到目前为止,我有一个片段,其中有2个edittext和一个按钮。我需要做的是保存在Edittext中编写的文本,以便当我更改为另一个片段然后返回时,我将看到我在Edittexts中编写的最后一句话。
为解决这个问题,我使用了sharedpreference,但是我只能使它与按钮一起使用,以便在按下按钮时保存edittext中的文本,然后在onCreate中的片段中对其进行检索。我想要的是自动更新,所以我不必按任何按钮。
public class KontaktFragment extends Fragment {
private EditText beskedTekst;
private EditText emneTekst;
private Button kontaktSend;
public KontaktFragment() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate( R.layout.fragment_kontakt, container, false );
beskedTekst = (EditText) view.findViewById( R.id.beskedEdit );
emneTekst = (EditText) view.findViewById( R.id.emneEdit );
kontaktSend = (Button) view.findViewById( R.id.kontaktButton );
hentTekst();
kontaktSend.setOnClickListener( new View.OnClickListener() {
@Override
public void onClick(View v) {
sendMail();
}
} );
return view;
}
public void sendMail() {
String besked = beskedTekst.getText().toString();
String emne = emneTekst.getText().toString();
//String recipientList = kontaktTekst.getText().toString();
//String[] recipients = recipientList.split(",");
gemTekst();
Intent intent = new Intent( Intent.ACTION_SEND );
intent.putExtra( Intent.EXTRA_EMAIL, new String[]{"xxx"} );
intent.putExtra( Intent.EXTRA_SUBJECT, emne );
intent.putExtra( Intent.EXTRA_TEXT, besked );
intent.setType( "message/rfc822" );
startActivity( Intent.createChooser( intent, "Vælg en email klient" ) );
intent.setData( Uri.parse( "mailto:" ) );
}
public void gemTekst() {
String besked = beskedTekst.getText().toString();
String emne = emneTekst.getText().toString();
SharedPreferences sp = this.getActivity().getSharedPreferences( "kontakt", 0 );
SharedPreferences.Editor sedt = sp.edit();
sedt.putString( "textvalue", besked );
sedt.putString( "txtopertaive", emne );
sedt.commit();
}
public void hentTekst() {
SharedPreferences sp = getActivity().getSharedPreferences( "kontakt", 0 );
String tValue = sp.getString( "textvalue", "" );
String tOperative = sp.getString( "txtopertaive", "" );
beskedTekst.setText( tValue );
emneTekst.setText( tOperative );
}
}
答案 0 :(得分:2)
在片段中添加onPause
生命周期方法并添加所需的方法。
@Override
public void onPause() {
super.onPause();
gemTekst();
}