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问android中存储类数组的动态类值？
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Stack Overflow用户

提问于 2014-02-15 09:06:30

回答 1查看 808关注 0票数 0

我想动态地传递值，在类函数中使用for循环来保存数据，那么如何在java中这样做呢？

当我实现这段代码时，只放一个图像，我想把这个值传递给for循环。

我把我的代码放在这里检查一下

CustomData.java

/** This is just a simple class for holding data that is used to render our custom view */
public class CustomData 
{ 
    private String mText;

    public CustomData(String text) {

        mText = text;
    }
    public String getText() 
    {
        return mText;
    }

}

Activityclass.java

 public class ListMobileActivity extends Activity { 

Button btnradio;
ListView lv;
private ProgressDialog mProgress;

ArrayList<HashMap<String, String>> menulist = new    ArrayList<HashMap<String,String>>();

ArrayList<String> test= new ArrayList<String>();

List<String> custom;
int size=1;
 public CustomData[] mCustomData= new CustomData[size];


 private HorizontalListView myhorizontalview;


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

    myhorizontalview = (HorizontalListView) findViewById(R.id.myhorizontalview);

    new MenuAsynctask().execute("");

    myhorizontalview.setOnItemClickListener(new OnItemClickListener() 
    {

        @Override
        public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,long arg3) 
        {




        }


    });

}



public class MenuAsynctask extends AsyncTask<String, ArrayList<HashMap<String,String>>,ArrayList<HashMap<String,String>>>
{

    @Override
    protected ArrayList<HashMap<String, String>> doInBackground(String... params) 
    {

        try 
        {
                JsonParser jparser = new JsonParser();

                String url="http://www.weboffice.co.at/webservices/services.php?method=content";


                String data=jparser.getdata(url);
                //Log.e("data","--->"+data);

                JSONObject jobject = new JSONObject(data);

                JSONArray jcontent=jobject.getJSONArray("CONTENT");
                size=jcontent.length();
                for(int i=0;i<jcontent.length();i++)
                {

                    String title=jcontent.getJSONObject(i).get("title").toString();
                    String come=jcontent.getJSONObject(i).get("short").toString();
                    String image=jcontent.getJSONObject(i).get("image").toString();

                    mCustomData[i] = new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"); 
                }


        }
        catch (Exception e) 
        {
            e.printStackTrace();
        }

        return menulist;

    }

    @Override
    protected void onPostExecute(ArrayList<HashMap<String, String>> result) 
    {

        Log.e("data","--->"+mCustomData.toString());

        CustomArrayAdapter adapter = new CustomArrayAdapter(ListMobileActivity.this, mCustomData);
        myhorizontalview.setAdapter(adapter);

    }


}

}

i want to create array like this how to achieve this

public CustomData[] mCustomData = new CustomData[] {
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
                new CustomData("http://www.allindiaflorist.com/imgs/arrangemen4.jpg"),
        };

java

android

回答 1

Stack Overflow用户

回答已采纳

发布于 2014-02-15 09:10:41

使用

CustomData mCustomData= new CustomData(image);

若要初始化，则应将其存储在ArrayList中，以便以后访问数据。

更新

CustomData[] dataList = new CustomData[SIZE]; 

for(int i = 0; i < SIZE; i++)
{
    dataList[i] = new CustomData(image); 
}

如果您没有固定的大小，那么使用

ArrayList<CustomData> dataList = new ArrayList<CustomData>();
dataList.add(new CustomData(image));

and to retrieve use

dataList.get(position);

试一试

 public CustomData[] mCustomData; // Remove initialization

在MenuAsynctask doInBackground内部

mCustomData = new CustomData[jcontent.length()];

看起来不错

票数 3

页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持

原文链接：

https://stackoverflow.com/questions/21795520

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