android 新浪微博客户端的表情功能的实现，flutter教程pdf

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)

Java代码  

public void getFriendList() throws Exception {

BlogReleaseServiceImpl service = new BlogReleaseServiceImpl();

List 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();

}

public void getFriendList() throws Exception {

BlogReleaseServiceImpl service = new BlogReleaseServiceImpl();

List 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  

[嘻嘻]

face

http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/c2/tooth.gif

false

true

0

lt;/emotion>

[嘻嘻]

face

http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/c2/tooth.gif

false

true

0

3.2 储存在一个Emotion.java里。Emotion.java代码如下:

Java代码  

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;

}

}

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  

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 list;

private Emotions emotions;

private ResponseResult responseresult;

private String tag = null;//正在解析的元素

public List getEmotionsList(){

return list;

}

@Override

public void characters(char[] ch, int start, int length)

throws SAXException {

if (tag != null) {

String textarea = new String(ch,start,length);

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);

}

}

}

@Override

public void enddocument() throws SAXException {

super.enddocument();

}

@Override

public 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;

}

}

@Override

public void startdocument() throws SAXException {

list = new ArrayList();

}

@Override

public 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;

}

}

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 list;

private Emotions emotions;

private ResponseResult responseresult;

private String tag = null;//正在解析的元素

public List getEmotionsList(){

return list;

}

@Override

public 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);

}

}

}

@Override

public void enddocument() throws SAXException {

super.enddocument();

}

@Override

public 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;

}

}

@Override

public void startdocument() throws SAXException {

list = new ArrayList();

}

@Override

public 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  

public List 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Handler

reader.setContentHandler(handler);

//指定文件，进行解析

reader.parse(new InputSource(new StringReader(result)));   
quals(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  

public List 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Handler

reader.setContentHandler(handler);

//指定文件，进行解析

reader.parse(new InputSource(new StringReader(result)));