的Android simplecursoradapter我想看到的simplecursoradapter和我交往的內置的ListView列表中顯示他們的姓名,電子郵件及圖片(所有保存在源碼)與ImageView的
有這個代碼(請注意,我」米不使用光標,我使用的是空怎麼一回事,因爲我goig提供後光標):
private CursorAdapter contactAdapter;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
contactList = getListView();
contactList.setOnItemClickListener(viewContactListener);
String[] from = new String[] { "name","email","image" };
int[] to = new int[] { R.id.contactTextView,R.id.emailTextView2,R.id.imageView1};//imageView1 is a ImageView
contactAdapter = new SimpleCursorAdapter(
MyFirstActivity.this, R.layout.contact_list_item, null, from, to);
setListAdapter(contactAdapter);
}
然後:
@Override
protected void onResume()
{
super.onResume();
new StartPopulate().execute((Object[]) null);
}
private class StartPopulate extends AsyncTask<Object, Object, Cursor>
{
MyDatabaseConnector myDatabaseConnector =
new MyDatabaseConnector(myActivity.this);
// perform the database access
@Override
protected Cursor doInBackground(Object... params)
{
myDatabaseConnector.open();
return databaseConnector.getAllContacts(); //it is a cursor where I have the fields which I want to return
}
@Override
protected void onPostExecute(Cursor result)
{
contactAdapter.changeCursor(result);
myDatabaseConnector.close();
}
}
如果你notitce我提供內部AO光標nPostExchange與changeCursor,而不是在開始,所以我的問題是:1.如何使用viewBinder這樣? Images in SimpleCursorAdapter 我想添加一個圖像裏面(int [] to = new int [] {R.id.contactTextView,R.id.emailTextView2,R.id.imageView1}; // imageView1是一個ImageView) 所以在這個這樣我可以看到的姓名,電子郵件,圖像
而且我的數據庫有以下幾點:字段:
"CREATE TABLE wholeContacts" +
"(_id integer primary key autoincrement," +
"name TEXT, email TEXT, +
"image BLOB);";
2-I'ts一個很好的做法,使用SQLite的照片的保存(內部數據庫)如果可以包含近5000條記錄,但圖片是2.6kb(很小的圖片)? 感謝