StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

PO
text
Body
copied!<p>[Updated] @JOG: Thanks a lot. I have managed to make ViewHistory work but still haven't figured out how to view the Favourite list. To be more specific, please find enclosed my ContentView file:</p> <pre><code>package viettien.kadict; import java.util.ArrayList; import java.util.Arrays; import viettien.kadict.R; import android.app.Activity; import android.app.ProgressDialog; import android.content.Intent; import android.content.SharedPreferences; import android.database.Cursor; import android.graphics.Color; import android.net.Uri; import android.os.Bundle; import android.preference.PreferenceManager; import android.util.Log; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.Window; import android.webkit.WebView; import android.webkit.WebViewClient; import android.widget.ImageButton; import android.widget.Toast; public class ContentView extends Activity { static final private String CONTENT_TAG = "[Kadict - Content]"; static final private int SHOW_HISTORY_CODE = 0; static final private int SHOW_FAVOURITE_CODE = 1; static final private int MENU_BACK = Menu.FIRST; static final private int MENU_FOWARD = Menu.FIRST+1; static final private int MENU_LIST = Menu.FIRST+2; static final private int MENU_HISTORY = Menu.FIRST+3; private static final String MIMETYPE = "text/html"; private static final String ENCODING = "UTF-8"; private WebView wvContent = null; private ImageButton btnGoBack = null; private ImageButton btnGoForward = null; private ImageButton btnShowHistory = null; private ImageButton btnAddFavourite = null; private String mCurrentWord; private String mSelectedDB; //private String mSelectedDBName; private String mContentStyle; private int mCurrentWordId; private int mCurrentHistoryIndex = -1; Menu menu = null; private ArrayList<String> mWordHistory = null; private SharedPreferences prefs; private ProgressDialog pd = null; // create Menu for Program @Override public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu); Log.i(CONTENT_TAG, "menu drawed!!"); // Group ID int groupId = 0; // The order position of the item int menuItemOrder = Menu.NONE; this.menu=menu; // Added extra items to make sure there's more than six to // force the extended menu to appear. menu.add(groupId, MENU_BACK, menuItemOrder, R.string.menuGoBack); menu.add(groupId, MENU_FOWARD, menuItemOrder, R.string.menuGoForward); menu.add(groupId, MENU_LIST, menuItemOrder, R.string.menuList); menu.add(groupId, MENU_HISTORY, menuItemOrder, R.string.menuHistory); return true; } // process event select Menu public boolean onOptionsItemSelected(MenuItem item) { super.onOptionsItemSelected(item); // Find which menu item has been selected switch (item.getItemId()) { case (MENU_BACK): { goBack(); break; } case (MENU_FOWARD): { goForward(); break; } case (MENU_LIST): { //menuDictionaryManager(); menuList(); break; } case (MENU_HISTORY): { break; } } return true; } public void menuList() { /* * TODO * - save history list */ Intent i = new Intent(); i.putExtra("word", mCurrentWord); setResult(RESULT_OK,i); finish(); } public void goBack() { Log.i(CONTENT_TAG,"go back"); String content = getHistoryContent("back"); showContent(content); } public void goForward() { Log.i(CONTENT_TAG,"go foward"); String content = getHistoryContent("back"); showContent(content); } @Override public void onPause() { super.onPause(); saveHistoryToPreferences(); } public void saveHistoryToPreferences() { if (prefs.getBoolean("saveHistory", true) && mWordHistory != null && mWordHistory.size() >= 1) { StringBuilder sbHistory = new StringBuilder(); for (String item : mWordHistory) { sbHistory.append(item); sbHistory.append(","); } String strHistory = sbHistory.substring(0, sbHistory.length()-1); SharedPreferences.Editor editor = prefs.edit(); editor.putString("history", strHistory); editor.commit(); //Log.i(CONTENT_TAG,"history = " + strHistory); Log.i(CONTENT_TAG,"History saved!"); } } public void loadHistoryFromPreferences() { if (prefs.getBoolean("saveHistory", true)) { String strHistory = prefs.getString("history", ""); Log.i(CONTENT_TAG, "History loaded"); if (strHistory != null && !strHistory.equals("")) { mWordHistory = new ArrayList<String>(Arrays.asList(strHistory.split(","))); } else { if (mWordHistory == null) { mWordHistory = new ArrayList<String>(); } else { mWordHistory.clear(); } } } else { if (mWordHistory == null) { mWordHistory = new ArrayList<String>(); } else { mWordHistory.clear(); } } } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(R.layout.content); //Log.i(CONTENT_TAG,".................onCreate................."); Intent i = this.getIntent(); int wordId = i.getIntExtra("id", -1); mCurrentWord = i.getStringExtra("word"); mSelectedDB = i.getStringExtra("db"); mContentStyle = i.getStringExtra("style"); //Log.i(CONTENT_TAG,"Style from intent = " + mContentStyle); //Log.d(CONTENT_TAG,"current word = " + mCurrentWord); prefs = PreferenceManager.getDefaultSharedPreferences(getApplicationContext()); loadHistoryFromPreferences(); wvContent = (WebView) findViewById(R.id.wvContent); initWebview(); String content = getContentById(wordId); showContent(content); btnShowHistory = (ImageButton) findViewById(R.id.btnShowHistory); btnShowHistory.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub Log.i(CONTENT_TAG, "Start showing history.."); /* Intent i = new Intent(v.getContext(), HistoryView.class); HistoryList hl = new HistoryList(mWordHistory); i.putExtra("history", hl);*/ startActivityForResult(new Intent(v.getContext(),HistoryView.class), SHOW_HISTORY_CODE); //showHistory(); } }); btnGoBack = (ImageButton) findViewById(R.id.btnGoBack); btnGoBack.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub Log.d(CONTENT_TAG, "Start going back"); { String content = getHistoryContent("back"); if (content == null) // end Activity now { menuList(); } else // go back to previous word { showContent(content); } menuList(); } }}); btnGoForward = (ImageButton) findViewById(R.id.btnGoForward); btnGoForward.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub Log.d(CONTENT_TAG, "Start going forward"); goForward(); } }); btnAddFavourite = (ImageButton) findViewById(R.id.btnAddFavourite); btnAddFavourite.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub Toast toast = Toast.makeText(ContentView.this, R.string.messageWordAddedToFarvourite, Toast.LENGTH_SHORT); toast.show(); } }); btnAddFavourite.setOnLongClickListener(new View.OnLongClickListener() { @Override public boolean onLongClick(View v) { Intent intent = new Intent(getApplicationContext(), SearchActivity.class); intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); getApplicationContext().startActivity(intent); return false; } }); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); switch (requestCode) { case SHOW_HISTORY_CODE: Log.i(CONTENT_TAG,"resultCode = " + resultCode); if (resultCode == RESULT_OK) // cleared { if (data == null) { //loadHistoryFromPreferences(); mWordHistory.clear(); Log.i(CONTENT_TAG,"History cleared"); } else { int id = data.getIntExtra("wordId", 0); String dict = data.getStringExtra("dict"); Log.i(CONTENT_TAG,"id = " + id + " | dict = " + dict); if (id > 0 && dict != null) { mSelectedDB = dict; String content = getContentById(id); //initWebview(); showContent(content); } } } break; case SHOW_FAVOURITE_CODE: break; } } /* @Override public boolean onKeyDown(int keyCode, KeyEvent event) { //super.onKeyDown(keyCode, event); if (keyCode == KeyEvent.KEYCODE_BACK) { // When the user center presses, let them pick a contact. Log.d(CONTENT_TAG,"Backkey pressed !!!"); if (mWordHistory != null && mWordHistory.size() > 1 && mCurrentHistoryIndex != 0) { String content = getHistoryContent("back"); if (content == null) // end Activity now { menuList(); } else // go back to previous word { showContent(content); } } else { menuList(); } return true; } return false; }*/ public void initWebview() { setContentView(R.layout.content); wvContent = (WebView) findViewById(R.id.wvContent); wvContent.setBackgroundColor(Color.argb(250, 250, 250, 250)); wvContent.setWebViewClient(new WebViewClient() { public void onPageFinished(WebView view, String url) { if (pd != null) { pd.dismiss(); pd = null; } } @Override public boolean shouldOverrideUrlLoading(WebView view, String url) { Log.i(CONTENT_TAG,"WebView link clicked; url = " + url); try { String arrUrlPart[] = url.split("://"); if (arrUrlPart[0].equals("entry")) { String content = getContentByWord(arrUrlPart[1]); showContent(content); } else if (arrUrlPart[0].equals("http")) { try { /*Intent i = new Intent(); ComponentName comp = new ComponentName( "com.google.android.browser", "com.google.android.browser.BrowserActivity"); i.setComponent(comp); i.setAction("android.intent.action.VIEW"); i.addCategory("android.intent.category.BROWSABLE"); ContentURI uri = new ContentURI(url); i.setData(uri); startSubActivity(i, 2);*/ startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(url))); } catch (Exception ex) { // TODO Auto-generated catch block ex.printStackTrace(); } } } catch (Exception ex) { ex.printStackTrace(); } return true; } }); } public String getHistoryContent(String type) { String currentTerm = mSelectedDB + ":" + mCurrentWordId + ":" + mCurrentWord; Log.i(CONTENT_TAG,"currentTerm = " +currentTerm); if (mWordHistory == null || mWordHistory.isEmpty()) { return null; } int pos = mWordHistory.indexOf(currentTerm); Log.i(CONTENT_TAG,"pos = " + pos); if (pos <= 0) { pos = mWordHistory.size(); } String item = null; String searchTerm; if (type.equals("back")) { try { for (int i = pos-1; i >= 0 ; i--) { searchTerm = mWordHistory.get(i); searchTerm = searchTerm.substring(0,searchTerm.indexOf("::")); Log.i(CONTENT_TAG,"item = " + mWordHistory.get(i) + " - searchTerm = " + searchTerm); if (searchTerm.equals(mSelectedDB)) { item = mWordHistory.get(i); mCurrentHistoryIndex = i; break; } } } catch (Exception ex) { Log.i(CONTENT_TAG,"Error in finding history entry"); } } else { try { for (int i = pos; i < mWordHistory.size() ; i++) { searchTerm = mWordHistory.get(i); searchTerm = searchTerm.substring(0,searchTerm.indexOf("::")); Log.i(CONTENT_TAG,"item = " + mWordHistory.get(i) + " - searchTerm = " + searchTerm); if (searchTerm.equals(mSelectedDB)) { item = mWordHistory.get(i); mCurrentHistoryIndex = i; break; } } } catch (Exception ex) { Log.i(CONTENT_TAG,"Error in finding history entry"); } } if (item != null) // found previous item { Log.i(CONTENT_TAG,"item index = " + mCurrentHistoryIndex); String arrPart[] = item.split(":"); Uri uri = Uri.parse("content://viettien.kadict.KadictProvider/dict/" + arrPart[0] + "/contentId/" + arrPart[1]); Log.i(CONTENT_TAG,"History uri = " + uri.toString()); Cursor result = managedQuery(uri,null,null,null,null); String content; if (result != null) { result.moveToFirst(); content = Utility.decodeContent(result.getString(result.getColumnIndex("content"))); content = formatContent(content); mSelectedDB = arrPart[0]; mCurrentWordId = Integer.parseInt(arrPart[1]); mCurrentWord = arrPart[2]; return content; } else { return null; } } else { return null; } } public String getContentById(int id) { Uri uri = Uri.parse("content://viettien.kadict.KadictProvider/dict/" + mSelectedDB + "/contentId/" + id); Cursor result = managedQuery(uri,null,null,null,null); String content; if (result != null) { result.moveToFirst(); content = Utility.decodeContent(result.getString(result.getColumnIndex("content"))); mCurrentWordId = result.getInt(result.getColumnIndex("id")); mCurrentWord = result.getString(result.getColumnIndex("word")); } else // Word not found { content = getString(R.string.errorWordNotFound); mCurrentWordId = -1; mCurrentWord = ""; } content = formatContent(content); return content; } public String getContentByWord(String word) { Uri uri = Uri.parse("content://viettien.kadict.KadictProvider/dict/" + mSelectedDB + "/contentWord/" + word); Log.i(CONTENT_TAG,"uri = " + uri.toString()); Cursor result = managedQuery(uri,null,null,null,null); String content; if (result != null && result.getCount() > 0) { result.moveToFirst(); content = Utility.decodeContent(result.getString(result.getColumnIndex("content"))); mCurrentWordId = result.getInt(result.getColumnIndex("id")); mCurrentWord = result.getString(result.getColumnIndex("word")); } else { content = getString(R.string.errorWordNotFound) + word; mCurrentWordId = -1; mCurrentWord = ""; } content = formatContent(content); return content; } public void saveHistory() { String item = mSelectedDB + "::" + mCurrentWordId + "::" + mCurrentWord; if (mWordHistory.indexOf(item) == -1 && mCurrentWordId != -1) // new item { mWordHistory.add(item); mCurrentHistoryIndex = mWordHistory.size(); if (menu != null) { menu.findItem(MENU_FOWARD).setEnabled(false); if (mWordHistory.size() == 1) { menu.findItem(MENU_BACK).setEnabled(false); } } //Log.i(CONTENT_TAG,"new item added " + item); } } public String formatContent(String content) { StringBuilder htmlData = new StringBuilder(); htmlData.append("<html><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"/>\n"); if (mContentStyle != null && !mContentStyle.equals("")) { htmlData.append("<head><style type=\"text/css\">"+mContentStyle+"</style></head>\n"); } htmlData.append("<body><font face=\"Arial\">"); htmlData.append(content); htmlData.append("</font></body></html>"); return htmlData.toString(); } public void showContent(String content) { if (content != null) { pd = ProgressDialog.show(this, "Working...", "Loading content", true,false); saveHistory(); wvContent.loadDataWithBaseURL (null, content, MIMETYPE, ENCODING,"about:blank"); } } } </code></pre>

Querying!

Guidance

An individual column

Larger individual text columns get their own page to allow for proper reading.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload