android - how to call the ok button in the EditTextPreference

Question

I have an EditTextPreference in the PreferenceActivity. When user click the EditTextPreference will show a dialog. In the dialog, user can input a value, and the dialog has "OK" and "Cancel" buttons. I want to call the click event of ok button to check the value, but I do not know how to call the click even.

I know I can use EditTextPreference.setOnPreferenceChangeListener(), but I want to know if I can use OK button click event.

Answer 1

You can extend EditTextPreference to get control over the click handler.

package myPackage;
public class CustomEditTextPreference extends EditTextPreference {

    public CustomEditTextPreference(Context context) {
        super(context);
    }

    public CustomEditTextPreference(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public CustomEditTextPreference(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    @Override
    public void onClick(DialogInterface dialog, int which) {
        if (which == DialogInterface.BUTTON_POSITIVE) {
            // add Handler here
        }
        super.onClick(dialog, which);
    }

}

In the Xml instead of <EditTextPreference/> reference it like this:

<myPackage.CustomEditTextPreference android:dialogTitle="Registration Key" android:key="challengeKey" android:title="Registration Key" android:summary="Click here to enter the registration key you received by email."/>