5
我想实现一个自定义AutoCompleteTextView从显示联系人姓名，电话号码类型和电话号码的建议列表中选择联系人的电话号码。我创建了一个自定义的CursorAdapter，为每个建议定义和设置我的Layout和TextView，并根据用户输入的文本通过runQueryOnBackgroundThread查询联系人。我遇到的问题是，对于前两个输入值（例如“ab”表示“abcd”和“abyz”）而言，建议似乎是正确的，但对于超出此范围的任何内容（例如“abc”表示“abyz”）则不适用。对于后者，当选择“abyz”建议时，返回“abcd”的值。Android - 自定义AutoCompleteTextView CursorAdaptor - 建议行为
代码的主要活动：
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);
}
});
代码为我的联系人类返回所有联系人光标：
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;
}
代码为我的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，当用户在AutoCompleteTextView中输入“ab”时，建议是“abcd”和“abyz”，但是当用户键入“abc”时，建议只是“abyz”。当用户在这种情况下选择“abyz”时，返回“abcd”的值。这里有两个截图，显示什么，我试图描述：
我读过的每一个问题，我可以在这里找到和其他地方，但似乎无法弄清楚这一点。我对Android开发相当陌生，所以如果我的错误很简单，我会提前道歉。提前致谢！