java - 如何在按下 ListView 外的按钮时获取 ListView 中所有元素的值

Question

我的 ListView 的每一行都由一个 TextView 和一个 EditText 组成，我在 ListView 之外有一个按钮。单击该按钮时，我想检索所有 ExitText 值。

我在 DialogFragment 中生成了 ListView。这是我要完成的 saveButton onClick。这是我的代码。任何帮助将不胜感激。

public class SubVitalsEntryDialogFragment extends DialogFragment {

    ArrayList<SubVitals> subVitalList = new ArrayList<SubVitals>();
    ListView mylist;
    Button saveButton;
    Button cancelButton;
    EditText entryEditText;

    public static SubVitalsEntryDialogFragment newInstance(ArrayList<SubVitals> sub) {
        SubVitalsEntryDialogFragment f = new SubVitalsEntryDialogFragment();

        // Supply num input as an argument.
        Bundle args = new Bundle();
        args.putParcelableArrayList("subVitalList", sub);
        f.setArguments(args);
        return f;
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {

        View view = inflater.inflate(R.layout.subvitals_dialog_layout, null, false);
        mylist = (ListView) view.findViewById(R.id.vitalEntryListView);
        saveButton = (Button) view.findViewById(R.id.entrySaveButton);
        cancelButton = (Button) view.findViewById(R.id.entryCancelButton);
        //getDialog().getWindow().requestFeature(Window.FEATURE_NO_TITLE);
        getDialog().setTitle("Enter your vitals");

        cancelButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                getDialog().dismiss();
            }
        });

        saveButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                ///??????????

            }
        });
        return view;
    }


    @Override
    public void onActivityCreated(Bundle savedInstanceState) {

        super.onActivityCreated(savedInstanceState);
        subVitalList = getArguments().getParcelableArrayList("subVitalList");
        ArrayAdapter<SubVitals> adapter = new MyListAdapter(subVitalList);
        mylist.setAdapter(adapter);

    }

    private class MyListAdapter extends ArrayAdapter<SubVitals>{

        public MyListAdapter(ArrayList<SubVitals> subVitalList){

            super(getActivity(), R.layout.subvitals_dialog_layout, subVitalList);
            Log.d("Tag", "super okay");
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            View itemView = convertView;
            if (itemView == null)
                itemView = LayoutInflater.from(this.getContext()).inflate(R.layout.sub_vital_template, parent, false);

            String currentVital = subVitalList.get(position).getSubVitalName();

            //Fill the view

            TextView vitalText = (TextView) itemView.findViewById((R.id.vitalEntryTextView));
            vitalText.setText(currentVital);

            return itemView;
        }
        @Override
        public int getCount() {
            // TODO Auto-generated method stub
            return subVitalList.size();
        }
    }

}

------------编辑----------------

public class SubVitalsEntryDialogFragment extends DialogFragment {

    ArrayList<SubVitals> subVitalList = new ArrayList<SubVitals>();
    ListView mylist;
    Button saveButton;
    Button cancelButton;
    EditText entryEditText;
    List<String> vitalsEntered = new ArrayList<>();
    private HashMap<String, String> textValues = new HashMap<String, String>();

    public static SubVitalsEntryDialogFragment newInstance(ArrayList<SubVitals> sub) {
        SubVitalsEntryDialogFragment f = new SubVitalsEntryDialogFragment();

        // Supply num input as an argument.
        Bundle args = new Bundle();
        args.putParcelableArrayList("subVitalList", sub);
        f.setArguments(args);
        return f;
    }

    @Override
    public View onCreateView(LayoutInflater inflater, final ViewGroup container,
                             Bundle savedInstanceState) {

        View view = inflater.inflate(R.layout.subvitals_dialog_layout, null, false);
        mylist = (ListView) view.findViewById(R.id.vitalEntryListView);
        saveButton = (Button) view.findViewById(R.id.entrySaveButton);
        cancelButton = (Button) view.findViewById(R.id.entryCancelButton);
        //getDialog().getWindow().requestFeature(Window.FEATURE_NO_TITLE);
        getDialog().setTitle("Enter your vitals");

        cancelButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                getDialog().dismiss();
            }
        });

        saveButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Log.d("SAVE INSIDE","OK");
                for (Map.Entry<String,String> entry : textValues.entrySet()) {
                    String key = entry.getKey();
                    String value = entry.getValue();
                    Log.d("HASHCHECK","Key: " + key + " Value" + value);
                    // do stuff
                }


            }
        });
        return view;
    }


    @Override
    public void onActivityCreated(Bundle savedInstanceState) {

        super.onActivityCreated(savedInstanceState);
        subVitalList = getArguments().getParcelableArrayList("subVitalList");
        ArrayAdapter<SubVitals> adapter = new MyListAdapter(subVitalList);
        mylist.setAdapter(adapter);

    }

    private class MyListAdapter extends ArrayAdapter<SubVitals>{



        public MyListAdapter(ArrayList<SubVitals> subVitalList){

            super(getActivity(), R.layout.subvitals_dialog_layout, subVitalList);
            Log.d("Tag", "super okay");
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            //return super.getView(position, convertView, parent);
            //Making sure we've a view to work with(may have been given null
            Log.d("TAG","Inside get view");
            View itemView = convertView;
            boolean convertViewWasNull = false;

            if (itemView == null){
                itemView = LayoutInflater.from(this.getContext()).inflate(R.layout.sub_vital_template, parent, false);
            convertViewWasNull = true;
            }

            TextView vitalText = (TextView) itemView.findViewById((R.id.vitalEntryTextView));
            EditText vitalEditText = (EditText) itemView.findViewById(R.id.vitalEntryEditText);

            if(convertViewWasNull ){
                vitalEditText.addTextChangedListener(new GenericTextWatcher(vitalEditText));
            }

            String currentVital = subVitalList.get(position).getSubVitalName();

            //Fill the view

            vitalText.setText(currentVital);
            return itemView;

        }
        @Override
        public int getCount() {
            // TODO Auto-generated method stub
            return subVitalList.size();
        }

        private class GenericTextWatcher implements TextWatcher {

            private View view;
            private GenericTextWatcher(View view) {
                this.view = view;
            }

            public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
            public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}

            public void afterTextChanged(Editable editable) {

                String text = editable.toString();
                //save the value for the given tag :
                textValues.put(view.getTag().toString(), editable.toString());
            }
        }

    }

}

Answer 1

不要使用 ListView。它并非设计用于此类目的。 ListView 中的行被回收，滚动时可能会丢失已经输入的数据。请改用 LinearLayout。这样您就可以直接访问其中的 View 。