          @Override
          public TransceiveResult createFromParcel(Parcel in) {
              int result = in.readInt();
              byte[] responseData;
  
              if (result == RESULT_SUCCESS) {
                  int responseLength = in.readInt();
                  responseData = new byte[responseLength];
                  in.readByteArray(responseData);
              } else {
                  responseData = null;
              }
              return new TransceiveResult(result, responseData);
          }
  
          @Override
          public TransceiveResult[] newArray(int size) {
              return new TransceiveResult[size];
          }
      };
  
  }
  