的Android simplecursoradapter我想看到的simplecursoradapter和我交往的内置的ListView列表中显示他们的姓名,电子邮件及图片(所有保存在源码)与ImageView的
有这个代码(请注意,我”米不使用光标,我使用的是空怎么一回事,因为我goig提供后光标):
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);
}
然后:
@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我提供内部AO光标nPostExchange与changeCursor,而不是在开始,所以我的问题是:1.如何使用viewBinder这样? Images in SimpleCursorAdapter 我想添加一个图像里面(int [] to = new int [] {R.id.contactTextView,R.id.emailTextView2,R.id.imageView1}; // imageView1是一个ImageView) 所以在这个这样我可以看到的姓名,电子邮件,图像
而且我的数据库有以下几点:字段:
"CREATE TABLE wholeContacts" +
"(_id integer primary key autoincrement," +
"name TEXT, email TEXT, +
"image BLOB);";
2-I'ts一个很好的做法,使用SQLite的照片的保存(内部数据库)如果可以包含近5000条记录,但图片是2.6kb(很小的图片)? 感谢