Question

这是包含listview的片段代码。但它没有显示任何东西。此片段与选项卡相关。此选项卡视图包含三个片段，这一个没有显示。为什么？我添加了该片段的代码以及相关的xml和其他类代码。

 def NextDataSet(): 
     for eachDataSet in BigList:
         graphData(eachDataSet)

fragmentmovie：

public class MoviesFragment extends Fragment {

String[] numbers_text = new String[] { "one", "two", "three", "four",
        "five", "six", "seven", "eight", "nine", "ten", "eleven",
        "twelve", "thirteen", "fourteen", "fifteen" };
String[] numbers_digits = new String[] { "1", "2", "3", "4", "5", "6", "7",
        "8", "9", "10", "11", "12", "13", "14", "15" };




@Override
public void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);



}


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



    View view = inflater.inflate(R.layout.fragment_movies, container, false);

    MainCustomList adapter = new MainCustomList(this.getActivity(), numbers_text, numbers_digits);
         ListView list;
         list=(ListView) view.findViewById(R.id.list);
         list.setAdapter(adapter);
         return getView();
}
}

mainlist：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#17df0d"
android:orientation="vertical" >





<ListView
    android:id="@+id/list"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true" >

</ListView>

</RelativeLayout>

maintemp

     public class MainCustomList extends ArrayAdapter<String>{

 private final Activity context;
 private final String[] str1;
 private final String[] str2;
 public MainCustomList(Activity context,String[] str1, String[] str2) {
 super(context, R.layout.maintemp, str1);
 this.context = context;
 this.str1 = str1;
 this.str2 = str2;

      }
 @Override
 public View getView(int position, View view, ViewGroup parent) {
 LayoutInflater inflater = context.getLayoutInflater();
 View rowView= inflater.inflate(R.layout.maintemp, null, true);
 TextView txtTitle = (TextView) rowView.findViewById(R.id.textView1);
 TextView txtTitle2 = (TextView) rowView.findViewById(R.id.textView2);

  txtTitle.setText(str1[position]);
  txtTitle2.setText(str2[position]);

 return rowView;
}}

Answer 1

return getView();错了。片段getView返回onCreateView的结果，null返回onCreateView之前的return getView();。你会回来null。改变

return view;

带

{{1}}

您充气的视图，其中包含您要显示的内容

片段没有显示任何内容

1 个答案: