Android首选项：如何验证其值？特别优惠

我们如何验证输入到EditBoxPrefence的值

例如，用户输入一个目录名，如

myfolder//或/myfolder或

我想修剪任何斜线，然后存储首选项的值

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怎么可能呢？

您可以测试该值并告诉用户出了什么问题： 或者你想做什么就做什么

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    addPreferencesFromResource(R.xml.preferences);

    Your_Pref = (EditTextPreference) getPreferenceScreen().findPreference("Your_Pref");

    Your_Pref.setOnPreferenceChangeListener(new OnPreferenceChangeListener() {

        @Override
        public boolean onPreferenceChange(Preference preference, Object newValue) {
            Boolean rtnval = true;
            if (Your_Test) {
                final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
                builder.setTitle("Invalid Input");
                builder.setMessage("Something's gone wrong...");
                builder.setPositiveButton(android.R.string.ok, null);
                builder.show();
                rtnval = false;
            }
            return rtnval;
        }
    });
}

---

您可以测试该值并告诉用户出了什么问题： 或者你想做什么就做什么

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    addPreferencesFromResource(R.xml.preferences);

    Your_Pref = (EditTextPreference) getPreferenceScreen().findPreference("Your_Pref");

    Your_Pref.setOnPreferenceChangeListener(new OnPreferenceChangeListener() {

        @Override
        public boolean onPreferenceChange(Preference preference, Object newValue) {
            Boolean rtnval = true;
            if (Your_Test) {
                final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
                builder.setTitle("Invalid Input");
                builder.setMessage("Something's gone wrong...");
                builder.setPositiveButton(android.R.string.ok, null);
                builder.show();
                rtnval = false;
            }
            return rtnval;
        }
    });
}

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谢谢，在没有提示的情况下处理值并保存处理后的值如何？谢谢，在没有提示的情况下处理值并保存处理后的值如何？