调用有道词典查词

 1 package com.example.happydictionary;  
 2 
 3 import android.app.Activity;  
 4 import android.os.Bundle;  
 5 import android.text.TextUtils;  
 6 import android.view.Menu;  
 7 import android.view.View;  
 8 import android.widget.EditText;  
 9 import android.widget.TextView;  
10 
11 import com.example.happydictionary.dao.WordDao;  
12 
13 public class MainActivity extends Activity {  
14     private WordDao wordDao;  
15     private EditText etWord;  
16     private TextView tvResult;  
17 
18     @Override  
19     protected void onCreate(Bundle savedInstanceState) {  
20         super.onCreate(savedInstanceState);  
21         setContentView(R.layout.activity_main);  
22 
23         initViews();  
24     }  
25 
26     private void initViews() {  
27         etWord = (EditText) findViewById(R.id.etWord);  
28         tvResult = (TextView) findViewById(R.id.tvSearchResult);  
29     }  
30 
31     @Override  
32     public boolean onCreateOptionsMenu(Menu menu) {  
33         // Inflate the menu; this adds items to the action bar if it is present.  
34         getMenuInflater().inflate(R.menu.main, menu);  
35         return true;  
36     }  
37 
38     public void searchWord(View view) {  
39         String english = etWord.getText().toString();  
40         wordDao = new WordDao(this);  
41         if (TextUtils.isEmpty(english)) {  
42             tvResult.setText("请输入您想查询的单词");  
43         } else {  
44             String chinese = wordDao.getChinese(english);  
45             tvResult.setText(chinese);  
46         }  
47     }  
48 
49 }  

 1 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"  
 2     xmlns:tools="http://schemas.android.com/tools"  
 3     android:layout_width="match_parent"  
 4     android:layout_height="match_parent"  
 5     android:background="@drawable/mainbg"  
 6     android:paddingBottom="@dimen/activity_vertical_margin"  
 7     android:paddingLeft="@dimen/activity_horizontal_margin"  
 8     android:paddingRight="@dimen/activity_horizontal_margin"  
 9     android:paddingTop="@dimen/activity_vertical_margin"  
10     tools:context=".MainActivity" >  
11 
12     <EditText  
13         android:id="@+id/etWord"  
14         android:layout_width="wrap_content"  
15         android:layout_height="wrap_content"  
16         android:layout_alignParentLeft="true"  
17         android:layout_alignParentTop="true"  
18         android:layout_marginTop="31dp"    
19         android:ems="10"  
20         android:hint="@string/searchHint"  
21         android:singleLine="true"  
22         android:textColor="#552006"  
23         android:textColorHint="#782f10" >  
24 
25         <requestFocus />  
26     </EditText>  
27 
28     <Button  
29         android:id="@+id/btnSearch"  
30         android:layout_width="wrap_content"  
31         android:layout_height="wrap_content"  
32         android:layout_alignBaseline="@+id/etWord"  
33         android:layout_alignBottom="@+id/etWord"  
34         android:layout_marginLeft="16dp"  
35         android:layout_toRightOf="@+id/etWord"  
36         android:background="@drawable/ibsearchword"  
37         android:onClick="searchWord"  
38         android:text="@string/serachWord" />  
39 
40     <TextView  
41         android:id="@+id/tvSearchResult"  
42         android:layout_width="match_parent"  
43         android:layout_height="match_parent"  
44         android:layout_alignLeft="@+id/etWord"  
45         android:layout_below="@+id/etWord"  
46         android:layout_marginTop="22dp"  
47         android:textSize="25sp"   
48         android:textAppearance="?android:attr/textAppearanceMedium" />  
49 
50 </RelativeLayout>  

 1 import java.io.File;
 2 import java.io.FileNotFoundException;
 3 import java.io.FileOutputStream;
 4 import java.io.IOException;
 5 import java.io.InputStream;
 6 
 7 import com.example.happydictionary.R;
 8 import com.example.happydictionary.R.raw;
 9 
10 import android.content.Context;
11 import android.database.sqlite.SQLiteDatabase;
12 import android.os.Environment;
13 import android.util.Log;
14 public class DBHelper {
15 private final int BUFFER_SIZE = 400000;
16 public static final String DB_NAME = “idiom.db”;
17 public static final String PACKAGE_NAME = “com.example.happydictionary”；
18 public static final String DB_PATH = “/data”
19 + Environment.getDataDirectory().getAbsolutePath() + “/”
20 + PACKAGE_NAME + “/databases”;
21 private Context context;
22 
23 public DBHelper(Context context) {  
24     this.context = context;  
25 }  
26 
27 public SQLiteDatabase openDatabase() {  
28     try {  
29         File myDataPath = new File(DB_PATH);  
30         if (!myDataPath.exists()) {  
31             myDataPath.mkdirs();
32         }  
33         String dbfile = myDataPath + "/" + DB_NAME;  
34         if (!(new File(dbfile).exists())) {
35             InputStream is = context.getResources().openRawResource(  
36                     R.raw.dictionary);
37             FileOutputStream fos = new FileOutputStream(dbfile);  
38             byte[] buffer = new byte[BUFFER_SIZE];  
39             int count = 0;  
40             while ((count = is.read(buffer)) > 0) {  
41                 fos.write(buffer, 0, count);  
42             }  
43             fos.close();  
44             is.close();  
45         }  
46         SQLiteDatabase db = SQLiteDatabase.openOrCreateDatabase(dbfile,  
47                 null);  
48         return db;  
49     } catch (FileNotFoundException e) {  
50         Log.e("Database", "File not found");  
51         e.printStackTrace();  
52     } catch (IOException e) {  
53         Log.e("Database", "IO exception");  
54         e.printStackTrace();  
55     }  
56     return null;  
57 }