获取构造误差ArrayAdapter在Android上ListFragment [英] Getting a constructor error with ArrayAdapter in a ListFragment on Android

问题描述

下面是我的code。我得到的误差构造ArrayAdapter＆LT;字符串＆GT;（MainFragment，INT，字符串[]）未定义上ArraryAdapter

我如何填充是ListView1 与数组项目？

 公共类MainFragment扩展ListFragment {

    的String []项目= {12只猴子，和莎莫的500天，烈火战车};

    @覆盖
    公共无效的onCreate（包savedInstanceState）
    {
        setListAdapter（新ArrayAdapter＆LT;字符串＆GT;（这一点，android.R.layout.simple_list_item_1，项目））;
    }

    @覆盖
    公共查看onCreateView（LayoutInflater充气，容器的ViewGroup，
            捆绑savedInstanceState）{
        // TODO自动生成方法存根
        返回super.onCreateView（充气，容器，savedInstanceState）;
    }
}
 

和这里是我的XML：

 ＆LT; XML版本=1.0编码=UTF-8＆GT？;
＆LT; LinearLayout中的xmlns：机器人=htt​​p://schemas.android.com/apk/res/android
    机器人：layout_width =match_parent
    机器人：layout_height =match_parent
    机器人：方向=垂直＆GT;

    ＆LT;的ListView
        机器人：ID =@ + ID / ListView1的
        机器人：layout_width =match_parent
        机器人：layout_height =WRAP_CONTENT＆GT;
    ＆LT; / ListView控件＆GT;

＆LT; / LinearLayout中＆GT;
 

解决方案

片段不是上下文对象。你需要传递活动对象（Fragment.getActivity（））作为第一个参数来代替。

Here's my code. I'm getting the error The constructor ArrayAdapter<String>(MainFragment, int, String[]) is undefined on ArraryAdapter.

How do I populate the listView1 with the array items?

public class MainFragment extends ListFragment {    

    String[] items = { "12 Monkeys", "(500) Days of Summer", "Chariots of Fire" };

    @Override
    public void onCreate(Bundle savedInstanceState) 
    {
        setListAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, items));
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        return super.onCreateView(inflater, container, savedInstanceState);
    }
}

and here's my XML:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <ListView
        android:id="@+id/listView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >
    </ListView>

</LinearLayout>

解决方案

Fragments are not context objects. You need to pass the Activity object (Fragment.getActivity()) as first argument instead.

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