Android Custom WebView Browser

WebView is a very practical component in Android. Like Safai and Chrome, it is based on the Webkit web rendering engine, and can easily display the software interface by loading HTML data.

Add <EditText/> and <Button/> controls in the layout file,

Adding <WebView/> control in the layout file

Get WebView object in Activity

Call the loadUrl() method of the WebView object, parameter: String path

Add permissions to access the network

Call the getSettings() method of the WebView object to get the WebSettings setting object

Call the setSupportZoom() method of the WebSettings object, set support scaling, parameters: Boolean value

Call setBuiltInZoomControls() of the WebSettings object to set the scaling control, parameters: Boolean value,

Call the setWebViewClient() method of the WebView object, set the client to prevent links from opening the system browser, parameters: WebViewClient object

Listen to the back button and return to the previous interface

Rewrite the onKeyDown() method of Activity, pass the parameters in the int keyboard code, and the KeyEvent object

If the keyboard code is equal to KeyEvent.KEYCODE_BACK and the current WebView object has many pages that can be backed, call the canGoBack() method of the WebView object

Call the goBack() method of the WebView object, and the page backs

Set menu key, override the onCreateOptionsMenu() method, and pass in the Menu object

Call the addSubMenu() method of the Menu object, add menu, parameters: group id, entry id, sort, title

Add refresh, backward, forward

Listen to small menu click events

Rewrite the onOptionsItemSelected() method and pass it in the MenuItem object

Switch determines the getOrder() of MenuItem object, corresponding to the above sort

Page refresh, call the reload() method of the WebView object

The page backs, first call the canGoBack() method of the WebView object to determine whether it can backs, and call the goBack() method to backs

The page is advanced, call the canGoForward() method of the WebView object to determine whether it can be advanced, call the goForward() method to advance

Page loading

Get the ProgressDialog object, new out, parameters: context

Call the setMessage() method of the ProgressDialog object, parameter: text

Call the setWebChromeClient() method of the WebView object, parameters: WebViewClient object,

Anonymous internal class inherits the WebViewClient class and overrides the onPageStarted() method and onPageFinshed() method.

In the onPageStarted() method

Call the show() method of the ProgressDialog object

In the onPageFinshed() method

Call the dismiss() method of the ProgressDialog object

package ;
import ;
import ;
import ;
import ;
import ;
import ;
import ;
import ;
import ;
import ;
import ;
public class MainActivity extends Activity {
private WebView webview;
private ProgressDialog pd;
@Override
protected void onCreate(Bundle savedInstanceState) {
(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(.activity_main);
pd=new ProgressDialog(this);
("Loading...");
//Simple settings of webviewwebview=(WebView) findViewById(.wv_internet);
("");
WebSettings websettings=();
(true);
(true);
(new WebViewClient(){
@Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
();
}
@Override
public void onPageFinished(WebView view, String url) {
();
}
});
}
//Back key@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if(keyCode==KeyEvent.KEYCODE_BACK&&()){
();
return true;
}
return (keyCode, event);
}
//Menu Key@Override
public boolean onCreateOptionsMenu(Menu menu) {
(0, 0, 0, "refresh");
(0, 0, 1, "Back");
(0, 0, 2, "go ahead");
return (menu);
}
//Menu Click Event@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (()) {
case 0:
();
break;
case 1:
if(()){
();
}
break;
case 2:
if(()){
();
}
break;
}
return (item);
}
}

I will introduce so much to you about the content of the Android custom WebView browser introduced in this article, and I hope it will be helpful to you!