片段GridView第一项尽管设置属性不显示

Question

在滚动视图内创建一个gridview后，视图本身显示为正常，但第一个值根本不显示。我试着看类似的问题，但我仍然不明白出了什么问题。为了解决这个问题需要改变什么？

XML

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    android:paddingBottom="@dimen/activity_vertical_margin"> 

    <TextView 
     android:id="@+id/History_textView0" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:gravity="center" 
     android:textColor="@android:color/white" 
     android:text="Years" 
     style="@android:style/TextAppearance.Medium" /> 
    <com.ages.events.GridViewHistory 
     android:id="@+id/History_GridView0" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:clickable="false" 
     android:columnWidth="100dp" 
     android:numColumns="auto_fit" 
     android:layout_marginBottom="20dp" 
     android:stretchMode="columnWidth" 
     android:layout_below="@+id/History_textView0"/> 

    <TextView 
     android:id="@+id/History_textView1" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:gravity="center" 
     android:textColor="@android:color/white" 
     android:text="Events" 
     style="@android:style/TextAppearance.Medium" 
     android:layout_below="@+id/History_GridView0" /> 
</RelativeLayout> 

的java

public class TabFragmentHistory extends android.support.v4.app.Fragment { 

    static final String[] years = new String[]{ 
     "1863", "1864", "1868", "1871", "1890", "1898", "1900", "1906", "1968", "1979"   
    }; 

    GridView mGridView0; 
    public MyAdapter adapter; 

    public TabFragmentHistory() { 
     // Required empty constructor 
    } 

    @Override 
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { 
     return inflater.inflate(R.layout.tab_fragment_history, container, false); 
    } 

    @Override 
    public void onActivityCreated(@Nullable Bundle savedInstanceState) { 
     View v = getView(); 
     assert v != null; 

     mGridView0 = (GridView) v.findViewById(R.id.HistoryGridView0); 
     adapter = new MyAdapter(getActivity().getApplicationContext(), 0); 
     mGridView0.setAdapter(adapter); 
     for (int i = 1; i < years.length; i++) { 
      adapter.addAdapterItem(new AdapterItem(years[i])); 
     } 

     super.onActivityCreated(savedInstanceState); 
    } 

    public class MyAdapter extends ArrayAdapter<AdapterItem> { 
     private List<AdapterItem> items = new ArrayList<AdapterItem>(); 

     // private static LayoutInflater inflater = null; 
     public MyAdapter(Context context, int textviewid) { 
      super(context, textviewid); 
     } 

     public void addAdapterItem(AdapterItem item) { 
      items.add(item); 
     } 

     @Override 
     public int getCount() { 
      return items.size(); 
     } 

     @Override 
     public AdapterItem getItem(int position) { 
      return ((null != items) ? items.get(position) : null); 
     } 

     @Override 
     public long getItemId(int position) { 
      return position; 
     } 

     @SuppressWarnings("deprecation") 
     @Override 
     public View getView(final int position, View convertView, 
          final ViewGroup parent) { 
      View rowView; 
      if (convertView == null) { 
       rowView = getActivity().getLayoutInflater().inflate(R.layout.gridview_item, parent, false); 
      } else { 
       rowView = convertView; 
      } 
      TextView tv = (TextView) rowView.findViewById(R.id.item_gridview); 
      tv.setText(items.get(position).first); 

      return rowView; 
     } 
    } 

    public class AdapterItem { 
     public String first; 

     // add more items 
     public AdapterItem(String first) { 
      this.first = first; 

     } 
    } 
} 

Answer 1

for (int i = 1; i < years.length; i++) { 
    adapter.addAdapterItem(new AdapterItem(years[i])); 
} 

如果有这样的起始于I = 0？