Question

我无法在search: function(URL) { var self = this; $.ajax({ type: "GET", dataType: 'json', url: URL, success: function(response){ self.showResults(response); }.bind(this) }); }类的visibility方法中为行布局设置bindview。（我得到空的空间）

码

CursorAdapter

请帮帮我。

Answer 1

隐藏任何行项目都不是一个好主意。最佳实践是实现可过滤，并避免将数据绑定到适配器中。

就像......

class ContactListAdapter extends CursorAdapter implements Filterable {
        public ContactListAdapter(Context context, Cursor c) {
            super(context, c);
            mContent = context.getContentResolver();
        }

        @Override
        public View newView(Context context, Cursor cursor, ViewGroup parent) {
            final LayoutInflater inflater = LayoutInflater.from(context);
            final TextView view = (TextView) inflater.inflate(
                    android.R.layout.simple_dropdown_item_1line, parent, false);
            view.setText(cursor.getString(COLUMN_DISPLAY_NAME));
            return view;
        }

        @Override
        public void bindView(View view, Context context, Cursor cursor) {
            ((TextView) view).setText(cursor.getString(COLUMN_DISPLAY_NAME));
        }

        @Override
        public String convertToString(Cursor cursor) {
            return cursor.getString(COLUMN_DISPLAY_NAME);
        }

        @Override
        public Cursor runQueryOnBackgroundThread(CharSequence constraint) {
            FilterQueryProvider filter = getFilterQueryProvider();
            if (filter != null) {
                return filter.runQuery(constraint);
            }

            Uri uri = Uri.withAppendedPath(
                    Contacts.CONTENT_FILTER_URI,
                    Uri.encode(constraint.toString()));
            return mContent.query(uri, CONTACT_PROJECTION, null, null, null);
        }

        private ContentResolver mContent;
    }

    public static final String[] CONTACT_PROJECTION = new String[] {
        Contacts._ID,
        Contacts.DISPLAY_NAME
    };

    private static final int COLUMN_DISPLAY_NAME = 1;
}

您可以使用已实施的方法过滤掉您的数据。

@Override
public Cursor runQueryOnBackgroundThread(CharSequence constraint) {
      FilterQueryProvider filter = getFilterQueryProvider();
      if (filter != null) {
          return filter.runQuery(constraint);
      }

      Uri uri = Uri.withAppendedPath(
            Contacts.CONTENT_FILTER_URI,
            Uri.encode(constraint.toString()));
      return mContent.query(uri, CONTACT_PROJECTION, null, null, null);
}

快乐编码......

android中的游标适配器

1 个答案: