Question

我创建了一个ExpandableList View，其中包含一些组项和相应的子项。

我可以访问子视图，并在groupPosition和childPosition的帮助下访问子视图属性。

现在我必须在每个子视图上放置两个ImageButton，并在点击每个视图时触发不同的Intents。

我尝试编码为每个图片按钮设置onClickListeners并获得相应的结果，但我在返回值中面临困难，其中getChildView只返回一个View 如何获得每个ImageButton点击的响应？

我的代码如下：

public View getChildView (final int groupPosition, final int childPosition, boolean    isLastChild, View convertView, ViewGroup parent)  
{
    final View providbtn = super.getChildView(groupPosition, childPosition, isLastChild, convertView, parent);
    final View lecvidbtn = super.getChildView(groupPosition, childPosition, isLastChild, convertView, parent);
    final ImageButton providbtn1 = (ImageButton)providbtn.findViewById(R.id.provid);
    final ImageButton lecvidbtn1 = (ImageButton)lecvidbtn.findViewById(R.id.lecvid);
    //final View childItemClicked = super.getChildView(groupPosition, childPosition, isLastChild, convertView, parent);
    //final ImageButton ib = (ImageButton)childItemClicked.findViewById(R.id.)
    //ImageButton provid = (ImageButton)findViewById(R.id.provid);
    providbtn1.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
                // TODO Auto-generated method stub
                Toast.makeText(getApplication(), "Topic Proc video is: "+topic[groupPosition]+" and Chapter is "+chapter[groupPosition][childPosition], Toast.LENGTH_LONG).show();
                flag = "p";
                Bundle bundle = new Bundle();
                bundle.putString("topic",topic[groupPosition] );
                bundle.putString("chapter",chapter[groupPosition][childPosition] );
                Intent goHome = new Intent(getApplicationContext(), VideoWeb.class);
                goHome.putExtras(bundle);
                startActivity(goHome);
                }
            });

            lecvidbtn1.setOnClickListener(new View.OnClickListener() {

        public void onClick(View v) {
            // TODO Auto-generated method stub
            Toast.makeText(getApplication(), "Topic Lec video is: "+topic[groupPosition]+" and Chapter is "+chapter[groupPosition][childPosition], Toast.LENGTH_LONG).show();
            flag = "l";
            Bundle bundle = new Bundle();
                bundle.putString("topic",topic[groupPosition] );
                bundle.putString("chapter",chapter[groupPosition][childPosition] );
                Intent goHome = new Intent(getApplicationContext(), VideoWeb.class);
                goHome.putExtras(bundle);
                startActivity(goHome);
                        }
        });


    return lecvidbtn;  //My confusion is here. How to capture the return value for any of the image buttons clicked above.?
}

Answer 1

试试这种方式

  public View getChildView(int groupPosition,int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {
         View v = null;
          if( convertView != null )
              v = convertView;
          else
              v = inflater.inflate(R.layout.child_row, parent, false); 
          String c = (String)getChild( groupPosition, childPosition );
          final int grpPos = groupPosition;
          final int childPos = childPosition;
              ImageButton button1 = (ImageButton)v.findViewById( R.id.imageButton1);
              ImageButton button2 = (ImageButton)v.findViewById( R.id.imageButton2);
       // and set onClickListener to this two button
              button1.setOnClickListener(new OnClickListener(){
                 @Override
                 public void onClick(View v) {
                 // TODO Auto-generated method stub

                  Toast.makeText(getApplication(), "Topic Proc video is: "+topic[groupPosition]+" and Chapter is "+chapter[groupPosition][childPosition], Toast.LENGTH_LONG).show();
                    flag = "p";
                    Bundle bundle = new Bundle();
                    bundle.putString("topic",topic[groupPosition] );
                    bundle.putString("chapter",chapter[groupPosition][childPosition] );
                    Intent goHome = new Intent(getApplicationContext(), VideoWeb.class);
                    goHome.putExtras(bundle);
                    startActivity(goHome);

                 }
              )};
              button2.setOnClickListener(new OnClickListener(){

                   @Override
                   public void onClick(View v) {
               // TODO Auto-generated method stub
                    Toast.makeText(getApplication(), "Topic Lec video is: "+topic[groupPosition]+" and Chapter is "+chapter[groupPosition][childPosition], Toast.LENGTH_LONG).show();
                    flag = "l";
                    Bundle bundle = new Bundle();
                    bundle.putString("topic",topic[groupPosition] );
                    bundle.putString("chapter",chapter[groupPosition][childPosition] );
                    Intent goHome = new Intent(getApplicationContext(), VideoWeb.class);
                    goHome.putExtras(bundle);
                    startActivity(goHome);

                 }
              )};
          return v;

      }

和 child_row.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:background="#ebebeb"
android:layout_height="50dp">
<ImageButton
    android:id="@+id/imageButton1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:layout_alignParentLeft="true"
    android:layout_marginLeft="22dp"
    android:src="@drawable/button1" />

<ImageButton
    android:id="@+id/imageButton2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:layout_marginLeft="46dp"
    android:layout_toRightOf="@+id/imageButton1"
    android:src="@drawable/button2" />

 </RelativeLayout>

如何在ExpandableListView的子视图上处理两个图像按钮

1 个答案: