在我的应用程序接收新短信的应用程序中,我希望列表视图立即使用列表视图中显示的新消息对其进行更新。我尝试使用广播接收器代码的示例代码,但它不起作用,所以我现在尝试使用计时器每秒更新列表视图并显示收到的最新消息,但这也不起作用。
final Handler handler = new Handler();
handler.postDelayed(new Runnable()
{
@Override
public void run()
{
inboxArrayAdapter.notifyDataSetChanged();
((BaseAdapter)inboxmessages.getAdapter()).notifyDataSetChanged();
handler.postDelayed(this, 1000 );
}
}, 1000);
return view;
收到新 SMS 消息时使用 BroadcastReceiver 更新列表视图的原始尝试。
SmSBroadcastReceiver.java
public class SmsBroadcastReceiver extends BroadcastReceiver
{
public static final String SMS_BUNDLE = "pdus";
// https://javapapers.com/android/android-receive-sms-tutorial/
public void onReceive(Context context, Intent intent)
{
Bundle intentExtras = intent.getExtras();
if (intentExtras != null)
{
Object[] sms = (Object[]) intentExtras.get(SMS_BUNDLE);
String smsMessageStr = "";
for (int i = 0; i < sms.length; i++)
{
// Get sms message
SmsMessage smsMessage = SmsMessage.createFromPdu((byte[]) sms[i]);
// Get content and number
String smsBody = smsMessage.getMessageBody().toString();
String address = smsMessage.getOriginatingAddress();
// Create display message
smsMessageStr += "SMS From: " + address + "\n";
smsMessageStr += smsBody + "\n";
// Add it to the list
CommandsFragment inst = CommandsFragment.instance();
inst.updateList(smsMessageStr);
}
CommandsFragment inst = CommandsFragment.instance();
inst.updateList(smsMessageStr);
}
}
}
CommandsFragment.java
public static CommandsFragment instance()
{
return inst;
}
@Override
public void onStart() {
super.onStart();
inst = this;
}
public static CommandsFragment newInstance()
{
CommandsFragment fragment = new CommandsFragment();
return fragment;
}
public void updateList(final String smsMessage)
{
inboxArrayAdapter.insert(smsMessage, 0);
inboxArrayAdapter.notifyDataSetChanged();
}