使用SimpleCursorAdapter将OnViewListener与getView（）

Question

希望你好好的。 我搜索了更多有关如何在getView（）方法中实现OnclickListener的信息，但仍未实现，我想通过单击位于ListView内的按钮来执行操作。 这是我的代码。

public class Restaurant extends Activity {
private DatabaseHandler myDatabaseHandler;
ListView listContent;
Context context;
TextView rest_name;
TextView rest_hotline;
ImageButton call;
ImageView rest_image;
String image_string;
String r_n = "";
String r_e = "";
String r_h = "";
private CursorAdapter dataSource;
RelativeLayout resta;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_restaurant);
      listContent = (ListView)findViewById(R.id.restaurants_list);
      call = (ImageButton) findViewById(R.id.call);

      /*
       *  Create/Open a SQLite database
       *  and fill with dummy content
       *  and close it
       */
      myDatabaseHandler = new DatabaseHandler(this);
      myDatabaseHandler.openToWrite();
      myDatabaseHandler.deleteAll();

      myDatabaseHandler.insert("First","1111",R.drawable.ic_launcher);
      myDatabaseHandler.insert("Second","0000",R.drawable.ic_launcher);
      myDatabaseHandler.close();

      /*
       *  Open the same SQLite database
       *  and read all it's content.
       */
      myDatabaseHandler = new DatabaseHandler(this);
      myDatabaseHandler.openToRead();

      Cursor cursor = myDatabaseHandler.queueAll();
      startManagingCursor(cursor);
      String[] from = new String[]{DatabaseHandler.KEY_REST_NAME,DatabaseHandler.KEY_REST_HOTLINE, DatabaseHandler.KEY_REST_IMAGE};
      int[] to = new int[]{R.id.rest_name,R.id.rest_hotline, R.id.rest_image};

      final ListAdapter cursorAdapter = new SimpleCursorAdapter(this, R.layout.lists, cursor, from, to);

      listContent.setAdapter(cursorAdapter);   
      myDatabaseHandler.close();
}
private class CustomCursorAdapter extends SimpleCursorAdapter {

     public CustomCursorAdapter(Context context, int layout, Cursor c,
            String[] from, int[] to) {
        super(context, layout, c, from, to);
        // TODO Auto-generated constructor stub
    }
       class ViewHolder {
         ImageButton b;
     }
    public View getView(final int position, View convertView, ViewGroup parent)
    {
        View view = convertView;
        ViewHolder holder;
        if(view == null) {
            LayoutInflater vi = (LayoutInflater)getBaseContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
               view = vi.inflate(R.layout.lists, null);
        holder = new ViewHolder();
        holder.b = (ImageButton) view.findViewById(R.id.call);
        view.setTag(holder);
        }
        else
        {

            holder = (ViewHolder) view.getTag();
        holder.b.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Toast.makeText(getApplicationContext(),"ImageClickClick "+position, Toast.LENGTH_LONG).show();  
            }
        });
        }
        return view;    
    }

XML文件：listview的行

<RelativeLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/restau" 
    android:layout_height="wrap_content" 
    android:layout_width="fill_parent"
    android:descendantFocusability="blocksDescendants"
    android:orientation="vertical">
    <RelativeLayout
        android:id="@+id/resta"
        android:layout_width="fill_parent"
        android:layout_height="70dip"
        android:layout_marginLeft="10dip"
        android:layout_marginRight="10dip"
        android:background="#e74c3c">
    <ImageView 
        android:id="@+id/rest_image"
        android:layout_width="70dip"
        android:layout_height="70dip"
        android:layout_marginLeft="10dip"
        android:src="@drawable/ic_launcher"/>
    <TextView
        android:id="@+id/rest_name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerVertical="true"
        android:layout_marginLeft="15dip"
        android:layout_toRightOf="@+id/rest_image"
        android:text="ALL"
        android:textColor="#FFFFFF"
        android:textStyle="bold"
        android:textSize="25dip"
        android:typeface="sans"/>
    <TextView
        android:id="@+id/rest_hotline"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerVertical="true"
        android:layout_marginLeft="15dip"
        android:layout_toRightOf="@+id/rest_image"
        android:text="Hotline"
        android:layout_below="@+id/rest_name"
        android:textColor="#FFFFFF"
        android:textStyle="bold"
        android:textSize="15dip"
        android:typeface="sans"/>
    <ImageButton 
        android:id="@+id/call"
        android:layout_height="wrap_content"
        android:layout_width="wrap_content"
        android:layout_centerVertical="true"
        android:layout_alignParentRight="true"
        android:layout_marginRight="15dip"
        android:focusable = "false"
        android:clickable="true"
        android:background="@drawable/ic_launcher"/>
    </RelativeLayout>
    <RelativeLayout 
        android:id="@+id/stroke"
        android:layout_width="fill_parent"
        android:layout_height="1dip"
        android:layout_below="@+id/cat"
        android:layout_marginLeft="10dip"
        android:layout_marginRight="10dip"
        android:background="#d93b2b">
    </RelativeLayout>
    </RelativeLayout>

Answer 1

您正在使用CustomCursorAdapter的是B'coz

您正在使用

final ListAdapter cursorAdapter = new SimpleCursorAdapter(this, R.layout.lists, cursor, from, to);

并且您在CustomCursorAdapter内给出了onClick操作

holder.b.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Toast.makeText(getApplicationContext(),"ImageClickClick "+position, Toast.LENGTH_LONG).show();  
            }
        });

所以你应该使用像

final CustomCursorAdapter cursorAdapter = new CustomCursorAdapter(this, R.layout.lists, cursor, from, to);

Answer 2

尝试删除getView方法中的else语句

Answer 3

我认为错过代码对齐会给您带来麻烦，请尝试这种方式...希望它会工作..

if(view == null) {
    LayoutInflater vi = (LayoutInflater)getBaseContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    view = vi.inflate(R.layout.lists, null);
    holder = new ViewHolder();
    holder.b = (ImageButton) view.findViewById(R.id.call);
    view.setTag(holder);
}
else
{
    holder = (ViewHolder) view.getTag();

}
holder.b.setOnClickListener(new OnClickListener() {
    public void onClick(View v) {
    // TODO Auto-generated method stub
    Toast.makeText(getApplicationContext(),"ImageClickClick "+position, Toast.LENGTH_LONG).show();  
}
});

Answer 4

尝试这个

holder.b.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                Toast.makeText(getApplicationContext(),"ImageClickClick "+position, Toast.LENGTH_LONG).show();  

                }

            }
        });

或实现CustomCursorAdapter

private class CustomCursorAdapter extends SimpleCursorAdapter implements OnClickListener

和使用

@Override
public void onClick(View v) {
    // TODO Auto-generated method stub

Toast.makeText（getApplicationContext（），“ ImageClickClicked”，Toast.LENGTH_LONG）.show（）;

    }