下面列出了怎么用android.webkit.WebView的API类实例代码及写法，或者点击链接到github查看源代码。
public static boolean isScrollingView(View view) {
if (ViewCatcherUtil.isViewPager(view)
|| view instanceof HorizontalScrollView
|| view instanceof WebView) {
return true;
} else if (ViewCatcherUtil.isRecyclerView(view)) {
RecyclerView recyclerView = (RecyclerView) view;
RecyclerView.LayoutManager manager = recyclerView.getLayoutManager();
if (manager != null) {
if (manager instanceof LinearLayoutManager) {
LinearLayoutManager linearManager = ((LinearLayoutManager) manager);
return linearManager.getOrientation() == RecyclerView.HORIZONTAL;
} else if (manager instanceof StaggeredGridLayoutManager) {
StaggeredGridLayoutManager gridLayoutManager =
(StaggeredGridLayoutManager) manager;
return gridLayoutManager.getOrientation() == RecyclerView.HORIZONTAL;
}
}
}
return false;
}
public TaskAddHtml(WebView webview, HttpFinishCallBack callBack) {
this.callBack = callBack;
List<MapConfigBean> list = LitePal.findAll(MapConfigBean.class);
List<String> name = new ArrayList<>();
for (MapConfigBean m : list) {
name.add(m.name);
}
webview.loadUrl("file:///android_asset/html/task.html");
webview.setWebViewClient(new WebViewClient() {
@Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
view.loadUrl(String.format("javascript:onLoad(\'%s\')", JSON.toJSONString(name)));
}
});
}
@SuppressLint("SetJavaScriptEnabled")
private void setUpWebView(int margin) {
LinearLayout webViewContainer = new LinearLayout(getContext());
webView = new WebView(getContext());
webView.setVerticalScrollBarEnabled(false);
webView.setHorizontalScrollBarEnabled(false);
webView.setWebViewClient(new DialogWebViewClient());
webView.getSettings().setJavaScriptEnabled(true);
webView.loadUrl(url);
webView.setLayoutParams(new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.MATCH_PARENT));
webView.setVisibility(View.INVISIBLE);
webView.getSettings().setSavePassword(false);
webViewContainer.setPadding(margin, margin, margin, margin);
webViewContainer.addView(webView);
webViewContainer.setBackgroundColor(BACKGROUND_GRAY);
contentFrameLayout.addView(webViewContainer);
}
public boolean shouldOverrideUrlLoading(WebView view, String url) {
try {
if (url.indexOf("?") > 0) {
String u = url.substring(0, url.indexOf("?"));
if (TextUtils.isEmpty(u)) {
return super.shouldOverrideUrlLoading(view, url);
}
if (PointsWeb.this.jumpType == 0) {
if (!".mp4".equals(u.substring(u.lastIndexOf("."), u.length())) || !url.contains("vtype=mp4")) {
return super.shouldOverrideUrlLoading(view, url);
}
view.stopLoading();
if (!PointsWeb.this.isFinish) {
Intent intent = new Intent("android.intent.action.VIEW");
intent.setDataAndType(Uri.parse(url), "video/mp4");
intent.putExtra("android.intent.extra.screenOrientation", 0);
PointsWeb.this.startActivity(intent);
}
return true;
}
}
} catch (Exception e) {
e.printStackTrace();
}
return super.shouldOverrideUrlLoading(view, url);
}
@Override
public boolean handle(WebView view, String url) {
if (TextUtils.isEmpty(url)) {
return false;
}
Uri uri = Uri.parse(url);
String path = uri.getPath();
if (TextUtils.equals(path, getPath())) {
String data = uri.getQueryParameter(KEY);
Data alertDialogData = null;
if (!TextUtils.isEmpty(data)) {
alertDialogData = GsonHelper.getInstance().fromJson(data, Data.class);
}
if (null == alertDialogData || !alertDialogData.valid()) {
return false;
}
return renderDialog((Activity) view.getContext(), view, alertDialogData);
}
return false;
}
@Override
public void onProgressChanged(WebView view, int newProgress) {
//加载的进度
progressBar.setProgress(newProgress);
if (newProgress == 100) {
Message msg = new Message();
msg.what = 5;
handler.sendMessageDelayed(msg, 300);
} else {
if (View.GONE == progressBar.getVisibility())
progressBar.setVisibility(View.VISIBLE);
}
super.onProgressChanged(view, newProgress);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
View view = inflater.inflate(R.layout.fragment_register, container, false);
SharedPreferences sharedPref
= getActivity().getApplicationContext().getSharedPreferences(PREFERENCES_FILE_NAME, Context.MODE_PRIVATE);
WebView webview = (WebView)view.findViewById(R.id.web);
pbar = (ProgressBar)view.findViewById(R.id.loading);
pbar.setVisibility(View.GONE);
webview.setWebViewClient(new WebViewClient());
webview.getSettings().setJavaScriptEnabled(true);
String registerURL = sharedPref.getString(REGLINK_TAG, null);
webview.loadUrl(registerURL);
return view;
}
public static void initWebViewSettings(WebView webView) {
WebSettings settings = webView.getSettings();
//这个单位是SP
settings.setDefaultFontSize(15);
settings.setJavaScriptEnabled(true); //支持js
settings.setUseWideViewPort(false); //将图片调整到适合webview的大小
settings.setSupportZoom(true); //支持缩放
settings.setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);//无论是否有网络，只要本地有缓存，都使用缓存。本地没有缓存时才从网络上获取。 这里的WebView主要是用来加载图片和解析Html文本
settings.setLayoutAlgorithm(WebSettings.LayoutAlgorithm.SINGLE_COLUMN); //支持内容重新布局
webView.setWebViewClient(new WebViewClient(){
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
//使超链接失效
return true;
}
});
}
@Override
public void onPageFinished(final WebView view, String url) {
System.out.println("page finished loading");
if (curstate!=guistate.review)
GoJsActivity.viewUrl("javascript:eidogo.autoPlayers[0].last()");
else if (!Reviews.isNotReviewStage) {
Reviews.advance();
}
if (curstate==guistate.markDeadStones)
GoJsActivity.viewUrl("javascript:eidogo.autoPlayers[0].detmarkx()");
final EventManager em = EventManager.getEventManager();
em.sendEvent(eventType.gobanReady);
// ask for comments to display them in big
System.out.println("page finished call detComments");
GoJsActivity.viewUrl("javascript:eidogo.autoPlayers[0].detComments()");
// also get the HTML of the page
GoJsActivity.viewUrl("javascript:console.log('MAGIC'+document.getElementsByTagName('html')[0].innerHTML);");
}
static void displayBanner() {
if (BuildConfig.DEBUG) {
Game.instance().runOnUiThread(new Runnable() {
@Override
public void run() {
LinearLayout layout = Game.instance().getLayout();
if (layout.getChildCount() == 1) {
WebView adView = new WebView(Game.instance());
int adViewHeight = Math.max(50, layout.getHeight() / 10);
ViewGroup.LayoutParams params = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, adViewHeight);
adView.setLayoutParams(params);
adView.loadDataWithBaseURL(null, Utils.format(adTemplate, "Рекламко"), "text/html", "utf-8", null);
Game.instance().getLayout().addView(adView, 0);
Game.setNeedSceneRestart(true);
}
}
});
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_function_introduced);
getSupportActionBar().setTitle(R.string.function_introduce);
mWebView = (WebView) findViewById(R.id.function_introdiced_webview);
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.getSettings().setUseWideViewPort(true);
mWebView.getSettings().setLoadWithOverviewMode(true);
mWebView.getSettings().setBuiltInZoomControls(true);
mWebView.getSettings().setSupportZoom(true);
MyWebViewClient mMyWebViewClient = new MyWebViewClient();
mMyWebViewClient.onPageFinished(mWebView, "http://rongcloud.cn/features");
mMyWebViewClient.shouldOverrideUrlLoading(mWebView, "http://rongcloud.cn/features");
mMyWebViewClient.onPageFinished(mWebView, "http://rongcloud.cn/features");
mWebView.setWebViewClient(mMyWebViewClient);
}
@SuppressLint("NewApi")
@Override
public void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
super.init();
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
if ( 0 != ( getApplicationInfo().flags &= ApplicationInfo.FLAG_DEBUGGABLE ) ) {
WebView.setWebContentsDebuggingEnabled(true);
}
}
if (checkScreenSize().equals("large") || checkScreenSize().equals("xlarge")) {
initiateApp("tablet");
} else {
initiateApp("smartphone");
}
}
public void resetView() {
setContentView(R.layout.activity_issue_preview);
((TextView) findViewById(R.id.title)).setText(Utils.stripTags(title));
final WebView web = (WebView) findViewById(R.id.detailsLabel);
web.loadDataWithBaseURL(null, details, "text/html", "utf-8", null);
web.setWebViewClient(new WebViewClient() {
public boolean shouldOverrideUrlLoading(WebView view, String url) {
try {
view.getContext().startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(url)));
} catch (Exception failed) {
return false;
}
return true;
}
});
}
@SuppressLint("SetJavaScriptEnabled")
private void initView(){
detail = (WebView) findViewById(R.id.wv_article_detail);
commentbar = (LinearLayout)findViewById(R.id.comment_bar);
title = (TextView)findViewById(R.id.top_bar_title);
toggle_btn = (ImageButton)findViewById(R.id.m_toggle);
back_btn = (ImageButton)findViewById(R.id.go_back);
detail.getSettings().setJavaScriptEnabled(true);
detail.loadUrl("file:///android_asset/about.html");
title.setText("关于我们");
back_btn.setVisibility(View.VISIBLE);
toggle_btn.setVisibility(View.GONE);
commentbar.setVisibility(View.GONE);
back_btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
onBackPressed();
}
});
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_web);
webView = (WebView) findViewById(R.id.webView);
webView.loadUrl("file:///android_asset/schame-test.html");
}
private static WebView createWebView(Context context) {
WebView webView = new WebView(context);
if (SDK_INT < LOLLIPOP) {
webView.setVisibility(VISIBLE);
} else {
webView.setVisibility(INVISIBLE);
}
webView.setLayoutParams(new RelativeLayout.LayoutParams(
ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
webView.setBackgroundColor(Color.TRANSPARENT);
prepareWebViewSettings(webView.getSettings());
return webView;
}
private static void exposeJsInterface(WebView webView, CordovaBridge bridge) {
if ((Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR1)) {
Log.i(TAG, "Disabled addJavascriptInterface() bridge since Android version is old.");
// Bug being that Java Strings do not get converted to JS strings automatically.
// This isn't hard to work-around on the JS side, but it's easier to just
// use the prompt bridge instead.
return;
}
SystemExposedJsApi exposedJsApi = new SystemExposedJsApi(bridge);
webView.addJavascriptInterface(exposedJsApi, "_cordovaNative");
}
@Override
public void onScaleChanged(WebView view, float oldScale, float newScale) {
super.onScaleChanged(view, oldScale, newScale);
if (newScale - oldScale > 7) {
view.setInitialScale((int) (oldScale / newScale * 100)); //异常放大，缩回去。
}
}
@Override
public void onCreate() {
super.onCreate();
ARouter.openLog(); // 打印日志
ARouter.openDebug(); // 开启调试模式(如果在InstantRun模式下运行，必须开启调试模式！线上版本需要关闭,否则有安全风险)
ARouter.init(this); // 尽可能早，推荐在Application中初始化
RxToast.init(this)
.setBackgroundColor("#CC000000")
.setTextColor("#FFFFFF")
.setGravity(Gravity.CENTER)
.setPadding(16, 16, 12, 12)
.setMaxLines(2)
.setTextSize(12)
.setZ(30)
.setMaxLines(3)
.apply();
Utils.init(this);
DoraemonKit.install(this);
// H5任意门功能需要，非必须
DoraemonKit.setWebDoorCallback(new WebDoorManager.WebDoorCallback() {
@Override
public void overrideUrlLoading(Context context, String s) {
// 使用自己的H5容器打开这个链接
WebView webView = new WebView(context);
webView.loadUrl(s);
}
});
}
@Override
public void onReceivedError(WebView view, int errorCode,
String description, String failingUrl) {
super.onReceivedError(view, errorCode, description, failingUrl);
ViewInject.toast("没有找到数据");
mWebView.loadDataWithBaseURL(null, "", "text/html", "utf-8", null);
}
@Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
Utility.logd(LOG_TAG, "Webview loading URL: " + url);
super.onPageStarted(view, url, favicon);
if (!isDetached) {
spinner.show();
}
}
/** Asynchronously open an AppEngine channel. */
@SuppressLint("SetJavaScriptEnabled")
public GAEChannelClient(
Activity activity, String token, MessageHandler handler) {
webView = new WebView(activity);
webView.getSettings().setJavaScriptEnabled(true);
webView.setWebChromeClient(new WebChromeClient() { // Purely for debugging.
public boolean onConsoleMessage (ConsoleMessage msg) {
Log.d(TAG, "console: " + msg.message() + " at " +
msg.sourceId() + ":" + msg.lineNumber());
return false;
}
});
webView.setWebViewClient(new WebViewClient() { // Purely for debugging.
public void onReceivedError(
WebView view, int errorCode, String description,
String failingUrl) {
Log.e(TAG, "JS error: " + errorCode + " in " + failingUrl +
", desc: " + description);
}
});
proxyingMessageHandler =
new ProxyingMessageHandler(activity, handler, token);
webView.addJavascriptInterface(
proxyingMessageHandler, "androidMessageHandler");
webView.loadUrl("file:///android_asset/channel.html");
}
private void configWebView() {
WebSettings settings = mWebView.getSettings();
settings.setJavaScriptEnabled(true);
settings.setDomStorageEnabled(true);
settings.setLoadsImagesAutomatically(true);
mWebView.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY);
mWebView.setWebViewClient(mWebViewClient);
mWebView.setWebChromeClient(mWebChromeClient);
}
public void initialize(Context context) {
if(isInitialized) return;
SharedPreferences pref = context.getSharedPreferences(context.getPackageName() + "_preferences", Context.MODE_PRIVATE);
if(pref.getBoolean("markdown", false) && Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
WebView webView = new WebView(context);
webView.loadUrl("about:blank");
isInitialized = true;
}
}
@SuppressLint("SetJavaScriptEnabled")
@Override
public void onPageFinished(WebView view, String url) {
view.getSettings().setJavaScriptEnabled(true);
super.onPageFinished(view, url);
// view.getSettings().setBlockNetworkImage(false);
addClickListener(view);//待网页加载完全后设置图片点击的监听方法
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_create_reply);
if (MainActivity.instance instanceof ForumConfig) {
HttpGetImageAction.fetchImage(this, MainActivity.instance.avatar, findViewById(R.id.icon));
} else {
((ImageView)findViewById(R.id.icon)).setImageResource(R.drawable.icon,80,80);
}
TextView text = (TextView) findViewById(R.id.topicText);
text.setText(MainActivity.post.topic);
CheckBox checkbox = (CheckBox) findViewById(R.id.replyToParentCheckBox);
if (MainActivity.post.parent != null && MainActivity.post.parent.length() != 0) {
checkbox.setChecked(true);
} else {
checkbox.setVisibility(View.GONE);
}
final WebView web = (WebView) findViewById(R.id.detailsLabel);
web.loadDataWithBaseURL(null, MainActivity.post.detailsText, "text/html", "utf-8", null);
web.setWebViewClient(new WebViewClient() {
public boolean shouldOverrideUrlLoading(WebView view, String url) {
try {
view.getContext().startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(url)));
} catch (Exception failed) {
return false;
}
return true;
}
});
}
/**
* On received http auth request.
* The method reacts on all registered authentication tokens. There is one and only one authentication token for any host + realm combination
*
* @param view
* @param handler
* @param host
* @param realm
*/
@Override
public void onReceivedHttpAuthRequest(WebView view, HttpAuthHandler handler, String host, String realm) {
// Get the authentication token
AuthenticationToken token = this.getAuthenticationToken(host, realm);
if (token != null) {
handler.proceed(token.getUserName(), token.getPassword());
}
else {
// Handle 401 like we'd normally do!
super.onReceivedHttpAuthRequest(view, handler, host, realm);
}
}
@Override
public boolean onShowFileChooser(final WebView webView, final ValueCallback<Uri[]> filePathCallback,
final FileChooserParams fileChooserParams) {
if (mFilePathCallback != null) {
mFilePathCallback.onReceiveValue(null);
}
mFilePathCallback = filePathCallback;
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.setType(TYPE_IMAGE);
startActivityForResult(intent, INPUT_FILE_REQUEST_CODE);
return true;
}
/**
* Tell the client to display a confirm dialog to the user.
*/
@Override
public boolean onJsConfirm(WebView view, String url, String message, final JsResult result) {
dialogsHelper.showConfirm(message, new CordovaDialogsHelper.Result() {
@Override
public void gotResult(boolean success, String value) {
if (success) {
result.confirm();
} else {
result.cancel();
}
}
});
return true;
}
@Override
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
super.onReceivedError(view, errorCode, description, failingUrl);
//6.0以下执行
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
return;
}
String mErrorUrl = "file:///android_asset/404_error.html";
view.loadUrl(mErrorUrl);
}