android - How to add tabs dynamically that can be linked to a users choice of webpage -
i developing application uses tabs each tab being linked webpage user able see , interact using webview. having trouble implementing add command user able use add tab url of choice works others
below code
here main java file other files use
public class universityofcolorado extends tabactivity { @override public void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); tabhost host=gettabhost(); host.addtab(host.newtabspec("one") .setindicator("google") .setcontent(new intent(this, hello.class))); host.addtab(host.newtabspec("two") .setindicator("colorado main site") .setcontent(new intent(this, coloradomainsitebrowser.class))); host.addtab(host.newtabspec("three") .setindicator("culearn") .setcontent(new intent(this, culearnbrowser.class))); host.addtab(host.newtabspec("four") .setindicator("culink") .setcontent(new intent(this, culinkbrowser.class))); host.addtab(host.newtabspec("five") .setindicator("mycuinfo") .setcontent(new intent(this, mycuinfobrowser.class))); host.addtab(host.newtabspec("six") .setindicator("campus map") .setcontent(new intent(this, campusbrowser.class))); host.addtab(host.newtabspec("seven") .setindicator("notes") .setcontent(new intent(this, notepadv3.class))); } // inflates menu when "menu key" pressed @override public boolean oncreateoptionsmenu(menu menu) { menuinflater inflater = getmenuinflater(); inflater.inflate(r.menu.menu, menu); return true; } } then have each webpage defined in seperate java file main file calls below 1 of them
public class coloradomainsitebrowser extends activity { webview webview; @override public void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.main); webview = (webview) findviewbyid(r.id.webview); webview.setwebviewclient(new hellowebviewclient()); webview.getsettings().setjavascriptenabled(true); webview.loadurl("http://colorado.edu/"); } private class hellowebviewclient extends webviewclient { @override public boolean shouldoverrideurlloading(webview view, string url) { view.loadurl(url); return true; } } public boolean onkeydown(int keycode, keyevent event) { if ((keycode == keyevent.keycode_back) && webview.cangoback()) { webview.goback(); return true; } return super.onkeydown(keycode, event); } } i have menu defined in main file need construct methods buttons suppose do. great
ok thought i've answered question here
besides, seem replicate similar questions here , here
like i've told you, can acomplish creating activity accepts url of intent.
taking code base start:
browser.java
import android.app.activity; import android.os.bundle; import android.view.keyevent; import android.webkit.webview; import android.webkit.webviewclient; public class browser extends activity { private webview webview; private string url; @override public void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.browser); bundle extras = getintent().getextras(); if (extras == null) { url = "http://www.evonytools.org/"; } else { this.url = extras.getstring("url"); } getwebview(); } public void getwebview() { webview = (webview) findviewbyid(r.id.webview); webview.setwebviewclient(new hellowebviewclient()); webview.getsettings().setjavascriptenabled(true); webview.loadurl(this.url); } private class hellowebviewclient extends webviewclient { @override public boolean shouldoverrideurlloading(webview view, string url) { view.loadurl(url); return true; } } public boolean onkeydown(int keycode, keyevent event) { if ((keycode == keyevent.keycode_back) && webview.cangoback()) { webview.goback(); return true; } return super.onkeydown(keycode, event); } } layout/broswer.xml
<?xml version="1.0" encoding="utf-8"?> <linearlayout android:layout_width="fill_parent" android:layout_height="fill_parent" xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" > <webview android:layout_width="fill_parent" android:layout_height="fill_parent" android:id="@+id/webview" /> </linearlayout> main.java
public class main extends tabactivity{ private tabhost tabhost; private edittext addressbar; private final static string default_url = "http://www.evonytools.org/"; private int z = 0; /** called when activity first created. */ @override public void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.tabs_main); this.tabhost = gettabhost(); // activity tabhost this.addressbar = (edittext) findviewbyid(r.id.address_bar); this.addressbar.settext(default_url); imagebutton addbtn = (imagebutton) findviewbyid(r.id.add_btn); addbtn.setonclicklistener(new onclicklistener() { @override public void onclick(view v) { addmethod(); } }); intent openbrowser = new intent(); openbrowser.setclass(this, browser.class); openbrowser.putextra("url", default_url); tabhost.addtab(tabhost.newtabspec("main").setindicator(gethost(default_url)).setcontent(openbrowser)); } private void addmethod() { string websiteurl = validateurl(addressbar.gettext().tostring().trim()); string websitename = gethost(websiteurl); intent openbrowser = new intent(); openbrowser.setclass(this, browser.class); openbrowser.putextra("url", websiteurl); tabhost.addtab(tabhost.newtabspec(websitename + integer.tostring(z)).setindicator(websitename).setcontent(openbrowser)); ++z; } private void deletemethod() { // since can't delete tab // hide int position = tabhost.getcurrenttab(); if (position != 0 ) { tabhost.getcurrenttabview().setvisibility(8); tabhost.setcurrenttab(0); } } // inflates menu when "menu key" pressed @override public boolean oncreateoptionsmenu(menu menu) { menuinflater inflater = getmenuinflater(); inflater.inflate(r.menu.menu, menu); return true; } // method called once menu selected @override public boolean onoptionsitemselected(menuitem item) { switch (item.getitemid()) { case r.id.add: addmethod(); break; case r.id.delete: deletemethod(); break; } return true; } private string validateurl(string url) { stringbuffer urlb = new stringbuffer(); // checks if addressbar has valid url // can add stuff here in order validate // example if (url.startswith("http://")) {urlb.append(url);} else {urlb.append("http://");} try { url urltry = new url(urlb.tostring()); return urlb.tostring(); } catch (malformedurlexception e) { return "http://www.google.com/"; } } private string gethost(string url) { try { url urltry = new url(url); return urltry.gethost().replace("www.", "").replace(".com", "").replace(".org", "").replace(".net", ""); } catch (malformedurlexception e) { return "browser"; } } } tabs_main.xml
<?xml version="1.0" encoding="utf-8"?> <tabhost xmlns:android="http://schemas.android.com/apk/res/android" android:id="@android:id/tabhost" android:layout_width="fill_parent" android:layout_height="fill_parent"> <linearlayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:padding="5dp"> <tabwidget android:id="@android:id/tabs" android:layout_width="fill_parent" android:layout_height="wrap_content" android:tag="tabpane" /> <relativelayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="wrap_content"> <edittext android:id="@+id/address_bar" android:layout_width="270px" android:layout_height="50px" android:layout_alignparentleft="true" android:layout_alignparenttop="true" /> <imagebutton android:id="@+id/add_btn" android:layout_width="50px" android:layout_height="50px" android:src="@android:drawable/ic_menu_add" android:background="@android:color/transparent" android:layout_torightof="@id/address_bar" /> </relativelayout> <framelayout android:id="@android:id/tabcontent" android:layout_width="fill_parent" android:layout_height="fill_parent" android:padding="2dp" /> </linearlayout> hope i'm not doing homework.
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