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
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(我使用它将数组放在textview上)
<?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>
答案 0 :(得分:0)
我很感谢这是一个问题的评论: textview必须是TextView而不是textView !!!!