安卓小项目之刀刀狗翻译

学了一阵安卓，想搞个实用的app玩玩。

项目名称：刀刀狗翻译

api源：有道api

界面如下，略简陋

mainactivity

package com.example.zheng.fangyi;
import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.method.ScrollingMovementMethod;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
public class MainActivity extends AppCompatActivity {private EditText input;private TextView result;String rdline=new String();String read=null;@Override
    protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);input = (EditText) findViewById(R.id.input);result = (TextView) findViewById(R.id.result);result.setMovementMethod(ScrollingMovementMethod.getInstance());Button check = (Button) findViewById(R.id.check);try {check.setOnClickListener(new View.OnClickListener() {@Override
                public void onClick(View v) {new AsyncTask<String,Void,Void>(){@Override
                        protected Void doInBackground(String... params) {try {URL url=new URL(params[0]);try {URLConnection conn=url.openConnection();InputStream is=conn.getInputStream();InputStreamReader isr=new InputStreamReader(is,"utf-8");BufferedReader br=new BufferedReader(isr);String line;while((line=br.readLine())!=null){System.out.println(line);rdline+=line;}br.close();isr.close();is.close();} catch (IOException e) {e.printStackTrace();}} catch (MalformedURLException e) {e.printStackTrace();}return null;}}.execute("http://fanyi.youdao.com/openapi.do?keyfrom=zsdlove&key=5668291&type=data&doctype=xml&version=1.1&q="+input.getText());xmlresolve(rdline);//解析xml
                    rdline="";read="";}});}catch (Exception e) {e.printStackTrace();}}public  void xmlresolve(String rdline)//xml解析
    {try {Document document = DocumentHelper.parseText(rdline);org.dom4j.Element root=document.getRootElement();//获取根节点
            //错误捕获==========
            Element errorCode=root.element("errorCode");if(errorCode.getText().equals("20")){Toast.makeText(getApplicationContext(),"要翻译的文本过长",Toast.LENGTH_SHORT);}else if(errorCode.getText().equals("30")){Toast.makeText(getApplicationContext(),"无法进行有效的翻译",Toast.LENGTH_SHORT);}else if(errorCode.getText().equals("40")){Toast.makeText(getApplicationContext(),"不支持的语言类型",Toast.LENGTH_SHORT);}else if(errorCode.getText().equals("50")){Toast.makeText(getApplicationContext(),"无效的key",Toast.LENGTH_SHORT);}else if(errorCode.getText().equals("60")){Toast.makeText(getApplicationContext(),"请输入正确的英文",Toast.LENGTH_SHORT);}//错误捕获finish=================
            else{org.dom4j.Element tnote=root.element("translation");//获取translation节点
            Element pnote=tnote.element("paragraph");//获取paragraph节点
            //===================
            Element basic =root.element("basic");//basic节点
            Element us=basic.element("us-phonetic");//美式音标
            Element uk=basic.element("uk-phonetic");//uk音标
            Element explains=basic.element("explains");//基本释义
            Element ex=explains.element("ex");read="翻译结果："+"\r\n"+"常规翻译："+pnote.getText()+"\r\n"+"美式音标："+us.getText()+"\r\n"+"英式音标："+uk.getText()+"\r\n"+"名词解释："+ex.getText();}} catch (DocumentException e) {e.printStackTrace();}result.setText(read);}
}

activity_main.xml:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.zheng.fangyi.MainActivity"><Button
        android:text="查询"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/check"
        android:layout_below="@+id/input"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_marginTop="12dp" /><TextView
        android:text="翻译结果："
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="67dp"
        android:id="@+id/result"
        android:layout_alignTop="@+id/check"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" /><TextView
        android:text="zsd出品"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="32dp"
        android:id="@+id/textView" /><EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:inputType="textPersonName"
        android:text="请输入"
        android:ems="10"
        android:id="@+id/input"
        android:layout_alignParentTop="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" /></RelativeLayout>

输入hello

查看效果

这里提一下，对于xml返回文件的解析需要用到dom4j.jar包，可以到官网上去下载。引入项目中的libs目录中就可以了，libs目录找不到的原因是目录查看的方式不对