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我正在使用gottox-socket.io庫進行套接字編程。我爲套接字創建了單例類。我可以調用它的主要活動,但我不能把它叫成另一個活動....這是我的單身類..必須在不同的活動中調用單例socketIO類嗎?
public class MainActivity extends Activity {
EditText uname, passwd;
Button login;
JSONObject json;
SocketIOClient socket;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
socket = new SocketIOClient();
try {
SocketIOClient.initInstance();
} catch (MalformedURLException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
json = new JSONObject();
uname = (EditText) findViewById(R.id.unameED);
passwd = (EditText) findViewById(R.id.passwdED);
login = (Button) findViewById(R.id.loginButton);
login.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
try {
json.put("username", uname.getText().toString().trim());
json.put("password", passwd.getText().toString().trim());
//request send to server
SocketIOClient.emit("login_request", json);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
}
}
而且我已經使用抽象類來獲得JSON reposnse單身課程活動。這裏是我的抽象類
public abstract class ResponseHandler
{
private Context context;
public abstract void execute (JSONObject jsonObject) throws JSONException;
public ResponseHandler (Context ctx)
{
this.context = ctx;
}
public void handleObject(JSONObject jsonObject) throws Exception
{
execute(jsonObject);
}
}