Android。 ImageView無法投射到android.widget.textview

Question

我有一個問題。請幫幫我。我有viewpager的活動。見代碼：

protected void onCreate(Bundle savedInstanceState) 
{ 
    super.onCreate(savedInstanceState); 
    mContext = this; 
    setContentView(R.layout.cards); 
    expListViewCategory = new ExpandableListView(mContext); 
    SetListViewCategory(); 
    pages = new Vector<View>(); 
    pages.add(expListViewCategory); 
    adapter = new CardsPagerAdapter(mContext, pages); 
    pager = (ViewPager)findViewById(R.id.viewpager); 
    pager.setAdapter(adapter); 
} 

private void SetListViewCategory() 
    { 
     groupData = new ArrayList<Map<String,String>>(); 
     childData = new ArrayList<ArrayList<Map<String, String>>>(); 

     String groupFrom[] = new String[] {"groupName"}; 
     int groupTo[] = new int[] {R.id.textGroup}; 

     String childFrom[] = new String[] {"imagePath", "subCatName"}; 
     int childTo[] = new int[] {R.id.cardImage, R.id.textChild}; 

     SimpleExpandableListAdapter adapter = new SimpleExpandableListAdapter(
       this, 
       groupData, R.layout.group_view, groupFrom, groupTo, 
       childData, R.layout.child_view, childFrom, childTo); 

     expListViewCategory.setAdapter(adapter); 

child_view.xml

<?xml version="1.0" encoding="utf-8"?> 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
       android:layout_width="match_parent" 
       android:layout_height="match_parent" 
       android:id="@+id/liner"> 

    <ImageView 
      android:id="@+id/cardImage" 
      android:layout_width="60dp" 
      android:layout_height="40dp" 
      android:layout_marginLeft="20dp" 
      android:layout_marginTop="20dp"/> 

    <TextView 
     android:id="@+id/textChild" 
     android:layout_width="wrap_content" 
     android:layout_height="40dp" 
     android:layout_marginLeft="20dp" 
     android:layout_marginTop="20dp" 
     android:textColor="@android:color/white" /> 

</LinearLayout> 

不起作用：

String childFrom[] = new String[] {"imagePath", "subCatName"}; 
      int childTo[] = new int[] {R.id.cardImage, R.id.textChild}; 

工作：

String childFrom[] = new String[] {"subCatName"}; 
     int childTo[] = new int[] {R.id.textChild}; 

隨着ImageView的我有錯誤：「ImageView的不能投到android.widget.textview「。

對不起，我的英語！提前感謝！

Answer 1

您需要擴展SimpleExpandableListAdapter因爲他們預計TexViews http://developer.android.com/reference/android/widget/SimpleExpandableListAdapter.html

看看類似的解決方案 https://groups.google.com/forum/?fromgroups=#!topic/android-developers/J4H9332aQp4