我需要展示一个自动完成文本框,它会加载联系人的电子邮件地址。 我已经尝试使用自定义适配器,但文本框中没有任何内容被填充。没有任何建议。任何解决方案都将非常有用。
我需要展示一个自动完成文本框,它会加载联系人的电子邮件地址。 我已经尝试使用自定义适配器,但文本框中没有任何内容被填充。没有任何建议。任何解决方案都将非常有用。
请尝试以下方法:
ArrayList<String> emailAddressCollection = new ArrayList<String>();
ContentResolver cr = getContentResolver();
Cursor emailCur = cr.query(ContactsContract.CommonDataKinds.Email.CONTENT_URI, null, null, null, null);
while (emailCur.moveToNext())
{
String email = emailCur.getString(emailCur.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));
emailAddressCollection.add(email);
}
emailCur.close();
String[] emailAddresses = new String[emailAddressCollection.size()];
emailAddressCollection.toArray(emailAddresses);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_dropdown_item_1line, emailAddresses);
AutoCompleteTextView textView = (AutoCompleteTextView)findViewById(R.id.YOUR_TEXT_VIEW);
textView.setAdapter(adapter);
}
注意: 不要忘记在Manifest.xml中添加READ_CONTACTS
权限:
<uses-permission android:name="android.permission.READ_CONTACTS" />
@Korhan 肯定是比我想出来的更优雅的方式。我的代码虽然能用,但 @Korhan 的更简单。谢谢。我创建了这个自定义适配器类来读取联系人
class ContactListAdapter extends CursorAdapter implements Filterable {
private ContentResolver mCR;
public ContactListAdapter(Context context, Cursor c,boolean a) {
super(context, c, true);
mCR = context.getContentResolver();
}
@Override
public void bindView(View view, Context context, Cursor cursor) {
((TextView) view).setText(cursor.getString(1));
}
@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(1));
return view;
}
@Override
public String convertToString(Cursor cursor) {
return cursor.getString(1);
}
public Cursor runQueryOnBackgroundThread(CharSequence constraint) {
if (getFilterQueryProvider() != null) {
return getFilterQueryProvider().runQuery(constraint);
}
StringBuilder buffer = null;
String[] args = null;
if (constraint != null) {
buffer = new StringBuilder();
buffer.append("UPPER(");
buffer.append(ContactsContract.CommonDataKinds.Email.ADDRESS);
buffer.append(") GLOB ?");
args = new String[] { constraint.toString().toUpperCase() + "*" };
}
return mCR.query(ContactsContract.CommonDataKinds.Email.CONTENT_URI,CreateEventActivity.PEOPLE_PROJECTION ,buffer == null ? null : buffer.toString(), args,
null);
}
}
还有主要的Activity:
MultiAutoCompleteTextView act = (MultiAutoCompleteTextView)findViewById(R.id.attende_list);
ContentResolver content = getContentResolver();
Cursor cursor = content.query(ContactsContract.CommonDataKinds.Email.CONTENT_URI,PEOPLE_PROJECTION, null, null, null);
ContactListAdapter adapter = new ContactListAdapter(this, cursor, true);
act.setThreshold(0);
act.setAdapter(adapter);
act.setTokenizer(new MultiAutoCompleteTextView.CommaTokenizer());