我有一个从 Android ContactManager 示例中获取的联系人列表视图。该列表显示正常,但我不知道如何从所选项目中获取信息,例如“姓名”和“电话号码”。
我可以获得选定的位置,但 mContactList.getItemAtPosition(position) 的结果是 ContentResolver$CursorWrapperInner ,这对我来说没有任何意义。我无法从中得到正面或反面。
有人知道如何从列表视图中的所选项目中获取姓名/ID/电话号码吗?
这是我的代码。
@Override
public void onCreate(Bundle savedInstanceState)
{
Log.v(TAG, "Activity State: onCreate()");
super.onCreate(savedInstanceState);
setContentView(R.layout.choose_contact);
// Obtain handles to UI objects
mAddAccountButton = (Button) findViewById(R.id.addContactButton);
mContactList = (ListView) findViewById(R.id.contactList);
mShowInvisibleControl = (CheckBox) findViewById(R.id.showInvisible);
// Initialize class properties
mShowInvisible = false;
mShowInvisibleControl.setChecked(mShowInvisible);
mContactList.setOnItemClickListener(new OnItemClickListener()
{
public void onItemClick(AdapterView<?> parent, View view, int position, long id)
{
addContactAt(position);
}
});
mShowInvisibleControl.setOnCheckedChangeListener(new OnCheckedChangeListener() {
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
Log.d(TAG, "mShowInvisibleControl changed: " + isChecked);
mShowInvisible = isChecked;
populateContactList();
}
});
// Populate the contact list
populateContactList();
}
/**
* Populate the contact list based on account currently selected in the account spinner.
*/
private SimpleCursorAdapter adapter;
private void populateContactList() {
// Build adapter with contact entries
Cursor cursor = getContacts();
String[] fields = new String[] {
ContactsContract.Data.DISPLAY_NAME
};
adapter = new SimpleCursorAdapter(this, R.layout.contact_entry, cursor,
fields, new int[] {R.id.contactEntryText});
mContactList.setAdapter(adapter);
}
/**
* Obtains the contact list for the currently selected account.
*
* @return A cursor for for accessing the contact list.
*/
private Cursor getContacts()
{
// Run query
Uri uri = ContactsContract.Contacts.CONTENT_URI;
String[] projection = new String[] {
ContactsContract.Contacts._ID,
ContactsContract.Contacts.DISPLAY_NAME
};
String selection = ContactsContract.Contacts.IN_VISIBLE_GROUP + " = '" +
(mShowInvisible ? "0" : "1") + "'";
String[] selectionArgs = null;
String sortOrder = ContactsContract.Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC";
return managedQuery(uri, projection, selection, selectionArgs, sortOrder);
}
private void addContactAt(int position)
{
Object o = mContactList.getItemAtPosition(position);
}
}`