我怎樣才能通過點擊子列表項目調用父列表項目

Question

我有一個列表視圖，通過點擊列表視圖中的項目，我會得到另一個子列表視圖。我如何可以通過點擊子項獲得父列表視圖中的位置

主要活動：

public boolean onItemLongClick(AdapterView parent, View view, int position, long id) { 
    newListitems2.clear(); 

    newListitems2.addAll(itemsList1); 

    dialog = new Dialog(PendingOrdersActitvity.this); 
    dialog.setContentView(R.layout.itembumping); 
    dialog.show(); 

    listView1.setTag(position); 
    list1 = (ListView) dialog.findViewById(R.id.list1); 

    ItemBumpingAdapter adapter2 = new ItemBumpingAdapter(PendingOrdersActitvity.this, newListitems2); 
    list1.setAdapter(adapter2); 

    Button okButton = (Button) dialog.findViewById(R.id.ok1); 
    okButton.setOnClickListener(new OnClickListener() { 

     @Override 
     public void onClick(View v) { 
      dialog.dismiss(); 
     } 
    }); 
    Button cancelButton = (Button) dialog.findViewById(R.id.Cancel1); 
    cancelButton.setOnClickListener(new OnClickListener() { 

     @Override 
     public void onClick(View v) { 
      // TODO Auto-generated method stub 
      dialog.dismiss(); 
     } 
    }); 
    return false; 
} 

父列表：

public View getView(int position, View convertView, ViewGroup parent) { // TODO Auto-generated method stub 

    ViewHolder holder; 
    String item = null, qty = null; 
    if (convertView == null) { 
     holder = new ViewHolder(); 
     convertView = inflator.inflate(R.layout.itembumpingadapter, null); 
     holder.qty = (TextView) convertView.findViewById(R.id.qty); 
     holder.name = (TextView) convertView.findViewById(R.id.item); 
     holder.childText = (TextView) convertView 
       .findViewById(R.id.childitem); 
     holder.qtyChild = (TextView) convertView 
       .findViewById(R.id.qtychild); 
     holder.checkbox = (CheckBox) convertView.findViewById(R.id.chckbox1); 
     convertView.setTag(holder); 

    } else { 

     holder = (ViewHolder) convertView.getTag(); 
    } 
    parentobjid = newListitems.get(position).getParentobjectid(); 
    if (!parentobjid.isEmpty()) { 
     holder.name.setText(" " + newListitems.get(position).getItemnNameDisplay()); 
     holder.name.setTextColor(Color.parseColor("#CC0000")); 
     holder.qty.setText("  " + String.valueOf(newListitems.get(position) 
       .getQuantityDisplay())); 
     holder.qty.setTextColor(Color.parseColor("#CC0000")); 
    } else { 
     holder.name.setText(newListitems.get(position).getItemnNameDisplay()); 
     holder.qty.setText(String.valueOf(newListitems.get(position).getQuantityDisplay())); 
     holder.name.setTextColor(Color.parseColor("#FFFFFF")); 
    } 

    return convertView; 
} 

兒童ListAdapter：

if (convertView == null) { 

     holder = new ViewHolder(); 
     convertView = inflator.inflate(R.layout.itembumpingadapter, null); 
     holder.qty = (TextView) convertView.findViewById(R.id.qty); 
     holder.name = (TextView) convertView.findViewById(R.id.item); 
     holder.childText = (TextView) convertView 
       .findViewById(R.id.childitem); 
     holder.qtyChild = (TextView) convertView 
       .findViewById(R.id.qtychild); 
     holder.checkbox = (CheckBox) convertView.findViewById(R.id.chckbox1); 
     convertView.setTag(holder); 
    } else { 
     holder = (ViewHolder) convertView.getTag(); 
    } 
    parentobjid = newListitems.get(position).getParentobjectid(); 
    if (!parentobjid.isEmpty()) { 
     holder.name.setText(" " + newListitems.get(position).getItemnNameDisplay()); 
     holder.name.setTextColor(Color.parseColor("#CC0000")); 
     holder.qty.setText(" " + String.valueOf(newListitems.get(position).getQuantityDisplay())); 
     holder.qty.setTextColor(Color.parseColor("#CC0000")); 
    } else { 
     holder.name.setText(newListitems.get(position).getItemnNameDisplay()); 
     holder.qty.setText(String.valueOf(newListitems.get(position).getQuantityDisplay())); 
     holder.name.setTextColor(Color.parseColor("#FFFFFF")); 
     holder.qty.setTextColor(Color.parseColor("#FFFFFF")); 
     holder.checkbox.setChecked(false); 

     holder.checkbox.setTag(position); 
     holder.checkbox.setOnClickListener(new OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       int pos = (Integer) v.getTag();//Cast object to integer 
       newListitems.get(pos).setChecked(!newListitems.get(pos).isChecked()); 
      } 
     }); 
     if (newListitems.get(position).isChecked()) { 
      holder.name.setEnabled(true); 
      holder.name.setBackgroundColor(Color.parseColor("#DCDBDB")); 

     } else { 
      holder.name.setEnabled(false); 
     } 
    } 
    return convertView; 

Answer 1

創建兩個列表對象，如

List<String> list_parent; 
List<String> list_child; 

的父項點擊更新list_child並分配給listview Adapter並設置一個flag針對列表視圖中顯示（如設置flag0如果list_parent分配到適配器和1名兒童）

onBackPressed檢查，如果標誌是1，那麼分配list_parent到適配器，如果標誌爲0，則finish();

但是請記住，當你分配列表對象適配器調用的每次notifyDataSetChanged

這是很簡單的列表視圖代碼：

public class ListViewAndroidExample extends Activity { 
    ListView listView ; 
    int flag=0;//parent 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_list_view_android_example); 

     // Get ListView object from xml 
     listView = (ListView) findViewById(R.id.list); 

     // Defined Array values to show in ListView 
     String[] values_parent = new String[] { "Android List View", 
             "Adapter implementation", 
             "Simple List View In Android", 
             "Create List View Android", 
             "Android Example", 
             "List View Source Code", 
             "List View Array Adapter", 
             "Android Example List View" 
             }; 

     String[] values_child= new String[] { "Child 1", 
       "Child 2", 
       "Child 3", 
       "Child 4" 
      }; 
     ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, 
      android.R.layout.simple_list_item_1, android.R.id.text1, values_parent); 


     // Assign adapter to ListView 
     listView.setAdapter(adapter); 

     // ListView Item Click Listener 
     listView.setOnItemClickListener(new OnItemClickListener() { 

       @Override 
       public void onItemClick(AdapterView<?> parent, View view, 
       int position, long id) { 

       // ListView Clicked item index 
       int itemPosition  = position; 

       if(flag=0) 
       { 
       flag=1; 
       adapter = new ArrayAdapter<String>(this, 
      android.R.layout.simple_list_item_1, android.R.id.text1, values_child); 
       } 
       else 
        { 
       flag=0; 
        } 

       } 

     }); 
    } 



@Override 
public void onBackPressed() { 
    // TODO Auto-generated method stub 
    if(flag=0) 
    finish(); 
    else{ 
    adapter = new ArrayAdapter<String>(this, 
      android.R.layout.simple_list_item_1, android.R.id.text1, values_parent); 
     } 
} 

}