我正在制作一个小型 Android 应用程序，它允许用户从您的联系人列表中选择一个电话号码。当用户选择同一个联系人时，我的应用程序崩溃。
这里是LogCat：
E/AndroidRuntime(6745): FATAL EXCEPTION: main
E/AndroidRuntime(6745): java.lang.RuntimeException: Unable to resume activity{it.bisemanuDEV.callresponder/it.bisemanuDEV.callresponder.CallResponderListNumberActivity}: android.database.StaleDataException: Attempted to access a cursor after it has been closed.
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2608)
这是代码的一部分：
Uri contactData = data.getData();
if (contactData != null) {
Cursor c = managedQuery(contactData, null, null, null, null);
if (c.moveToFirst()) {
try {
m_phones.add( c.getString( c.getColumnIndexOrThrow( ContactsContract.CommonDataKinds.Phone.NUMBER)).trim());
m_contacts.add( c.getString( c.getColumnIndexOrThrow(ContactsContract.Contacts.DISPLAY_NAME)).trim());
// add new item to list
String tmp_phones = m_phones.toString();
tmp_phones = tmp_phones.substring(1,tmp_phones.length() - 1);
// save to sharedpreferences
SharedPreferences.Editor editor = settings.edit();
editor.putString(BLACKLIST_PREF, tmp_phones);
editor.commit();
// refresh ui
m_adapter.notifyDataSetChanged(); // inform user
String toast_text = getString(R.string.phone_added);
Toast.makeText( getApplicationContext(), toast_text,Toast.LENGTH_SHORT ).show();
} catch (Exception e) {
Log.e(TAG, e.getMessage());
}
}
c.close();
你能帮我吗？谢谢