所以我是Android的新手，我正在使用Parse作为我的后端。我在Parse中有一个名为PrescriptionArray的Array列。我想获取此数组的内容（字符串值）并使用它们填充listView。我想我只是错过了几行，但不确定在哪里？任何帮助将不胜感激..提前致谢！
public class PrescriptionsArrayActivity extends AppCompatActivity {
private ListView lvPrescriptions;
private EditText etMedicalID;
private ArrayAdapter<String> adapter ;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_prescriptions_array);
lvPrescriptions = (ListView) findViewById(R.id.lvPrescriptions);
etMedicalID = (EditText) findViewById(R.id.etMedicalID);
//Get the Medical ID number from previous activity
Bundle bundle = getIntent().getExtras();
String str = bundle.getString("MedicalID");
Toast.makeText(getBaseContext(), str, Toast.LENGTH_LONG).show();
etMedicalID.setText(str);
final List<String> arrayprescription = new ArrayList<String>();
final ArrayAdapter adapter = new ArrayAdapter(PrescriptionsArrayActivity.this, android.R.layout.simple_list_item_1, arrayprescription);
final ParseQuery<ParseObject> query = ParseQuery.getQuery("PrescriptionObject");
query.whereEqualTo("MedicalID", etMedicalID.getText().toString());
query.findInBackground(new FindCallback<ParseObject>() {
public void done(List<ParseObject> prescriptionList, ParseException e) {
if (e == null) {
for (int i = 0; i < prescriptionList.size(); i++) {
ParseObject p = prescriptionList.get(i);
if (p.getList("PrescriptionArray") != null) {
String s = arrayprescription.toString();
adapter.addAll(Arrays.asList(s));
}
}
lvPrescriptions.setAdapter(adapter);
}
}
});
}
}