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所以基本上我有一个显示 HTML/PHP 页面的 webview，我想要做的是让这个 webview 不显示或不加载页面的某个部分或名为“xgDock”的 HTML“div”，如下所示“div”在 web 视图中无法正确显示，并且对于我的应用程序来说是不必要的。

非常感谢您抽出时间并提前致谢。

Answer 1

这是我的 webviewfragment.java

public class WebviewFragment extends Fragment implements BackPressFragment {

//Static
public static final String HIDE_NAVIGATION = "hide_navigation";
public static final String LOAD_DATA = "loadwithdata";

//References
private Activity mAct;
private FavDbAdapter mDbHelper;

//Layout with interaction
private WebView browser;
private SwipeRefreshLayout mSwipeRefreshLayout;

//Layouts
private ImageButton webBackButton;
private ImageButton webForwButton;
private LinearLayout ll;

//HTML5 video
private View mCustomView;
private int mOriginalSystemUiVisibility;
private WebChromeClient.CustomViewCallback mCustomViewCallback;

@SuppressLint("InflateParams")
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    //Return the existing layout if there is a savedInstance of this fragment
    if (savedInstanceState != null) { return ll; }

    ll = (LinearLayout) inflater.inflate(R.layout.fragment_webview,
            container, false);

    setHasOptionsMenu(true);

    browser = (WebView) ll.findViewById(R.id.webView);
    mSwipeRefreshLayout = (SwipeRefreshLayout) ll.findViewById(R.id.refreshlayout);

    // settings some settings like zooming etc in seperate method for
    // suppresslint
    browserSettings();

    browser.setWebViewClient(new WebViewClient() {
        // Make sure any url clicked is opened in webview
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            if ((url.contains("market://") || url.contains("mailto:")
                    || url.contains("play.google") || url.contains("tel:") || url
                    .contains("vid:")) == true) {
                // Load new URL Don't override URL Link
                view.getContext().startActivity(
                        new Intent(Intent.ACTION_VIEW, Uri.parse(url)));

                return true;
            }
            // Return true to override url loading (In this case do
            // nothing).
            return false;
        }

        @Override
        public void onPageFinished(WebView view, String url) {
            super.onPageFinished(browser, url);

            adjustControls();
        }

    });

    // has all to do with progress bar
    browser.setWebChromeClient(new WebChromeClient() {

        @Override
        public void onProgressChanged(WebView view, int progress) {
            if (mSwipeRefreshLayout.isRefreshing()) {
                if (progress == 100) {
                    mSwipeRefreshLayout.setRefreshing(false);
                }
            } else if (progress < 100){
                //If we do not hide the navigation, show refreshing
                if (!WebviewFragment.this.getArguments().containsKey(HIDE_NAVIGATION)  ||
                        WebviewFragment.this.getArguments().getBoolean(HIDE_NAVIGATION) == false)
                    mSwipeRefreshLayout.setRefreshing(true);
            }
        }

        @SuppressLint("InlinedApi")
        @Override
        public void onShowCustomView(View view,
                                     WebChromeClient.CustomViewCallback callback) {
            // if a view already exists then immediately terminate the new one
            if (mCustomView != null) {
                onHideCustomView();
                return;
            }

            // 1. Stash the current state
            mCustomView = view;
            mCustomView.setBackgroundColor(Color.BLACK);
            mOriginalSystemUiVisibility = getActivity().getWindow().getDecorView().getSystemUiVisibility();

            // 2. Stash the custom view callback
            mCustomViewCallback = callback;

            // 3. Add the custom view to the view hierarchy
            FrameLayout decor = (FrameLayout) getActivity().getWindow().getDecorView();
            decor.addView(mCustomView, new FrameLayout.LayoutParams(
                    ViewGroup.LayoutParams.MATCH_PARENT,
                    ViewGroup.LayoutParams.MATCH_PARENT));


            // 4. Change the state of the window
            getActivity().getWindow().getDecorView().setSystemUiVisibility(
                    View.SYSTEM_UI_FLAG_LAYOUT_STABLE |
                            View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION |
                            View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN |
                            View.SYSTEM_UI_FLAG_HIDE_NAVIGATION |
                            View.SYSTEM_UI_FLAG_FULLSCREEN |
                            View.SYSTEM_UI_FLAG_IMMERSIVE);
            getActivity().setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
        }

        @Override
        public void onHideCustomView() {
            // 1. Remove the custom view
            FrameLayout decor = (FrameLayout) getActivity().getWindow().getDecorView();
            decor.removeView(mCustomView);
            mCustomView = null;

            // 2. Restore the state to it's original form
            getActivity().getWindow().getDecorView()
                    .setSystemUiVisibility(mOriginalSystemUiVisibility);

            //TODO Find a better solution to the keyboard not showing after custom view is hidden
            //The user will come from landscape, so we'll first 'rotate' to portrait (rotation fixes a bug of the keybaord not showing)
            getActivity().setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
            //The we'll restore to the detected orientation (by immediately rotating back, the user should not notice any difference and/or flickering).
            getActivity().setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_FULL_SENSOR);

            // 3. Call the custom view callback
            mCustomViewCallback.onCustomViewHidden();
            mCustomViewCallback = null;


        }

    });

    browser.setDownloadListener(new DownloadListener() {
        public void onDownloadStart(String url, String userAgent,
                                    String contentDisposition, String mimetype,
                                    long contentLength) {
            Intent i = new Intent(Intent.ACTION_VIEW);
            i.setData(Uri.parse(url));
            startActivity(i);
        }
    });

    // setting an on touch listener
    browser.setOnTouchListener(new View.OnTouchListener() {
        @SuppressLint("ClickableViewAccessibility")
        @Override
        public boolean onTouch(View v, MotionEvent event) {
            switch (event.getAction()) {
                case MotionEvent.ACTION_DOWN:
                case MotionEvent.ACTION_UP:
                    if (!v.hasFocus()) {
                        v.requestFocus();
                    }
                    break;
            }
            return false;
        }
    });

    mSwipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
        @Override
        public void onRefresh() {
            browser.reload();
        }
    });

    return ll;
}// of oncreateview

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    mAct = getActivity();

    setRetainInstance(true);

    String weburl = getArguments().getStringArray(MainActivity.FRAGMENT_DATA)[0];
    String data = getArguments().containsKey(LOAD_DATA) ? getArguments().getString(LOAD_DATA) : null;
    if (checkConnectivity() || weburl.startsWith("file:///android_asset/")) {
        //If this is the first time, load the initial url, otherwise restore the view if necessairy
        if (savedInstanceState == null) {
            //If we have HTML data to load, do so, else load the url.
            if (data != null) {
                browser.loadDataWithBaseURL(weburl, data, "text/html", "UTF-8", "");
            } else {
                browser.loadUrl(weburl);
            }
        } else if (mCustomView != null){
            FrameLayout decor = (FrameLayout) getActivity().getWindow().getDecorView();
            ((ViewGroup) mCustomView.getParent()).removeView(mCustomView);
            decor.addView(mCustomView, new FrameLayout.LayoutParams(
                    ViewGroup.LayoutParams.MATCH_PARENT,
                    ViewGroup.LayoutParams.MATCH_PARENT));
        }
    }

}

@Override
public void onPause() {
    super.onPause();
    browser.onPause();
}

@Override
public void onResume() {
    super.onResume();
    browser.onResume();

    if (!this.getArguments().containsKey(HIDE_NAVIGATION)  ||
            this.getArguments().getBoolean(HIDE_NAVIGATION) == false){

        ActionBar actionBar = ((AppCompatActivity) mAct)
            .getSupportActionBar();

        if (mAct instanceof WebviewActivity) {
            actionBar.setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM | ActionBar.DISPLAY_SHOW_HOME | ActionBar.DISPLAY_SHOW_TITLE | ActionBar.DISPLAY_HOME_AS_UP);
        } else {
            actionBar.setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM | ActionBar.DISPLAY_SHOW_HOME | ActionBar.DISPLAY_SHOW_TITLE);
        }

        View view = mAct.getLayoutInflater().inflate(R.layout.fragment_webview_actionbar, null);
        LayoutParams lp = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, Gravity.END | Gravity.CENTER_VERTICAL);
        actionBar.setCustomView(view, lp);

        webBackButton = (ImageButton) mAct.findViewById(R.id.goBack);
        webForwButton = (ImageButton) mAct.findViewById(R.id.goForward);

        webBackButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (browser.canGoBack())
                    browser.goBack();
            }
        });
        webForwButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (browser.canGoForward())
                    browser.goForward();
            }
        });
    } else {
        mSwipeRefreshLayout.setEnabled(false);
    }

    adjustControls();
}

@Override
public void onStop() {
    super.onStop();

    if (!this.getArguments().containsKey(HIDE_NAVIGATION)  ||
            this.getArguments().getBoolean(HIDE_NAVIGATION) == false) {

        ActionBar actionBar = ((AppCompatActivity) getActivity())
                .getSupportActionBar();

        actionBar.setDisplayOptions(ActionBar.DISPLAY_SHOW_HOME | ActionBar.DISPLAY_SHOW_TITLE);
    }

}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
    case R.id.share:
        shareURL();
        return true;
    case R.id.favorite:
        mDbHelper = new FavDbAdapter(mAct);
        mDbHelper.open();

        String title = browser.getTitle();
        String url = browser.getUrl();

        if (mDbHelper.checkEvent(title, url, FavDbAdapter.KEY_WEB)) {
            // This item is new
            mDbHelper.addFavorite(title, url, FavDbAdapter.KEY_WEB);
            Toast toast = Toast.makeText(mAct,
                    getResources().getString(R.string.favorite_success),
                    Toast.LENGTH_LONG);
            toast.show();
        } else {
            Toast toast = Toast.makeText(mAct,
                    getResources().getString(R.string.favorite_duplicate),
                    Toast.LENGTH_LONG);
            toast.show();
        }
        return true;
    default:
        return super.onOptionsItemSelected(item);
    }
}

@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    inflater.inflate(R.menu.webview_menu, menu);
}

// Checking for an internet connection
private boolean checkConnectivity() {
    boolean enabled = true;

    ConnectivityManager connectivityManager = (ConnectivityManager) mAct
            .getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo info = connectivityManager.getActiveNetworkInfo();

    if ((info == null || !info.isConnected() || !info.isAvailable())) {
        enabled = false;

        Helper.noConnection(mAct);
    }

    return enabled;
}

public void adjustControls() {
    webBackButton = (ImageButton) mAct.findViewById(R.id.goBack);
    webForwButton = (ImageButton) mAct.findViewById(R.id.goForward);

    if (webBackButton == null || webForwButton == null) return;

    if (browser.canGoBack()) {
        webBackButton.setColorFilter(Color.argb(255, 255, 255, 255));
    } else {
        webBackButton.setColorFilter(Color.argb(255, 0, 0, 0));
    }
    if (browser.canGoForward()) {
        webForwButton.setColorFilter(Color.argb(255, 255, 255, 255));
    } else {
        webForwButton.setColorFilter(Color.argb(255, 0, 0, 0));
    }
}

// sharing
private void shareURL() {
    Intent shareIntent = new Intent(Intent.ACTION_SEND);
    shareIntent.setType("text/plain");
    String appname = getString(R.string.app_name);
    shareIntent.putExtra(Intent.EXTRA_TEXT,
            (getResources().getString(R.string.web_share_begin)) + appname
                    + getResources().getString(R.string.web_share_end)
                    + browser.getUrl());
    startActivity(Intent.createChooser(shareIntent, getResources()
            .getString(R.string.share)));
}

@SuppressLint("SetJavaScriptEnabled")
@SuppressWarnings("deprecation")
private void browserSettings() {
    // set javascript and zoom and some other settings
    browser.getSettings().setJavaScriptEnabled(true);
    browser.getSettings().setBuiltInZoomControls(true);
    browser.getSettings().setDisplayZoomControls(false);
    browser.getSettings().setAppCacheEnabled(true);
    browser.getSettings().setDatabaseEnabled(true);
    browser.getSettings().setDomStorageEnabled(true);
    browser.getSettings().setUseWideViewPort(true);
    browser.getSettings().setLoadWithOverviewMode(true);

    // enable all plugins (flash)
    browser.getSettings().setPluginState(PluginState.ON);
}

@Override
public boolean handleBackPress() {
    if (browser.canGoBack()){
        browser.goBack();
        return true;
    }

    return false;
}
 }

WebviewActivity.Java

public class WebviewActivity extends AppCompatActivity{

private Toolbar mToolbar;

//Options to load a webpage
public static String URL = "webview_url";
public static String OPEN_EXTERNAL = "open_external";
public static String LOAD_DATA = WebviewFragment.LOAD_DATA;
public static String HIDE_NAVIGATION = WebviewFragment.HIDE_NAVIGATION;

String mWebUrl = null;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_webview);
    mToolbar = (Toolbar) findViewById(R.id.toolbar_actionbar);
    setSupportActionBar(mToolbar);
    getSupportActionBar().setDisplayShowHomeEnabled(true);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);

    //Determine if we want to open this as intent or in the webview
    boolean openInWebView = true;
    if (getIntent().hasExtra(OPEN_EXTERNAL) && getIntent().getExtras().getBoolean(OPEN_EXTERNAL) == true){
        //If we have to load data directly, we can only do this locally
        if (getIntent().hasExtra(LOAD_DATA)) {
            openInWebView = false;
        }
    }

    //Determine if we would like to fragment to display navigation, based on the passed bundle arguments
    boolean hideNavigation = false;
    if (getIntent().hasExtra(HIDE_NAVIGATION) && getIntent().getExtras().getBoolean(HIDE_NAVIGATION) == true){
        hideNavigation = true;
    }

    String data = null;
    if (getIntent().hasExtra(LOAD_DATA)){
        data = getIntent().getExtras().getString(LOAD_DATA);
    }

    //opening the webview fragment with passed url
    if (getIntent().hasExtra(URL)){
        mWebUrl = getIntent().getExtras().getString(URL);
        if (openInWebView) {
            openWebFragmentForUrl(mWebUrl, hideNavigation, data);
        } else {
            Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(mWebUrl));
            startActivity(browserIntent);

            //Shutdown this activity
            finish();
        }
    }

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    return super.onCreateOptionsMenu(menu);
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
        case android.R.id.home:
            finish();
            return true;
        default:
            return super.onOptionsItemSelected(item);
    }
}


public void openWebFragmentForUrl(String url, boolean hideNavigation, String data){
    Fragment fragment;
    fragment = new WebviewFragment();

    // adding the data
    Bundle bundle = new Bundle();
    bundle.putStringArray(MainActivity.FRAGMENT_DATA, new String[]{url});
    bundle.putBoolean(WebviewFragment.HIDE_NAVIGATION, hideNavigation);
    if (data != null)
        bundle.putString(WebviewFragment.LOAD_DATA, data);
    fragment.setArguments(bundle);

    //Changing the fragment
    FragmentManager fragmentManager = getSupportFragmentManager();
    fragmentManager.beginTransaction().replace(R.id.container, fragment)
            .commit();

    //Setting the title
    if (data == null)
        setTitle(getResources().getString(R.string.webview_title));
    else
        setTitle("");
}

@Override
public void onBackPressed() {
    Fragment webview = getSupportFragmentManager().findFragmentById(R.id.container);

    if (webview instanceof BackPressFragment) {
        boolean handled = ((WebviewFragment)webview).handleBackPress();
        if (!handled)
            super.onBackPressed();
    } else {         
        super.onBackPressed();
    }
}
}

Answer 2

您有几种可能性：

• 您可以更新网站：
  您在请求中添加一个额外的参数，即： ?noxgdock
  您在 php 页面上检查此参数。如果存在，则不要添加它。
  这样，您就不会白白加载这个 div。

• 您无法更新网站：
  您可以在加载 DIV 后删除类似的内容：

  webView.loadUrl("javascript:(function() { " + "elem = document.getElementByName('xgDock'); if (elem) {elem.style.display = 'none; ';})()" );

或者您加载页面，删除div，然后才加载它。 （但如果你有身份验证、cookies，这可能会很痛苦）

Answer 3

您可以通过 webview

http://lexandera.html 将 javascript 注入到您的 HTML 内容中。 com/2009/01/injecting-javascript-into-a-webview/

从那里你可以 document.getElementByName("xgDock").style.xxxx 并用 CSS 隐藏 它。