@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK && mWebView.canGoBack()) {
mWebView.goBack();
return false;
}
return super.onKeyDown(keyCode, event);
}
@Override
public void handleMessage(Message msg) {
if (msg.what != 200) { // 主页不存在
// 载入本地assets文件夹下面的错误提示页面404.html
mWebView.loadUrl("file:///android_asset/404.html");
} else {
mWebView.loadUrl(Url);
}
}
@Override
protected void initView() {
setNav(R.drawable.ic_menu_back);
mWebView = (MyWebView) findViewById(R.id.webview);
mWebView.setWebChromeClient(
new WebChromeClient() {
@Override
public void onReceivedTitle(WebView view, String title) {
setTitle(title);
super.onReceivedTitle(view, title);
}
@Override
public void onProgressChanged(WebView view, int newProgress) {
if (mProgressBar != null) {
mProgressBar.setProgress(newProgress);
int visible = newProgress == 100 ? View.INVISIBLE : View.VISIBLE;
mProgressBar.setVisibility(visible);
}
super.onProgressChanged(view, newProgress);
}
});
mWebView.setWebViewClient(
new WebViewClient() {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return super.shouldOverrideUrlLoading(view, url);
}
@Override
public void onReceivedError(
WebView view, WebResourceRequest request, WebResourceError error) {
mWebView.setVisibility(View.INVISIBLE);
view.stopLoading();
view.loadUrl("file:///android_asset/404.html");
super.onReceivedError(view, request, error);
}
@Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
}
});
mWebView.setDownloadListener(
new DownloadListener() {
@Override
public void onDownloadStart(
String url,
String userAgent,
String contentDisposition,
String mimetype,
long contentLength) {
if (!StringUtils.isNullOrEmpty(url)) {
Uri uri = Uri.parse(url);
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);
}
}
});
mProgressBar = (ProgressBar) findViewById(R.id.progressbar);
}