Android Development--web Browser Development (1) Version 1.0

1, build a new project Webdemo

2,layout under Activity_main Design Interface (1) to be optimized

<relativelayout xmlns:android= "Http://schemas.android.com/apk/res/android"
Xmlns:tools= "Http://schemas.android.com/tools"
Android:layout_width= "Match_parent"
android:layout_height= "Match_parent"
tools:context= "${relativepackage}.${activityclass}" >

<button
Android:id= "@+id/btn_go"
Android:layout_width= "Wrap_content"
android:layout_height= "Wrap_content"
Android:layout_alignparentright= "true"
Android:layout_alignparenttop= "true"
android:text= "@string/btn_go"/>

<edittext
Android:id= "@+id/et"
Android:layout_width= "Wrap_content"
android:layout_height= "Wrap_content"
Android:layout_alignbaseline= "@+id/btn_go"
Android:layout_alignbottom= "@+id/btn_go"
Android:layout_alignparentleft= "true"
android:layout_toleftof= "@+id/btn_go"
Android:ems= "10"
android:hint= "@string/ed_hint"/>

<webview
Android:id= "@+id/wv"
Android:layout_width= "Match_parent"
android:layout_height= "Match_parent"
Android:layout_alignparentleft= "true"
android:layout_below= "@+id/btn_go"/>

Layout interface:

</RelativeLayout>

3, increase the permissions of the connection network

<uses-permission android:name= "Android.permission.INTERNET"/>
<uses-permission android:name= "Android.permission.ACCESS_NETWORK_STATE"/>

4, writing code

Package Com.example.webdemo;

Import Android.annotation.SuppressLint;
Import android.app.Activity;
Import Android.os.Bundle;
Import Android.view.Menu;
Import Android.view.MenuItem;
Import Android.view.View;
Import Android.view.View.OnClickListener;
Import Android.webkit.WebView;
Import android.webkit.WebViewClient;
Import Android.widget.Button;
Import Android.widget.EditText;

//Click event Listener Interface

public class Mainactivity extends Activity implements Onclicklistener {
// statement
Private Button Btn_go;
Private EditText et;
Private WebView WV;

Initialize URL
Private String et_url= "www.baidu.com";

@Override
protected void OnCreate (Bundle savedinstancestate) {
Super.oncreate (savedinstancestate);
Setcontentview (R.layout.activity_main);
Initializing the control
btn_go= (Button) Findviewbyid (R.ID.BTN_GO);
et= (EditText) Findviewbyid (r.id.et);
wv= (WebView) Findviewbyid (R.ID.WV);

Setting a click Listener event for a control
Btn_go.setonclicklistener (this);
Et.setonclicklistener (this);
Wv.setonclicklistener (this);

Get the URL in the input box
Et_url=et.gettext (). toString ();

Calling methods
Webstyle ();
}

Format the webview and its load URL
@SuppressLint ("setjavascriptenabled")
private void Webstyle ()
{
Wv.getsettings (). Setjavascriptenabled (True);
Wv.getsettings (). Setsupportzoom (True);
Wv.setscrollbarstyle (Webview.scrollbars_outside_overlay);
Wv.requestfocus ();
Wv.loadurl ("http://www.baidu.com");
Wv.setwebviewclient (New mywebviewclient ());
}
Click events

@Override
public void OnClick(View v) {
TODO auto-generated Method Stub
String Url_text;
String url_head = "http://";
Url_text=et.gettext (). toString ();
if (!url_text.contains ("http.//")) {
Url_text=url_head.concat (Url_text);}
Wv.loadurl (Url_text);

}

Setwebviewclient class
Class Mywebviewclient extends Webviewclient
{
@Override
public boolean shouldoverrideurlloading (WebView view, String URL) {
TODO auto-generated Method Stub
View.loadurl (Et_url);
return true;

}
}
}

5, running effect,