Question

我目前正在使用Serializable Interface。我想将ArrayList从一个活动传递到另一个活动，但它给了我这个错误“无法编组值”，代码是，

//发送活动：

    public class LogIn extends Activity implements OnClickListener
    {
    ProgressDialog pd;
    ImageButton logIn,registr;
    EditText userName,Password;
     public static String usrName,passwrd;
     String TAG=LogIn.class.getName();
    @Override
    protected void onCreate(Bundle savedInstanceState)
    {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.login);
        userName=(EditText)findViewById(R.id.logIn_etuserName);
        Password=(EditText)findViewById(R.id.logIn_etpaswrd);
        logIn=(ImageButton)findViewById(R.id.logIn_B_logIn);
        registr=(ImageButton)findViewById(R.id.logIn_B_registration);       
        logIn.setOnClickListener(this);
        registr.setOnClickListener(this);

    }
    @Override
    public void onClick(View v)
    {

        String respns="";
        switch (v.getId())
        {
        case R.id.logIn_B_logIn:

            try 
            {
                usrName=userName.getText().toString();
                passwrd=Password.getText().toString();
                        if(usrName.contentEquals("") && passwrd.contentEquals(""))
                {
                    Toast.makeText(getApplicationContext(), "Enter       userName",Toast.LENGTH_LONG).show();
                }
      //                        else if(passwrd.contentEquals(""))
    //              {
    //                  Toast.makeText(getApplicationContext(), "Enter      password",Toast.LENGTH_LONG).show();
    //              }
                else
                {
                    pd=ProgressDialog.show(LogIn.this, "LogIn", "Logging");
                    new Athenticate().execute();


                }
            } catch (Exception e) 
            {
                e.printStackTrace();
            }
            break;
        case R.id.logIn_B_registration:
            Intent i=new Intent(LogIn.this,Registration.class);
            startActivity(i);
           break;
           default:
            break;
        }

    }

    private class Athenticate extends AsyncTask<String, Void,ArrayList<SettrGettr> >
    {
        ArrayList<SettrGettr> lst;

    @Override
    protected ArrayList<SettrGettr> doInBackground(String... params) 
    {
        lst=(ArrayList<SettrGettr>)new AllMethods().logInMethod();
        pd.cancel();
        return lst;
    }

    @Override
    protected void onPostExecute(ArrayList<SettrGettr> result) 
    {
        ArrayList<SettrGettr> l=result;
        try {
            if(l.size()>0)
            {
            Intent i=new Intent(LogIn.this,Home.class);
            Bundle b=new Bundle();
            b.putSerializable("shahid",l);
            //i.putExtras(b);
            i.putExtras(b);
            startActivity(i);
            }
            else
            {

            }
        } catch (Exception e) 
        {
        Log.d(TAG, "Errors are ::"+e.getMessage());
        }

    }




}


}

    //Recieving Activity:
        public class Home extends Activity implements Serializable
    {

    ListView lv;
    @Override
    protected void onCreate(Bundle savedInstanceState) 
    {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.home);
        lv=(ListView)findViewById(R.id.home_lv);

        ArrayList<SettrGettr> gtList=(ArrayList<SettrGettr>)getIntent().getSerializableExtra("shahid"); 
        //(ArrayList<SettrGettr>)getIntent().getSerializableExtra("shahid");

        ArrayAdapter<SettrGettr> adp=new ArrayAdapter<SettrGettr>(Home.this,android.R.layout.simple_list_item_1,gtList);
        lv.setAdapter(adp);


    }


}
//setterGettr:

public class SettrGettr {
    int ID;
    String Name = "";
    String FName = "";
    String Class = "";
    String UserName = "";
    String Password = "";
    String DOB = "";
    String MobileNo = "";
    String Relation = "";
    ArrayList<SettrGettr> msttrList;

    public ArrayList<SettrGettr> getMsttrList() {
        return msttrList;
    }

    public void setMsttrList(ArrayList<SettrGettr> msttrList) {
        this.msttrList = msttrList;
    }

    public int getID() {
        return ID;
    }

    public void setID(int iD) {
        ID = iD;
    }

    public String getName() {
        return Name;
    }

    public void setName(String name) {
        Name = name;
    }

    public String getFName() {
        return FName;
    }

    public void setFName(String fName) {
        FName = fName;
    }

    public String getCurrentClass() {
        return Class;
    }

    public void setClass(String class1) {
        Class = class1;
    }

    public String getUserName() {
        return UserName;
    }

    public void setUserName(String userName) {
        UserName = userName;
    }

    public String getPassword() {
        return Password;
    }

    public void setPassword(String password) {
        Password = password;
    }

    public String getDOB() {
        return DOB;
    }

    public void setDOB(String dOB) {
        DOB = dOB;
    }

    public String getMobileNo() {
        return MobileNo;
    }

    public void setMobileNo(String mobileNo) {
        MobileNo = mobileNo;
    }

    public String getRelation() {
        return Relation;
    }

    public void setRelation(String relation) {
        Relation = relation;
    }

    @Override
    public String toString() {

        return "\nRegistration No\t: " + getID() + "\n\nName\t\t\t\t\t\t\t: " + getName() + "\n\nFather Name\t\t\t: " + getFName() + "\n\nClass\t\t\t\t\t\t\t: "
                + getCurrentClass() + "\n\nCity\t\t\t\t\t\t\t\t: Islamabad" + "\n\nAdress\t\t\t\t\t\t: Islamabad";

    }

}

Answer 1

做一件事而不是尝试

public class Home extends Activity implements Serializable

从上方删除implements Serializable

并添加

public class SettrGettr implements Serializable{
int ID;
String Name = "";
String FName = "";
String Class = "";
String UserName = "";
String Password = "";
String DOB = "";
String MobileNo = "";
String Relation = "";
ArrayList<SettrGettr> msttrList;

public ArrayList<SettrGettr> getMsttrList() {
    return msttrList;
}

public void setMsttrList(ArrayList<SettrGettr> msttrList) {
    this.msttrList = msttrList;
}

public int getID() {
    return ID;
}

public void setID(int iD) {
    ID = iD;
}

public String getName() {
    return Name;
}

public void setName(String name) {
    Name = name;
}

public String getFName() {
    return FName;
}

public void setFName(String fName) {
    FName = fName;
}

public String getCurrentClass() {
    return Class;
}

public void setClass(String class1) {
    Class = class1;
}

public String getUserName() {
    return UserName;
}

public void setUserName(String userName) {
    UserName = userName;
}

public String getPassword() {
    return Password;
}

public void setPassword(String password) {
    Password = password;
}

public String getDOB() {
    return DOB;
}

public void setDOB(String dOB) {
    DOB = dOB;
}

public String getMobileNo() {
    return MobileNo;
}

public void setMobileNo(String mobileNo) {
    MobileNo = mobileNo;
}

public String getRelation() {
    return Relation;
}

public void setRelation(String relation) {
    Relation = relation;
}

@Override
public String toString() {

    return "\nRegistration No\t: " + getID() + "\n\nName\t\t\t\t\t\t\t: " + getName() + "\n\nFather Name\t\t\t: " + getFName() + "\n\nClass\t\t\t\t\t\t\t: "
            + getCurrentClass() + "\n\nCity\t\t\t\t\t\t\t\t: Islamabad" + "\n\nAdress\t\t\t\t\t\t: Islamabad";

}

}

<强>解释

当您通过bundle传递可序列化的内容时，您传递的值必须是Implements Serializable interface。

但是你可以从传递值的地方实现Serializable接口。

Android运行时错误：无法编组值

1 个答案: