使用Android简单实现有道电子词典

前言：

毕业设计的内容，只有Java基础，没学过Android。

本着用到什么学什么，花费了10多个晚上完成毕业设计。

当然，只是简单的实线了电子词典功能，自始至终没有考虑过性能等问题。

本电子词典的数据文件是不错的，有道的API是分析有道电子词典的日志文件得到的，离线的柯林斯词典是Mdict词典的MDX文件转换（https://bitbucket.org/xwang/mdict-analysis）来的。这个是本电子词典的唯一亮点吧，因为我一直觉得数据比界面更重要。

文件布局：





核心文件介绍如下：

布局界面：

public class MainActivity extends FragmentActivity implements OnClickListener {

private ImageView dict_image;
private ImageView translate_image;
private ImageView account_image;

private RelativeLayout dict_layout;
private RelativeLayout translate_layout;
private RelativeLayout account_layout;

private DictFragment dictfragment;
private TransFragment transFragment;
private MyFragment myFragment;
private FragmentManager fManager;

SQLiteDatabase db;
private final String DATABASE_PATH = android.os.Environment
.getExternalStorageDirectory().getAbsolutePath() + "/Mdict";
private final String DATABASE_FILENAME = "dict.db";

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
fManager = getSupportFragmentManager();
initViews();

db = openDatabase();
//		Cursor cs = db.rawQuery("select * from WORDBOOK where WORD='reservation'",null);
//		while (cs.moveToNext()) {
//			Toast.makeText(MainActivity.this, cs.getString(3), 0).show();
//		}
}

@Override
protected void onDestroy() {
db.close();
super.onDestroy();
}

public void initViews() {
dict_image = (ImageView) findViewById(R.id.dict_image);
translate_image = (ImageView) findViewById(R.id.translate_image);
account_image = (ImageView) findViewById(R.id.account_image);

dict_layout = (RelativeLayout) findViewById(R.id.dict_layout);
translate_layout = (RelativeLayout) findViewById(R.id.translate_layout);
account_layout = (RelativeLayout) findViewById(R.id.account_layout);

dict_layout.setBackgroundColor(Color.parseColor("#FDF5E6"));
translate_layout.setBackgroundColor(Color.parseColor("#FDF5E6"));
account_layout.setBackgroundColor(Color.parseColor("#FDF5E6"));

dict_layout.setOnClickListener(this);
translate_layout.setOnClickListener(this);
account_layout.setOnClickListener(this);
}

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.dict_layout:
setChioceItem(0);
break;
case R.id.translate_layout:
setChioceItem(1);
break;
case R.id.account_layout:
setChioceItem(2);
break;
default:
break;
}

}

public void setChioceItem(int index) {
FragmentTransaction transaction = fManager.beginTransaction();
clearChioce();
hideFragments(transaction);
switch (index) {
case 0:
dict_image.setImageResource(R.drawable.tab_dict_pressed);
dict_layout.setBackgroundColor(Color.parseColor("#FDF5E6"));
if (dictfragment == null) {
dictfragment = new DictFragment();
transaction.add(R.id.content, dictfragment);
}else {
transaction.show(dictfragment);
}
break;
case 1:
translate_image.setImageResource(R.drawable.tab_translate_pressed);
translate_layout.setBackgroundColor(Color.parseColor("#FDF5E6"));
if (transFragment == null) {
transFragment = new TransFragment();
transaction.add(R.id.content, transFragment);
}else {
transaction.show(transFragment);
}
break;
case 2:
account_image.setImageResource(R.drawable.tab_account_pressed);
account_layout.setBackgroundColor(Color.parseColor("#FDF5E6"));
if (myFragment == null) {
myFragment = new MyFragment();
transaction.add(R.id.content, myFragment);
}else {
transaction.show(myFragment);
}
break;
default:
break;
}
transaction.commit();
}

public void clearChioce()
{
dict_image.setImageResource(R.drawable.tab_dict_normal);
dict_layout.setBackgroundColor(Color.parseColor("#FDF5E6"));

translate_image.setImageResource(R.drawable.tab_translate_normal);
translate_layout.setBackgroundColor(Color.parseColor("#FDF5E6"));

account_image.setImageResource(R.drawable.tab_account_normal);
account_layout.setBackgroundColor(Color.parseColor("#FDF5E6"));

}
public void hideFragments(FragmentTransaction transaction) {
if (dictfragment != null) {
transaction.hide(dictfragment);
}
if (transFragment != null) {
transaction.hide(transFragment);
}
if (myFragment != null) {
transaction.hide(myFragment);
}
}

public SQLiteDatabase openDatabase()
{
try
{
String databaseFilename = DATABASE_PATH + "/" + DATABASE_FILENAME;
File dir = new File(DATABASE_PATH);
if (!dir.exists())
dir.mkdir();
if (!(new File(databaseFilename)).exists())
{
InputStream is = getResources().openRawResource(R.raw.dict);
FileOutputStream fos = new FileOutputStream(databaseFilename);
byte[] buffer = new byte[8192];
int count = 0;

while ((count = is.read(buffer)) > 0)
{
fos.write(buffer, 0, count);
}
fos.close();
is.close();
}

SQLiteDatabase database = SQLiteDatabase.openOrCreateDatabase(databaseFilename, null);
return database;
}
catch (Exception e)
{
}
return null;
}
}

每日一句界面：

public class Start extends Activity {
private ImageView ivStart;
private SimpleDateFormat sdf;
private String date;
//http://cdn.iciba.com/web/news/longweibo/imag/2015-05-03.jpg
private static final String url = "http://cdn.iciba.com/web/news/longweibo/imag/";

private Handler handle = new Handler() {
public void handleMessage(Message msg) {
switch (msg.what) {
case 0:
Bitmap bmp=(Bitmap)msg.obj;
ivStart.setImageBitmap(bmp);
break;
}
};
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.start_layout);

ivStart = (ImageView) findViewById(R.id.ivStart);
sdf = new SimpleDateFormat("yyyy-MM-dd");
date = sdf.format(new java.util.Date());
//System.out.println(date);

new Thread(new Runnable() {
@Override
public void run() {
Bitmap bmp = getURLimage(url + date + ".jpg");
Message msg = new Message();
msg.what = 0;
msg.obj = bmp;
handle.sendMessage(msg);
}
}).start();
Handler handler = new Handler();
handler.postDelayed(new splashhandler(), 10000);
}

class splashhandler implements Runnable{

public void run() {
startActivity(new Intent(getApplication(),MainActivity.class));
Start.this.finish();
}
}

//下载网络图片
public Bitmap getURLimage(String url) {
Bitmap bmp = null;
try {
URL myurl = new URL(url);
// 获得连接
HttpURLConnection conn = (HttpURLConnection) myurl.openConnection();
conn.setConnectTimeout(6000);//设置超时
conn.setDoInput(true);
conn.setUseCaches(false);//不缓存
conn.connect();
InputStream is = conn.getInputStream();//获得图片的数据流
bmp = BitmapFactory.decodeStream(is);
is.close();
} catch (Exception e) {
e.printStackTrace();
}
return bmp;
}
}

单词查询界面：

public class DictFragment extends Fragment {

MediaPlayer mediaPlayer;
private View view;
// private TextView tvUs;
// private TextView tvUk;
private ImageButton Ibtnbook;
private Button btnSrarch;
private Button btnClear;
private EditText etInput;
private WebView wvShow;
private InputMethodManager imm;
private Spinner spinner;
private String dictName;
private String basicMeaning;
private ArrayAdapter<String> adapter;
private final String DATABASE_PATH = android.os.Environment
.getExternalStorageDirectory().getAbsolutePath() + "/Mdict";
private final String DATABASE_FILENAME = "dict.db";
private static final String[] dict = { "基本释义", "柯林斯英汉双解大辞典", "21世纪大英汉词典",
"英英释义", "专业释义", "网络释义", "同根词", "同近义词", "双语例句", "原声例句", "权威例句", "百科" };

private static final String[] dicts = { "ec", "collins", "ec21", "ee",
"special", "web_trans", "rel_word", "syno", "blng_sents_part",
"media_sents_part", "auth_sents_part", "baike" };

private static final String linkCss = "<link rel=\"stylesheet\" href=\"file:///android_asset/css/style.css\" type=\"text/css\">";

private static final String body = "<html><head>" + linkCss
+ "</head><body class=\"p-dict\" style=\"height: 591px;\">";

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {

view = inflater.inflate(R.layout.dict_fragment, container, false);
InitViews();
setListener();

// 内部打开连接
wvShow.setWebViewClient(new WebViewClient() {
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
});

// 滚动条
wvShow.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
return view;
}

// 初始化
public void InitViews() {
btnSrarch = (Button) view.findViewById(R.id.btnSearch);
btnClear = (Button) view.findViewById(R.id.btnClear);
etInput = (EditText) view.findViewById(R.id.etInput);
wvShow = (WebView) view.findViewById(R.id.wvShow);
// tvUs = (TextView) view.findViewById(R.id.tvUs);
// tvUk = (TextView) view.findViewById(R.id.tvUk);
Ibtnbook = (ImageButton) view.findViewById(R.id.Ibtnbook);
wvShow.getSettings().setDefaultTextEncodingName("UTF-8");
spinner = (Spinner) view.findViewById(R.id.sp);

adapter = new ArrayAdapter<String>(getActivity(),
android.R.layout.simple_spinner_item, dict);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapter);
spinner.setOnItemSelectedListener(new OnItemSelectedListener() {

@Override
public void onItemSelected(AdapterView<?> parent, View view,
int position, long id) {

dictName = adapter.getItem(position);
}

@Override
public void onNothingSelected(AdapterView<?> parent) {

dictName = dict[0];
}
});
}

public void setListener() // 设置监听器
{
Ibtnbook.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
String databaseFilename = DATABASE_PATH + "/"
+ DATABASE_FILENAME;
SQLiteDatabase db = getActivity().openOrCreateDatabase(
databaseFilename, Context.MODE_PRIVATE, null);
Cursor cs = db.rawQuery("select * from wordbook where word=?",
new String[] { etInput.getText().toString().trim() });
if (cs.moveToFirst()) {
Toast.makeText(getActivity(), "已经存在", Toast.LENGTH_SHORT)
.show();
} else {
db.execSQL(
"insert into wordbook(word,meaning) values(?,?)",
new Object[] { etInput.getText().toString().trim(),
basicMeaning });
Toast.makeText(getActivity(), "已经添加", Toast.LENGTH_SHORT)
.show();
}
db.close();
}
});

// 键盘监听
etInput.setOnKeyListener(new OnKeyListener() {

@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {

if (keyCode == KeyEvent.KEYCODE_ENTER) {
new Thread(new Runnable() {

@Override
public void run() {
Search();

}
}).start();
wvShow.setFocusable(true);
wvShow.setFocusableInTouchMode(true);
wvShow.requestFocus();
}
return false;
}
});

// 搜索按钮监听
btnSrarch.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
String word = etInput.getText().toString();
word = word.trim();
if (word.length() == 0) {
Toast.makeText(getActivity(), "查询内容为空", Toast.LENGTH_LONG)
.show();
} else {
// String urlString =
// "http://dict.youdao.com/m/search?keyfrom=dict.mindex&vendor=&q="+
// word;
// String urlString = "http://m.youdao.com/dict?le=eng&q="
// + word;
// wvShow.loadUrl(urlString);

new Thread(new Runnable() {

@Override
public void run() {
Search();

}
}).start();

wvShow.setFocusable(true);
wvShow.setFocusableInTouchMode(true);
wvShow.requestFocus();
}

}
});
// 清除按钮监听
btnClear.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
etInput.setText("");
}
});
}

public void selectDict() {
for (int i = 0; i < dict.length; i++) {
if (dictName == dict[i]) {
dictName = dicts[i];
break;
}
}
}

public void Search() {
selectDict();
// 软键盘开启则关闭，关闭则开启
imm = (InputMethodManager) getActivity().getSystemService(
Context.INPUT_METHOD_SERVICE);
if (imm.isActive()) {
imm.toggleSoftInput(InputMethodManager.SHOW_IMPLICIT,
InputMethodManager.HIDE_NOT_ALWAYS);
}

if (dictName == "ec") { // 基本释义使用另外的接口
basicMeaning = "";
String word = etInput.getText().toString().trim();
StringBuffer buffer = new StringBuffer();
buffer.append("<html><head></head><body>");
GetStringFromWeb json = new GetStringFromWeb();
try {
json.setJson(word, "", 3);
JSONObject jsonObject = new JSONObject(json.getJson());
JSONObject basic = jsonObject.getJSONObject("basic");

// tvUs.setText("美:[" + basic.getString("us-phonetic") + "]");
// tvUk.setText("英:[" + basic.getString("uk-phonetic") + "]");
buffer.append("美:[" + basic.getString("us-phonetic") + "]");
buffer.append("英:[" + basic.getString("uk-phonetic") + "]");
JSONArray explains = basic.getJSONArray("explains");
// System.out.println("here");
for (int i = 0; i < explains.length(); i++) {
buffer.append(explains.getString(i) + "<br>");
basicMeaning += explains.getString(i);
}
buffer.append("</body></html>");
wvShow.loadDataWithBaseURL("", buffer.toString(), "text/html",
"UTF-8", "");
} catch (Exception e) {
e.printStackTrace();
}
} else {
GetStringFromWeb json = new GetStringFromWeb();
String word = etInput.getText().toString().trim();
try {
json.setJson(word, dictName, 2);
String html = body + "<div id=\"" + dictName + "\" "
+ "class=\"trans-container " + dictName + "\">"
+ json.getJson() + "</div></body></html>";
// wvShow.getSettings().setDefaultTextEncodingName("UTF-8");
wvShow.loadDataWithBaseURL("http://m.youdao.com/", html,
"text/html", "UTF-8", null);
// System.out.println(html);
} catch (Exception e) {

e.printStackTrace();
}
}
}

}

Description
Code

翻译界面：

public class TransFragment extends Fragment {

private InputMethodManager imm;
private EditText etSentence;
private TextView tvSentence;
private Button btnDel;
private Button btnTrans;
private View view;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
view = inflater.inflate(R.layout.trans_fragment, container, false);
InitViews();
setListener();
return view;
}

public void InitViews() {
etSentence = (EditText) view.findViewById(R.id.etSentence);
tvSentence = (TextView) view.findViewById(R.id.tvSentence);
btnTrans = (Button) view.findViewById(R.id.btnTrans);
btnDel = (Button) view.findViewById(R.id.btnDel);

}

public void setListener() {
btnTrans.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
new Thread(new Runnable() {

@Override
public void run() {
Research();

}
}).start();
etSentence.setFocusable(true);
etSentence.setFocusableInTouchMode(true);
etSentence.requestFocus();
}
});

btnDel.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
etSentence.setText("");
etSentence.setFocusable(true);
etSentence.setFocusableInTouchMode(true);
etSentence.requestFocus();
}
});

etSentence.setOnKeyListener(new OnKeyListener() {

@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_ENTER) {
new Thread(new Runnable() {

@Override
public void run() {
Research();

}
}).start();
etSentence.setFocusable(true);
etSentence.setFocusableInTouchMode(true);
etSentence.requestFocus();
}
return false;
}
});
}

public void Research() {

imm = (InputMethodManager) getActivity().getSystemService(
Context.INPUT_METHOD_SERVICE);
if (imm.isActive()) {
imm.toggleSoftInput(InputMethodManager.SHOW_IMPLICIT,
InputMethodManager.HIDE_NOT_ALWAYS);
}

GetStringFromWeb json = new GetStringFromWeb();
try {
String word = etSentence.getText().toString().trim();
json.setJson(word, "", 1);
JSONObject jsonObject = new JSONObject(json.getJson());
JSONArray transResult = jsonObject.getJSONArray("trans_result");
String dst = "";
for (int i = 0; i < transResult.length(); i++) {
JSONObject jsons = (JSONObject) transResult.get(i);
dst += jsons.getString("dst");
}
tvSentence.setText(dst);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

源文件下载：http://pan.baidu.com/s/1c26At0k