我試圖從Firebase檢索數據,但沒有任何檢索。該應用程序寫入成功,但是當它試圖獲取信息時,它只是顯示一個空白屏幕。我的火力地堡結構Saica>Calendar>key>Data
從Firebase檢索數據到列表視圖
我已經包括了我的火力地堡結構的圖片
這是我的代碼:
public class Admin_ViewEvent extends AppCompatActivity {
private ListView mListView;
private ArrayList<String> mMeetings = new ArrayList<>();
private Firebase mRef;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_admin__view_event);
mRef = new Firebase("https://saica-sgb-77a4f.firebaseio.com/Meetings");
mListView = (ListView) findViewById(R.id.ListView);
final ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, mMeetings);
mListView.setAdapter(arrayAdapter);
mRef.addChildEventListener(new ChildEventListener() {
@Override
public void onChildAdded(DataSnapshot dataSnapshot, String s) {
String value = dataSnapshot.getValue(String.class);
mMeetings.add(value);
arrayAdapter.notifyDataSetChanged();
}
@Override
public void onChildChanged(DataSnapshot dataSnapshot, String s) {
}
哪些數據您試圖解析? – Rahul
@rahulkapoor日期,說明如圖所示 – Pooveshin
@rahulkapoor我已經爲會議添加了正確的圖片 – Pooveshin