我有一个偏好片段，在其中我需要setOnClickListener()一个偏好并覆盖该onPreferenceClick()方法。但是，单击首选项时不会调用我的新方法。
我可以ClickListener通过将代码移动到我的自定义EditTextPreference类来获得工作，但必须启用首选项才能触发侦听器。
我想将此首选项用作标签来显示值，然后单击它显示选项以更改它。我不希望用户直接编辑它。
我怎样才能做到这一点。？
代码如下
public class PrefActivity extends PreferenceActivity {
static final String TAG="Preference Activity";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getFragmentManager().beginTransaction().replace(android.R.id.content, new MyPreferenceFragment()).commit();
}
@Override
protected void onStop() {
// TODO Auto-generated method stub
super.onStop();
}
public static class MyPreferenceFragment extends PreferenceFragment
{
@Override
public void onCreate(final Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.preferences);
Preference clickedPreference = (Preference) findPreference("userLocation");
clickedPreference.setOnPreferenceClickListener(new OnPreferenceClickListener() {
@Override
public boolean onPreferenceClick(Preference preference) {
// TODO Auto-generated method stub
SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(preference.getContext());
boolean locationTypeSetting;
LocationSetting locationSetting = new LocationSetting(preference.getContext());
String clickedPreference = preference.getKey();
if (clickedPreference.equals("userLocation")){
locationTypeSetting = settings.getBoolean("locationSetting", false);
if (locationTypeSetting == true)
{
AlertDialog.Builder noEditDialogBuilder = new AlertDialog.Builder(preference.getContext());
noEditDialogBuilder.setTitle(R.string.no_edit_dialog_title);
noEditDialogBuilder
.setMessage(R.string.no_edit_dialog_message)
.setPositiveButton(R.string.no_edit_dialog_positive_action,null);
AlertDialog noEditDialog = noEditDialogBuilder.create();
noEditDialog.show();
}
else
locationSetting.displayMap(0);
}
return false;
}
});
}
}
}
我的偏好 XML
<SwitchPreference
android:defaultValue="0"
android:key="locationSetting"
android:summary="Automatic Location"
android:switchTextOff="OFF"
android:switchTextOn="ON" />
<com.example.test.EditTextPreferenceWithSummary
android:key="userLocation"
android:title="Address"
android:shouldDisableView="false"
android:enabled="false"
android:selectable="true" />
我的 EditTextPreferenceWithSummary 类
public class EditTextPreferenceWithSummary extends EditTextPreference {
private final static String TAG = EditTextPreferenceWithSummary.class.getName();
@Override
protected View onCreateView(ViewGroup parent) {
this.setSummary(this.getText());
return super.onCreateView(parent);
}
public EditTextPreferenceWithSummary(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
public EditTextPreferenceWithSummary(Context context) {
super(context);
init();
}
private void init() {
Log.e(TAG, "init");
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this.getContext());
String currentText = prefs.getString("userLocation", this.getText());
this.setSummary(currentText);
setOnPreferenceChangeListener(new OnPreferenceChangeListener() {
@Override
public boolean onPreferenceChange(Preference preference, Object newValue) {
preference.setSummary(newValue.toString());
return true;
}
});
}
}
我删除了片段并直接使用类。还是同样的问题
代码如下
public class PrefActivity extends PreferenceActivity {
static final String TAG="Preference Activity";
@SuppressWarnings("deprecation")
@Override
public void onCreate(final Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.preferences);
Preference clickedPreference = (Preference) findPreference("userLocation");
clickedPreference.setOnPreferenceClickListener(new OnPreferenceClickListener() {
@Override
public boolean onPreferenceClick(Preference preference) {
// TODO Auto-generated method stub
SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(preference.getContext());
boolean locationTypeSetting;
LocationSetting locationSetting = new LocationSetting(preference.getContext());
String clickedPreference = preference.getKey();
if (clickedPreference == "userLocation"){
locationTypeSetting = settings.getBoolean("locationSetting", false);
if (locationTypeSetting == true)
{
AlertDialog.Builder noEditDialogBuilder = new AlertDialog.Builder(preference.getContext());
noEditDialogBuilder.setTitle(R.string.no_edit_dialog_title);
noEditDialogBuilder
.setMessage(R.string.no_edit_dialog_message)
.setPositiveButton(R.string.no_edit_dialog_positive_action,null);
AlertDialog noEditDialog = noEditDialogBuilder.create();
noEditDialog.show();
}
else
locationSetting.displayMap(0);
}
return false;
}
});
}
@Override
protected void onStop() {
// TODO Auto-generated method stub
super.onStop();
}
}