我正在webview中加载一个网站,我们在网站上使用了Ajax,它在网页浏览器和移动浏览器上也运行良好,但在android webview中ajax无法正常工作,控制台中没有错误.这是我的代码: –
public class Activity_WebView extends AppCompatActivity implements
ConnectivityReceiver.ConnectivityReceiverListener {
WebView webview;
ProgressDialog pro_dialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_web_view);
webview = (WebView) findViewById(R.id.webview);
webview.getSettings().setPluginState(WebSettings.PluginState.ON);
webview.setWebViewClient(new loadinsame());
pro_dialog = new ProgressDialog(Activity_WebView.this);
webview.getSettings().setJavaScriptEnabled(true);
webview.getSettings().setDomStorageEnabled(true);
webview.getSettings().setAllowUniversalAccessFromFileURLs(true);
boolean connection = checkConnection();
if (connection) {
webview.loadUrl("website url");
} else {
Toast.makeText(Activity_WebView.this, "Sorry! Not connected to
internet", Toast.LENGTH_SHORT).show();
dialog_Show(webview, "Please check you Inernet connect and Reload.",
false);
}
}
@Override
public void onNetworkConnectionChanged(boolean isConnected) {
if (!isConnected) {
Toast.makeText(Activity_WebView.this, "Sorry! Not connected to
internet", Toast.LENGTH_SHORT).show();
}
}
private class loadinsame extends WebViewClient {
@Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
pro_dialog.setCancelable(false);
pro_dialog.setMessage("Loading...");
pro_dialog.show();
}
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
@Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
pro_dialog.dismiss();
}
@Override
public void onReceivedError(final WebView webview, WebResourceRequest
request, WebResourceError error) {
super.onReceivedError(webview, request, error);
pro_dialog.dismiss();
// dialog_Show(webview, "Error Occur, Do you want to Reload?", true);
}
}
@Override
public void onBackpressed() {
if (webview.canGoBack()) {
webview.goBack();
} else {
super.onBackpressed();
}
}
private boolean checkConnection() {
boolean isConnected = ConnectivityReceiver.isConnected();
return isConnected;
}
@Override
protected void onResume() {
super.onResume();
MyApplication.getInstance().setConnectivityListener(this);
}
}
当我使用模拟器检查chrome中的网站时,发现我的ajax保持挂起状态,然后在一段时间后取消.
提前致谢.
解决方法:
通过覆盖shouldInterceptRequest拦截你的ajax调用是这样的:
private class LoadInSame extends WebViewClient {
@Override
public WebResourceResponse shouldInterceptRequest(WebView webview, WebResourceRequest webrequest)
{
Log.d("test", "shouldInterceptRequest");
return this.handleRequest(webrequest.getUrl().toString());
}
@NonNull
private WebResourceResponse handleRequest(@NonNull String urlString) {
try {
URL url = new URL(urlString);
HttpURLConnection connection = (HttpURLConnection)url.openConnection();
connection.setRequestProperty("User-Agent", "");
connection.setRequestMethod("GET");
connection.setDoInput(true);
connection.connect();
InputStream inputStream = connection.getInputStream();
return new WebResourceResponse("text/json", "utf-8", inputStream);
} catch (MalformedURLException e) {
e.printstacktrace();
return null;
}
catch (ProtocolException e) {
e.printstacktrace();
return null;
}catch (IOException e) {
e.printstacktrace();
return null;
}
}
}
还请遵循JAVA命名约定.