我使用超时布尔值设置20秒，超时应该发生，webview应该停止加载网页。这是代码：
Web.java
public class Web extends Activity {
private WebView webView;
final Activity activity = this;
public Uri imageUri;
Global ht;
boolean timeout = true;
ProgressDialog progressDialog;
private static final int FILECHOOSER_RESULTCODE = 2888;
private ValueCallback<Uri> mUploadMessage;
@SuppressWarnings("unused")
private Uri mCapturedImageURI = null;
public static final int REQUEST_SELECT_FILE = 100;
public ValueCallback<Uri[]> uploadMessage;
private ProgressBar progressBar;
Handler myHandler = new Handler(Looper.myLooper());
@SuppressWarnings("deprecation")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getWindow().requestFeature(Window.FEATURE_PROGRESS);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_web);
getWindow().setFeatureInt(Window.FEATURE_PROGRESS, Window.PROGRESS_VISIBILITY_ON);
progressBar = (ProgressBar) findViewById(R.id.progressBar);
myHandler = new Handler(Looper.myLooper());
progressBar.setMax(100);
ht = (Global) getApplicationContext();
webView = (WebView) findViewById(R.id.webView1);
webView.setWebViewClient(new MyWebViewClient());
final String url = "http://192.168.1.1";
webView.getSettings().setJavaScriptEnabled(true);
webView.loadUrl(url);
//webView.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
//webView.setLayerType(View.LAYER_TYPE_HARDWARE, null);
webView.getSettings().setRenderPriority(WebSettings.RenderPriority.HIGH);
webView.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);
webView.getSettings().setLoadWithOverviewMode(true);
webView.setFocusable(false);
webView.setFocusableInTouchMode(false);
//webView.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
if (Build.VERSION.SDK_INT >= 19) {
webView.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
} else {
webView.setLayerType(View.LAYER_TYPE_HARDWARE, null);
}
int DELAY = 1000;
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
public void run() {
webView.loadUrl(url);
}
}, DELAY);
/*Timer myTimer = new Timer();
//Start this timer when you create you task
myTimer.schedule(loaderTask, 3000); // 3000 is delay in millies*/
// webView.getSettings().setUseWideViewPort(true);
// Other webview settings
webView.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY);
webView.setScrollbarFadingEnabled(true);
webView.setVerticalScrollBarEnabled(false);
webView.getSettings().setBuiltInZoomControls(true);
webView.getSettings().setPluginState(PluginState.ON);
webView.getSettings().setAllowFileAccess(true);
webView.getSettings().setSupportZoom(true);
//webView.setLayerType(View.LAYER_TYPE_HARDWARE, null);
webView.setDownloadListener(new DownloadListener() {
public void onDownloadStart(String url, String userAgent,
String contentDisposition, String mimetype,
long contentLength) {
// for downloading directly through download manager
final String filename = URLUtil.guessFileName(url,
contentDisposition, mimetype);
DownloadManager.Request request = new DownloadManager.Request(
Uri.parse(url));
request.allowScanningByMediaScanner();
request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED); //Notify client once download is completed!
request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, filename);
DownloadManager dm = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
dm.enqueue(request);
Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT); //This is important!
intent.addCategory(Intent.CATEGORY_OPENABLE); //CATEGORY.OPENABLE
intent.setType("*/*");//any application,any extension
Toast.makeText(getApplicationContext(), "Downloading File", //To notify the Client that the file is being downloaded
Toast.LENGTH_LONG).show();
}
});
webView.setWebChromeClient(new WebChromeClient() {
public void onProgressChanged(WebView view, int progress) {
progressBar.setProgress(progress);
}
// The undocumented magic method override
// Eclipse will swear at you if you try to put @Override here
// For Android 3.0+
@SuppressWarnings("unused")
public void openFileChooser(ValueCallback<Uri> uploadMsg) {
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("*/*");
Web.this.startActivityForResult(
Intent.createChooser(i, "File Chooser"),
FILECHOOSER_RESULTCODE);
}
// For Android 3.0+
@SuppressWarnings({"unused", "rawtypes", "unchecked"})
public void openFileChooser(ValueCallback uploadMsg,
String acceptType) {
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("*/*");
Web.this.startActivityForResult(
Intent.createChooser(i, "File Browser"),
FILECHOOSER_RESULTCODE);
}
// For Android 4.1
@SuppressWarnings("unused")
public void openFileChooser(ValueCallback<Uri> uploadMsg,
String acceptType, String capture) {
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("*/*");
Web.this.startActivityForResult(
Intent.createChooser(i, "File Chooser"),
Web.FILECHOOSER_RESULTCODE);
}
// For Android 5.0+
@SuppressLint("NewApi")
public boolean onShowFileChooser(WebView mWebView,
ValueCallback<Uri[]> filePathCallback,
WebChromeClient.FileChooserParams fileChooserParams) {
if (uploadMessage != null) {
uploadMessage.onReceiveValue(null);
uploadMessage = null;
}
uploadMessage = filePathCallback;
Intent intent = null;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
intent = fileChooserParams.createIntent();
}
try {
startActivityForResult(intent, REQUEST_SELECT_FILE);
} catch (ActivityNotFoundException e) {
uploadMessage = null;
Toast.makeText(getApplicationContext(),
"Cannot Open File Chooser", Toast.LENGTH_LONG)
.show();
return false;
}
return true;
}
});
}
private class MyWebViewClient extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
@Override
public void onReceivedError(WebView view, WebResourceRequest request, WebResourceError error){
//Your code to do
try {
webView.stopLoading();
} catch (Exception e) {
}
if (webView.canGoBack()) {
webView.goBack();
}
webView.loadUrl("about:blank");
AlertDialog alertDialog = new AlertDialog.Builder(Web.this).create();
alertDialog.setTitle("Error");
alertDialog.setMessage("Could not load content Due to bad connectivity or invalid credentials");
alertDialog.setButton(DialogInterface.BUTTON_POSITIVE, "Try Again", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
finish();
startActivity(getIntent());
}
});
alertDialog.setButton(DialogInterface.BUTTON_NEGATIVE, "Exit", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_HOME);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
finish();
}
});
alertDialog.show();
}
/*public void onReceivedError(WebView webView, int errorCode, String description, String failingUrl) {
try {
webView.stopLoading();
} catch (Exception e) {
}
if (webView.canGoBack()) {
webView.goBack();
}
webView.loadUrl("about:blank");
AlertDialog alertDialog = new AlertDialog.Builder(Web.this).create();
alertDialog.setTitle("Error");
alertDialog.setMessage("Could not load content Due to bad connectivity or invalid credentials");
alertDialog.setButton(DialogInterface.BUTTON_POSITIVE, "Try Again", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
finish();
startActivity(getIntent());
}
});
alertDialog.setButton(DialogInterface.BUTTON_NEGATIVE, "Exit", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_HOME);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
finish();
}
});
alertDialog.show();
super.onReceivedError(webView, errorCode, description, failingUrl);
}
@TargetApi(android.os.Build.VERSION_CODES.M)
@Override
public void onReceivedError(WebView view, WebResourceRequest req, WebResourceError rerr) {
// Redirect to deprecated method, so you can use it in all SDK versions
onReceivedError(view, rerr.getErrorCode(), rerr.getDescription().toString(), req.getUrl().toString());
}*/
@Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
progressBar.setVisibility(View.VISIBLE);
progressBar.setProgress(0);
Toast.makeText(getApplicationContext(), "Gathering content, please wait", Toast.LENGTH_SHORT).show();
Runnable run = new Runnable() {
public void run() {
if (timeout) {
// do what you want
try {
webView.stopLoading();
} catch (Exception e) {
}
if (webView.canGoBack()) {
webView.goBack();
}
webView.loadUrl("about:blank");
AlertDialog alertDialog = new AlertDialog.Builder(Web.this).create();
alertDialog.setTitle("Error");
alertDialog.setMessage("Could not load content Due to bad connectivity or invalid credentials");
alertDialog.setButton(DialogInterface.BUTTON_POSITIVE, "Try Again", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
finish();
startActivity(getIntent());
}
});
alertDialog.setButton(DialogInterface.BUTTON_NEGATIVE, "Exit", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Intent i = new Intent(Web.this, LoginActivity2.class);
startActivity(i);
finish();
}
});
alertDialog.show();
}
}
};
myHandler.postDelayed(run, 20000);
}
@Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
progressBar.setVisibility(View.GONE);
progressBar.setProgress(100);
timeout = false;
}
public void onReceivedHttpAuthRequest(WebView view,
HttpAuthHandler handler, String host, String realm) {
handler.proceed("abc", "123");
// To change body of overridden methods use File| Settings| File Templates.
}
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (event.getAction() == KeyEvent.ACTION_DOWN) {
switch (keyCode) {
case KeyEvent.KEYCODE_BACK:
if (webView.canGoBack()) {
webView.goBack();
} else {
Intent i = new Intent(this, LoginActivity2.class);
startActivity(i);
finish();
}
return true;
}
}
return super.onKeyDown(keyCode, event);
}
@Override
protected void onActivityResult(int requestCode, int resultCode,
Intent intent) {
if (requestCode == FILECHOOSER_RESULTCODE) {
if (null == mUploadMessage)
return;
Uri result = intent == null || resultCode != RESULT_OK ? null
: intent.getData();
mUploadMessage.onReceiveValue(result);
mUploadMessage = null;
}
}
/*class loaderTask extends TimerTask {
public void run() {
System.out.println("Times Up");
if(isPageLoadedComplete){
}
}
}*/}
但每当我尝试插入错误的凭据时，布尔值“timeout”会被设置为false，而不是在页面开始加载时将其设置为true。我只在页面完全加载时（在我的onPageFinished（）中）将布尔值设置为false。最后页面没有结果。如果webView无法加载内容，如何设置超时时间的任何帮助对我都有帮助。我引用了这些链接，但没有奏效：
答案 0 :(得分：1)
最后得到了它：
@Override
public void onLoadResource(WebView view, String url) {
super.onLoadResource(view, url);
if(webView.getProgress()==100)
{
timeout = false;
}
}
从这个链接引用： Android WebView TimeOut