我在开发一个语言词典应用程序。我把最喜欢的单词保存到“偏好”中。XML 文件中的“收藏夹”内容如下:
<?xml version='1.0' encoding='utf-8' standalone='yes' ?>
<map>
<string name="history">
dict_name::160170::hi,dict_name::157140::he-man,dict_name::184774::jet,dict_name::34527::black
</string>
<string name="waitingTime">
0
</string>
<boolean name="saveFavourite" value="true" />
<string name="defaultDictionary">
dict_name
</string>
<string name="favourite">
dict_name::149271::go,dict_name::25481::back,dict_name::184774::jet
</string>
<boolean name="saveHistory" value="true" />
</map>
我使用以下代码将收藏夹内容加载到 webview 中:
public class User extends Activity {
private static final String FAVOURITE_TAG = "[MyDict - FavouriteView] ";
private static final String CONTENT_TAG = null;
private ListView mLSTFavourite = null;
private ArrayList<String> lstDict = null;
private ArrayList<Integer> lstId = null;
private ArrayList<String> mWordFavourite = null;
private ArrayAdapter<String> aptList = null;
private SharedPreferences prefs;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.favourite);
prefs = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
if (prefs.getBoolean("saveFavourite", true)) {
String strFavourite = prefs.getString("favourite", "");
Log.i(FAVOURITE_TAG, "Favourite loaded");
if (strFavourite != null && !strFavourite.equals("")) {
mWordFavourite = new ArrayList<String>(Arrays.asList(strFavourite.split(",")));
} else {
mWordFavourite = new ArrayList<String>();
}
} else {
mWordFavourite = new ArrayList<String>();
}
Log.d(FAVOURITE_TAG, "mWordFavourite = " + mWordFavourite.size());
mLSTFavourite = (ListView) findViewById(R.id.lstFavourite);
ImageButton btnClear = (ImageButton) findViewById(R.id.btnClear);
ImageButton btnBackToContent = (ImageButton) findViewById(R.id.btnBackToContent);
if (lstDict == null) {
lstDict = new ArrayList<String>();
lstId = new ArrayList<Integer>();
aptList = new ArrayAdapter<String>(getApplicationContext(), R.layout.customlist);
}
lstDict.clear();
lstId.clear();
aptList.clear();
if (mWordFavourite != null && mWordFavourite.size() > 0) {
try {
for (int i = 0; i < mWordFavourite.size(); i++) {
Log.i(FAVOURITE_TAG, "item = " + mWordFavourite.get(i));
String arrPart[] = mWordFavourite.get(i).split("::");
if (arrPart.length == 3) {
Log.i(CONTENT_TAG, "loaded content " + arrPart.length + ", wordId = " + arrPart[1]);
// Log.i(CONTENT_TAG, "loaded 0");
lstDict.add(i, arrPart[0]);
// Log.i(CONTENT_TAG, "loaded 1");
lstId.add(i, Integer.parseInt(arrPart[1]));
// Log.i(CONTENT_TAG, "loaded 2");
aptList.add(arrPart[2]);
} else {
Log.i(FAVOURITE_TAG, "Wrong entry: " + mWordFavourite.get(i));
}
}
} catch (Exception ex) {
Log.i(FAVOURITE_TAG, "Wrong entry found!");
}
}
// Log.i(CONTENT_TAG,"Adapter size = " + aptList.getCount());
// assign result return
mLSTFavourite.setAdapter(aptList);
mLSTFavourite.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> arg0, View v, int arg2, long arg3) {
// mEDWord.setText(mAdapter.getItem(arg2));
Intent i = new Intent();
i.putExtra("dict", lstDict.get(arg2));
i.putExtra("wordId", lstId.get(arg2));
setResult(RESULT_OK, i);
finish();
}
});
btnClear.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
mWordFavourite.clear();
aptList.clear();
mLSTFavourite.setAdapter(aptList);
SharedPreferences.Editor editor = prefs.edit();
editor.putString("favourite", "");
editor.commit();
setResult(RESULT_OK);
finish();
}
});
btnBackToContent.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
setResult(RESULT_CANCELED);
finish();
}
});
}
}
成功加载“收藏夹”内容。最喜欢的单词在 webview 中列出。但问题是,无论选择哪个单词,它都只显示添加到“收藏夹”中的最新单词的定义。例如:
word1
word2
word3
尽管 word1和/或 word2用于表示意思,但是总是显示最后一个单词的定义,即 word3。我的目的是在选择 word1
时显示 word1
的定义,选择 word2
时显示 word2
的定义,等等。我将字典数据保存在 SQLite 数据库中。
那里有人能帮忙解决这个问题吗。