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