android.webkit.WebBackForwardList Java Examples

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (event.getAction() == KeyEvent.ACTION_DOWN && keyCode == KeyEvent.KEYCODE_BACK) {
        WebBackForwardList webBFL = webView.copyBackForwardList();
        int i = webBFL.getCurrentIndex();
        do {
            i--;
        }
        while (i >= 0 && webView.getOriginalUrl()
                .equals(webBFL.getItemAtIndex(i).getOriginalUrl()));
        if (webView.canGoBackOrForward(i - webBFL.getCurrentIndex())) {
            webView.goBackOrForward(i - webBFL.getCurrentIndex());
        } else {
            super.onBackPressed();
        }

        return true;
    }

    return false;
}
 

public void onPageFinished(WebView view) {
    if (!mIsOnReceivedTitle && mWebChromeClient != null) {
        WebBackForwardList list = null;
        try {
            list = view.copyBackForwardList();
        } catch (NullPointerException e) {
            if (LogUtils.isDebug()) {
                e.printStackTrace();
            }
        }
        if (list != null
                && list.getSize() > 0
                && list.getCurrentIndex() >= 0
                && list.getItemAtIndex(list.getCurrentIndex()) != null) {
            String previousTitle = list.getItemAtIndex(list.getCurrentIndex()).getTitle();
            mWebChromeClient.onReceivedTitle(view, previousTitle);
        }
    }
}
 

@Override
public boolean canGoBackOrForward(int steps) {
    int increment = steps < 0 ? -1 : 1;

    WebBackForwardList list = copyBackForwardList();

    int count = 0;
    int startIdx = list.getCurrentIndex();
    for (int i = startIdx + increment; i < list.getSize() && i >= 0; i += increment) {
        WebHistoryItem item = list.getItemAtIndex(i);

        if (!item.getOriginalUrl().startsWith("data:")) {
            count += increment;

            if (count == steps) {
                return true;
            }
        }
    }

    return false;
}
 

@Override
public void goBackOrForward(int steps) {
    int increment = steps < 0 ? -1 : 1;

    WebBackForwardList list = copyBackForwardList();

    int count = 0;
    int intCount = 0;
    int startIdx = list.getCurrentIndex();
    for (int i = startIdx + increment; i < list.getSize() && i >= 0; i += increment) {
        intCount += increment;
        WebHistoryItem item = list.getItemAtIndex(i);

        if (!item.getOriginalUrl().startsWith("data:")) {
            count += increment;

            if (count == steps) {
                super.goBackOrForward(intCount);
                return;
            }
        }
    }
}
 

private void _backEvent() {
    if (this.mWebView != null && this.mWebView.canGoBack()) {
        this.mWebView.stopLoading();
        LogInfo.log("+->", "mWebView-->>back" + this.mWebView.getUrl());
        WebBackForwardList list = this.mWebView.copyBackForwardList();
        if (list.getCurrentIndex() <= 0) {
            this.pullDownUrlText.setText(String.format(getString(R.string.supplied_by), new Object[]{getUrlTitle(list.getItemAtIndex(0).getUrl())}));
        } else {
            this.pullDownUrlText.setText(String.format(getString(R.string.supplied_by), new Object[]{getUrlTitle(list.getItemAtIndex(list.getCurrentIndex() - 1).getUrl())}));
            this.titleView.setText(list.getItemAtIndex(list.getCurrentIndex() - 1).getTitle());
        }
        this.mWebView.goBack();
        if (!this.close.isShown()) {
            this.close.setVisibility(0);
        }
    } else if ("floatBallActive".equals(this.web_flag)) {
        finish();
    } else {
        finish();
    }
}
 

@Override
public void backAction() {
    String curUrl = webView.getUrl();
    boolean isExit = true;
    if (!TextUtils.isEmpty(curUrl)) {
        if (webView.canGoBack()) {
            WebBackForwardList backList = webView.copyBackForwardList();

            if (backList != null && backList.getCurrentIndex() == 1) {
                isExit = false;
                loadLocalHtml(articleBean.getBody());
            }
        }
    }

    if (isExit) {
        mActivity.finish();
    }
}
 

public boolean startOfHistory()
{
    WebBackForwardList currentList = this.copyBackForwardList();
    WebHistoryItem item = currentList.getItemAtIndex(0);
    if( item!=null){	// Null-fence in case they haven't called loadUrl yet (CB-2458)
     String url = item.getUrl();
     String currentUrl = this.getUrl();
     LOG.d(TAG, "The current URL is: " + currentUrl);
     LOG.d(TAG, "The URL at item 0 is: " + url);
     return currentUrl.equals(url);
    }
    return false;
}
 

@Override
public boolean onConsumeBackEvent(FragmentManager fragmentManager) {
    WebBackForwardList webBackForwardList = this.mWebView.copyBackForwardList();

    //如果有回退历史，而且可回退，就消费该事件
    if (webBackForwardList.getSize() > 0 && this.mWebView.canGoBack()) {
        this.mWebView.goBack();
        return true;
    }

    return super.onConsumeBackEvent(fragmentManager);
}
 

public WebBackForwardList restoreState(Bundle savedInstanceState)
{
    WebBackForwardList myList = super.restoreState(savedInstanceState);
    Log.d(TAG, "WebView restoration crew now restoring!");
    //Initialize the plugin manager once more
    this.pluginManager.init();
    return myList;
}
 

public void printBackForwardList() {
    WebBackForwardList currentList = this.copyBackForwardList();
    int currentSize = currentList.getSize();
    for(int i = 0; i < currentSize; ++i)
    {
        WebHistoryItem item = currentList.getItemAtIndex(i);
        String url = item.getUrl();
        LOG.d(TAG, "The URL at index: " + Integer.toString(i) + " is " + url );
    }
}
 

public boolean startOfHistory()
{
    WebBackForwardList currentList = this.copyBackForwardList();
    WebHistoryItem item = currentList.getItemAtIndex(0);
    if( item!=null){	// Null-fence in case they haven't called loadUrl yet (CB-2458)
     String url = item.getUrl();
     String currentUrl = this.getUrl();
     LOG.d(TAG, "The current URL is: " + currentUrl);
     LOG.d(TAG, "The URL at item 0 is: " + url);
     return currentUrl.equals(url);
    }
    return false;
}
 

public WebBackForwardList restoreState(Bundle savedInstanceState)
{
    WebBackForwardList myList = super.restoreState(savedInstanceState);
    Log.d(TAG, "WebView restoration crew now restoring!");
    //Initialize the plugin manager once more
    this.pluginManager.init();
    return myList;
}
 

public void printBackForwardList() {
    WebBackForwardList currentList = this.copyBackForwardList();
    int currentSize = currentList.getSize();
    for(int i = 0; i < currentSize; ++i)
    {
        WebHistoryItem item = currentList.getItemAtIndex(i);
        String url = item.getUrl();
        LOG.d(TAG, "The URL at index: " + Integer.toString(i) + " is " + url );
    }
}
 

public boolean startOfHistory()
{
    WebBackForwardList currentList = this.copyBackForwardList();
    WebHistoryItem item = currentList.getItemAtIndex(0);
    if( item!=null){	// Null-fence in case they haven't called loadUrl yet (CB-2458)
     String url = item.getUrl();
     String currentUrl = this.getUrl();
     LOG.d(TAG, "The current URL is: " + currentUrl);
     LOG.d(TAG, "The URL at item 0 is: " + url);
     return currentUrl.equals(url);
    }
    return false;
}
 

public WebBackForwardList restoreState(Bundle savedInstanceState)
{
    WebBackForwardList myList = super.restoreState(savedInstanceState);
    Log.d(TAG, "WebView restoration crew now restoring!");
    //Initialize the plugin manager once more
    this.pluginManager.init();
    return myList;
}
 

public void printBackForwardList() {
    WebBackForwardList currentList = this.copyBackForwardList();
    int currentSize = currentList.getSize();
    for(int i = 0; i < currentSize; ++i)
    {
        WebHistoryItem item = currentList.getItemAtIndex(i);
        String url = item.getUrl();
        LOG.d(TAG, "The URL at index: " + Integer.toString(i) + " is " + url );
    }
}
 

public boolean startOfHistory()
{
    WebBackForwardList currentList = this.copyBackForwardList();
    WebHistoryItem item = currentList.getItemAtIndex(0);
    if( item!=null){	// Null-fence in case they haven't called loadUrl yet (CB-2458)
     String url = item.getUrl();
     String currentUrl = this.getUrl();
     LOG.d(TAG, "The current URL is: " + currentUrl);
     LOG.d(TAG, "The URL at item 0 is: " + url);
     return currentUrl.equals(url);
    }
    return false;
}
 

public WebBackForwardList restoreState(Bundle savedInstanceState)
{
    WebBackForwardList myList = super.restoreState(savedInstanceState);
    Log.d(TAG, "WebView restoration crew now restoring!");
    //Initialize the plugin manager once more
    this.pluginManager.init();
    return myList;
}
 

public void printBackForwardList() {
    WebBackForwardList currentList = this.copyBackForwardList();
    int currentSize = currentList.getSize();
    for(int i = 0; i < currentSize; ++i)
    {
        WebHistoryItem item = currentList.getItemAtIndex(i);
        String url = item.getUrl();
        LOG.d(TAG, "The URL at index: " + Integer.toString(i) + " is " + url );
    }
}
 

public boolean startOfHistory()
{
    WebBackForwardList currentList = this.copyBackForwardList();
    WebHistoryItem item = currentList.getItemAtIndex(0);
    if( item!=null){	// Null-fence in case they haven't called loadUrl yet (CB-2458)
     String url = item.getUrl();
     String currentUrl = this.getUrl();
     LOG.d(TAG, "The current URL is: " + currentUrl);
     LOG.d(TAG, "The URL at item 0 is: " + url);
     return currentUrl.equals(url);
    }
    return false;
}
 

public WebBackForwardList restoreState(Bundle savedInstanceState)
{
    WebBackForwardList myList = super.restoreState(savedInstanceState);
    Log.d(TAG, "WebView restoration crew now restoring!");
    //Initialize the plugin manager once more
    this.pluginManager.init();
    return myList;
}
 

public void printBackForwardList() {
    WebBackForwardList currentList = this.copyBackForwardList();
    int currentSize = currentList.getSize();
    for(int i = 0; i < currentSize; ++i)
    {
        WebHistoryItem item = currentList.getItemAtIndex(i);
        String url = item.getUrl();
        LOG.d(TAG, "The URL at index: " + Integer.toString(i) + " is " + url );
    }
}
 

public boolean startOfHistory()
{
    WebBackForwardList currentList = this.copyBackForwardList();
    WebHistoryItem item = currentList.getItemAtIndex(0);
    if( item!=null){	// Null-fence in case they haven't called loadUrl yet (CB-2458)
     String url = item.getUrl();
     String currentUrl = this.getUrl();
     LOG.d(TAG, "The current URL is: " + currentUrl);
     LOG.d(TAG, "The URL at item 0 is: " + url);
     return currentUrl.equals(url);
    }
    return false;
}
 

public WebBackForwardList restoreState(Bundle savedInstanceState)
{
    WebBackForwardList myList = super.restoreState(savedInstanceState);
    Log.d(TAG, "WebView restoration crew now restoring!");
    //Initialize the plugin manager once more
    this.pluginManager.init();
    return myList;
}
 

public void printBackForwardList() {
    WebBackForwardList currentList = this.copyBackForwardList();
    int currentSize = currentList.getSize();
    for(int i = 0; i < currentSize; ++i)
    {
        WebHistoryItem item = currentList.getItemAtIndex(i);
        String url = item.getUrl();
        LOG.d(TAG, "The URL at index: " + Integer.toString(i) + " is " + url );
    }
}
 

public boolean startOfHistory()
{
    WebBackForwardList currentList = this.copyBackForwardList();
    WebHistoryItem item = currentList.getItemAtIndex(0);
    if( item!=null){	// Null-fence in case they haven't called loadUrl yet (CB-2458)
     String url = item.getUrl();
     String currentUrl = this.getUrl();
     LOG.d(TAG, "The current URL is: " + currentUrl);
     LOG.d(TAG, "The URL at item 0 is: " + url);
     return currentUrl.equals(url);
    }
    return false;
}
 

public WebBackForwardList restoreState(Bundle savedInstanceState)
{
    WebBackForwardList myList = super.restoreState(savedInstanceState);
    Log.d(TAG, "WebView restoration crew now restoring!");
    //Initialize the plugin manager once more
    this.pluginManager.init();
    return myList;
}
 

private void getWebTitle(WebView view){
    WebBackForwardList forwardList = view.copyBackForwardList();
    WebHistoryItem item = forwardList.getCurrentItem();
    if (item != null) {
        tvTitle.setText(item.getTitle());
       // X5LogUtils.i("-------onReceivedTitle----getWebTitle---"+item.getTitle());
    }
}
 

@Override
public boolean onConsumeBackEvent(FragmentManager fragmentManager) {
    WebBackForwardList webBackForwardList = this.mWebView.copyBackForwardList();

    //如果有回退历史，而且可回退，就消费该事件
    if (webBackForwardList.getSize() > 0 && this.mWebView.canGoBack()) {
        this.mWebView.goBack();
        return true;
    }

    return super.onConsumeBackEvent(fragmentManager);
}
 

/**
 * Check if this is the last web item and the last fragment item.
 */
private void checkBackClickArrowVisibility()
{
    //will this be last item?
    WebBackForwardList sessionHistory = web3.copyBackForwardList();
    int nextIndex = sessionHistory.getCurrentIndex() - 1;
    if (backFragmentStack.peekLast() == null && nextIndex <= 0) back.setAlpha(0.3f);
    else back.setAlpha(1.0f);

    next.setAlpha(1.0f); //if we clicked back then we would have a next available
}