2016-09-24 74 views
1

嗨,大家好我是Android的初学者。我使用udacity教程来倾斜它。在我的第一个项目中,我想构建一个天气应用程序。在一开始我写了一些假数据,我想在屏幕上显示它。但我崩溃了。我不知道为什么android列表视图设置适配器问题

this is mainActivityfragment.java 
public class MainActivityFragment extends Fragment { 
    private ArrayAdapter<String> mForecastAdapter; 
    public MainActivityFragment() { 
    } 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
          Bundle savedInstanceState) { 

     View screen = inflater.inflate(R.layout.fragment_main, container, true); 
     String[] forecastArray ={ 

       "today - sunny - 88/63", 
       "today - sunny - 88/63", 
       "weds - cloudy - 72/63", 
       "thurs - asteroids - 75/65", 
       "fri - heavy rain - 65/56", 
       "sat - sunny - 60/51" 
     }; 

     List<String> weekforecast = new ArrayList<String>(
       Arrays.asList(forecastArray) 
     ); 
     mForecastAdapter = 
       new ArrayAdapter<String>(
         getActivity(), 
         R.layout.list_item_forecast, 
         R.id.list_item_forecast_textview, 
         weekforecast); 



     ListView mylistv =(ListView) screen.findViewById(R.id.listview_forecast); 
     mylistv.setAdapter(mForecastAdapter); 
     return screen; 

    } 

main_fragment.xml:

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:paddingBottom="@dimen/activity_vertical_margin" 
    android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    tools:context="com.example.android.badsaba.MainActivityFragment" 
    tools:showIn="@layout/activity_main"> 

    <ListView 

     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:background="?attr/colorPrimary" 
     android:id = "@+id/listview_forecast" 
     /> 

</FrameLayout> 

list_item_forecast.xml(我用它来放阵列上的TextView的)

<?xml version="1.0" encoding="utf-8"?> 
<textview xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" android:layout_height="match_parent" 
    android:id = "@+id/list_item_forecast_textview" 
    > 

</textview> 
+0

你的堆栈跟踪在哪里? – Zarwan

+0

请包括您的logcat消息,以了解是什么导致崩溃 – Marat

回答

0

我明白这是评论问题: textview必须是TextView而不是textView !!!!