Question

这是适配器类无法正常工作。即使我将List中的5个值作为参数传递，它总是向我显示3行。任何人都可以告诉我适配器类中的问题在哪里。任何帮助将不胜感激。感谢：）

        import java.util.ArrayList;
        import java.util.List;

        import com.example.mis.R;

        import com.mis.adapter.Chk_Model;
        import com.mis.database.DatabaseHandler;

        import android.content.Context;
        import android.database.Cursor;
        import android.view.LayoutInflater;
        import android.view.View;
        import android.view.ViewGroup;
        import android.widget.ArrayAdapter;
        import android.widget.CheckBox;
        import android.widget.TextView;

        public class ThreeTextViewAdapter extends ArrayAdapter<String> {
        Context context;
        List<String> orderNum=new ArrayList<String>();
        TextView txtOrd1,txtShip1,txtStatus;
        DatabaseHandler handler;

            public ThreeTextViewAdapter(Context context, List<String> ordNo) {
                // TODO Auto-generated constructor stub
                super(context, R.layout.threetextview,ordNo);
                this.context=context;
                this.orderNum=ordNo;
                handler=new DatabaseHandler(context);
            }

            @Override
            public View getView(int position, View convertView, ViewGroup parent) {
                ViewHolder viewHolder=null;
                final int pos = position;
                if (convertView == null) {
                    viewHolder=new ViewHolder();
                    convertView = LayoutInflater.from(getContext()).inflate(
                            R.layout.threetextview, parent, false);
                    viewHolder.txtOrd1=(TextView)convertView.findViewById(R.id.txtfirst_detail_expo);
                    viewHolder.txtShip1=(TextView)convertView.findViewById(R.id.txtsec_detail_expo);
                    viewHolder.txtStatus=(TextView)convertView.findViewById(R.id.txtthird_detail_expo);
                    convertView.setTag(viewHolder);

                }
                else {
                     viewHolder = (ViewHolder) convertView
                            .getTag();

                }

                viewHolder.txtOrd1.setText(orderNum.get(pos));

                handler.getReadableDatabase();
                Cursor cursor=handler.getShipNo(orderNum.get(pos));
                handler.closeDatabase();

                String shipNo=cursor.getString(0);
                if(shipNo.equals(null))
                {
                    viewHolder.txtShip1.setText("Not Exported");    
                    viewHolder.txtStatus.setText("Failed");

                }
                else
                {
                viewHolder.txtShip1.setText(shipNo);
                System.out.println("y"+shipNo);

                viewHolder.txtStatus.setText("Passed");

                System.out.println("z"+"Passed");
                }
                return convertView;
            }
            private static class ViewHolder
            {
                TextView txtOrd1,txtShip1,txtStatus;
            }

        }

在这里，我已将我的代码附加到我正在初始化我的适配器的地方。我已将Set转换为列表。

   Set<String> keySet = ordShipNo.keySet();
    Iterator it = keySet.iterator();
    while (it.hasNext()) {
        String key = (String) it.next();
        ordExported.add(ordShipNo.get(key));

    }

    adapter = new ThreeTextViewAdapter(this, ordExported);
    lststatus.setAdapter(adapter);
    adapter.notifyDataSetChanged();

这是我的Xml布局文件。

<?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="@drawable/blue_2"
    android:orientation="vertical" >

    <HorizontalScrollView
        android:id="@+id/scroll_full_mpr"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >

        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="189dp"
            android:orientation="vertical" >

            <LinearLayout
                android:id="@+id/lay_fullTitle_mpr_mpr"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:background="#267ad4"
                android:orientation="horizontal"
                android:padding="5dp" >

                <TextView
                    android:id="@+id/txt_OrderLstOrdNo_mpr"
                    android:layout_width="230dp"
                    android:layout_height="wrap_content"
                    android:text="@string/pn"
                    android:textAppearance="?android:attr/textAppearanceSmall"
                    android:textStyle="bold" />

                <TextView
                    android:id="@+id/txt_ShipNo_mpr"
                    android:layout_width="300dp"
                    android:layout_height="wrap_content"
                    android:gravity="center|left"
                    android:text="@string/receipt_no"
                    android:textAppearance="?android:attr/textAppearanceSmall"
                    android:textStyle="bold" />

                <TextView
                    android:id="@+id/txt_status_mpr"
                    android:layout_width="50dp"
                    android:layout_height="wrap_content"
                    android:gravity="center|left"
                    android:text="@string/st"
                    android:textAppearance="?android:attr/textAppearanceSmall"
                    android:textStyle="bold" />
            </LinearLayout>

            <ListView
                android:id="@+id/lst_msefullresult_mpr"
                android:layout_width="fill_parent"
                android:layout_height="400dp" >
            </ListView>
        </LinearLayout>
    </HorizontalScrollView>

    <Button
        android:id="@+id/btn_mseOkResult_mpr"
        android:layout_width="fill_parent"
        android:layout_height="45dp"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:text="@string/ok" />

</RelativeLayout>

这是3个textviews的自定义布局。

<?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:orientation="horizontal"
    android:layout_marginTop="175dp"
    >

    <TextView
        android:id="@+id/txtfirst_detail_expo"
        android:layout_width="230dp"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:textSize="20dp"
        android:text="" />

    <TextView
        android:id="@+id/txtsec_detail_expo"
        android:layout_width="300dp"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_toRightOf="@+id/txtfirst_detail_expo"
        android:textSize="20dp"
        android:text="" />

    <TextView
        android:id="@+id/txtthird_detail_expo"
        android:layout_width="50dp"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:textSize="20dp"
        android:text="" />

</RelativeLayout>

Answer 1

正如Jorge所说，overRide你的适配器的getCount就像这样，并返回列表的大小。

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

如果它无法解决问题，那么请将适配器设置为listView的代码给我。

自定义列表视图不会显示我的列表中的所有数据

1 个答案: