Step 1: Create a xml name tabhost.xml, for desigining the Tab Host, as i shown below
<?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>
</TabHost>
Step 2: Create a Activity which extends TabActitvity as i shown below
public class Main extends TabActivity{
private TabHost tabHost;
private EditText addressBar;
private final static String DEFAULT_URL = "http://www.google.com/";
private int z = 0;
private String SanTest=null;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.tabs_main);
this.tabHost = getTabHost(); // The 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(); // Method which adds the Tab Host
}
});
Intent openBrowser = new Intent();
openBrowser.setClass(Main.this, Browser1.class);
openBrowser.putExtra("URL", DEFAULT_URL);
SanTest=Intent.CATEGORY_LAUNCHER;
Log.d("SanTest",SanTest);
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, Browser1.class);
openBrowser.putExtra("URL", webSiteURL);
tabHost.addTab(tabHost.newTabSpec(webSiteName + Integer.toString(z)).setIndicator(webSiteName).setContent(openBrowser));
Log.d("z",Integer.toString(z));
++z;
}
private void deleteMethod() {
// Since we can't really delete a TAB
// We hide it
int position = tabHost.getCurrentTab();
Log.d("Position",Integer.toString(position));
// if (position != 0 ) {
//
// tabHost.getCurrentTabView().setVisibility(1);
// tabHost.setCurrentTab(position-1);
//
// }
// else if(position== z){
// tabHost.getCurrentTabView().setVisibility(1);
// tabHost.setCurrentTab(position+1);
// }
Log.d("Z val in delete()",Integer.toString(z));
if(position >0)
{
tabHost.getCurrentTabView().setVisibility(View.GONE);
tabHost.setCurrentTab(position+1);
z-=1;
if(z<0)
z=0;
}
else if(position == 0)
{
tabHost.getCurrentTabView().setVisibility(View.GONE);
tabHost.setCurrentTab(position+1);
z=0;
}
else if(position == z)
{
tabHost.getCurrentTabView().setVisibility(View.GONE);
tabHost.setCurrentTab(z-1);
Log.d("Z value in final","lol");
Log.d("Pos",Integer.toString(position));
Log.d("z pos",Integer.toString(z));
}
}
// Inflates menu when "menu Key" is pressed
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.title_icon, menu);
return true;
}
// This method is called once the menu is 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 a valid URL
// you can add stuff here in order to validate
// this is just an 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";
}
}
}
Step 3: Inside an XML , which will display the Web View
<?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>
Step 4: Create the Activity which load the url in WebView
public class Browser1 extends Activity {
private WebView webview;
private String URL;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.broswer);
webview = (WebView) findViewById(R.id.webview);
Bundle extras = getIntent().getExtras();
Log.d("I m before If","1");
if (extras == null) {
Log.d("I m in if condition","1");
URL = "http://www.google.org/";
} else {
Log.d("I m in else condition","2");
this.URL = extras.getString("URL");
Log.d("URL",this.URL);
}
getWebView();
}
public void getWebView() {
//Log.d("GetWebView Invoked", URL);
webview.loadUrl(URL);
webview.setWebViewClient(new HelloWebViewClient());
webview.getSettings().setJavaScriptEnabled(true);
}
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);
}
}
Step 5: Output Screen Shot
