HTML5 HYBIRD 混合 APP 需要在 H5 頁面中打開第三方網站（例如：百度），android 默認不在當前 WebView 中打開，反而會調用系統或外部瀏覽器，解決辦法是自己重寫 WebViewClient，覆蓋 shouldOverrideUrlLoading 並讓其返回 True。
實現代碼
mWebView.setWebViewClient(new WebViewClient() {
public boolean shouldOverrideUrlLoading(WebView view, String url)
{
//webview 自己加載 URL，讓後通知系統不需要 HandleURL
view.loadUrl(url);
return true;
}
});
原因可以從 Android 源代碼中可知，True if the host application wants to leave the current WebView and handle the url itself, otherwise return false。
/** 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.
* This method is not called for requests using the POST "method".
@param view The WebView that is initiating the callback.
@param url The url to be loaded.
@return True if the host application wants to leave the current WebView and handle the url itself, otherwise return false.
*/
public boolean shouldOverrideUrlLoading(WebView view, String url) {
return false;
}
需要注意一點問題，如果你的代碼中有撥打電話（tel:），發送郵件 (mailto:) 的話，需要在實現代碼時對 URL 簡單篩選一下才好