我遇到了一個我正在處理的Android應用程序的問題。我有兩部通過Wi-Fi連接的手機,我使用ObjectOutputStream
/ObjectInputStream
將一個自定義的序列化類從一部手機傳遞到另一部手機。兩部手機上的課程都是相同的,但是當我嘗試在一部手機上閱讀時,我收到了ClassCastException
。嘗試從ObjectInputStream讀入時Android中的ClassCastException
07-19 08:19:41.636: E/ClientActivity(1775): java.lang.ClassCastException: sMessage
07-19 08:19:41.636: E/ClientActivity(1775): at com.example.nfcclientv2.ClientService.runService(ClientService.java:87)
07-19 08:19:41.636: E/ClientActivity(1775): at com.example.nfcclientv2.ClientService.onStartCommand(ClientService.java:66)
07-19 08:19:41.636: E/ClientActivity(1775): at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2043)
07-19 08:19:41.636: E/ClientActivity(1775): at android.app.ActivityThread.access$2800(ActivityThread.java:117)
07-19 08:19:41.636: E/ClientActivity(1775): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:998)
07-19 08:19:41.636: E/ClientActivity(1775): at android.os.Handler.dispatchMessage(Handler.java:99)
07-19 08:19:41.636: E/ClientActivity(1775): at android.os.Looper.loop(Looper.java:130)
07-19 08:19:41.636: E/ClientActivity(1775): at android.app.ActivityThread.main(ActivityThread.java:3691)
07-19 08:19:41.636: E/ClientActivity(1775): at java.lang.reflect.Method.invokeNative(Native Method)
07-19 08:19:41.636: E/ClientActivity(1775): at java.lang.reflect.Method.invoke(Method.java:507)
07-19 08:19:41.636: E/ClientActivity(1775): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:907)
07-19 08:19:41.636: E/ClientActivity(1775): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:665)
07-19 08:19:41.636: E/ClientActivity(1775): at dalvik.system.NativeStart.main(Native Method)
我的對象和在發生錯誤的行寫着:
sMessage sMsg = (sMessage)ois.readObject();
下面是如何寫出來的sMessage
:
oos = new ObjectOutputStream(client.getOutputStream());
oos.writeObject(sMsg);
oos.flush();
oos.close();
,這裏是我的sMessage
類:
import java.io.Serializable;
public class sMessage implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
public String type = null;
public byte[] data = null;
};
我在這兩部手機上都有這門課,正如我所說的那樣,所以我不太確定爲什麼我要得到ClassCastException
。
如果有任何信息可以幫助,我很樂意發佈它,任何幫助表示讚賞。
對不起,您的課程名稱以小寫字母開頭? – Egor 2012-07-19 13:10:26
這只是駱駝套。沒有真正的原因。 – user969540 2012-07-19 13:52:54