From the sameple custom row in a listPreference? i tried to create my own custom listpreference but nothing is getting saved or doesn't get populate old indexes.
public class FontSizePreference extends ListPreference {
private CustomListPreferenceAdapter customListPreferenceAdapter = null;
private Context mContext;
private LayoutInflater mInflater;
// private CharSequence[] entries;
// private CharSequence[] entryValues;
private ArrayList<RadioButton> rButtonList;
private SharedPreferences prefs;
private SharedPreferences.Editor editor;
private static final String TAG = FontSizePreference.class.getSimpleName();
private String font_size = "";
public FontSizePreference(Context context, AttributeSet attrs) {
super(context, attrs);
mContext = context;
mInflater = LayoutInflater.from(context);
rButtonList = new ArrayList<RadioButton>();
prefs = PreferenceManager.getDefaultSharedPreferences(mContext);
editor = prefs.edit();
}
@Override
protected void onPrepareDialogBuilder(Builder builder) {
font_size = prefs.getString(KEY_FONT_SIZE, "18");
if (getEntries() == null || getEntryValues() == null
|| getEntries().length != getEntryValues().length) {
throw new IllegalStateException(
"ListPreference requires an entries array and an entryValues array which are both the same length");
}
customListPreferenceAdapter = new CustomListPreferenceAdapter(mContext, getEntries(),
getEntryValues());
builder.setAdapter(customListPreferenceAdapter, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
}
});
super.onPrepareDialogBuilder(builder);
}
private class CustomListPreferenceAdapter extends BaseAdapter {
private CharSequence[] entries;
private CharSequence[] entryValues;
public CustomListPreferenceAdapter(Context mContext, CharSequence[] entries,
CharSequence[] entryValues) {
this.entries = entries;
this.entryValues = entryValues;
}
public int getCount() {
return entries.length;
}
public Object getItem(int position) {
return entries[position];
}
public long getItemId(int position) {
return position;
}
public View getView(final int position, View convertView, ViewGroup parent) {
CustomHolder holder = null;
View row = convertView;
if (row == null) {
row = mInflater.inflate(R.layout.fontsize_layout, parent, false);
}
boolean flag = false;
for (CharSequence entry : entryValues) {
if (entry.toString().equals(font_size)) {
flag = true;
}
}
holder = new CustomHolder(row, position, font_size, flag);
row.setTag(holder);
row.setClickable(false);
row.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
for (RadioButton rb : rButtonList) {
Log.d(TAG, "current row listener : " + rb.getId() + " : : : " + position);
if (rb.getId() != position)
rb.setChecked(false);
else
rb.setChecked(true);
}
int index = position;
String value = (String)entryValues[index];
editor.putString(KEY_FONT_SIZE, value).commit();
getDialog().dismiss();
}
});
return row;
}
class CustomHolder {
private TextView text = null;
private RadioButton rButton = null;
CustomHolder(final View row, final int position, String prefValue, boolean checked) {
Log.d(TAG, "current position is : " + position);
text = (TextView)row.findViewById(R.id.fontSizeTitle);
text.setText(entries[position]);
text.setTextSize(Float.valueOf(entryValues[position].toString()));
rButton = (RadioButton)row.findViewById(R.id.fontSizeState);
int newIndex = Arrays.asList(entryValues).indexOf(prefValue);
// rButton.setId(newIndex);
if (position != newIndex)
rButton.setChecked(false);
rButtonList.add(rButton);
rButton.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub
if (isChecked) {
for (RadioButton rb : rButtonList) {
if (rb != buttonView)
rb.setChecked(false);
else {
rb.setChecked(true);
}
}
}
int index = buttonView.getId();
String value = (String)entryValues[position];
editor.putString(KEY_FONT_SIZE, value).commit();
getDialog().dismiss();
}
});
}
}
}
everytime i run this sample it generates 35 instances of radio buttons and it doesn't show either the previous selected button or currently selected button in the view. Please help me in fixing this issue. Here are xml code for arrays,layout and prefernce call
<string-array name="font_size_options">
<item>Larger</item>
<item>Large</item>
<item>Medium</item>
<item>Small</item>
<item>Smallest</item>
</string-array>
<string-array name="font_size_values">
<item>26</item>
<item>20</item>
<item>18</item>
<item>14</item>
<item>10</item>
</string-array>
layout xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clickable="true"
android:orientation="horizontal"
android:padding="5dp" >
<TextView
android:id="@+id/fontSizeTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_weight="1"
/>
<RadioButton
android:id="@+id/fontSizeState"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_weight="0" />
</LinearLayout>
and preference is :
<com.example.samplepreference.FontSizePreference
android:key="semc_pref_key_font_size"
android:entries="@array/font_size_options"
android:entryValues="@array/font_size_values"
android:title="@string/font_size_title" />
also setting button (rButton.setId(newIndex)) always return nullpointer.
