使用自定义 ListPreference，我试图让用户在 2 个预定义值和他可以使用编辑文本设置的自定义值之间进行选择。一切似乎都正常，除了当我点击 EditText 时键盘没有出现。但是，EditText 似乎像往常一样获得了焦点。
这是我得到的图像（看到焦点似乎没问题） https://www.dropbox.com/s/isejjkveonwnb3f/Screenshot_2013-05-30-21-43-41.png
这是自定义列表首选项行的布局：
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:paddingBottom="8dip"
android:paddingTop="8dip"
android:paddingLeft="10dip"
android:paddingRight="10dip">
<EditText
android:id="@+id/ET_prefs_customText"
android:layout_width="0dip"
android:layout_weight="1"
android:hint="@string/SP_address_hint"
android:layout_height="wrap_content"
/>
<RadioButton
android:id="@+id/custom_list_view_row_radio_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="false" />
</LinearLayout>
这是我的 CustomListPreference 代码：
public class CustomListPreference extends ListPreference
{
/*
* removed useless stuff
*/
@Override
protected void onPrepareDialogBuilder(Builder builder)
{
entries = getEntries();
entryValues = getEntryValues();
if (entries == null || entryValues == null || entries.length != entryValues.length )
{
throw new IllegalStateException(
"ListPreference requires an entries array and an entryValues array which are both the same length");
}
customListPreferenceAdapter = new CustomListPreferenceAdapter(mContext);
builder.setAdapter(customListPreferenceAdapter, new DialogInterface.OnClickListener()
{
public void onClick(DialogInterface dialog, int which)
{
}
});
}
private class CustomListPreferenceAdapter extends BaseAdapter
{
private SharedPreferences prefs;
public CustomListPreferenceAdapter(Context context)
{
this.prefs = PreferenceManager.getDefaultSharedPreferences(context);
}
/*
* removed usual adapter stuff (getCount, getItem...)
*/
public View getView(final int position, View convertView, ViewGroup parent)
{
View row = convertView;
if(row == null)
{
//If it's not the last one: use a normal holder...
if(position < 2)
{
NormalHolder holder = null;
row = mInflater.inflate(R.layout.normal_list_preference_row, parent, false);
if(prefs.getString(mContext.getString(R.string.SP_address), "0").equals(entryValues[position])) {
holder = new NormalHolder(row, position,true);
} else {
holder = new NormalHolder(row, position,false);
}
row.setTag(holder);
row.setClickable(true);
row.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
for(RadioButton rb : rButtonList)
{
if(rb.getId() != position)
rb.setChecked(false);
}
int index = position;
String value = entryValues[index].toString();
Log.v("Editor", "putting string" + value);
editor.putString(mContext.getString(R.string.SP_address), value);
editor.commit();
Dialog mDialog = getDialog();
mDialog.dismiss();
}
});
//Otherwise, if it is the last one...
} else {
//Use the custom row
row = mInflater.inflate(R.layout.custom_list_preference_row, parent, false);
String fromPref = prefs.getString(mContext.getString(R.string.SP_address), "0");
boolean flag=false;
for(CharSequence entry : entryValues) {
if(entry.toString().equals(fromPref)) {
flag=true;
}
}
//And use a "custom holder"
CustomHolder holder;
if(!flag) {
holder = new CustomHolder(row, position, fromPref, true);
} else {
holder = new CustomHolder(row, position, "", false);
}
row.setTag(holder);
}
}
return row;
}
/*
* This class just shows the information in row from the position and the PreferenceList entries
*/
class NormalHolder
{
private TextView text = null;
private RadioButton rButton = null;
NormalHolder(View row, int position, boolean isCheked)
{
text = (TextView)row.findViewById(R.id.custom_list_view_row_text_view);
text.setText(entries[position]);
rButton = (RadioButton)row.findViewById(R.id.custom_list_view_row_radio_button);
rButton.setId(position);
rButton.setChecked(isCheked);
// also need to do something to check your preference and set the right button as checked
rButtonList.add(rButton);
rButton.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener()
{
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked)
{
if(isChecked)
{
/*
* Put stuff into SharedPreference
*/
}
}
});
}
}
/*
* This class display the text within the EditText
*/
class CustomHolder
{
private EditText text = null;
private RadioButton rButton = null;
CustomHolder(View row, int position, String pref, boolean checked)
{
text = (EditText)row.findViewById(R.id.ET_prefs_customText);
text.setText(pref);
rButton = (RadioButton)row.findViewById(R.id.custom_list_view_row_radio_button);
rButton.setId(position);
rButton.setChecked(checked);
rButtonList.add(rButton);
rButton.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener()
{
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked)
{
if(isChecked)
{
/*
* Put stuff into SharedPreference
*/
}
}
});
}
}
}
}
请注意，这是基于此处找到的另一个答案：listPreference 中的自定义行？
编辑：我在上面添加了一些代码（请参阅 参考资料onPrepareDialogBuilder），因为它可能来自构建的 Dialog。