從broadcastreceiver收到意圖后，更改未反映出來

Question

如果條件為“ blabla”為真，則在收到接收調用后，我正在執行adapter.notifyDataSetChanged()和listView.invalidateViews() 。 但是我的UI仍然沒有更新。

public class UserFragment extends Fragment{

public class FragmentReceiver extends BroadcastReceiver {
        @Override
        public void onReceive(Context context, Intent intent) {
            if(getSetting("CurrentView","").equalsIgnoreCase("blabla")){
                adapter.notifyDataSetChanged();
                listView.invalidateViews(); //this is not updating the UI.

}
}

注意：我試圖通過再次替換相同的片段來調用相同的UserFragment.java來更新更改，但這雖然更新了UI但給出了例外IllegalStateException: Can not perform this action after onSaveInstanceState

我剩下的onReceive方法中的代碼-

UserFragment firstFragment = new UserFragment ();
getSupportFragmentManager().beginTransaction()
                    .replace(R.id.headlines_fragment, firstFragment)
                    .addToBackStack(null).commit(); //IllegalStateException: Can not perform this action after onSaveInstanceState

有任何想法嗎？

Answer 1

嘗試這個

public class UserFragment extends Fragment{
public class FragmentReceiver extends BroadcastReceiver {
        @Override
        public void onReceive(Context context, Intent intent) {
            if(getSetting("CurrentView","").equalsIgnoreCase("blabla")){
                adapter.notifyDataSetChanged();
                listView.invalidateViews(); //this is not updating the UI.
                UserFragment.this.onCreate(savedInstanceState);

}
}