Android笔记（五十三） 利用有道OPENAPI做简单的翻译demo

　　先去 http://fanyi.youdao.com/openapi?path=data-mode 申请开发者key

　　有道api会自动将申请的单词翻译并返回为xml或者json格式，我们所需要做的就是将返回的格式显示到屏幕上即可

MainActivity.java

package cn.lixyz.youdaodictionary;

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;

import org.json.JSONArray;

import org.json.JSONException;

import org.json.JSONObject;

import android.app.Activity;

import android.os.Bundle;

import android.os.Handler;

import android.os.Message;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.EditText;

import android.widget.TextView;

public class MainActivity extends Activity {

    private EditText word;

    private Button submit;

    private TextView translation;

    private String str = "http://fanyi.youdao.com/openapi.do?keyfrom=AndroidHttpTest&key=507293865&type=data&doctype=json&version=1.1&q=";

    String requestStr;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        initView();

        submit.setOnClickListener(new OnClickListener() {

            @Override

            public void onClick(View v) {

                String tmpWord = word.getText().toString().trim();

                requestStr = str + tmpWord;

                new Thread(new Runnable() {

                    @Override

                    public void run() {

                        URL url;

                        try {

                            url = new URL(requestStr);

                            URLConnection connection = url.openConnection();

                            InputStream is = connection.getInputStream();

                            InputStreamReader isr = new InputStreamReader(is, "UTF-8");

                            BufferedReader br = new BufferedReader(isr);

                            String tmpLine = "";

                            String line = null;

                            while ((line = br.readLine()) != null) {

                                tmpLine = tmpLine + line;

                            }

                            Message msg = new Message();

                            msg.obj = tmpLine;

                            handler.sendMessage(msg);

                        } catch (MalformedURLException e) {

                            // TODO Auto-generated catch block

                            e.printStackTrace();

                        } catch (IOException e) {

                            // TODO Auto-generated catch block

                            e.printStackTrace();

                        }

                    }

                }).start();

            }

        });

    }

    private void initView() {

        word = (EditText) findViewById(R.id.word);

        submit = (Button) findViewById(R.id.submit);

        translation = (TextView) findViewById(R.id.translation);

    }

    Handler handler = new Handler() {

        public void handleMessage(android.os.Message msg) {

            // translation.setText(msg.obj.toString());

            try {

                JSONObject object = new JSONObject(msg.obj.toString());

                JSONObject jsonobject = object.getJSONObject("basic");

                String usPhonetic = jsonobject.getString("us-phonetic");

                String phonetic = jsonobject.getString("phonetic");

                String ukPhonetic = jsonobject.getString("uk-phonetic");

                JSONArray array = jsonobject.getJSONArray("explains");

                String showText = "";

                for (int i = 0; i < array.length(); i++) {

                    String obj = array.getString(i);

                    showText = showText + obj + "\n";

                }

                showText = "美音:\t" + usPhonetic + "\n" + "英音:\t" + ukPhonetic + "\n" + "\n\n" + showText;

                translation.setText(showText);

            } catch (JSONException e) {

                // TODO Auto-generated catch block

                e.printStackTrace();

            }

        };

    };

}

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical"

    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="cn.lixyz.youdaodictionary.MainActivity" >

    <EditText

        android:id="@+id/word"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:layout_margin="10dp" />

    <Button

        android:id="@+id/submit"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:layout_margin="10dp"

        android:text="翻译" />

    <TextView

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:layout_margin="10dp"

        android:text="翻译为：" />

    <TextView

        android:id="@+id/translation"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:layout_margin="10dp" />

</LinearLayout>

　　因为要请求网络连接，所以需要加上INTENET权限

<uses-permission android:name="android.permission.INTERNET"/>