Android网页浏览器Demo源码

package cn.android.browser; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import cn.android.browser.HelpTabAct; import cn.android.browser.HistoryBean; import cn.android.browser.HttpData; import cn.android.browser.SQLiteHelper; import cn.android.browser.WriteFavoriteXml; import android.app.Activity; import android.app.AlertDialog; import android.app.Dialog; import android.app.AlertDialog.Builder; import android.content.ComponentName; import android.content.DialogInterface; import android.content.Intent; import android.content.SharedPreferences; import android.database.Cursor; import android.database.SQLException; import android.database.sqlite.SQLiteDatabase; import android.graphics.Bitmap; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.Drawable; import android.os.Bundle; import android.os.Parcelable; import android.util.Log; import android.view.ContextMenu; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.Window; import android.view.ContextMenu.ContextMenuInfo; import android.webkit.WebBackForwardList; import android.webkit.WebChromeClient; import android.webkit.WebSettings; import android.webkit.WebView; import android.webkit.WebViewClient; import android.widget.AdapterView; import android.widget.Button; import android.widget.EditText; import android.widget.ImageButton; import android.widget.ListView; import android.widget.SimpleAdapter; import android.widget.Toast; import android.widget.AdapterView.OnItemClickListener; public class Main extends Activity { private WebView mWebView = null; final Activity context = this; private SQLiteHelper mOpenHelper; public static Cursor myCursor_one; Intent directCall; private WriteFavoriteXml writeXml = new WriteFavoriteXml(); private ImageButton btn = null; private EditText edit = null; private ImageButton forwardBtn = null; private ImageButton backBtn = null; private ListView list = null; private Button go_back = null; private ImageButton menuBtn = null; private final static int HISTORY_ITEM = 0; //历史记录 private final static int HTTP_ITEM = 1; //关于 private final static int SHORTCUT_ITEM = 2; //快捷方式 private final static int ADD_FAVORITE = 3; //加入收藏夹 private final static int FAVORITE_ITEM = 4; //收藏夹 private final static int PREFERENCE_ITEM = 5; //帮助网页 private final static int EXIT_ITEM = 7; //退出 private String cur_url = "http://m.hao123.com"; private final String ACTION_ADD_SHORTCUT = "com.android.launcher.action.INSTALL_SHORTCUT"; List<Map<String, Object>> history_data = new ArrayList<Map<String, Object>>(); List<HistoryBean> xml_data = new ArrayList<HistoryBean>(); String[] dialog_data = new String[]{}; public int selectId = 0; SharedPreferences sp; Drawable drawable; private static String SAVE_KEY = "save-view"; public static Main instance; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); Log.w("debug.onCreate","onCreate"); requestWindowFeature(Window.FEATURE_PROGRESS);//让进度条显示在标题栏上 mOpenHelper = new SQLiteHelper(this); directCall = new Intent(Intent.ACTION_MAIN);//快捷方式 onInit(); instance = this; if (savedInstanceState == null) { deleteTable(); } else { Bundle map = savedInstanceState.getBundle(SAVE_KEY); if (map != null) { restoreState(map); } } } private void onInit() { setContentView(R.layout.main); edit = (EditText)findViewById(R.id.edit_1); mWebView = (WebView) findViewById(R.id.wv1); btn = (ImageButton)findViewById(R.id.button_1); forwardBtn = (ImageButton)findViewById(R.id.forward_btn); backBtn = (ImageButton)findViewById(R.id.back_btn); menuBtn = (ImageButton)findViewById(R.id.menu_btn); btn.setOnClickListener( new Button.OnClickListener() { public void onClick( View v ) { // TODO Auto-generated method stub String str = edit.getText().toString(); if(str != "") { cur_url = str; setTitle(); mWebView.loadUrl(str); } } } ); forwardBtn.setOnClickListener( new Button.OnClickListener() { public void onClick( View v ) { // TODO Auto-generated method stub if(mWebView.canGoForward()) mWebView.goForward(); } } ); backBtn.setOnClickListener( new Button.OnClickListener() { public void onClick( View v ) { // TODO Auto-generated method stub if(mWebView.canGoBack()) mWebView.goBack(); } } ); menuBtn.setOnClickListener( new Button.OnClickListener() { public void onClick( View v ) { context.openOptionsMenu(); } } ); mWebView.setWebViewClient(new WebViewClient(){ public boolean shouldOverrideUrlLoading(WebView view, String url) { mWebView.loadUrl(url); cur_url = url; setTitle(); //insertTable(url,1,mWebView.getTitle()); return true; } }); mWebView.setWebChromeClient(new WebChromeClient() { public void onProgressChanged(WebView view, int progress) { //Activity和Webview根据加载程度决定进度条的进度大小 //当加载到100%的时候 进度条自动消失 context.setProgress(progress * 100); if(progress>=100) { insertTable(cur_url,1,view.getTitle()); } //Log.d("TTTTTTTTT",progress+","+view.getTitle()); } }); mWebView.loadUrl(cur_url); setTitle(); Log.i("debug.Init",cur_url); } @Override public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { Log.i("onCreateContextMenu",v.toString()); Log.i("onCreateContextMenu",String.valueOf(v.getId())); } private void setTitle() { Bitmap bitmap = mWebView.getFavicon(); drawable = new BitmapDrawable(bitmap); //edit.setCompoundDrawables(drawable, null, null, null); drawable = this.getResources().getDrawable(R.drawable.history); edit.setCompoundDrawablesWithIntrinsicBounds(drawable, null,null,null); edit.setText(cur_url); //edit.setMaxLines(1); } @Override public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu); menu.add(0, HISTORY_ITEM, HISTORY_ITEM, R.string.history).setIcon(R.drawable.history); //setIcon,setText menu.add(0, HTTP_ITEM, HTTP_ITEM, R.string.http_name).setIcon(R.drawable.about); menu.add(0, SHORTCUT_ITEM, SHORTCUT_ITEM, R.string.shortcut).setIcon(R.drawable.icon); menu.add(0, ADD_FAVORITE, ADD_FAVORITE, R.string.addFavorite).setIcon(R.drawable.add_favorite); menu.add(0, FAVORITE_ITEM, FAVORITE_ITEM, R.string.favorite).setIcon(R.drawable.favorite); menu.add(1, PREFERENCE_ITEM, PREFERENCE_ITEM, R.string.preference).setIcon(R.drawable.help); return true; } public boolean onOptionsItemSelected(MenuItem item) { switch(item.getItemId()){ case HISTORY_ITEM: goto_history_view(); break; case HTTP_ITEM: showDialog(HTTP_ITEM); break; case SHORTCUT_ITEM: createShortcut();