小编Tia*_*ini的帖子

我需要将一些对象序列化为JSON并发送到WebService.我怎么能用org.json库来做呢？或者我将不得不使用另一个？这是我需要序列化的类:

public class PontosUsuario {

    public int idUsuario;
    public String nomeUsuario;
    public String CPF;
    public String email;
    public String sigla;
    public String senha;
    public String instituicao;

    public ArrayList<Ponto> listaDePontos;


    public PontosUsuario()
    {
        //criando a lista
        listaDePontos = new ArrayList<Ponto>();
    }

}

我只放了类的变量和构造函数,但它也有getter和setter.所以如果有人可以帮忙请

我Fragments在我的代码中使用,因为TabActivity已弃用但我在我的代码中收到此错误Logcat:

07-09 09:19:40.936: E/AndroidRuntime(5935): FATAL EXCEPTION: main
07-09 09:19:40.936: E/AndroidRuntime(5935): java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
07-09 09:19:40.936: E/AndroidRuntime(5935):     at android.view.ViewGroup.addViewInner(ViewGroup.java:1976)
07-09 09:19:40.936: E/AndroidRuntime(5935):     at android.view.ViewGroup.addView(ViewGroup.java:1871)
07-09 09:19:40.936: E/AndroidRuntime(5935):     at android.view.ViewGroup.addView(ViewGroup.java:1828)
07-09 09:19:40.936: E/AndroidRuntime(5935):     at android.view.ViewGroup.addView(ViewGroup.java:1808)
07-09 09:19:40.936: E/AndroidRuntime(5935):     at android.support.v4.app.NoSaveStateFrameLayout.wrap(NoSaveStateFrameLayout.java:40)
07-09 09:19:40.936: E/AndroidRuntime(5935):     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:915)
07-09 09:19:40.936: E/AndroidRuntime(5935):     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1088)
07-09 09:19:40.936: E/AndroidRuntime(5935):     at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
07-09 09:19:40.936: E/AndroidRuntime(5935):     at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1444)
07-09 09:19:40.936: …