EditText不断返回Empty-Android

Question

I'm attempting to null check an EditText (which should be simple enough) however each time I enter text into my two ET's - they always return as empty: "" and they should not (if they have text in them).

I've looked over several other SO articles related to this and none of the fixes seem to resolve the issue.

Can anyone spot what I might be doing wrong in this instance?

Source Snippet:

Java class:

...

public void doneClicked(View v) throws JSONException {

    LayoutInflater li = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View v1 = li.inflate(R.layout.profile_notification_settings_list_edit, null);

    final EditText label = (EditText) v1.findViewById(R.id.emaillabel);
    final EditText value = (EditText) v1.findViewById(R.id.emailvalue);

    String sValue = value.getText().toString();
    if (sValue.matches("")) {
        Toast.makeText(this, "You did not enter a value", Toast.LENGTH_SHORT).show();
        return;
    }

    String sLabel = label.getText().toString();
    if (sLabel.matches("")) {
        Toast.makeText(this, "You did not enter a label", Toast.LENGTH_SHORT).show();
        return;
    }

...

Adapter:

@Override
public View getView(final int i, View view, ViewGroup viewGroup) {
    view = inflater.inflate(R.layout.profile_notification_settings_list_edit, null);
    EditText value = (EditText) view.findViewById(R.id.emailvalue);
    value.setHint("Value");
    value.setText(valueList[i]);

    EditText label = (EditText) view.findViewById(R.id.emaillabel);
    if (labelList != null)
        label.setHint("Label");
    label.setText(labelList[i]);

Full source:

Java Class:

https://pastebin.com/y1e9J1yE

Adapter:

https://pastebin.com/Zqh3eCAk

Answer 1

Because everytime you click you are creating a new view which has nothing to do with the views currently being displayed on the screen

public void doneClicked(View v) throws JSONException {

    // don't inflate new views
    LayoutInflater li = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View v1 = li.inflate(R.layout.profile_notification_settings_list_edit, null);

    final EditText label = (EditText) v1.findViewById(R.id.emaillabel);
    final EditText value = (EditText) v1.findViewById(R.id.emailvalue);

    // ... code

Note : you cannot directly fetch the data from rowItemVies from ListView , so you need to add method in your adapter class to get the selected position through which you can fetch the rowView using yourListView.getChildAt(position) and further fetch data from children in rowView

Answer 2

使用sValue.trim（）。equals（“”）而不是sValue.matches（“”）