Android在运行时将数据加载到表格布局

Question

在我的Android应用程序中，我必须显示从表布局中的db获取的数据。我得到的数据，当我加入TableRaws到表它提供了一个空指针。我正确实例在表中的元素，我无法弄清楚错误。我的代码片段如下....

TableLayout tbl=(TableLayout) findViewById(R.id.dpl_tbl_lst); 

     if(!retailersList.isEmpty()){ 

      //TableRow Hedding=(TableRow) findViewById(R.id.dpl_tbl_hdr); 
      //tbl.addView(Hedding); 

      for(int i=0;i<retailersList.size();i++){ 

       Retailer RtlIns=retailersList.get(i); 


       TableRow tbl_rw=(TableRow) findViewById(R.id.dpl_tbr_cnt); 

       TextView sequence, custommerName, city, status; 
       sequence=(TextView) findViewById(R.id.dpl_txt_seq); 
       custommerName=(TextView) findViewById(R.id.dpl_txt_cus_nm); 
       city=(TextView) findViewById(R.id.dpl_txt_cty); 
       status=(TextView) findViewById(R.id.dpl_txt_sts); 

       sequence.setText(RtlIns.getPosition()); 
       custommerName.setText(RtlIns.getName()); 
       city.setText(RtlIns.getCity()); 
       status.setText(RtlIns.getStatus()); 

       tbl_rw.addView(sequence); 
       tbl_rw.addView(custommerName); 
       tbl_rw.addView(city); 
       tbl_rw.addView(status); 


       tbl.addView(tbl_rw);} 

而我的表布局是如下.....

<TableLayout 
      android:id="@+id/dpl_tbl_lst" 
      android:layout_width="match_parent" 
      android:layout_height="match_parent" > 

      <TableRow 
       android:id="@+id/dpl_tbl_hdr" 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" > 

       <TextView 
        android:id="@+id/textview3" 
        android:layout_width="@dimen/cell_width_0" 
        android:layout_height="@dimen/cell_h_h" 
        android:background="@drawable/cell_shape" 
        android:padding="@dimen/cell_pdn" 
        android:text="@string/list_sequense" 
        android:textColor="@color/white" 
        android:textSize="@dimen/normal_text" 
        android:textStyle="bold" /> 

       <TextView 
        android:layout_width="@dimen/cell_width_2" 
        android:layout_height="@dimen/cell_h_h" 
        android:background="@drawable/cell_shape" 
        android:padding="@dimen/cell_pdn" 
        android:text="@string/list_cust_name" 
        android:textColor="@color/white" 
        android:textSize="@dimen/normal_text" 
        android:textStyle="bold" /> 

       <TextView 
        android:layout_width="@dimen/cell_width_2" 
        android:layout_height="@dimen/cell_h_h" 
        android:background="@drawable/cell_shape" 
        android:padding="@dimen/cell_pdn" 
        android:text="@string/list_city" 
        android:textColor="@color/white" 
        android:textSize="@dimen/normal_text" 
        android:textStyle="bold" /> 

       <TextView 
        android:layout_width="@dimen/cell_width_1" 
        android:layout_height="@dimen/cell_h_h" 
        android:background="@drawable/cell_shape" 
        android:padding="@dimen/cell_pdn" 
        android:text="@string/list_status" 
        android:textColor="@color/white" 
        android:textSize="@dimen/normal_text" 
        android:textStyle="bold" /> 
      </TableRow> 


     </TableLayout> 

有人可以帮助我在这件事情。

Answer 1

// try this way i gave simple demo but you have use your data rather my static data.. 
1. **table.xml** 
<?xml version="1.0" encoding="utf-8"?> 
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@+id/dpl_tbl_lst" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent"> 
</TableLayout> 
2.**table_row.xml** 
<?xml version="1.0" encoding="utf-8"?> 
<TableRow xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@+id/dpl_tbl_hdr" 
    android:layout_width="match_parent" 
    android:orientation="horizontal" 
    android:layout_height="wrap_content"> 

    <TextView 
     android:id="@+id/dpl_txt_seq" 
     android:layout_width="0dp" 
     android:layout_weight="1" 
     android:gravity="center" 
     android:layout_height="wrap_content" 
     android:text="asd"/> 

    <TextView 
     android:id="@+id/dpl_txt_cus_nm" 
     android:layout_width="0dp" 
     android:layout_weight="1" 
     android:gravity="center" 
     android:layout_height="wrap_content" 
     android:text="asd"/> 

    <TextView 
     android:id="@+id/dpl_txt_cty" 
     android:layout_width="0dp" 
     android:layout_weight="1" 
     android:gravity="center" 
     android:layout_height="wrap_content" 
     android:text="asd"/> 

    <TextView 
     android:id="@+id/dpl_txt_sts" 
     android:layout_width="0dp" 
     android:layout_weight="1" 
     android:gravity="center" 
     android:layout_height="wrap_content" 
     android:text="asd"/> 
</TableRow> 

3. **MyActivity.java** 
public class MyActivity extends Activity { 
    TableLayout dpl_tbl_lst; 
    @Override 
    protected void onCreate(Bundle savedInstanceState){ 

     super.onCreate(savedInstanceState); 
     setContentView(R.layout.table); 
     dpl_tbl_lst = (TableLayout) findViewById(R.id.dpl_tbl_lst); 

     for (int i=0;i<5;i++){ 
      View row = LayoutInflater.from(this).inflate(R.layout.table_row,null,false); 

      TextView dpl_txt_seq = (TextView) row.findViewById(R.id.dpl_txt_seq); 
      TextView dpl_txt_cus_nm = (TextView) row.findViewById(R.id.dpl_txt_cus_nm); 
      TextView dpl_txt_cty = (TextView) row.findViewById(R.id.dpl_txt_cty); 
      TextView dpl_txt_sts = (TextView) row.findViewById(R.id.dpl_txt_sts); 

      dpl_txt_seq.setText("Seq"+String.valueOf(i+1)); 
      dpl_txt_cus_nm.setText("Nm"+String.valueOf(i+1)); 
      dpl_txt_cty.setText("City"+String.valueOf(i+1)); 
      dpl_txt_sts.setText("Sts"+String.valueOf(i+1)); 

      dpl_txt_seq.setTag("Seq"+String.valueOf(i+1)); 
      dpl_txt_seq.setOnClickListener(new View.OnClickListener() { 
       @Override 
       public void onClick(View view) { 
        String data = view.getTag().toString(); 
        Toast.makeText(MyActivity.this,data,Toast.LENGTH_SHORT).show(); 

       } 
      }); 
      dpl_txt_cus_nm.setTag("Nm"+String.valueOf(i+1)); 
      dpl_txt_cus_nm.setOnClickListener(new View.OnClickListener() { 
       @Override 
       public void onClick(View view) { 
        String data = view.getTag().toString(); 
        Toast.makeText(MyActivity.this,data,Toast.LENGTH_SHORT).show(); 

       } 
      }); 
      dpl_txt_cty.setTag("City"+String.valueOf(i+1)); 
      dpl_txt_cty.setOnClickListener(new View.OnClickListener() { 
       @Override 
       public void onClick(View view) { 
        String data = view.getTag().toString(); 
        Toast.makeText(MyActivity.this,data,Toast.LENGTH_SHORT).show(); 

       } 
      }); 
      dpl_txt_sts.setTag("Sts"+String.valueOf(i+1)); 
      dpl_txt_sts.setOnClickListener(new View.OnClickListener() { 
       @Override 
       public void onClick(View view) { 
        String data = view.getTag().toString(); 
        Toast.makeText(MyActivity.this,data,Toast.LENGTH_SHORT).show(); 

       } 
      }); 
      dpl_tbl_lst.addView(row); 
     } 
    } 

}