之前一直很疑惑，看了很多webview控件的简单实例，发现打开网页是正常的，但是单击链接的时候，会自动调用android自带的浏览器来打开链接，苦苦搜寻后终于找到问题所在
参考《Android Developers》，感谢
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You now have a simplest web page viewer. It’s not quite a browser yet because as soon as you click a link, the default Android Browser handles the Intent to view a web page, because this
Activityisn’t technically enabled to do so. Instead of adding an intent filter to view web pages, you can override theWebViewClientclass and enable thisActivityto handle its own URL requests. - In the
HelloAndroidActivity, add this nested class:private class HelloWebViewClient extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
} - Then towards the end of the
onCreate(Bundle)method, set an instance of theHelloWebViewClientas theWebViewClient:mWebView.setWebViewClient(new HelloWebViewClient());
关于shouldOverrideUrlLoading，见下
public boolean shouldOverrideUrlLoading (WebView view, String url)
Give the host application a chance to take over the control when a new url is about to be loaded in the current WebView. If WebViewClient is not provided, by default WebView will ask Activity Manager to choose the proper handler for the url. If WebViewClient is provided, return true means the host application handles the url, while return false means the current WebView handles the url.
Parameters
| view | The WebView that is initiating the callback. |
|---|---|
| url | The url to be loaded. |
Returns
- True if the host application wants to leave the current WebView and handle the url itself, otherwise return false.