Android的 - 通过蓝牙传递对象 [英] Android - Pass object via bluetooth

问题描述

蓝牙聊天的例子为Android是非常有用的，学习如何通过手机之间的字符串 - 是否有可能使用相同的code通过电话之间的对象？我在这两款手机中定义相同的类，我只是想从一个电话中传递一个类的实例到另一个。有什么样code可用？我尝试使用序列化和更换的OutputStream和InputStream中与ObjectOutputStream中和ObjectInputStream的聊天的例子，但它似乎没有工作

The Bluetooth chat example for Android is very useful to learn how to pass strings between phones - is it possible to use the same code to pass objects between phones? I have the same classes defined in both phones, I just want to pass the instance of one class from one phone to another. Is there any sample code available? I tried using serialization and replacing outputstream and inputstream in the chat example with objectoutputstream and objectinputstream but it didn't seem to work

推荐答案

我发现来处理，这是下面的最佳方式：

The best way I found to handle this was the following:

1. 在我建立了我的对象为实现Serializable，我想送。

2. 我设置了​​以下code管理消息：

1. I set up my objects as implementing Serializable that I wanted to send.

2. I set up the following code to manage the messages:

public byte[] serialize() throws IOException {
    ByteArrayOutputStream b = new ByteArrayOutputStream();
    ObjectOutputStream o = new ObjectOutputStream(b);
    o.writeObject(this);
    return b.toByteArray();
}
//AbstractMessage was actually the message type I used, but feel free to choose your own type
public static AbstractMessage deserialize(byte[] bytes) throws IOException, ClassNotFoundException {
    ByteArrayInputStream b = new ByteArrayInputStream(bytes);
    ObjectInputStream o = new ObjectInputStream(b);
    return (AbstractMessage) o.readObject();

我改了写语句接受一个序列化，然后再作出最后的写：

I changed the write statements to accept a Serializable, and then make the final write:

/**
 * Write to the connected OutStream.
 * @param buffer  The bytes to write
 */
public void write(AbstractMessage buffer) {
    try {
        Log.v(TAG,"Writing \""+(buffer.serialize())+"\"");
        mmOutStream.write(buffer.serialize());

        // Share the sent message back to the UI Activity
        mHandler.obtainMessage(AbstractMessageManager.MESSAGE_WRITE, -1, -1, buffer)
                .sendToTarget();
    } catch (IOException e) {
        Log.e(TAG, "Exception during write", e);
    }
}

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