如何检查android webview中的互联网连接，并显示没有互联网图像不显示默认错误文本？我想显示我的html文件或图像没有互联网。
public class MainActivity extends Activity {
WebView mWebView;
String URL = "http://www.google.com";
ProgressBar loadingProgressBar, loadingTitle;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mWebView = (WebView) findViewById(R.id.webview);
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.loadUrl(URL);
mWebView.setWebViewClient(new MyWebViewClient());
loadingProgressBar = (ProgressBar) findViewById(R.id.progressbar_Horizontal);
mWebView.setWebChromeClient(new WebChromeClient() {
@Override
public void onProgressChanged(WebView view, int newProgress) {
super.onProgressChanged(view, newProgress);
loadingProgressBar.setProgress(newProgress);
//loadingTitle.setProgress(newProgress);
// hide the progress bar if the loading is complete
if (newProgress == 100) {
loadingProgressBar.setVisibility(View.GONE);
} else {
loadingProgressBar.setVisibility(View.VISIBLE);
}
}
});
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if ((keyCode == KeyEvent.KEYCODE_BACK) && mWebView.canGoBack()) {
//if Back key pressed and webview can navigate to previous page
mWebView.goBack();
// go back to previous page
return true;
}
else
{
finish();
// finish the activity
}
return super.onKeyDown(keyCode, event);
}
private class MyWebViewClient extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
}
}