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上一节我们介绍了GSON和Volley，用GSON对返回的数据进行了初步解析，这一节我们更进一步，讨论一下如何实现英文词典。首先把JSON数据的样式再看一下：
下面创建bean，这些都和上一节一样：
第一个bean:
[java] view
plaincopy
package org.lxh.demo;
import java.util.List;
public class Status1 {
private int errNum;
private String errMsg;
RetData2 retData;//保证变量名与返回JSON的标签名一致，注意！！！！！！！！
@Override
public String toString() {
return "Status [errNum=" + errNum + ", errMsg=" + errMsg + ", retData="
+ retData + "]";
}
public int getErrNum() {
return errNum;
}
public void setErrNum(int errNum) {
this.errNum = errNum;
}
public String getErrMsg() {
return errMsg;
}
public void setErrMsg(String errMsg) {
this.errMsg = errMsg;
}
public RetData2 getRetData() {
return retData;
}
public void setRetData(RetData2 retData) {
this.retData = retData;
}
}
第二个bean:
[java] view
plaincopy
package org.lxh.demo;
import java.util.List;
public class RetData2 {
private String from;
private String to;
DictResult3 dict_result;
public String getFrom() {
return from;
}
public void setFrom(String from) {
this.from = from;
}
public String getTo() {
return to;
}
public void setTo(String to) {
this.to = to;
}
public DictResult3 getDictResult() {
return dict_result;
}
public void setDictResult(DictResult3 dictResult) {
this.dict_result = dictResult;
}
@Override
public String toString() {
return "RetData [from=" + from + ", to=" + to + ", dictResult="
+ dict_result + "]";
}
}
第3个bean：
[java] view
plaincopy
package org.lxh.demo;
import java.util.List;
public class DictResult3 {
private String word_name;
private List<Symbols> symbols;
public String getWord_name() {
return word_name;
}
public void setWord_name(String word_name) {
this.word_name = word_name;
}
public List<Symbols> getSymbols() {
return symbols;
}
public void setSymbols(List<Symbols> symbols) {
this.symbols = symbols;
}
@Override
public String toString() {
return "DictResult [word_name=" + word_name + ", symbols=" + symbols
+ "]";
} }
第4个bean:
[java] view
plaincopy
package org.lxh.demo;
import java.util.List;
public class Symbols {
private String ph_am;
private String ph_en;
private List<Parts> parts;
public String getPh_am() {
return ph_am;
}
public void setPh_am(String ph_am) {
this.ph_am = ph_am;
}
public String getPh_en() {
return ph_en;
}
public void setPh_en(String ph_en) {
this.ph_en = ph_en;
}
public List<Parts> getParts() {
return parts;
}
public void setParts(List<Parts> parts) {
this.parts = parts;
}
@Override
public String toString() {
return "Symbols [ph_am=" + ph_am + ", ph_en=" + ph_en + ", parts="
+ parts + "]";
} }
第5个：
[java] view
plaincopy
package org.lxh.demo;
import java.util.Arrays;
import java.util.List;
public class Parts {
private String part;
public String getParts() {
return part;
}
public void setParts(String parts) {
this.part = parts;
}
public String[] getMeans() {
return means;
}
public void setMeans(String[] means) {
this.means = means;
}
@Override
public String toString() {
return "Parts [parts=" + part + ", means=" + Arrays.toString(means)
+ "]";
}
String[] means;
}
所需要的jar包也和上一节一样，可以参考上一节，我们主要讨论一下MainActivity.java程序：
package org.lxh.demo;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.List;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;
import com.google.gson.Gson;
public class MainActivity extends Activity {
private Button tojson;
RequestQueue mQueue;
StringRequest stringRequest;
Gson gson;
String str;
private TextView textView;
private EditText editText;
String string = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
textView = (TextView) findViewById(R.id.text);
editText = (EditText) findViewById(R.id.edit);
tojson = (Button) findViewById(R.id.btn);
gson = new Gson();
mQueue = Volley.newRequestQueue(MainActivity.this);
tojson.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
string = editText.getText().toString();
String requestUrl = getRequestUrl(string);
stringRequest = new StringRequest(requestUrl,
new Response.Listener<String>() {
public void onResponse(String response) {
Log.d("TAG", response);
System.out.println("response=" + response);
Status1 status = gson.fromJson(response,
Status1.class);
StringBuffer buffer = new StringBuffer();// 保存所用字符串
RetData2 retData2 = status.getRetData();// 第二个对象的获取
System.out.println("from=" + retData2.getFrom());
DictResult3 dictResult3;
dictResult3 = retData2.getDictResult();// 第三个对象的获取
buffer.append("单词："
+ dictResult3.getWord_name() + "n");
System.out.println("word_name="
+ dictResult3.getWord_name());
List<Symbols4> symbols4s = dictResult3
.getSymbols();// 第四个是对象数组哦，获取对象数组
buffer.append("音标"
+ symbols4s.get(0).getPh_en() + "n");// symbols4s.get(0)用于获取第一个对象
List<Parts> parts = symbols4s.get(0).getParts();// 同理，最后一个也是对象数组
for (int i = 0; i < parts.size(); i++) {
buffer.append("part:"
+ parts.get(i).getParts()// parts.get(i)获取对象List中的各个对象
+ "n");
buffer.append("词义：");
for (int j = 0; j < parts.get(i).getMeans().length; j++) {
String[] aStrings = parts.get(i)
.getMeans();
buffer.append(aStrings[j]);
}
buffer.append("n");
}
textView.setText(buffer);
}
}, new Response.ErrorListener() {
public void onErrorResponse(VolleyError error) {
Log.e("TAG", error.getMessage(), error);
}
});
mQueue.add(stringRequest);
}
});
}
private String getRequestUrl(String word) {
String url = null;
if (word != null) {
url = "http://apistore.baidu.com/microservice/dictionary?query="
+ word + "&from=en&to=zh";
}
return url;
}
}
运行实例：
以上实例只是展示如何使用，有很多Bug有待完善，大家可以自行改善，也可以发挥你的能力，做成一部真正的字典app。
源码下载地址：http://download.csdn.net/detail/yayun0516/8716107
我的应用下载地址：
http://openbox.mobilem.360.cn/index/d/sid/2966005
http://android.myapp.com/myapp/detail.htm?apkName=com.yayun.gitlearning
欢迎下载，有问题多交流！(喜欢的请关注我，谢谢！)