[置顶] android 新浪微博客户端的表情功能的实现
最近在搞android 新浪微博客户端,有一些心得分享
弄android客户端表情功能可以用以下思路
1.首页把新浪的表情下载到本地一文件夹种,表情图片的命名要用新浪微博表情原来的命名
比如 新浪的害羞表情是shame.gif 那么你在本地也得命名为shame.gif,命名相同主要是为了能够匹配表情对应的code.
2.把本地的表情都放进android的资源文件里----drawable下面
3.访问新浪的表情接口(新浪返回的数据类型有json和xml两种,本人用xml),把返回的信息,利用xml解析器解析出来的信息储存在一个Emotion.java的bean里,这样就可以根据Emotion.java的code找到一一对应的资源表情图片了
4.实现一个可以让用户选择的表情界面,本人用GridView实现
5.实现点击GridView的每一个item,处理根据item的index查找对应的表情code,然后再把code利用正则把code转换为相对应的表情图片,最后表情插入EditText进行发送。
下面是具体的实现过程
1.把新浪表情图片下载到本地的实现如下:(这个可以建一个java工程进行下载)
- publicvoidgetFriendList()throwsException{
- BlogReleaseServiceImplservice=newBlogReleaseServiceImpl();
- List<Emotions>list=service.getEmotion();
- for(Emotionsemotions:list){
- Stringpath=emotions.getUrl();
- Stringfilename=path.substring(path.lastIndexOf("/")+1,path.length());
- URLurl=newURL(path);
- HttpURLConnectionconn=(HttpURLConnection)url.openConnection();
- conn.setRequestMethod("GET");
- conn.setReadTimeout(5*1000);
- if(conn.getResponseCode()==200){
- InputStreamis=conn.getInputStream();
- byte[]data=readStream(is);
- Filefile=newFile("f:\\sina_images\\"+filename);
- FileOutputStreamfs=newFileOutputStream(file);
- fs.write(data);
- fs.close();
- }else{
- System.out.println("请求失败");
- }
- }
- }
- publicbyte[]readStream(InputStreamis)throwsException{
- ByteArrayOutputStreamos=newByteArrayOutputStream();
- byte[]buffer=newbyte[2048];
- intlen=0;
- while((len=is.read(buffer))!=-1){
- os.write(buffer,0,len);
- }
- is.close();
- returnos.toByteArray();
- }
public void getFriendList() throws Exception {BlogReleaseServiceImpl service = new BlogReleaseServiceImpl();List<Emotions> list = service.getEmotion();for (Emotions emotions : list) {String path = emotions.getUrl();String filename = path.substring(path.lastIndexOf("/") + 1,path.length());URL url = new URL(path);HttpURLConnection conn = (HttpURLConnection)url.openConnection();conn.setRequestMethod("GET");conn.setReadTimeout(5 * 1000);if(conn.getResponseCode() == 200){InputStream is = conn.getInputStream();byte[] data = readStream(is);File file = new File("f: \\sina_images\\" + filename);FileOutputStream fs = new FileOutputStream(file);fs.write(data);fs.close();}else{System.out.println("请求失败");}}}public byte[] readStream(InputStream is) throws Exception {ByteArrayOutputStream os = new ByteArrayOutputStream();byte[] buffer = new byte[2048];int len = 0;while((len = is.read(buffer)) != -1){os.write(buffer,0,len);}is.close();return os.toByteArray();}
2:把本地的表情都放进android的资源文件里----drawable下面(这个就不用多说了,直接选取所有文件复制就行了)
3:
3.1访问新浪的表情接口,把返回的信息如下:
Xml代码
- <emotion>
- <phrase>[嘻嘻]</phrase>
- <type>face</type>
- <url>http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/c2/tooth.gif
- </url>
- <is_hot>false</is_hot>
- <is_common>true</is_common>
- <order_number>0</order_number>
- <category></category>
- lt;/emotion>
<emotion><phrase>[嘻嘻]</phrase><type>face</type><url>http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/c2/tooth.gif</url><is_hot>false</is_hot><is_common>true</is_common><order_number>0</order_number><category></category></emotion>
3.2储存在一个Emotion.java里。Emotion.java代码如下:
Java代码- packagecom.uim.microblog.model;
- importjava.io.Serializable;
- publicclassEmotionsimplementsSerializable{
- /**
- *
- */
- privatestaticfinallongserialVersionUID=1L;
- privateStringphrase;//表情使用的替代文字
- privateStringtype;
- privateStringurl;//表情图片存放的位置
- privateStringisHot;//是否为热门表情
- privateStringisCommon;//是否属于通用
- privateStringorderNumber;//该表情在系统中的排序号码
- privateStringcategory;//表情分类
- privateStringimageName;//表情名称
- publicStringgetImageName(){
- returnimageName;
- }
- publicvoidsetImageName(StringimageName){
- this.imageName=imageName;
- }
- publicStringgetPhrase(){
- returnphrase;
- }
- publicvoidsetPhrase(Stringphrase){
- this.phrase=phrase;
- }
- publicStringgetType(){
- returntype;
- }
- publicvoidsetType(Stringtype){
- this.type=type;
- }
- publicStringgetUrl(){
- returnurl;
- }
- publicvoidsetUrl(Stringurl){
- this.url=url;
- }
- publicStringgetIsHot(){
- returnisHot;
- }
- publicvoidsetIsHot(StringisHot){
- this.isHot=isHot;
- }
- publicStringgetIsCommon(){
- returnisCommon;
- }
- publicvoidsetIsCommon(StringisCommon){
- this.isCommon=isCommon;
- }
- publicStringgetOrderNumber(){
- returnorderNumber;
- }
- publicvoidsetOrderNumber(StringorderNumber){
- this.orderNumber=orderNumber;
- }
- publicStringgetCategory(){
- returncategory;
- }
- publicvoidsetCategory(Stringcategory){
- this.category=category;
- }
- }
package com.uim.microblog.model;import java.io.Serializable;public class Emotions implements Serializable {/** * */private static final long serialVersionUID = 1L;private String phrase;//表情使用的替代文字private String type;private String url;//表情图片存放的位置private String isHot;//是否为热门表情private String isCommon;//是否属于通用private String orderNumber;//该表情在系统中的排序号码private String category;//表情分类private String imageName;//表情名称public String getImageName() {return imageName;}public void setImageName(String imageName) {this.imageName = imageName;}public String getPhrase() {return phrase;}public void setPhrase(String phrase) {this.phrase = phrase;}public String getType() {return type;}public void setType(String type) {this.type = type;}public String getUrl() {return url;}public void setUrl(String url) {this.url = url;}public String getIsHot() {return isHot;}public void setIsHot(String isHot) {this.isHot = isHot;}public String getIsCommon() {return isCommon;}public void setIsCommon(String isCommon) {this.isCommon = isCommon;}public String getOrderNumber() {return orderNumber;}public void setOrderNumber(String orderNumber) {this.orderNumber = orderNumber;}public String getCategory() {return category;}public void setCategory(String category) {this.category = category;}}
3.3xm sax解析l的handler如下:
Java代码- packagecom.uim.microblog.net.handler;
- importjava.util.ArrayList;
- importjava.util.List;
- importorg.xml.sax.Attributes;
- importorg.xml.sax.SAXException;
- importorg.xml.sax.helpers.DefaultHandler;
- importcom.uim.microblog.model.Emotions;
- importcom.uim.microblog.model.ResponseResult;
- publicclassBlogEmotionsHandlerextendsDefaultHandler{
- privateList<Emotions>list;
- privateEmotionsemotions;
- privateResponseResultresponseresult;
- privateStringtag=null;//正在解析的元素
- publicList<Emotions>getEmotionsList(){
- returnlist;
- }
- @Override
- publicvoidcharacters(char[]ch,intstart,intlength)
- throwsSAXException{
- if(tag!=null){
- StringtextArea=newString(ch,start,length);
- /**开始解析表情数据*/
- if("phrase".equals(tag)){
- emotions.setPhrase(textArea);
- }elseif("type".equals(tag)){
- emotions.setType(textArea);
- }elseif("url".equals(tag)){
- try{
- emotions.setUrl(textArea);
- StringimageName=textArea.substring(textArea.lastIndexOf("/")+1,textArea.length()-4);
- emotions.setImageName(imageName);
- }catch(Exceptione){
- e.printStackTrace();
- }
- }elseif("is_hot".equals(tag)){
- emotions.setIsHot(textArea);
- }elseif("is_common".equals(tag)){
- emotions.setIsCommon(textArea);
- }elseif("order_number".equals(tag)){
- emotions.setOrderNumber(textArea);
- }elseif("category".equals(tag)){
- emotions.setCategory(textArea);
- }elseif("retn".equals(tag)){
- responseresult.setRetn(textArea);
- }elseif("desc".equals(tag)){
- responseresult.setDesc(textArea);
- }
- }
- }
- @Override
- publicvoidendDocument()throwsSAXException{
- super.endDocument();
- }
- @Override
- publicvoidendElement(Stringuri,StringlocalName,StringqName)
- throwsSAXException{
- tag=null;
- if("mb".equals(localName)){
- }elseif("emotions".equals(localName)){
- responseresult=null;
- }elseif("emotion".equals(localName)){
- list.add(emotions);
- emotions=null;
- }
- }
- @Override
- publicvoidstartDocument()throwsSAXException{
- list=newArrayList<Emotions>();
- }
- @Override
- publicvoidstartElement(Stringuri,StringlocalName,StringqName,
- Attributesattributes)throwsSAXException{
- if("mb".equals(localName)){
- responseresult=newResponseResult();
- }elseif("emotions".equals(localName)){
- }elseif("emotion".equals(localName)){
- emotions=newEmotions();
- }
- tag=localName;
- }
- }
package com.uim.microblog.net.handler;import java.util.ArrayList;import java.util.List;import org.xml.sax.Attributes;import org.xml.sax.SAXException;import org.xml.sax.helpers.DefaultHandler;import com.uim.microblog.model.Emotions;import com.uim.microblog.model.ResponseResult;public class BlogEmotionsHandler extends DefaultHandler {private List<Emotions> list;private Emotions emotions;private ResponseResult responseresult;private String tag = null;//正在解析的元素public List<Emotions> getEmotionsList(){return list;}@Overridepublic void characters(char[] ch, int start, int length)throws SAXException {if (tag != null) {String textArea = new String(ch,start,length);/**开始解析表情数据*/if ("phrase".equals(tag)) {emotions.setPhrase(textArea);} else if ("type".equals(tag)) {emotions.setType(textArea);} else if ("url".equals(tag)) {try {emotions.setUrl(textArea);String imageName = textArea.substring(textArea.lastIndexOf("/") + 1,textArea.length() - 4);emotions.setImageName(imageName);} catch (Exception e) {e.printStackTrace();}} else if ("is_hot".equals(tag)) {emotions.setIsHot(textArea);} else if ("is_common".equals(tag)) {emotions.setIsCommon(textArea);} else if ("order_number".equals(tag)) {emotions.setOrderNumber(textArea);} else if ("category".equals(tag)) {emotions.setCategory(textArea);} else if ("retn".equals(tag)) {responseresult.setRetn(textArea);} else if ("desc".equals(tag)) {responseresult.setDesc(textArea);}}}@Overridepublic void endDocument() throws SAXException {super.endDocument();}@Overridepublic void endElement(String uri, String localName, String qName)throws SAXException {tag = null;if ("mb".equals(localName)) {} else if ("emotions".equals(localName)) {responseresult =null;} else if ("emotion".equals(localName)) {list.add(emotions);emotions = null;} }@Overridepublic void startDocument() throws SAXException {list = new ArrayList<Emotions>();}@Overridepublic void startElement(String uri, String localName, String qName,Attributes attributes) throws SAXException {if ("mb".equals(localName)) {responseresult = new ResponseResult();} else if ("emotions".equals(localName)) {} else if ("emotion".equals(localName)) {emotions = new Emotions();} tag = localName;}}
3.4sax解析
Java代码- publicList<Emotions>getEmotion(){
- BlogGetDatagetdata=newBlogGetData();
- Stringresult=getdata.blogEmotionsServlet();
- try{
- //生成SAX解析对象
- parser=SAXParserFactory.newInstance().newSAXParser();
- //生成xml读取器
- reader=parser.getXMLReader();
- BlogEmotionsHandlerhandler=newBlogEmotionsHandler();
- //设置Handler
- reader.setContentHandler(handler);
- //指定文件,进行解析
- reader.parse(newInputSource(newStringReader(result)));
- //获取List<Emotions>
- emotionList=handler.getEmotionsList();
- }catch(ParserConfigurationExceptione){
- e.printStackTrace();
- }catch(SAXExceptione){
- e.printStackTrace();
- }catch(IOExceptione){
- e.printStackTrace();
- }
- returnemotionList;
- }
public List<Emotions> getEmotion(){BlogGetData getdata = new BlogGetData();String result = getdata.blogEmotionsServlet();try {//生成SAX解析对象parser = SAXParserFactory.newInstance().newSAXParser();//生成xml读取器reader = parser.getXMLReader();BlogEmotionsHandler handler = new BlogEmotionsHandler();//设置Handlerreader.setContentHandler(handler);//指定文件,进行解析reader.parse(new InputSource(new StringReader(result)));//获取 List<Emotions>emotionList = handler.getEmotionsList();} catch (ParserConfigurationException e) {e.printStackTrace();} catch (SAXException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}return emotionList;}
4:
4.1实现表情选择器---GridView
Xml代码- <GridView
- android:id="@+id/blog_sendmsg_gvemotion"
- android:layout_width="fill_parent"
- android:layout_height="150sp"
- android:scrollbars="vertical"
- android:numColumns="auto_fit"
- android:verticalSpacing="15dp"
- android:background="@color/blog_list_back"
- android:stretchMode="columnWidth"
- android:gravity="center"
- android:visibility="gone"
- android:columnWidth="40dp">
- </GridView>
<GridViewandroid:id="@+id/blog_sendmsg_gvemotion"android:layout_width="fill_parent"android:layout_height="150sp"android:scrollbars="vertical"android:numColumns="auto_fit"android:verticalSpacing="15dp"android:background="@color/blog_list_back"android:stretchMode="columnWidth"android:gravity="center"android:visibility="gone"android:columnWidth="40dp"></GridView>
4.2 GridView的item-----gridview_emotion_item.xml
Xml代码- <?xmlversion="1.0"encoding="utf-8"?>
- <LinearLayout
- xmlns:android="http://schemas.android.com/apk/res/android"
- android:layout_width="fill_parent"
- android:layout_height="fill_parent">
- <ImageView
- android:id="@+id/blog_sendmsg_emotion"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:layout_weight="50"
- android:layout_gravity="center">
- </ImageView>
- </LinearLayout>
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent"> <ImageView android:id="@+id/blog_sendmsg_emotion" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="50" android:layout_gravity="center"> </ImageView></LinearLayout>
4.3代码加载表情图片到GridView进行显示
Java代码- publicvoidaddexpression(Viewview){
- if(expressionGriView.getVisibility()==View.GONE){
- expressionGriView.setVisibility(View.VISIBLE);
- emotionList=BlogHomeActivity.emotions;
- ArrayList<HashMap<String,Object>>lstImageItem=newArrayList<HashMap<String,Object>>();
- for(inti=0;i<70;i++)
- {
- emtions=emotionList.get(i);
- if(emtions!=null){
- HashMap<String,Object>map=newHashMap<String,Object>();
- Fieldf;
- try{
- f=(Field)R.drawable.class.getDeclaredField(emtions.getImageName());
- intj=f.getInt(R.drawable.class);
- map.put("ItemImage",j);//添加图像资源的ID
- lstImageItem.add(map);
- }catch(SecurityExceptione){
- e.printStackTrace();
- }catch(NoSuchFieldExceptione){
- e.printStackTrace();
- }catch(IllegalArgumentExceptione){
- e.printStackTrace();
- }catch(IllegalAccessExceptione){
- e.printStackTrace();
- }
- }
- }
- //生成适配器的ImageItem<====>动态数组的元素,两者一一对应
- SimpleAdaptersaImageItems=newSimpleAdapter(this,
- lstImageItem,//数据来源
- R.layout.blog_emotion_list,
- //动态数组与ImageItem对应的子项
- newString[]{"ItemImage"},
- //ImageItem的XML文件里面的一个ImageView
- newint[]{R.id.blog_sendmsg_emotion});
- expressionGriView.setAdapter(saImageItems);
- }else{
- expressionGriView.setVisibility(View.GONE);
- }
- }
public void addexpression(View view){if (expressionGriView.getVisibility() == View.GONE) {expressionGriView.setVisibility(View.VISIBLE);emotionList = BlogHomeActivity.emotions;ArrayList<HashMap<String, Object>> lstImageItem = new ArrayList<HashMap<String, Object>>(); for(int i=0;i<70;i++) { emtions = emotionList.get(i); if (emtions != null) { HashMap<String, Object> map = new HashMap<String, Object>(); Field f;try {f = (Field)R.drawable.class.getDeclaredField(emtions.getImageName());int j = f.getInt(R.drawable.class); map.put("ItemImage", j);//添加图像资源的ID lstImageItem.add(map); } catch (SecurityException e) {e.printStackTrace();} catch (NoSuchFieldException e) {e.printStackTrace();}catch (IllegalArgumentException e) {e.printStackTrace();} catch (IllegalAccessException e) {e.printStackTrace();} } } //生成适配器的ImageItem <====> 动态数组的元素,两者一一对应 SimpleAdapter saImageItems = new SimpleAdapter(this, lstImageItem,//数据来源 R.layout.blog_emotion_list, //动态数组与ImageItem对应的子项 new String[] {"ItemImage"}, //ImageItem的XML文件里面的一个ImageView new int[] {R.id.blog_sendmsg_emotion}); expressionGriView.setAdapter(saImageItems); } else {expressionGriView.setVisibility(View.GONE);}}
5:实现点击GridView的每一个item,处理根据item的index查找对应的表情code,然后再把code利用正则把code转换为相对应的表情图片,最后表情插入EditText进行发送
5.1:code转换为图片:
Java代码- publicSpannableStringtxtToImg(Stringcontent){
- SpannableStringss=newSpannableString(content);
- intstarts=0;
- intend=0;
- if(content.indexOf("[",starts)!=-1&&content.indexOf("]",end)!=-1){
- starts=content.indexOf("[",starts);
- end=content.indexOf("]",end);
- Stringphrase=content.substring(starts,end+1);
- StringimageName="";
- List<Emotions>list=BlogHomeActivity.emotions;
- for(Emotionsemotions:list){
- if(emotions.getPhrase().equals(phrase)){
- imageName=emotions.getImageName();
- }
- }
- try{
- Fieldf=(Field)R.drawable.class.getDeclaredField(imageName);
- inti=f.getInt(R.drawable.class);
- Drawabledrawable=BlogSendMsgActivity.this.getResources().getDrawable(i);
- if(drawable!=null){
- drawable.setBounds(0,0,drawable.getIntrinsicWidth(),drawable.getIntrinsicHeight());
- ImageSpanspan=newImageSpan(drawable,ImageSpan.ALIGN_BASELINE);
- ss.setSpan(span,starts,end+1,Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
- }
- }catch(SecurityExceptione){
- e.printStackTrace();
- }catch(NoSuchFieldExceptione){
- e.printStackTrace();
- }catch(IllegalArgumentExceptione){
- e.printStackTrace();
- }catch(IllegalAccessExceptione){
- }
- }
- returnss;
- }
public SpannableString txtToImg(String content){SpannableString ss = new SpannableString(content);int starts = 0;int end = 0;if(content.indexOf("[", starts) != -1 && content.indexOf("]", end) != -1){starts = content.indexOf("[", starts);end = content.indexOf("]", end);String phrase = content.substring(starts,end + 1);String imageName = "";List<Emotions> list = BlogHomeActivity.emotions;for (Emotions emotions : list) {if (emotions.getPhrase().equals(phrase)) {imageName = emotions.getImageName();}}try {Field f = (Field)R.drawable.class.getDeclaredField(imageName);int i= f.getInt(R.drawable.class);Drawable drawable = BlogSendMsgActivity.this.getResources().getDrawable(i); if (drawable != null) {drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight()); ImageSpan span = new ImageSpan(drawable, ImageSpan.ALIGN_BASELINE); ss.setSpan(span, starts,end + 1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); }} catch (SecurityException e) {e.printStackTrace();} catch (NoSuchFieldException e) {e.printStackTrace();} catch (IllegalArgumentException e) {e.printStackTrace();} catch (IllegalAccessException e) {}}return ss;}
5.2:插入EditText
Java代码- emtions=emotionList.get(position);//获取表情bean
- intcursor=etcontent.getSelectionStart();
- etcontent.getText().insert(cursor,txtToImg(emtions.getPhrase()));
emtions = emotionList.get(position);//获取表情bean int cursor = etcontent.getSelectionStart(); etcontent.getText().insert(cursor, txtToImg(emtions.getPhrase()));
写完收工,给个效果图:
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