下面列出了怎么用android.webkit.WebSettings.LayoutAlgorithm的API类实例代码及写法，或者点击链接到github查看源代码。
@Override
public void onPageFinished(WebView view, String url)
{
super.onPageFinished(view, url);
// Fix java.lang.NullPointerException at:
// android.view.animation.AnimationUtils.loadAnimation(AnimationUtils.java:71)
final Context context = getActivity();
if (shouldAnimate(url, context))
{
Utils.fadeOut(context, mProgressContainer);
Utils.fadeIn(context, mWebView);
}
// If picture enable zoom, else disable
final WebSettings ws = mWebView.getSettings();
final boolean isPicture = Utils.isPictUrl(url);
ws.setBuiltInZoomControls(isPicture);
ws.setSupportZoom(isPicture);
ws.setLoadWithOverviewMode(isPicture);
ws.setLayoutAlgorithm(isPicture ? LayoutAlgorithm.SINGLE_COLUMN : LayoutAlgorithm.NARROW_COLUMNS);
ws.setUseWideViewPort(isPicture);
}
public static void loadContentAdaptiveScreen(Context mContext,
WebView webview, String content) {
final String mimeType = "text/html";
final String encoding = "UTF-8";
webview.getSettings().setLayoutAlgorithm(LayoutAlgorithm.SINGLE_COLUMN);
webview.loadDataWithBaseURL("", content, mimeType, encoding, "");
}
@SuppressLint({"NewApi", "SetJavaScriptEnabled"})
@SuppressWarnings("deprecation")
private void initWebViewSettings() {
webView.setInitialScale(0);
webView.setVerticalScrollBarEnabled(false);
// Enable JavaScript
final WebSettings settings = webView.getSettings();
settings.setJavaScriptEnabled(true);
settings.setJavaScriptCanOpenWindowsAutomatically(true);
settings.setLayoutAlgorithm(LayoutAlgorithm.NORMAL);
String manufacturer = android.os.Build.MANUFACTURER;
LOG.d(TAG, "CordovaWebView is running on device made by: " + manufacturer);
//We don't save any form data in the application
settings.setSaveFormData(false);
settings.setSavePassword(false);
// Jellybean rightfully tried to lock this down. Too bad they didn't give us a whitelist
// while we do this
settings.setAllowUniversalAccessFromFileURLs(true);
settings.setMediaPlaybackRequiresUserGesture(false);
// Enable database
// We keep this disabled because we use or shim to get around DOM_EXCEPTION_ERROR_16
String databasePath = webView.getContext().getApplicationContext().getDir("database", Context.MODE_PRIVATE).getPath();
settings.setDatabaseEnabled(true);
settings.setDatabasePath(databasePath);
//Determine whether we're in debug or release mode, and turn on Debugging!
ApplicationInfo appInfo = webView.getContext().getApplicationContext().getApplicationInfo();
if ((appInfo.flags & ApplicationInfo.FLAG_DEBUGGABLE) != 0) {
enableRemoteDebugging();
}
settings.setGeolocationDatabasePath(databasePath);
// Enable DOM storage
settings.setDomStorageEnabled(true);
// Enable built-in geolocation
settings.setGeolocationEnabled(true);
// Enable AppCache
// Fix for CB-2282
settings.setAppCacheMaxSize(5 * 1048576);
settings.setAppCachePath(databasePath);
settings.setAppCacheEnabled(true);
// Fix for CB-1405
// Google issue 4641
String defaultUserAgent = settings.getUserAgentString();
// Fix for CB-3360
String overrideUserAgent = preferences.getString("OverrideUserAgent", null);
if (overrideUserAgent != null) {
settings.setUserAgentString(overrideUserAgent);
} else {
String appendUserAgent = preferences.getString("AppendUserAgent", null);
if (appendUserAgent != null) {
settings.setUserAgentString(defaultUserAgent + " " + appendUserAgent);
}
}
// End CB-3360
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(Intent.ACTION_CONFIGURATION_CHANGED);
if (this.receiver == null) {
this.receiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
settings.getUserAgentString();
}
};
webView.getContext().registerReceiver(this.receiver, intentFilter);
}
// end CB-1405
}
@SuppressLint({"NewApi", "SetJavaScriptEnabled"})
@SuppressWarnings("deprecation")
private void initWebViewSettings() {
webView.setInitialScale(0);
webView.setVerticalScrollBarEnabled(false);
// Enable JavaScript
final WebSettings settings = webView.getSettings();
settings.setJavaScriptEnabled(true);
settings.setJavaScriptCanOpenWindowsAutomatically(true);
settings.setLayoutAlgorithm(LayoutAlgorithm.NORMAL);
String manufacturer = android.os.Build.MANUFACTURER;
LOG.d(TAG, "CordovaWebView is running on device made by: " + manufacturer);
//We don't save any form data in the application
settings.setSaveFormData(false);
settings.setSavePassword(false);
// Jellybean rightfully tried to lock this down. Too bad they didn't give us a whitelist
// while we do this
settings.setAllowUniversalAccessFromFileURLs(true);
settings.setMediaPlaybackRequiresUserGesture(false);
// Enable database
// We keep this disabled because we use or shim to get around DOM_EXCEPTION_ERROR_16
String databasePath = webView.getContext().getApplicationContext().getDir("database", Context.MODE_PRIVATE).getPath();
settings.setDatabaseEnabled(true);
settings.setDatabasePath(databasePath);
//Determine whether we're in debug or release mode, and turn on Debugging!
ApplicationInfo appInfo = webView.getContext().getApplicationContext().getApplicationInfo();
if ((appInfo.flags & ApplicationInfo.FLAG_DEBUGGABLE) != 0) {
enableRemoteDebugging();
}
settings.setGeolocationDatabasePath(databasePath);
// Enable DOM storage
settings.setDomStorageEnabled(true);
// Enable built-in geolocation
settings.setGeolocationEnabled(true);
// Enable AppCache
// Fix for CB-2282
settings.setAppCacheMaxSize(5 * 1048576);
settings.setAppCachePath(databasePath);
settings.setAppCacheEnabled(true);
// Fix for CB-1405
// Google issue 4641
String defaultUserAgent = settings.getUserAgentString();
// Fix for CB-3360
String overrideUserAgent = preferences.getString("OverrideUserAgent", null);
if (overrideUserAgent != null) {
settings.setUserAgentString(overrideUserAgent);
} else {
String appendUserAgent = preferences.getString("AppendUserAgent", null);
if (appendUserAgent != null) {
settings.setUserAgentString(defaultUserAgent + " " + appendUserAgent);
}
}
// End CB-3360
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(Intent.ACTION_CONFIGURATION_CHANGED);
if (this.receiver == null) {
this.receiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
settings.getUserAgentString();
}
};
webView.getContext().registerReceiver(this.receiver, intentFilter);
}
// end CB-1405
}
@SuppressLint("SetJavaScriptEnabled")
@Override
public void setDefaultSetting(WebView view) {
WebSettingsCompat settings = WebSettingsCompat.get(view);
// JavaScript 支持
settings.setJavaScriptEnabled(true);
settings.setJavaScriptCanOpenWindowsAutomatically(true); // 允许 JavaScript 弹出窗口
// web 图片
settings.setLoadsImagesAutomatically(true);
// WebView 去除缩放功能但隐藏缩放控件
settings.setSupportZoom(false);
settings.setBuiltInZoomControls(false);
settings.setDisplayZoomControls(false);
// 自适应屏幕
settings.setUseWideViewPort(true);
// 加载模式
settings.setLoadWithOverviewMode(true);
// 保持表单和密码
settings.setSaveFormData(false);
settings.setSavePassword(false);
// 线程优先级调整
settings.setRenderPriority(RenderPriority.HIGH);
// 用WebView显示图片，可使用这个参数
settings.setLayoutAlgorithm(LayoutAlgorithm.NORMAL);
settings.setSupportMultipleWindows(true);
// LOAD_CACHE_ONLY: 不使用网络，只读取本地缓存数据
// LOAD_DEFAULT: 根据cache-control决定是否从网络上取数据
// LOAD_CACHE_NORMAL: API level 17中已经废弃, 从API level
// 11开始作用同LOAD_DEFAULT模式
// LOAD_NO_CACHE: 不使用缓存，只从网络获取数据
// LOAD_CACHE_ELSE_NETWORK: 只要本地有，无论是否过期、或者no-cache，都使用缓存中的数据
// www.taobao.com的cache-control为no-cache，在模式LOAD_DEFAULT下，无论如何都会从网络上取数据，如果没有网络，就会出现错误页面；
// 在LOAD_CACHE_ELSE_NETWORK模式下，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
settings.setCacheMode(WebSettings.LOAD_DEFAULT);
// 开启 DOM storage API 功能
settings.setDomStorageEnabled(true);
// 开启 database storage API 功能
settings.setDatabaseEnabled(true);
// 开启 Application Caches 功能
settings.setAppCacheEnabled(true);
// 设置最大缓存值 8M
settings.setAppCacheMaxSize(8 * 1024 * 1024);
settings.setPluginState(PluginStateCompat.ON_DEMAND);
// 可以读取内容缓存
settings.setAllowContentAccess(true);
// 可以读取文件缓存(manifest生效)
settings.setAllowFileAccess(true);
settings.setAllowFileAccessFromFileURLs(true);
settings.setAllowUniversalAccessFromFileURLs(true);
}
@Override
public void setLayoutAlgorithm(WebSettings settings, LayoutAlgorithm l) {
settings.setLayoutAlgorithm(l);
}
public void setLayoutAlgorithm(LayoutAlgorithm l) {
impl.setLayoutAlgorithm(settings, l);
}
@SuppressLint({"NewApi", "SetJavaScriptEnabled"})
@SuppressWarnings("deprecation")
private void initWebViewSettings() {
webView.setInitialScale(0);
webView.setVerticalScrollBarEnabled(false);
// Enable JavaScript
final WebSettings settings = webView.getSettings();
settings.setJavaScriptEnabled(true);
settings.setJavaScriptCanOpenWindowsAutomatically(true);
settings.setLayoutAlgorithm(LayoutAlgorithm.NORMAL);
String manufacturer = android.os.Build.MANUFACTURER;
LOG.d(TAG, "CordovaWebView is running on device made by: " + manufacturer);
//We don't save any form data in the application
settings.setSaveFormData(false);
settings.setSavePassword(false);
// Jellybean rightfully tried to lock this down. Too bad they didn't give us a whitelist
// while we do this
settings.setAllowUniversalAccessFromFileURLs(true);
settings.setMediaPlaybackRequiresUserGesture(false);
// Enable database
// We keep this disabled because we use or shim to get around DOM_EXCEPTION_ERROR_16
String databasePath = webView.getContext().getApplicationContext().getDir("database", Context.MODE_PRIVATE).getPath();
settings.setDatabaseEnabled(true);
settings.setDatabasePath(databasePath);
//Determine whether we're in debug or release mode, and turn on Debugging!
ApplicationInfo appInfo = webView.getContext().getApplicationContext().getApplicationInfo();
if ((appInfo.flags & ApplicationInfo.FLAG_DEBUGGABLE) != 0) {
enableRemoteDebugging();
}
settings.setGeolocationDatabasePath(databasePath);
// Enable DOM storage
settings.setDomStorageEnabled(true);
// Enable built-in geolocation
settings.setGeolocationEnabled(true);
// Enable AppCache
// Fix for CB-2282
settings.setAppCacheMaxSize(5 * 1048576);
settings.setAppCachePath(databasePath);
settings.setAppCacheEnabled(true);
// Fix for CB-1405
// Google issue 4641
String defaultUserAgent = settings.getUserAgentString();
// Fix for CB-3360
String overrideUserAgent = preferences.getString("OverrideUserAgent", null);
if (overrideUserAgent != null) {
settings.setUserAgentString(overrideUserAgent);
} else {
String appendUserAgent = preferences.getString("AppendUserAgent", null);
if (appendUserAgent != null) {
settings.setUserAgentString(defaultUserAgent + " " + appendUserAgent);
}
}
// End CB-3360
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(Intent.ACTION_CONFIGURATION_CHANGED);
if (this.receiver == null) {
this.receiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
settings.getUserAgentString();
}
};
webView.getContext().registerReceiver(this.receiver, intentFilter);
}
// end CB-1405
}
@SuppressLint({"NewApi", "SetJavaScriptEnabled"})
@SuppressWarnings("deprecation")
private void initWebViewSettings() {
webView.setInitialScale(0);
webView.setVerticalScrollBarEnabled(false);
// Enable JavaScript
final WebSettings settings = webView.getSettings();
settings.setJavaScriptEnabled(true);
settings.setJavaScriptCanOpenWindowsAutomatically(true);
settings.setLayoutAlgorithm(LayoutAlgorithm.NORMAL);
String manufacturer = android.os.Build.MANUFACTURER;
LOG.d(TAG, "CordovaWebView is running on device made by: " + manufacturer);
//We don't save any form data in the application
settings.setSaveFormData(false);
settings.setSavePassword(false);
// Jellybean rightfully tried to lock this down. Too bad they didn't give us a whitelist
// while we do this
settings.setAllowUniversalAccessFromFileURLs(true);
settings.setMediaPlaybackRequiresUserGesture(false);
// Enable database
// We keep this disabled because we use or shim to get around DOM_EXCEPTION_ERROR_16
String databasePath = webView.getContext().getApplicationContext().getDir("database", Context.MODE_PRIVATE).getPath();
settings.setDatabaseEnabled(true);
settings.setDatabasePath(databasePath);
//Determine whether we're in debug or release mode, and turn on Debugging!
ApplicationInfo appInfo = webView.getContext().getApplicationContext().getApplicationInfo();
if ((appInfo.flags & ApplicationInfo.FLAG_DEBUGGABLE) != 0) {
enableRemoteDebugging();
}
settings.setGeolocationDatabasePath(databasePath);
// Enable DOM storage
settings.setDomStorageEnabled(true);
// Enable built-in geolocation
settings.setGeolocationEnabled(true);
// Enable AppCache
// Fix for CB-2282
settings.setAppCacheMaxSize(5 * 1048576);
settings.setAppCachePath(databasePath);
settings.setAppCacheEnabled(true);
// Fix for CB-1405
// Google issue 4641
String defaultUserAgent = settings.getUserAgentString();
// Fix for CB-3360
String overrideUserAgent = preferences.getString("OverrideUserAgent", null);
if (overrideUserAgent != null) {
settings.setUserAgentString(overrideUserAgent);
} else {
String appendUserAgent = preferences.getString("AppendUserAgent", null);
if (appendUserAgent != null) {
settings.setUserAgentString(defaultUserAgent + " " + appendUserAgent);
}
}
// End CB-3360
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(Intent.ACTION_CONFIGURATION_CHANGED);
if (this.receiver == null) {
this.receiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
settings.getUserAgentString();
}
};
webView.getContext().registerReceiver(this.receiver, intentFilter);
}
// end CB-1405
}
@SuppressLint({"NewApi", "SetJavaScriptEnabled"})
@SuppressWarnings("deprecation")
private void initWebViewSettings() {
webView.setInitialScale(0);
webView.setVerticalScrollBarEnabled(false);
// Enable JavaScript
final WebSettings settings = webView.getSettings();
settings.setJavaScriptEnabled(true);
settings.setJavaScriptCanOpenWindowsAutomatically(true);
settings.setLayoutAlgorithm(LayoutAlgorithm.NORMAL);
String manufacturer = android.os.Build.MANUFACTURER;
LOG.d(TAG, "CordovaWebView is running on device made by: " + manufacturer);
//We don't save any form data in the application
settings.setSaveFormData(false);
settings.setSavePassword(false);
// Jellybean rightfully tried to lock this down. Too bad they didn't give us a whitelist
// while we do this
settings.setAllowUniversalAccessFromFileURLs(true);
settings.setMediaPlaybackRequiresUserGesture(false);
// Enable database
// We keep this disabled because we use or shim to get around DOM_EXCEPTION_ERROR_16
String databasePath = webView.getContext().getApplicationContext().getDir("database", Context.MODE_PRIVATE).getPath();
settings.setDatabaseEnabled(true);
settings.setDatabasePath(databasePath);
//Determine whether we're in debug or release mode, and turn on Debugging!
ApplicationInfo appInfo = webView.getContext().getApplicationContext().getApplicationInfo();
if ((appInfo.flags & ApplicationInfo.FLAG_DEBUGGABLE) != 0) {
enableRemoteDebugging();
}
settings.setGeolocationDatabasePath(databasePath);
// Enable DOM storage
settings.setDomStorageEnabled(true);
// Enable built-in geolocation
settings.setGeolocationEnabled(true);
// Enable AppCache
// Fix for CB-2282
settings.setAppCacheMaxSize(5 * 1048576);
settings.setAppCachePath(databasePath);
settings.setAppCacheEnabled(true);
// Fix for CB-1405
// Google issue 4641
String defaultUserAgent = settings.getUserAgentString();
// Fix for CB-3360
String overrideUserAgent = preferences.getString("OverrideUserAgent", null);
if (overrideUserAgent != null) {
settings.setUserAgentString(overrideUserAgent);
} else {
String appendUserAgent = preferences.getString("AppendUserAgent", null);
if (appendUserAgent != null) {
settings.setUserAgentString(defaultUserAgent + " " + appendUserAgent);
}
}
// End CB-3360
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(Intent.ACTION_CONFIGURATION_CHANGED);
if (this.receiver == null) {
this.receiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
settings.getUserAgentString();
}
};
webView.getContext().registerReceiver(this.receiver, intentFilter);
}
// end CB-1405
}
/**
* 用WebView显示图片，可使用这个参数
*/
public void setLayoutAlgorithm(WebSettings settings, LayoutAlgorithm l);