良い一日、このトラブルを抱えていてください、そして私は理由がわからないようです。基本的に、連絡先APIを介して連絡先を選択し、データベースに保存して、リストビューに表示しようとしています。しかし、何らかの理由で、連絡先の詳細を取得した後、カスタムアダプターは呼び出されなくなり、アクティビティが最初に作成されたときにのみ呼び出されるため、空になります。私が逃したかもしれないものをお願いします。ありがとうございました。
ここに私のコードがあります：
public class GroupDetails extends FragmentActivity implements OnClickListener, LoaderCallbacks<Cursor> {
//variable for debugging the application
public static final String TAG = "MyApp.Debug";
//request code for using with action pick intent
static final int PICK_CONTACT = 1;
//initial variables
Button add_button;
TextView label;
ListView list;
ResponderDB dbadapter;
DueCustomCursorAdapter cursoradapter;
//DueCustomCursorLoader loader;
//cursor to retrieve contact details
private Cursor contactsCursor;
String groupname;
long rowId;
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.group_detail_list);
//only intialize here. database will be open in custom cursor loader
dbadapter = new ResponderDB(this);
getSupportLoaderManager().initLoader(0, null, this);
/*Read intent and the extras passed*/
Bundle extra = getIntent().getExtras();
if(!extra.isEmpty() || extra.equals(null)){
groupname = extra.getString("group_name");
rowId = extra.getLong("rowId");
}
list = (ListView)findViewById(android.R.id.list);
add_button = (Button)findViewById(R.id.add_button_id);
label = (TextView)findViewById(R.id.group_label_id);
Log.d(TAG, "calling custom adapter here now");
cursoradapter = new DueCustomCursorAdapter(GroupDetails.this, null, CursorAdapter.FLAG_REGISTER_CONTENT_OBSERVER );
list.setAdapter(cursoradapter);
add_button.setOnClickListener(this);
}
@Override
public void onClick(View view) {
int selection = view.getId();
if(selection == R.id.add_button_id){
Intent intent = new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI);
startActivityForResult(intent, PICK_CONTACT);
}
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data){
if(requestCode == PICK_CONTACT){
getContactInfo(data);
}
}
private void getContactInfo(Intent intent) {
String number = null;
String name = null;
String[] projection = {ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Phone.NUMBER};
CursorLoader loader = new CursorLoader(this,intent.getData(),
null,null,null,null);
contactsCursor = loader.loadInBackground();
if(contactsCursor.moveToFirst()){
String id = contactsCursor.getString(contactsCursor.getColumnIndex(ContactsContract.Contacts._ID));
name = contactsCursor.getString(contactsCursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
//get the Phone Number
Cursor numberCursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI
, null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = ?", new String[] {id}, null);
while(numberCursor.moveToNext()){
number = numberCursor.getString(numberCursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
}
}
Log.d(TAG, "Successfully added contacts for group");
//dbadapter.updateGroup(rowId, values);
dbadapter.saveContacts(name, number, String.valueOf(rowId));
cursoradapter.notifyDataSetChanged();
getSupportLoaderManager().getLoader(0).onContentChanged();
}
public static final class DueCustomCursorLoader extends SimpleCursorLoader {
public static final String TAG = "MyApp.Debug";
public static int RETRIEVE_CODE = 1;
ResponderDB dbadapter1;
int retrieveCode;
public DueCustomCursorLoader(Context context, ResponderDB dbadapter) {
super(context);
this.dbadapter1= dbadapter;
}
public DueCustomCursorLoader(Context context, ResponderDB dbadapter, int retrieveCode){
super(context);
this.dbadapter1 = dbadapter;
this.retrieveCode = retrieveCode;
}
@Override
public Cursor loadInBackground() {
Cursor cursor = null;
dbadapter1.open();
cursor = dbadapter1.readContact(retrieveCode);
return cursor;
}
}
public class DueCustomCursorAdapter extends CursorAdapter {
public static final String TAG = "SmsResponder.Debug";
private Context myContext;
public DueCustomCursorAdapter(Context context,Cursor c, int flags) {
super(context, c, flags);
myContext = context;
}
//never seem to get here
@Override
public void bindView(View view, Context context, Cursor cursor) {
ViewHolder holder = (ViewHolder)view.getTag();
String contactName = cursor.getString(cursor.getColumnIndexOrThrow(ResponderDB.NAME));
String contactNumber = cursor.getString(cursor.getColumnIndex(ResponderDB.NUMBER));
Log.d(TAG, "contact name is " + contactName);
Log.d(TAG, "contact number is " + contactNumber);
holder.contact_name.setText(contactName);
holder.contact_number.setText(contactNumber);
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
ViewHolder holder = new ViewHolder();
View view = LayoutInflater.from(myContext).inflate(R.layout.group_detail_item, parent,false);
holder.contact_name = (TextView)view.findViewById(R.id.group_item_id);
holder.contact_number = (TextView)view.findViewById(R.id.group_subitem_id);
view.setTag(holder);
return view;
}
}
static class ViewHolder {
TextView text;
TextView contact_name;
TextView contact_number;
CheckBox checkbox;
}
@Override
public Loader<Cursor> onCreateLoader(int id, Bundle arg1) {
return new DueCustomCursorLoader(GroupDetails.this, dbadapter, (int)rowId);
}
@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
cursoradapter.swapCursor(data);
}
@Override
public void onLoaderReset(Loader<Cursor> arg0) {
cursoradapter.swapCursor(null);
}
}
データベースから問題が発生していないため、ここにコードを追加していません。