Google play 游戏服务 : 保存游戏，创建新快照答案

【问题标题】：Google play games services : Saved games, creating a new snapshotGoogle play 游戏服务 : 保存游戏，创建新快照
【发布时间】：2019-11-19 05:05:21
【问题描述】：

我正在关注如何在我的游戏中设置保存的游戏的 google 开发者指南，当我到达您创建快照以存储数据的部分时，该指南没有指定要做什么。

我还检查了此处提供的示例代码 https://github.com/gguuss/android-basic-samples/tree/master/BasicSamples/CollectAllTheStars2

但是使用的一些方法被标记为已弃用，并且从 5 年前开始就没有更新代码

private String mCurrentSaveName = "snapshotTemp";

/**
 * This callback will be triggered after you call startActivityForResult from the
 * showSavedGamesUI method.
 */
@Override
protected void onActivityResult(int requestCode, int resultCode,
                                Intent intent) {
  if (intent != null) {
    if (intent.hasExtra(SnapshotsClient.EXTRA_SNAPSHOT_METADATA)) {
      // Load a snapshot.
      SnapshotMetadata snapshotMetadata =
          intent.getParcelableExtra(SnapshotsClient.EXTRA_SNAPSHOT_METADATA);
      mCurrentSaveName = snapshotMetadata.getUniqueName();

      // Load the game data from the Snapshot
      // ...
    } else if (intent.hasExtra(SnapshotsClient.EXTRA_SNAPSHOT_NEW)) {
      // Create a new snapshot named with a unique string
      String unique = new BigInteger(281, new Random()).toString(13);
      mCurrentSaveName = "snapshotTemp-" + unique;

      // Create the new snapshot
      // ...
    }
  }
}

谁能帮助我？以及在//create the new snapshot comment附近做什么？

【问题讨论】：

标签： android google-play-services google-play-games

【解决方案1】：

经过大量研究，我发现了如何操作，在您执行此操作之前，您的播放器必须先登录

//the data you want to save must be in bytes
byte[] bytearray;
//name of the snapshot
private String currentSave="snapshot"+1235;

private void executeSaving(){

    // get the snapshoClient
    SnapshotsClient snapshotsClient= Games.getSnapshotsClient(this,account);

    // to save a game
    snapshotsClient.open(currentSave,true).addOnCompleteListener(task -> {

        Snapshot snapshot =task.getResult().getData();

        if (snapshot != null){
            //call of the method writeSnapshot params : the snapshot and the data we 
            //want to save with a description
            writeSnapshot(snapshot,bytearray,"first description").addOnCompleteListener(task1 -> {

                if(task1.isSuccessful()){
                    Toast.makeText(getApplicationContext(),"Succesful",Toast.LENGTH_SHORT).show();
                }else {
                    Log.e("ERR",""+task1.getException());
                }
            });
        }
    });
}

private Task<SnapshotMetadata> writeSnapshot(Snapshot snapshot ,byte[] bytearray,String desc){

    //write your data in the snapshot
    snapshot.getSnapshotContents().writeBytes(bytearray);

    SnapshotMetadataChange snapshotMetadata = new SnapshotMetadataChange.Builder().setDescription(desc).build();

    SnapshotsClient snapshotsClient=Games.getSnapshotsClient(this,account);

    //commit and close to send the new changes to google play games services
    return snapshotsClient.commitAndClose(snapshot,snapshotMetadata);
}

【讨论】：