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我有兩個列表，使用相同的擴展BaseAdapter在相同的活動佈局，但只有一個更新時，我呼籲notifyDataSetChanged（我當然稱爲它）。我一直在尋找了幾天，無法發現問題。Android：擴展BaseAdapter與列表不更新
活動得到配對和可用的藍牙設備，並分別列出了他們，我用了BluetoothChat樣品，但我需要自定義行必須改變它的一些。
主要問題是標記有「這僅適用於當其他（正下方）的評論」，按Ctrl + F到那裏更快。
這裏是我的特殊BaseAdapter（可能是無用的，但我無論如何它張貼）：
而且使用它的活動：
public class DeviceSelectActivity extends Activity
{
private ArrayList<Device> devAvailableList, devPairedList;
private DeviceListBaseAdapter devAvailableListAdapter, devPairedListAdapter;
private ListView devAvailableListView, devPairedListView;
private Button bFindDevices;
private BluetoothAdapter bluetoothAdapter;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.device_select);
// Setup Bluetooth devices lists with custom rows
devPairedListView = (ListView) findViewById(R.id.lvPairedDevices);
devPairedList = new ArrayList<Device>();
devPairedListAdapter = new DeviceListBaseAdapter(this, devPairedList);
devPairedListView.setAdapter(devPairedListAdapter);
// I commented this to see the behavior with only the first list
// devAvailableListView = (ListView) findViewById(R.id.lvAvailableDevices);
// devAvailableList = new ArrayList<Device>();
// devAvailableListAdapter = new DeviceListBaseAdapter(this, devAvailableList);
// devAvailableListView.setAdapter(devAvailableListAdapter);
bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
// Register a receiver to handle Bluetooth actions
registerReceiver(Receiver, new IntentFilter(BluetoothDevice.ACTION_FOUND));
registerReceiver(Receiver, new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED));
startDiscovery();
}
public void startDiscovery()
{
// Show search progress
bFindDevices.setText(R.string.searching);
bFindDevices.setEnabled(false);
// Remove title for available devices
findViewById(R.id.tvAvailableDevices).setVisibility(View.GONE);
// Get a set of currently paired devices
devPairedList.clear();
devPairedListAdapter.notifyDataSetChanged();
Set<BluetoothDevice> pairedDevices = bluetoothAdapter.getBondedDevices();
if(pairedDevices.size() > 0)
{
findViewById(R.id.tvPairedDevices).setVisibility(View.VISIBLE);
for(BluetoothDevice device : pairedDevices)
{
devPairedList.add(new Device(device.getName(), device.getAddress(), (short) 0));
// This only works when the other (just below) is commented
devPairedListAdapter.notifyDataSetChanged();
}
}
// devAvailableList.clear();
// devAvailableListAdapter.notifyDataSetChanged();
bluetoothAdapter.startDiscovery();
}
// add found device to the devices list
private final BroadcastReceiver Receiver = new BroadcastReceiver()
{
@Override
public void onReceive(Context context, Intent intent)
{
String action = intent.getAction();
if(BluetoothDevice.ACTION_FOUND.equals(action))
{
// Found a device in range
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
Device foundDevice = new Device(device.getName(), device.getAddress(), intent.getShortExtra(BluetoothDevice.EXTRA_RSSI, Short.MIN_VALUE));
// If it's not a paired device add it to the list
if(device.getBondState() != BluetoothDevice.BOND_BONDED)
{
// devAvailableList.add(foundDevice);
// Signal list content change
// devAvailableListAdapter.notifyDataSetChanged();
// Make the available devices title visible
findViewById(R.id.tvAvailableDevices).setVisibility(View.VISIBLE);
}
}
else if(BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action))
{
// When finished (timeout) remove the progress indicator
bFindDevices.setText(R.string.search);
bFindDevices.setEnabled(true);
}
}
};
}
我評論的一切從可用設備列表確保已配對的設備列表已填充。通過猜我會說可能有一些失落參考回事，但我不完全瞭解列表是如何工作的但我找不到它。
問題是，當我嘗試填充兩個lits並調用.add()時，設備實際上被添加到列表中（.size()返回正確的數字），但第一個不會刷新。