Wie Kind-Click-Ereignis in Expandable Listview in Android behandeln?

Question

Ich erstelle erweiterbare Listenansicht in Android. Ich habe drei Textansichten im relativen Layout hinzugefügt und zwei Schaltflächen im horizontalen linearen Layout bedeutet, dass diese zwei Schaltflächen in einer Zeile hinzugefügt werden. Wie kann ich also auf diese beiden Schaltflächen klicken?

Und ich möchte eine andere Aktivität auf Knopf klicken in der erweiterbaren Listenansicht aufrufen. Aber ich habe keine Idee gefunden, wie man auf Kind in ExpandableListView klickt.

Hier ist meine XML-Datei.

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:background="@android:color/white" 
    android:padding="2dp" > 

    <TextView 
     android:id="@+id/TextView_Projectdetails" 
     android:layout_width="match_parent" 
     android:layout_height="25dp" 
     android:background="@drawable/button_shape" 
     android:paddingLeft="10sp" 
     android:textColor="@android:color/black" /> 

    <TextView 
     android:id="@+id/textOne" 
     android:layout_width="match_parent" 
     android:layout_height="25dp" 
     android:layout_below="@+id/TextView_Projectdetails" 
     android:layout_marginTop="2dp" 
     android:background="@drawable/button_shape" 
     android:paddingLeft="10sp" 
     android:textColor="@android:color/black" > 
    </TextView> 

    <TextView 
     android:id="@+id/textTwo" 
     android:layout_width="match_parent" 
     android:layout_height="25dp" 
     android:layout_below="@+id/textOne" 
     android:layout_marginTop="2dp" 
     android:background="@drawable/button_shape" 
     android:paddingLeft="10sp" 
     android:textColor="@android:color/black" > 
    </TextView> 

    <LinearLayout 
     android:id="@+id/linearlAYOUT" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:layout_below="@+id/textTwo" 
     android:layout_marginTop="5dp" 
     android:orientation="horizontal" > 

     <Button 
      android:id="@+id/button_EditedTask" 
      android:layout_width="0dp" 
      android:layout_height="27dp" 
      android:layout_gravity="center" 
      android:layout_weight="1" 
      android:background="@drawable/button_shape_two" 
      android:gravity="center" 
      android:paddingBottom="3sp" 
      android:paddingTop="3sp" 
      android:text="ASSIGN TASK" 
      android:focusable="false"  
      android:textColor="@android:color/white" 
      android:textSize="12sp" 
      android:textStyle="normal" /> 

     <Button 
      android:id="@+id/buttonViewTask" 
      android:layout_width="0dp" 
      android:layout_height="27dp" 
      android:layout_gravity="center_vertical|center_horizontal" 
      android:layout_marginLeft="3dp" 
      android:layout_weight="1" 
      android:background="@drawable/button_shape_one" 
      android:gravity="center" 
      android:paddingBottom="3sp" 
      android:paddingTop="3sp" 
      android:text="VIEW TASK" 
      android:focusable="false"  
      android:textColor="@android:color/white" 
      android:textSize="12sp" 
      android:textStyle="normal" /> 
    </LinearLayout> 

</RelativeLayout> 

List_Group XML-Datei -

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:orientation="vertical" 
    android:padding="8dp" 
    android:background="#000000"> 


    <TextView 
     android:id="@+id/lblListHeader" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:paddingLeft="?android:attr/expandableListPreferredItemPaddingLeft" 
     android:textSize="17dp" 
     android:textColor="#f9f93d" /> 

</LinearLayout> 

hier ist meine ExpandableListAdapter Klasse -

public class ExpandableListAdapter extends BaseExpandableListAdapter { 

    private Context _context; 
    private List<String> _listDataHeader; // header titles 
    // child data in format of header title, child title 
    private HashMap<String, List<String>> _listDataChild; 
    Context context; 

    public ExpandableListAdapter(Context context, List<String> listDataHeader, 
      HashMap<String, List<String>> listChildData) { 
     this._context = context; 
     this._listDataHeader = listDataHeader; 
     this._listDataChild = listChildData; 
    } 

    public ExpandableListAdapter 
    (My_Project my_Project, List createGroupList, 
      int listGroup, String[] strings, int[] is, List createChildList, 
      int childItem, String[] strings2, int[] is2) 
    { 
     // TODO Auto-generated constructor stub 
    } 

    @Override 
    public Object getChild(int groupPosition, int childPosition) 
    { 
     //this.get(groupPosition).getChildren().get(childPosition); 
     String strchildPosition = this._listDataChild.get(this._listDataHeader.get(groupPosition)).get(childPosition); 
     System.out.println("Child Position =" + strchildPosition); 
     return this._listDataChild.get(this._listDataHeader.get(groupPosition)) 
       .get(childPosition); 
    } 

    @Override 
    public long getChildId(int groupPosition, int childPosition) { 
     return childPosition; 
    } 

    @Override 
    public View getChildView(int groupPosition, final int childPosition, 
      boolean isLastChild, View convertView, ViewGroup parent) { 

     final String childText = (String) getChild(groupPosition, childPosition); 

     if (convertView == null) { 
      LayoutInflater infalInflater = (LayoutInflater) this._context 
        .getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
      convertView = infalInflater.inflate(R.layout.child_item, null); 
     } 

     TextView txtListChild = (TextView) convertView.findViewById(R.id.TextView_Projectdetails); 
     TextView txtOneListChild = (TextView)convertView.findViewById(R.id.textOne); 
     TextView txtTwoListChild = (TextView)convertView.findViewById(R.id.textTwo); 



     txtListChild.setText(childText); 
     txtOneListChild.setText(childText); 
     txtTwoListChild.setText(childText); 




     Button btnAssgnTask = (Button)convertView.findViewById(R.id.button_EditedTask); 
     btnAssgnTask.setOnClickListener(new OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       //Intent i=new Intent(context,Assign_Task.class); 
       //StartElementListener() 

      } 
     }); 


     Button btnViewTask = (Button)convertView.findViewById(R.id.buttonViewTask); 

     return convertView; 
    } 

    @Override 
    public int getChildrenCount(int groupPosition) { 
     return this._listDataChild.get(this._listDataHeader.get(groupPosition)) 
       .size(); 
    } 

    @Override 
    public Object getGroup(int groupPosition) { 
     return this._listDataHeader.get(groupPosition); 
    } 

    @Override 
    public int getGroupCount() { 
     return this._listDataHeader.size(); 
    } 

    @Override 
    public long getGroupId(int groupPosition) { 
     return groupPosition; 
    } 

    @Override 
    public View getGroupView(int groupPosition, boolean isExpanded, 
      View convertView, ViewGroup parent) { 
     String headerTitle = (String) getGroup(groupPosition); 
     if (convertView == null) { 
      LayoutInflater infalInflater = (LayoutInflater) this._context 
        .getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
      convertView = infalInflater.inflate(R.layout.list_group, null); 
     } 

     TextView lblListHeader = (TextView) convertView 
       .findViewById(R.id.lblListHeader); 
     lblListHeader.setTypeface(null, Typeface.BOLD); 
     lblListHeader.setText(headerTitle); 

     return convertView; 
    } 

    @Override 
    public boolean hasStableIds() { 
     return false; 
    } 

    @Override 
    public boolean isChildSelectable(int groupPosition, int childPosition) { 
     return true; 
    } 

} 

Hier meine Aktivität Code ist -

public class My_Project extends ExpandableListActivity 
{ 


    expListView = (ExpandableListView) findViewById(android.R.id.list); 

     expListView.setOnGroupClickListener(new OnGroupClickListener() 
     { 
      @Override 
       public boolean onGroupClick(ExpandableListView parent, View v, 
         int groupPosition, long id) 
       { 
        return false; 
       } 
      }); 


      expListView.setOnGroupExpandListener(new OnGroupExpandListener() { 

       @Override 
       public void onGroupExpand(int groupPosition) { 
        Toast.makeText(getApplicationContext(), 
          dtrProjectNAmeSize.length + " Expanded", 
          Toast.LENGTH_SHORT).show(); 
       } 
      }); 


      expListView.setOnGroupCollapseListener(new OnGroupCollapseListener() { 

       @Override 
       public void onGroupCollapse(int groupPosition) { 
        Toast.makeText(getApplicationContext(), 
          dtrProjectNAmeSize.length + " Collapsed", 
          Toast.LENGTH_SHORT).show(); 
       } 
      }); 


      expListView.setOnChildClickListener(new OnChildClickListener() { 

       @Override 
       public boolean onChildClick(ExpandableListView parent, View v, 
         int groupPosition, int childPosition, long id) { 
        // TODO Auto-generated method stub 

        int cp = (int) mAdapter.getChildId(groupPosition, childPosition); 
        if(cp == 3) 
        { 
         switch (cp) 
         { 
           case 3: 



           break; 

         } 
        } 


        return false; 

       } 
      }); 



      mAdapter = new SimpleExpandableListAdapter(
         this, 
         groupData, 
         R.layout.list_group, 
         new String[] { Project_Name }, 
         new int[] {R.id.lblListHeader }, 
         childData, 
         R.layout.child_item, 
         new String[] { Project_Date_Created , Project_End_Date , Project_Is_Active}, 
         new int[] { R.id.TextView_Projectdetails , R.id.textOne , R.id.textTwo } 
         ); 

       expListView.setAdapter(mAdapter); 

    } 



    } 

Answer 1

Sie setOnChildClickListener von chi einstellen d der erweiterbaren Listenansicht können Sie dann zu der anderen Aktivität gemäß dem Wert der Array-Liste wechseln, die für die Erstellung erweiterbarer Listenansichten verwendet wird.

  menuExpandableListView 
        .setOnChildClickListener(new ExpandableListView.OnChildClickListener() { 

         @Override 
         public boolean onChildClick(
           ExpandableListView parent, View v, 
           int groupPosition, int childPosition, 
           long id) { 
          GoCategory(mainMenusList.get(groupPosition) 
            .getPagesList().get(childPosition)); 
          return false; 
         } 
        }); 

Oder Sie können dies tun

@Override 
public View getChildView(final int groupPosition, final int childPosition, 
     boolean isLastChild, View convertView, ViewGroup parent) { 
    Page page =(Page) getChild(groupPosition, childPosition); 
    convertView = inflater.inflate(R.layout.child_list_layout, null); 
    Button button1=(Button)convertView.findViewById(R.id.button1); 
    button1.setOnClickListener(new OnClickListener() { 

     @Override 
     public void onClick(View v) { 

       Your code here.... 


     } 
    }); 

    return convertView; 
} 

Answer 2

Was Sie hier-

expListView.setOnChildClickListener(new OnChildClickListener() { 

       @Override 
       public boolean onChildClick(ExpandableListView parent, View v, 
         int groupPosition, int childPosition, long id) { 
        // TODO Auto-generated method stub 

        int cp = (int) mAdapter.getChildId(groupPosition, childPosition); 
        if(cp == 3) 
        { 
         switch (cp) 
         { 
           case 3: 



           break; 

         } 
        } 


        return false; 

       } 
      }); 

Dieser Listener verwendet für Kind Artikel Klicken zu tun versuchen, rufen startActivity(intent) in diesem Teil des Codes .