我正在尝试使用
Android API 10(sdk 2.3.3)开发具有WebView的自定义浏览器,不幸的是我不知道如何拦截网页中的请求,以便在新的浏览器窗口中打开URL,例如与target = “_空白”.
根据API文档,我已经覆盖了WebChromeClient的onCreateWindow,但是在点击这样的链接时不会调用它.可能是这个API级别的错误？我还会覆盖shouldOverrideUrlLoading,以避免WebView打开内置浏览器中的后续链接.
以下是我打开google.com的示例代码.要测试它,点击“新闻”,然后点击任何新闻标题. Android内置浏览器通常会在新的浏览器窗口中打开.
package com.myexample;
import android.app.Activity;
import android.os.Bundle;
import android.os.Message;
import android.util.Log;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Toast;
public class HelloAndroidActivity extends Activity {
private static String TAG = "WebViewTest";
private WebView mWebView;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.i(TAG,"onCreate");
setContentView(R.layout.main);
mWebView = (WebView) findViewById(R.id.mywebview);
mWebView.setWebViewClient(new WebViewClient() {
@Override
public boolean shouldOverrideUrlLoading(WebView view,String url) {
view.loadUrl(url);
return true;
}
});
mWebView.setWebChromeClient(new WebChromeClient() {
@Override
public boolean onCreateWindow(WebView view,boolean dialog,boolean userGesture,Message resultMsg) {
Toast.makeText(getApplicationContext(),"OnCreateWindow",Toast.LENGTH_LONG).show();
return true;
}
});
mWebView.loadUrl("http://www.google.com");
}
}
解决方法
确保将supportMultipeWindows设置为true.没有它,WebChromeClient的onCreateWindow将永远不会被调用.
WebSettings settings = webView.getSettings(); settings.setSupportMultipleWindows(true);
然后注册一个WebChromeClient并覆盖onCreateWindow
webView.setWebChromeClient(new WebChromeClient() {
@Override public boolean onCreateWindow(WebView view,Message resultMsg)
{
WebView newWebView = new WebView(getContext());
addView(newWebView);
WebView.WebViewTransport transport = (WebView.WebViewTransport) resultMsg.obj;
transport.setWebView(newWebView);
resultMsg.sendToTarget();
return true;
}
});
