使用多个选择项将图像添加到优先列表中 [英] add image to preferance list with multiple selection items
问题描述
大家好，
我创建了列表首选项，其中有多个选项，如文本和复选框，我想添加图片，我的偏好代码在下面。
< br $>
公共类ListPreferenceMultiSelect扩展ListPreference {
私有字符串分隔符;
private static final String DEFAULT_SEPARATOR =bujji;
private static final String LOG_TAG =ListPreferenceMultiSelect;
private String checkAllKey = null;
private boolean [] mClickedDialogEntryIndices;
String selectedTech =Selected Tech - ;
boolean [] itemsChecked;
// = new boolean [items.length];
private int [] resourceIds = null;
//构造函数
public ListPreferenceMultiSelect（Context context，AttributeSet attrs）{
super（ context，attrs）;
TypedArray a = context.obtainStyledAttributes（attrs，R.styleable.ListPreferenceMultiSelect）;
checkAllKey = a.getString（R.styleable.ListPreferenceMultiSelect_checkAll）;
String s = a.getString（R.styleable.ListPreferenceMultiSelect_separator）;
if（s！= null）{
separator = s;
}否则{
分隔符= DEFAULT_SEPARATOR;
} $ / $
//将布尔数组初始化为与条目数相同的大小
mlickedDialogEntryIndices = new boolean [getEntries（）。length];
}
@Override
public void setEntries（CharSequence [] entries）{
super.setEntries（entries）;
//将布尔数组初始化为与条目数相同的大小
mlickedDialogEntryIndices = new boolean [entries。长度];
itemsChecked = new boolean [entries.length];
}
public ListPreferenceMultiSelect（Context context）{
this（context，null）;
}
@Override
protected void onPrepareDialogBuilder（Builder builder）{
final CharSequence [] entries = getEntries（）;
CharSequence [] entryValues = getEntryValues（）; <无线电通信/>
if（entries == null || entryValues == null || entries.length！= entryValues.length）{
抛出新的IllegalStateException（
ListPreference需要条目数组和entryValues数组，它们都是相同的长度）; < br $>
}
restoreCheckedEntries（）;
builder.setMultiChoiceItems（entries，mClickedDialogEntryIndices，
new DialogInterface.OnMultiChoiceClickListener（）{
public void onClick（DialogInterface dialog，int which boolean val）{
if（isCheckAllValue（which）== true）{
checkAll（dialog，val）;
}
mlickedDialogEntryIndices [which] = val;
/ * for （int i = 0; i< entries.length; i ++）{
if（itemsChecked [i]）{
selectedTech = selectedTech + entries [i] +;
它emsChecked [i] = false;
Toast.makeText（getContext（），+ selectedTech，9）.show（）;
}
} * /
//
}
}）;
}
private boolean isCheckAllValue（int which）{
final CharSequence [] entryValues = getEntryValues（）;
if（checkAllKey！= null）{
返回entryValues [which] .equals（checkAllKey）;
}
返回false;
}
private void checkAll（DialogInterface对话框，boolean val） {
ListView lv =（（AlertDialog）对话框）.getListView（）;
int size = lv.getCount（）;
for（ int i = 0;我<尺寸; i ++）{
lv.setItemChecked（i，val）;
mlickedDialogEntryIndices [i] = val;
}
}
public String [] parseStoredValue（CharSequence val）{
if（.equals（val））{
返回null;
}
else {
return（（String）val）.split（separator）; < br $>
}
}
private void restoreCheckedEntries（）{
CharSequence [] entryValues = getEntryValues（）;
//分解在共享偏好中读取的字符串
String [] vals = parseStoredValue（getValue（））;
if（vals！= null）{
List< string> valuesList = Arrays.asList（vals）;
// for（int j = 0; j< vals.length;> // TODO：检查为什么修剪...可以有一些随机的以某种方式添加空格？如果我们想要一个带尾随空格的值，那么这是一个问题吗？
//字符串val = vals [j] .trim（）;
for （int i = 0; i< entryvalues.length;> CharSequence entry = entryValues [i];
if（valuesList.contains（entry））{
mlickedDialogEntryIndices [ i] = true;
}
}
//}
}
}
@Override
protected void onDialogClosed（boolean positiveResult）{
// super.onDialogClosed（ positiveResult）;
ArrayList< string> values = new ArrayList< string>（）;
CharSequence [] entryValues = getEntryValues（）;
if（positiveResult&& ; entryValues！= null）{
for（int i = 0; i< entryvalues.length;> if（mClickedDialogEntryIndices [i] == true）{
//不要保存检查所有选项的状态 - 如果有的话
String val =（String）entryValues [i];
if（checkAllKey == null ||（val） .equals（checkAllKey）== false））{
values.add（val）;
Toast.makeText（getContext（），+ values，9）。 show（）;
}
}
}
if（callChangeListener （值））{
setValue（join（values，separator））;
}
}
}
//在这篇文章中向kurellajunior致记http://snippets.dzone.com/posts/show/91
protected static String join（Iterable<？extends Object> pColl，String separator）
{
Iterator<？ extends Object> oter;
if（pColl == null ||（！（oIter = pColl.iterator（））。hasNext（）））
return;
StringBuilder oBuilder = new StringBuilder（String.valueOf（oIter.next（）））;
while（oIter.hasNext（））
oBuilder.append （分隔符）.append（oIter.next（））;
返回oBuilder.toString（）;
}
// TODO：想保持静态，但需要手动放入分隔符或使用默认分隔符OV = I = XseparatorX = I = VO......
public static boolean contains（String straw，String haystack，String separator）{
if（separator == null）{
separator = DEFAULT_SEPARATOR;
}
String [] vals = haystack.split（separator）;
for（int i = 0; i< vals.length; > if（vals [i] .equals（straw））{
返回true;
}
}
返回false;
}
}
Hi All,
I have create list preference with multiple selection item like text and check box i want to add image to that my preference code is below.
public class ListPreferenceMultiSelect extends ListPreference {
private String separator;
private static final String DEFAULT_SEPARATOR = "bujji";
private static final String LOG_TAG = "ListPreferenceMultiSelect";
private String checkAllKey = null;
private boolean[] mClickedDialogEntryIndices;
String selectedTech="Selected Tech - ";
boolean[] itemsChecked ;
//= new boolean[items.length];
private int[] resourceIds = null;
// Constructor
public ListPreferenceMultiSelect(Context context, AttributeSet attrs) {
super(context, attrs);
TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.ListPreferenceMultiSelect);
checkAllKey = a.getString( R.styleable.ListPreferenceMultiSelect_checkAll );
String s = a.getString(R.styleable.ListPreferenceMultiSelect_separator );
if( s != null ) {
separator = s;
} else {
separator = DEFAULT_SEPARATOR;
}
// Initialize the array of boolean to the same size as number of entries
mClickedDialogEntryIndices = new boolean[getEntries().length];
}
@Override
public void setEntries(CharSequence[] entries) {
super.setEntries(entries);
// Initialize the array of boolean to the same size as number of entries
mClickedDialogEntryIndices = new boolean[entries.length];
itemsChecked = new boolean[entries.length];
}
public ListPreferenceMultiSelect(Context context) {
this(context, null);
}
@Override
protected void onPrepareDialogBuilder(Builder builder) {
final CharSequence[] entries = getEntries();
CharSequence[] 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");
}
restoreCheckedEntries();
builder.setMultiChoiceItems(entries, mClickedDialogEntryIndices,
new DialogInterface.OnMultiChoiceClickListener() {
public void onClick(DialogInterface dialog, int which, boolean val) {
if( isCheckAllValue( which ) == true ) {
checkAll( dialog, val );
}
mClickedDialogEntryIndices[which] = val;
/* for (int i = 0; i < entries.length; i++) {
if (itemsChecked[i]) {
selectedTech=selectedTech+entries[i]+" ";
itemsChecked[i]=false;
Toast.makeText(getContext(), ""+selectedTech, 9).show();
}
}*/
//
}
});
}
private boolean isCheckAllValue( int which ){
final CharSequence[] entryValues = getEntryValues();
if(checkAllKey != null) {
return entryValues[which].equals(checkAllKey);
}
return false;
}
private void checkAll( DialogInterface dialog, boolean val ) {
ListView lv = ((AlertDialog) dialog).getListView();
int size = lv.getCount();
for(int i = 0; i < size; i++) {
lv.setItemChecked(i, val);
mClickedDialogEntryIndices[i] = val;
}
}
public String[] parseStoredValue(CharSequence val) {
if ( "".equals(val) ) {
return null;
}
else {
return ((String)val).split(separator);
}
}
private void restoreCheckedEntries() {
CharSequence[] entryValues = getEntryValues();
// Explode the string read in sharedpreferences
String[] vals = parseStoredValue(getValue());
if ( vals != null ) {
List<string> valuesList = Arrays.asList(vals);
// for ( int j=0; j<vals.length;>// TODO: Check why the trimming... Can there be some random spaces added somehow? What if we want a value with trailing spaces, is that an issue?
// String val = vals[j].trim();
for ( int i=0; i<entryvalues.length;> CharSequence entry = entryValues[i];
if ( valuesList.contains(entry) ) {
mClickedDialogEntryIndices[i] = true;
}
}
// }
}
}
@Override
protected void onDialogClosed(boolean positiveResult) {
// super.onDialogClosed(positiveResult);
ArrayList<string> values = new ArrayList<string>();
CharSequence[] entryValues = getEntryValues();
if (positiveResult && entryValues != null) {
for ( int i=0; i<entryvalues.length;> if ( mClickedDialogEntryIndices[i] == true ) {
// Don't save the state of check all option - if any
String val = (String) entryValues[i];
if( checkAllKey == null || (val.equals(checkAllKey) == false) ) {
values.add(val);
Toast.makeText(getContext(), ""+values, 9).show();
}
}
}
if (callChangeListener(values)) {
setValue(join(values, separator));
}
}
}
// Credits to kurellajunior on this post http://snippets.dzone.com/posts/show/91
protected static String join( Iterable< ? extends Object > pColl, String separator )
{
Iterator< ? extends Object > oIter;
if ( pColl == null || ( !( oIter = pColl.iterator() ).hasNext() ) )
return "";
StringBuilder oBuilder = new StringBuilder( String.valueOf( oIter.next() ) );
while ( oIter.hasNext() )
oBuilder.append( separator ).append( oIter.next() );
return oBuilder.toString();
}
// TODO: Would like to keep this static but separator then needs to be put in by hand or use default separator "OV=I=XseparatorX=I=VO"...
public static boolean contains( String straw, String haystack, String separator ){
if( separator == null ) {
separator = DEFAULT_SEPARATOR;
}
String[] vals = haystack.split(separator);
for( int i=0; i<vals.length;> if(vals[i].equals(straw)){
return true;
}
}
return false;
}
}
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