Question

我有如下列表视图。 TextView中的文本来自数据库。

-------------------------
TextView          Button
-------------------------

当我点击按钮时，我想在Toast中显示此行的TextView中的文本。

我的问题如下：当我点击按钮时，我显示的是行的文本，由光标选中。我没有显示按钮所在行的文本。我知道问题是mCursor变量。

我不知道如何修复它。有人有想法吗？

这是我的ModulCursorAdapter：

public class ModuleCursorAdapter extends ResourceCursorAdapter implements OnClickListener {
private Context mContext;
private Cursor mCursor;

    public ModuleCursorAdapter(Context context, Cursor cur) {
        super(context, R.layout.notes_row, cur);
        this.mContext = context;

    }

    @Override
    public View newView(Context context, Cursor cur, ViewGroup parent) {
        LayoutInflater li = LayoutInflater.from(context);           
        return li.inflate(R.layout.notes_row, parent, false);
    }



    @Override
    public void bindView(View view, Context context, Cursor cur) {  
        this.mCursor = cur;

        TextView tvText1 = (TextView)view.findViewById(R.id.text1);            
        Button btnButtonOFF = (Button)view.findViewById(R.id.buttonOFF);

        tvText1.setText(cur.getString(cur.getColumnIndex(NotesDbAdapter.KEY_TITLE)));

        int idRow = cur.getColumnIndex(NotesDbAdapter.KEY_ROWID);
        btnButtonOFF.setTag(cur.getInt(idRow));
        btnButtonOFF.setOnClickListener(btnButtonOFFclicked);           

    }
    @Override
    public void onClick(View view) {

    }       

    private OnClickListener btnButtonOFFclicked = new OnClickListener() {
        @Override
        public void onClick(View view) {                
            Toast.makeText(mContext,mCursor.getString(mCursor.getColumnIndex(NotesDbAdapter.KEY_TITLE)), Toast.LENGTH_LONG).show();                 
        }
    };
}

注释

xml-File中的按钮：

<Button android:id="@+id/buttonOFF" 
        android:gravity="center"
        android:layout_height="wrap_content" 
        android:layout_width="wrap_content"
        android:layout_alignParentRight="true" 
        android:focusable="false"
        android:text="OFF" />

 <Button android:id="@+id/buttonOFF2" 
        android:gravity="center"
        android:layout_height="wrap_content" 
        android:layout_width="wrap_content"
        android:layout_alignParentRight="true" 
        android:focusable="false"
        android:onClick="btnButtonOFFclicked"
        android:text="ON" />

MainActivity中的OnClickMethod

 public class MainActivity extends ListActivity {
 .....
 public void btnButtonOFFclicked(View view) 
  {          
     Toast.makeText(MainActivity.this,"Test", Toast.LENGTH_LONG).show();
     //Toast.makeText(mContext,mCursor.getString(mCursor.getColumnIndex(NotesDbAdapter.KEY_TITLE)), Toast.LENGTH_LONG).show();              
  }
}

MainActivity

public class MainActivity extends ListActivity {
...
private void fillData() {
    Cursor notesCursor = mDbHelper.fetchAllNotes();
    startManagingCursor(notesCursor);

   adapter = new ModuleCursorAdapter(this, notesCursor);
   setListAdapter(adapter);
}
...
}

Notes.DbAdapter.fetchAllNotes（）方法

public Cursor fetchAllNotes() {
    return mDb.query(DATABASE_TABLE, new String[] {KEY_ROWID, KEY_TITLE,
            KEY_DEVICETYPE, KEY_HOMECODE, KEY_DEVICECODE}, null, null, null, null, null);
}

感谢。

菲利克斯

Answer 1

只需在你的适配器中创建一个私有类，并在bindView方法中设置监听器就像

public void bindView(View view, Context context, Cursor cur) {  
    this.mCursor = cur;

    TextView tvText1 = (TextView)view.findViewById(R.id.text1);            
    Button btnButtonOFF = (Button)view.findViewById(R.id.buttonOFF);

    tvText1.setText(cur.getString(cur.getColumnIndex(NotesDbAdapter.KEY_TITLE)));

    int idRow = cur.getColumnIndex(NotesDbAdapter.KEY_ROWID);
    btnButtonOFF.setOnClickListener(new OnItemClickListener(cur.getInt(idRow)));           

}

private class OnItemClickListener implements OnClickListener {
    private int position;


    public OnItemClickListener(int position) {
        super();
        this.position = position;
    }


    @Override
    public void onClick(View v) {
        // position is an id.
    }
}

Answer 2

这里是一个代码，您可以通过该代码找到按钮的行位置

覆盖ModuleCursorAdapter中的方法

 @Override
 public View getView(int position, View convertView, ViewGroup parent) 
{

    convertView= super.getView(position,convertView,parent );
     Button btnButtonOFF = (Button)convertView.findViewById(R.id.buttonOFF); 

    String tag =  btnButtonOFF.getTag().toString()+","+position;
     btnButtonOFF.setTag(tag);

}

现在在btnButtonOFFclicked监听器的onclick方法获取View＆amp;的标签提取附加标签的位置如果有用，请投票

带有TextView和Button的Listview。单击按钮的RowId

2 个答案: