Android 自定义Combobox
自定义Combobox
public class Combobox extends TextView {
private Context context;
private Dialog mDialog;
private List<String> mItems;
private String title ;
private TextView titleText;
private List<CodenamePair> pairs;
private boolean isMultipleChoice;
private HashMap<Integer, String> choiceItemsMap;
private boolean argIsList;
private int position = -1;
private List<Integer> posList;
private CboxDialogArrayAdapter adapter;
public void setDialogItems(ArrayList<String> mItems) {
this.mItems = mItems;
argIsList = false;
}
public void setDialogItems(String[] mItems) {
this.mItems = Arrays.asList(mItems);
argIsList = false;
}
public void setDialogItems(List<CodenamePair> cnPairs) {
this.pairs = cnPairs;
List<String> items = null;
argIsList = true;
if(cnPairs != null ){
int len = cnPairs.size();
items = new ArrayList<String>();
for (int i = 0; i < len; i++){
items.add(cnPairs.get(i).getName());
}
}
this.mItems = items;
}
public Combobox(Context context, ArrayList<String> items) {
super(context);
init(context, null);
this.mItems = items;
}
public Combobox(Context context, AttributeSet attrs){
super(context, attrs);
init(context, attrs);
}
private void init(Context context, AttributeSet attrs){
this.isMultipleChoice = context.obtainStyledAttributes(attrs, R.styleable.Combobox).getBoolean(R.styleable.Combobox_isMultipleChoice, false);
this.context = (context == null ? getContext() :context);
this.setBackgroundResource(android.R.drawable.editbox_background_normal);
//Combobox的向下的图标
Drawable drawable = getResources().getDrawable(R.drawable.dropdown);
drawable.setBounds(0, 0, drawable.getMinimumWidth(), drawable.getMinimumHeight());
this.setCompoundDrawables(null, null, drawable, null);
this.setOnClickListener(clickListener);
titleText = (TextView) LayoutInflater.from(context).inflate(R.layout.layout_combobox_dialog_title, null);
}
OnClickListener clickListener = new OnClickListener() {
@Override
public void onClick(View v) {
if(choiceItemsMap == null)
choiceItemsMap = new HashMap<Integer, String>();
showDialog();
}
};
List<Integer> selPostion = new ArrayList<Integer>();
private boolean showDialog() {
selPostion.clear();
if(position >= 0){
selPostion.add(position);
}else if(posList != null && posList.size() > 0){
selPostion.addAll(posList);
}
if(mDialog == null){
mDialog = createDialog();
if (mDialog == null) {
return false;
}
}
if(posList == null)
posList = new ArrayList<Integer>();
mDialog.show();
if(mItems.size() > 5){
mDialog.getWindow().setLayout(mDialog.getWindow().getAttributes().width, 500);
}else{
mDialog.getWindow().setLayout(mDialog.getWindow().getAttributes().width, WindowManager.LayoutParams.WRAP_CONTENT);
}
return true;
}
private Dialog createDialog() {
if(mItems == null){return null;}
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setTitle(title);
adapter = new CboxDialogArrayAdapter(context, mItems, selPostion, isMultipleChoice);
builder.setAdapter(adapter, itemClickListener);
builder.setCancelable(true);
AlertDialog dialog = builder.create();
dialog.setCustomTitle(titleText);
if(isMultipleChoice){
dialog.setButton(DialogInterface.BUTTON_POSITIVE, context.getString(R.string.combobox_button_positive), new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
StringBuffer text = new StringBuffer();
if(choiceItemsMap != null && choiceItemsMap.size() > 0){
Iterator<String> iterator = choiceItemsMap.values().iterator();
while (iterator.hasNext()){
if(text.length() != 0) text.append(",");
text.append(iterator.next());
}
}
setText(text);
setAutoCloseDialog(dialog, true);
dialog.cancel();
}
});
dialog.setButton(DialogInterface.BUTTON_NEGATIVE, context.getString(R.string.combobox_button_negative), new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
setAutoCloseDialog(dialog, true);
dialog.cancel();
}
});
}
return dialog;
}
private DialogInterface.OnClickListener itemClickListener = new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int pos) {
setAutoCloseDialog(dialog, false);
String content = mItems.get(pos);
CheckedTextView textView = (CheckedTextView) adapter.getItem(pos);
if(isMultipleChoice){
boolean isChecked = !posList.contains(new Integer(pos));
if(isChecked && !choiceItemsMap.containsKey(pos)){
choiceItemsMap.put(pos, content);
posList.add(pos);
textView.setChecked(true);
}else if(choiceItemsMap.containsKey(pos)){
choiceItemsMap.remove(pos);
posList.remove(new Integer(pos));
textView.setChecked(false);
}
}else{
textView.setChecked(true);
position = pos;
setText(content);
setAutoCloseDialog(dialog, true);
dialog.cancel();
}
}
};
private void setAutoCloseDialog(DialogInterface dialog, boolean isClose){
try {
Field field = dialog.getClass().getSuperclass().getDeclaredField("mShowing");
field.setAccessible(true);
field.set(dialog, isClose);
((AlertDialog)dialog).setCancelable(true);
} catch (NoSuchFieldException e) {
Log.e("NoSuchFieldException", e.getMessage());
} catch (IllegalAccessException e) {
Log.e("IllegalAccessException", e.getMessage());
}
}
public List<CodenamePair> getSelectedItems(){
if(!isMultipleChoice) return null;
List<CodenamePair> selList = new ArrayList<CodenamePair>();
if(argIsList && posList != null){
for (int i = 0; i < posList.size(); i++){
selList.add(pairs.get(posList.get(i)));
}
}else {
if(choiceItemsMap != null){
Iterator<String> iterator = choiceItemsMap.values().iterator();
CodenamePair pair = null;
while (iterator.hasNext()){
pair = new CodenamePair();
pair.setName(iterator.next());
selList.add(pair);
}
}
}
return selList;
}
public void setSelectedItems(List<CodenamePair> selItems){
if((selItems == null || selItems.size() <= 0) || !isMultipleChoice || (mItems == null && pairs == null)) return;
if(choiceItemsMap == null)
choiceItemsMap = new HashMap<Integer, String>();
int size = argIsList ? pairs.size() : mItems.size();
for (int i = 0; i < size; i++){
String code = null;
String name = null;
if(argIsList){
code = pairs.get(i).getCode();
name = pairs.get(i).getName();
}else{
name = mItems.get(i);
}
for (CodenamePair pair : selItems){
if ((StringUtil.isNotBlank( code ) && code.equals(pair.getCode())) ||
(!StringUtil.isNotBlank(pair.getCode()) && name.equals(pair.getName()))){
if(posList == null)
posList = new ArrayList<Integer>();
posList.add(new Integer(i));
choiceItemsMap.put(new Integer(i), name);
}
}
}
if(posList != null && posList.size() > 0){
StringBuffer text = new StringBuffer();
Iterator<String> iterator = choiceItemsMap.values().iterator();
while (iterator.hasNext()){
if(text.length() != 0) text.append(",");
text.append(iterator.next());
}
setText(text);
}
}
public CodenamePair getSelectedItem(){
if(isMultipleChoice || position < 0) return null;
CodenamePair pair = null;
if(argIsList){
pair = pairs.get(position);
}else{
pair = new CodenamePair();
pair.setName(mItems.get(position));
}
return pair;
}
public void setSelectedItem(CodenamePair pair){
if(pair == null || isMultipleChoice || (mItems == null && pairs == null)) return;
int size = argIsList ? pairs.size() : mItems.size();
for (int i = 0; i < size; i++){
String code = null;
String name = null;
if(argIsList && pairs != null){
CodenamePair cnPair = pairs.get(i);
code= cnPair.getCode();
name = cnPair.getName();
}else if(mItems != null){
name = mItems.get(i);
}
if (StringUtil.isNotBlank(code) && code.equals(pair.getCode())){
position = i;
setText(name);
break;
}else if(!StringUtil.isNotBlank(pair.getCode()) && name.equals(pair.getName())){
position = i;
setText(name);
break;
}
}
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
if(titleText != null){
titleText.setText(title);
}
this.title = title;
}
public void clear(){
position = -1;
if(posList != null) posList.clear();
if(choiceItemsMap != null) choiceItemsMap.clear();
setText(null);
}
}
CodenamePair类
public class CodenamePair {
private String code;
private String name;
public CodenamePair(){
disStatus = 2;
extraData = new HashMap<String,String>();
}
public CodenamePair(String code,String name){
disStatus = 2;
extraData = new HashMap<String,String>();
this.code = code;
this.name = name;
}
public String getCode(){
return code;
}
public String setCode(String code){
return this.code=code;
}
public String getName(){
return name;
}
public String setName(String name){
return this.name=name;
}
}
attrs.xml文件，定义isMultipleChoice属性，Combobox是否多选
<declare-styleable name="Combobox"> <attr name="isMultipleChoice" format="boolean"></attr> </declare-styleable>
Combobox Item 的样式文件 layout_combobox_dialog_item.xml
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content"> <CheckedTextView android:visibility="gone" android:id="@+id/combobox_dialog_item_radioButton" android:layout_width="match_parent" android:layout_height="wrap_content" android:minHeight="?android:attr/listPreferredItemHeight" android:textAppearance="?android:attr/textAppearanceMedium" android:textColor="?android:attr/textColorAlertDialogListItem" android:gravity="center_vertical" android:paddingLeft="18dp" android:paddingEnd="7dp" android:checkMark="?android:attr/listChoiceIndicatorSingle" android:ellipsize="marquee"/> <CheckedTextView android:visibility="visible" android:id="@+id/combobox_dialog_item_checkBox" android:layout_width="match_parent" android:layout_height="wrap_content" android:minHeight="?android:attr/listPreferredItemHeight" android:textAppearance="?android:attr/textAppearanceMedium" android:textColor="?android:attr/textColorAlertDialogListItem" android:gravity="center_vertical" android:paddingLeft="18dp" android:paddingEnd="7dp" android:checkMark="?android:attr/listChoiceIndicatorMultiple" android:ellipsize="marquee"/> </RelativeLayout>
Combobox tittle 样式文件layout_combobox_dialog_title.xml
<?xml version="1.0" encoding="utf-8"?> <TextView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" android:paddingBottom="15dp" android:paddingTop="15dp" android:paddingLeft="10dp" android:textColor="@color/black" android:background="@color/gray" android:textAppearance="?android:attr/textAppearanceLarge" android:text="combobox_title_text" android:id="@+id/combobox_title" />