在我的应用程序接收到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,但是它没有用,所以我现在尝试使用计时器每秒更新一次列表视图,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;
收到新的SMS消息时,最初尝试使用BroadcastReceiver更新列表视图。
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();
}
答案 0 :(得分:1)
将listview更新代码放入listview所属的Activity中的方法内,然后从广播接收器的onReceive调用该方法。肯定会的。还要检查代码是否正确更新了列表视图。
public class SmsBroadcastReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context paramContext, Intent intent) { // change the parameters depending upon your requirements
// do something here with the sms received if necessary
// then call the listview update method here
}
}
答案 1 :(得分:1)
还要添加到答案中,请不要忘记在AndroidManifest.xml文件中添加以下内容
npm install -g @angular/cli@1.4.9
以上内容也为我解决了问题。感谢您的帮助。