通过意图传递活动之间的JSON数组

问题描述

这已经被问过一次，但没有工作对我来说都没有。所以我想我就再问。

This has been asked once before but that didn't work for me at all. So I thought I'll just ask again.

我有一个JSONarray，我想用一个意图传递给我的第二个活动。

I have a JSONarray that I want to pass to my second activity using an intent.

这是我的code，连接到MySQL数据库，并把它用到一个JSONarray用户数据的一部分。这一切工作至今。

This is a part of my code which connects to a mysql database and puts data about a user in a JSONarray. This all works so far.

try{
    BufferedReader reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8);
    sb = new StringBuilder();
    sb.append(reader.readLine() + "\n");

    String line="0";
    while ((line = reader.readLine()) != null) {
        sb.append(line + "\n");
    }
    is.close();
    result=sb.toString();

    }catch(Exception e){
        Log.e("log_tag", "Error converting result "+e.toString());
    }

String ct_user;
String ct_pass;

Intent personal = new Intent(Home.this, Loggedin.class);

try{
    jArray = new JSONArray(result);
    JSONObject json_data=null;
    json_data = jArray.getJSONObject(0);
    ct_user = json_data.getString("user");
    ct_pass = json_data.getString("pass");


    if (passwordstring.equals(ct_pass)){

        Bundle b = new Bundle();
        b.putString("userdata",json_data.toString());
        personal.putExtras(b);

        startActivity(personal);
            }
    }

我想通过一个意图送我的完整JSONarray我的第二个活动（的loggedIn）。所以，我可以显示例如ct_email = json_data.getString（电子邮件）;这是与第一活动获取从MySQL阵列中的另一个值。

I'd like to send my complete JSONarray through an intent to my second activity (Loggedin). So that I can display for example ct_email = json_data.getString("email"); which is another value in the array that the first activity gets from mysql.

这是有关这一议题的其他问题：passing jsonarray从1活动到另一个

This was the other question about this subject:passing jsonarray from 1 activity to another

这是解决方案并不适合我，因为在第二个活动错误的工作不停地说这无法转换捆的意图，我什么都试过了我能想到的。

That solution didn't work for me because in the second activity errors kept saying it couldn't convert bundle to intent, I tried everything I could think of.

Intent b = getIntent().getExtras();
String userdata=b.getString("userdata");

感谢

修改

感谢您的快速答复家伙。我是新来的StackOverflow所以请原谅我的错误就code标志等我尝试做这一切正常。

Thanks for the quick answers guys. I'm new to Stackoverflow so pardon my mistakes regarding code markings etc. I try to do it all properly.

但它仍然不是为我工作。这是我的第二个活动的一部分：

But it's still not working for me. This is part of my second activity:

public class Loggedin extends Activity {


@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.loggedin);

    myfunction();

}

public void myfunction(){

    Bundle b = getIntent().getExtras();
    String userdataArray = b.getString("userdata");

    String ct_email;
    ct_email = userdataArray.getString("email");


}

}

该错误是方法的getString（串）是没有定义字符串类型。我必须做一些愚蠢的。

The error is the "method getString(String) is undefined for the type String".I must be doing something stupid.

推荐答案

getExtras（）返回包，而不是意图。改变你的code这样和尝试。

getExtras() returns Bundle, not Intent. Change your code like this and try.

Bundle b = getIntent().getExtras();
String userdata=b.getString("userdata");

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