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我想實現一個自定義AutoCompleteTextView從顯示聯繫人姓名，電話號碼類型和電話號碼的建議列表中選擇聯繫人的電話號碼。我創建了一個自定義的CursorAdapter，爲每個建議定義和設置我的Layout和TextView，並根據用戶輸入的文本通過runQueryOnBackgroundThread查詢聯繫人。我遇到的問題是，對於前兩個輸入值（例如「ab」表示「abcd」和「abyz」）而言，建議似乎是正確的，但對於超出此範圍的任何內容（例如「abc」表示「abyz」）則不適用。對於後者，當選擇「abyz」建議時，返回「abcd」的值。Android - 自定義AutoCompleteTextView CursorAdaptor - 建議行爲
代碼的主要活動：
final ContactInfo cont = new ContactInfo(ctx);
Cursor contacts = cont.getContacts2(null);
startManagingCursor(contacts);
ContactsAutoCompleteCursorAdapter adapter = new ContactsAutoCompleteCursorAdapter(this, contacts);
mPersonText.setAdapter(adapter);
mPersonText.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
Cursor cursor = (Cursor) arg0.getItemAtPosition(arg2);
String number = cursor.getString(cursor.getColumnIndexOrThrow(ContactsContract.CommonDataKinds.Phone.NUMBER));
mPersonNum.setText(number);
}
});
代碼爲我的聯繫人類返回所有聯繫人光標：
public Cursor getContacts2(String where)
{
Uri uri = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;
String[] projection = new String[] {
ContactsContract.CommonDataKinds.Phone._ID,
ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Phone.TYPE,
ContactsContract.CommonDataKinds.Phone.NUMBER};
Cursor people = ctx.getContentResolver().query(uri, projection, null, null, ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME + " COLLATE LOCALIZED ASC");
return people;
}
代碼爲我的CursorAdapter：
public class ContactsAutoCompleteCursorAdapter extends CursorAdapter implements Filterable {
private TextView mName, mType, mNumber;
private ContentResolver mContent;
public ContactsAutoCompleteCursorAdapter(Context context, Cursor c) {
super(context, c);
mContent = context.getContentResolver();
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
final LayoutInflater mInflater = LayoutInflater.from(context);
final View ret = mInflater.inflate(R.layout.contacts_auto_list, null);
mName = (TextView) ret.findViewById(R.id.name);
mType = (TextView) ret.findViewById(R.id.phonetype);
mNumber = (TextView) ret.findViewById(R.id.phonenum);
return ret;
}
@Override
public void bindView(View view, Context context, Cursor cursor) {
int nameIdx = cursor.getColumnIndexOrThrow(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME);
int typeIdx = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.TYPE);
int numberIdx = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);
String name = cursor.getString(nameIdx);
int type = cursor.getInt(typeIdx);
String number = cursor.getString(numberIdx);
mName.setText(name);
if (type == 1) {mType.setText("Home");}
else if (type == 2) {mType.setText("Mobile");}
else if (type == 3) {mType.setText("Work");}
else {mType.setText("Other");}
mNumber.setText(number);
}
@Override
public String convertToString(Cursor cursor) {
int nameCol = cursor.getColumnIndexOrThrow(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME);
String name = cursor.getString(nameCol);
return name;
}
@Override
public Cursor runQueryOnBackgroundThread(CharSequence constraint) {
// this is how you query for suggestions
// notice it is just a StringBuilder building the WHERE clause of a cursor which is the used to query for results
if (getFilterQueryProvider() != null) { return getFilterQueryProvider().runQuery(constraint); }
String[] projection = new String[] {
ContactsContract.CommonDataKinds.Phone._ID,
ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Phone.TYPE,
ContactsContract.CommonDataKinds.Phone.NUMBER};
return mContent.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, projection,
"UPPER(" + ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME + ") LIKE '" + constraint.toString().toUpperCase() + "%'", null,
ContactsContract.Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC");
}
}
如上所述，當用戶在AutoCompleteTextView中輸入「ab」時，建議是「abcd」和「abyz」，但是當用戶鍵入「abc」時，建議只是「abyz」。當用戶在這種情況下選擇「abyz」時，返回「abcd」的值。這裏有兩個截圖，顯示什麼，我試圖描述：
我讀過的每一個問題，我可以在這裏找到和其他地方，但似乎無法弄清楚這一點。我對Android開發相當陌生，所以如果我的錯誤很簡單，我會提前道歉。提前致謝！