title | description |
---|---|
Inappbrowser |
Open an in-app browser window. |
AppVeyor | Travis CI |
---|---|
You can show helpful articles, videos, and web resources inside of your app. Users can view web pages without leaving your app.
To get a few ideas, check out the sample at the bottom of this page or go straight to the reference content.
This plugin provides a web browser view that displays when calling cordova.InAppBrowser.open()
.
var ref = cordova.InAppBrowser.open('http://apache.org', '_blank', 'location=yes');
The cordova.InAppBrowser.open()
function is defined to be a drop-in replacement
for the window.open()
function. Existing window.open()
calls can use the
InAppBrowser window, by replacing window.open:
window.open = cordova.InAppBrowser.open;
The InAppBrowser window behaves like a standard web browser, and can't access Cordova APIs. For this reason, the InAppBrowser is recommended if you need to load third-party (untrusted) content, instead of loading that into the main Cordova webview. The InAppBrowser is not subject to the whitelist, nor is opening links in the system browser.
The InAppBrowser provides by default its own GUI controls for the user (back, forward, done).
For backwards compatibility, this plugin also hooks window.open
.
However, the plugin-installed hook of window.open
can have unintended side
effects (especially if this plugin is included only as a dependency of another
plugin). The hook of window.open
will be removed in a future major release.
Until the hook is removed from the plugin, apps can manually restore the default
behaviour:
delete window.open // Reverts the call back to its prototype's default
Although window.open
is in the global scope, InAppBrowser is not available until after the deviceready
event.
document.addEventListener("deviceready", onDeviceReady, false);
function onDeviceReady() {
console.log("window.open works well");
}
Report issues with this plugin on the Apache Cordova issue tracker
##Fork Changes The intention is to harmonise the changes so they are available in both Android and IOS at least. We have extended the default functionality to support our more complex use case - the documentation seems to imply the IAB is used for opening basic pages/documents, it can now be used as a sub-system with JavaScript based event bridging. We have added the following, for iOS and Android only:
- Browsers opened with
_system
now work separately to other - now fire and forget, this also improved robustness when we tested. hide
andunhide
functionality - This puts the browser into the background on android and (by default) blanks the page to release resources. We found the stock browser performance relatively poor on start-up, so we can now open an IAB browser at startup and background it, improving UX. In iOS this closes the window and re-opens it with the same settings as the IAB was first opened with - mirroring the Android functionality. The iOS browser was relatively quick to open, so no performace difference is felt. Events are raised for hide and unhide, once hidden and "blanked" any CSS/JS you may have injected is removed, so you might need to re-establish this.- When a non
_system
window is loaded, this fork injects a JS-wrappered native object calledJSBridgeObject
- this has one methodrespond
which takes a string argument which is passed back to the main app via a newbridgeresponse
channel. It is intended to add native close and hide functionality to this object to allow native closing from the this object. - We have added monitoring for a special object -
{InaAppBrowserAction:"Hide"}
if either the injected JS or bridge response returns this, it will perform the hide action natively ("Close"
is also an option). This bypasses the need for the main app to respond to an event - when the IAB is visible the main app is running in tha background and the OS restricts its performance.
We use InAppBrowser in a non-standard way. The existing infrastructure had a couple of limitations on Android which we have attempted to redress:
- Browsers opened as _system we blanked, but not destroyed. On some devices this was enough to cause a crash
- The show method would crash if a _system window was opened, then closed, then the
cordova.InAppBrowser.show()
method called - We want to keep a persistent _self window open. Open creates a new instance, close blanks (and now destroys) it so it cannot be re-used. We have introduced new functions -
cordova.InAppBrowser.hide()
andcordova.InAppBrowser.unhide()
. These can be used as a direct replacement forcordova.InAppBrowser.show()
andcordova.InAppBrowser.close()
where you want to keep the instance alive - saving load time when opening the InAppBrowser, which can be substantial.cordova.InAppBrowser.hide()
takes an optional boolean - if set to true the browser is sent to about:blank to prevent uneccessary work on the device. Similarlycordova.InAppBrowser.unhide()
takes an optional URL to navigate to beforehand.
Due to time constraints we have so far been unable to get the IAB window to truly hide - hiding the IAB, or even it's direct parent resulted in a black screen. To keep the behavior consistent with Android the JavaScript side facade is retains these two methods, but opens/closes the window.
cordova plugin add cordova-plugin-inappbrowser
If you want all page loads in your app to go through the InAppBrowser, you can
simply hook window.open
during initialization. For example:
document.addEventListener("deviceready", onDeviceReady, false);
function onDeviceReady() {
window.open = cordova.InAppBrowser.open;
}
Opens a URL in a new InAppBrowser
instance, the current browser
instance, or the system browser.
var ref = cordova.InAppBrowser.open(url, target, options);
-
ref: Reference to the
InAppBrowser
window when the target is set to'_blank'
. (InAppBrowser) -
url: The URL to load (String). Call
encodeURI()
on this if the URL contains Unicode characters. -
target: The target in which to load the URL, an optional parameter that defaults to
_self
. (String)_self
: Opens in the Cordova WebView if the URL is in the white list, otherwise it opens in theInAppBrowser
._blank
: Opens in theInAppBrowser
._system
: Opens in the system's web browser.
-
options: Options for the
InAppBrowser
. Optional, defaulting to:location=yes
. (String)The
options
string must not contain any blank space, and each feature's name/value pairs must be separated by a comma. Feature names are case insensitive.All platforms support:
- location: Set to
yes
orno
to turn theInAppBrowser
's location bar on or off.
Android supports these additional options:
- hidden: set to
yes
to create the browser and load the page, but not show it. The loadstop event fires when loading is complete. Omit or set tono
(default) to have the browser open and load normally. - beforeload: set to enable the
beforeload
event to modify which pages are actually loaded in the browser. Accepted values areget
to intercept only GET requests,post
to intercept on POST requests oryes
to intercept both GET & POST requests. Note that POST requests are not currently supported and will be ignored (if you setbeforeload=post
it will raise an error). - clearcache: set to
yes
to have the browser's cookie cache cleared before the new window is opened - clearsessioncache: set to
yes
to have the session cookie cache cleared before the new window is opened - closebuttoncaption: set to a string to use as the close button's caption instead of a X. Note that you need to localize this value yourself.
- closebuttoncolor: set to a valid hex color string, for example:
#00ff00
, and it will change the close button color from default, regardless of being a text or default X. Only has effect if user has location set toyes
. - footer: set to
yes
to show a close button in the footer similar to the iOS Done button. The close button will appear the same as for the header hence use closebuttoncaption and closebuttoncolor to set its properties. - footercolor: set to a valid hex color string, for example
#00ff00
or#CC00ff00
(#aarrggbb
) , and it will change the footer color from default. Only has effect if user has footer set toyes
. - hardwareback: set to
yes
to use the hardware back button to navigate backwards through theInAppBrowser
's history. If there is no previous page, theInAppBrowser
will close. The default value isyes
, so you must set it tono
if you want the back button to simply close the InAppBrowser. - hidenavigationbuttons: set to
yes
to hide the navigation buttons on the location toolbar, only has effect if user has location set toyes
. The default value isno
. - hideurlbar: set to
yes
to hide the url bar on the location toolbar, only has effect if user has location set toyes
. The default value isno
. - navigationbuttoncolor: set to a valid hex color string, for example:
#00ff00
, and it will change the color of both navigation buttons from default. Only has effect if user has location set toyes
and not hidenavigationbuttons set toyes
. - toolbarcolor: set to a valid hex color string, for example:
#00ff00
, and it will change the color the toolbar from default. Only has effect if user has location set toyes
. - lefttoright: Set to
yes
to swap positions of the navigation buttons and the close button. Specifically, navigation buttons go to the left and close button to the right. - zoom: set to
yes
to show Android browser's zoom controls, set tono
to hide them. Default value isyes
. - mediaPlaybackRequiresUserAction: Set to
yes
to prevent HTML5 audio or video from autoplaying (defaults tono
). - shouldPauseOnSuspend: Set to
yes
to make InAppBrowser WebView to pause/resume with the app to stop background audio (this may be required to avoid Google Play issues like described in CB-11013). - useWideViewPort: Sets whether the WebView should enable support for the "viewport" HTML meta tag or should use a wide viewport. When the value of the setting is
no
, the layout width is always set to the width of the WebView control in device-independent (CSS) pixels. When the value isyes
and the page contains the viewport meta tag, the value of the width specified in the tag is used. If the page does not contain the tag or does not provide a width, then a wide viewport will be used. (defaults toyes
).
iOS supports these additional options:
- usewkwebview: set to
yes
to use WKWebView engine for the InappBrowser. Omit or set tono
(default) to use UIWebView. Note: Usingusewkwebview=yes
requires that a WKWebView engine plugin be installed in the Cordova project (e.g. cordova-plugin-wkwebview-engine or cordova-plugin-ionic-webview). - hidden: set to
yes
to create the browser and load the page, but not show it. The loadstop event fires when loading is complete. Omit or set tono
(default) to have the browser open and load normally. - beforeload: set to enable the
beforeload
event to modify which pages are actually loaded in the browser. Accepted values areget
to intercept only GET requests,post
to intercept on POST requests oryes
to intercept both GET & POST requests. Note that POST requests are not currently supported and will be ignored (if you setbeforeload=post
it will raise an error). - clearcache: set to
yes
to have the browser's cookie cache cleared before the new window is opened - clearsessioncache: set to
yes
to have the session cookie cache cleared before the new window is opened. For WKWebView, requires iOS 11+ on target device. - cleardata: set to
yes
to have the browser's entire local storage cleared (cookies, HTML5 local storage, IndexedDB, etc.) before the new window is opened - closebuttoncolor: set as a valid hex color string, for example:
#00ff00
, to change from the default Done button's color. Only applicable if toolbar is not disabled. - closebuttoncaption: set to a string to use as the Done button's caption. Note that you need to localize this value yourself.
- disallowoverscroll: Set to
yes
orno
(default isno
). Turns on/off the UIWebViewBounce property. - hidenavigationbuttons: set to
yes
orno
to turn the toolbar navigation buttons on or off (defaults tono
). Only applicable if toolbar is not disabled. - navigationbuttoncolor: set as a valid hex color string, for example:
#00ff00
, to change from the default color. Only applicable if navigation buttons are visible. - toolbar: set to
yes
orno
to turn the toolbar on or off for the InAppBrowser (defaults toyes
) - toolbarcolor: set as a valid hex color string, for example:
#00ff00
, to change from the default color of the toolbar. Only applicable if toolbar is not disabled. - toolbartranslucent: set to
yes
orno
to make the toolbar translucent(semi-transparent) (defaults toyes
). Only applicable if toolbar is not disabled. - lefttoright: Set to
yes
to swap positions of the navigation buttons and the close button. Specifically, close button goes to the right and navigation buttons to the left. - enableViewportScale: Set to
yes
orno
to prevent viewport scaling through a meta tag (defaults tono
). Only applicable to UIWebView (usewkwebview=no
) and WKWebView (usewkwebview=yes
) on iOS 10+. - mediaPlaybackRequiresUserAction: Set to
yes
to prevent HTML5 audio or video from autoplaying (defaults tono
). Applicable to UIWebView (usewkwebview=no
) and WKWebView (usewkwebview=yes
). - allowInlineMediaPlayback: Set to
yes
orno
to allow in-line HTML5 media playback, displaying within the browser window rather than a device-specific playback interface. The HTML'svideo
element must also include thewebkit-playsinline
attribute (defaults tono
). Applicable to UIWebView (usewkwebview=no
) and WKWebView (usewkwebview=yes
). - keyboardDisplayRequiresUserAction: Set to
yes
orno
to open the keyboard when form elements receive focus via JavaScript'sfocus()
call (defaults toyes
). Only applicable to UIWebView (usewkwebview=no
). - suppressesIncrementalRendering: Set to
yes
orno
to wait until all new view content is received before being rendered (defaults tono
). Only applicable to UIWebView (usewkwebview=no
). - presentationstyle: Set to
pagesheet
,formsheet
orfullscreen
to set the presentation style (defaults tofullscreen
). - transitionstyle: Set to
fliphorizontal
,crossdissolve
orcoververtical
to set the transition style (defaults tocoververtical
). - toolbarposition: Set to
top
orbottom
(default isbottom
). Causes the toolbar to be at the top or bottom of the window. - hidespinner: Set to
yes
orno
to change the visibility of the loading indicator (defaults tono
).
Windows supports these additional options:
- hidden: set to
yes
to create the browser and load the page, but not show it. The loadstop event fires when loading is complete. Omit or set tono
(default) to have the browser open and load normally. - hardwareback: works the same way as on Android platform.
- fullscreen: set to
yes
to create the browser control without a border around it. Please note that if location=no is also specified, there will be no control presented to user to close IAB window.
- location: Set to
- Android
- Browser
- iOS
- OSX
- Windows
var ref = cordova.InAppBrowser.open('http://apache.org', '_blank', 'location=yes');
var ref2 = cordova.InAppBrowser.open(encodeURI('http://ja.m.wikipedia.org/wiki/ハングル'), '_blank', 'location=yes');
At the moment the only supported target in OSX is _system
.
_blank
and _self
targets are not yet implemented and are ignored silently. Pull requests and patches to get these to work are greatly appreciated.
-
Plugin is implemented via iframe,
-
Navigation history (
back
andforward
buttons in LocationBar) is not implemented.
The object returned from a call to cordova.InAppBrowser.open
when the target is set to '_blank'
.
- addEventListener
- removeEventListener
- close
- show
- hide
- executeScript
- insertCSS
Adds a listener for an event from the
InAppBrowser
. (Only available when the target is set to'_blank'
)
ref.addEventListener(eventname, callback);
-
ref: reference to the
InAppBrowser
window (InAppBrowser) -
eventname: the event to listen for (String)
- loadstart: event fires when the
InAppBrowser
starts to load a URL. - loadstop: event fires when the
InAppBrowser
finishes loading a URL. - loaderror: event fires when the
InAppBrowser
encounters an error when loading a URL. - exit: event fires when the
InAppBrowser
window is closed. - beforeload: event fires when the
InAppBrowser
decides whether to load an URL or not (only with optionbeforeload
set). - message: event fires when the
InAppBrowser
receives a message posted from the page loaded inside theInAppBrowser
Webview.
- loadstart: event fires when the
-
callback: the function that executes when the event fires. The function is passed an
InAppBrowserEvent
object as a parameter.
var inAppBrowserRef;
function showHelp(url) {
var target = "_blank";
var options = "location=yes,hidden=yes,beforeload=yes";
inAppBrowserRef = cordova.InAppBrowser.open(url, target, options);
inAppBrowserRef.addEventListener('loadstart', loadStartCallBack);
inAppBrowserRef.addEventListener('loadstop', loadStopCallBack);
inAppBrowserRef.addEventListener('loaderror', loadErrorCallBack);
inAppBrowserRef.addEventListener('beforeload', beforeloadCallBack);
inAppBrowserRef.addEventListener('message', messageCallBack);
}
function loadStartCallBack() {
$('#status-message').text("loading please wait ...");
}
function loadStopCallBack() {
if (inAppBrowserRef != undefined) {
inAppBrowserRef.insertCSS({ code: "body{font-size: 25px;}" });
inAppBrowserRef.executeScript({ code: "\
var message = 'this is the message';\
var messageObj = {my_message: message};\
var stringifiedMessageObj = JSON.stringify(messageObj);\
webkit.messageHandlers.cordova_iab.postMessage(stringifiedMessageObj);"
});
$('#status-message').text("");
inAppBrowserRef.show();
}
}
function loadErrorCallBack(params) {
$('#status-message').text("");
var scriptErrorMesssage =
"alert('Sorry we cannot open that page. Message from the server is : "
+ params.message + "');"
inAppBrowserRef.executeScript({ code: scriptErrorMesssage }, executeScriptCallBack);
inAppBrowserRef.close();
inAppBrowserRef = undefined;
}
function executeScriptCallBack(params) {
if (params[0] == null) {
$('#status-message').text(
"Sorry we couldn't open that page. Message from the server is : '"
+ params.message + "'");
}
}
function beforeloadCallBack(params, callback) {
if (params.url.startsWith("http://www.example.com/")) {
// Load this URL in the inAppBrowser.
callback(params.url);
} else {
// The callback is not invoked, so the page will not be loaded.
$('#status-message').text("This browser only opens pages on http://www.example.com/");
}
}
function messageCallBack(params){
$('#status-message').text("message received: "+params.data.my_message);
}
-
type: the eventname, either
loadstart
,loadstop
,loaderror
,message
orexit
. (String) -
url: the URL that was loaded. (String)
-
code: the error code, only in the case of
loaderror
. (Number) -
message: the error message, only in the case of
loaderror
. (String) -
data: the message contents , only in the case of
message
. A stringified JSON object. (String)
- Android
- Browser
- iOS
- Windows
- OSX
loadstop
is being fired after a customscheme
event. The event URL is that of the currently loaded page, not the URL with the custom scheme.
loadstart
, loaderror
, message
events are not fired.
message
event is not fired.
var ref = cordova.InAppBrowser.open('http://apache.org', '_blank', 'location=yes');
ref.addEventListener('loadstart', function(event) { alert(event.url); });
Removes a listener for an event from the
InAppBrowser
. (Only available when the target is set to'_blank'
)
ref.removeEventListener(eventname, callback);
-
ref: reference to the
InAppBrowser
window. (InAppBrowser) -
eventname: the event to stop listening for. (String)
- loadstart: event fires when the
InAppBrowser
starts to load a URL. - loadstop: event fires when the
InAppBrowser
finishes loading a URL. - loaderror: event fires when the
InAppBrowser
encounters an error loading a URL. - exit: event fires when the
InAppBrowser
window is closed. - message: event fires when the
InAppBrowser
receives a message posted from the page loaded inside theInAppBrowser
Webview. - customscheme: event fires when a link is followed that matches
AllowedSchemes
(Android, iOS).
- loadstart: event fires when the
-
callback: the function to execute when the event fires. The function is passed an
InAppBrowserEvent
object.
- Android
- Browser
- iOS
- Windows
var ref = cordova.InAppBrowser.open('http://apache.org', '_blank', 'location=yes');
var myCallback = function(event) { alert(event.url); }
ref.addEventListener('loadstart', myCallback);
ref.removeEventListener('loadstart', myCallback);
Closes the
InAppBrowser
window.
ref.close();
- ref: reference to the
InAppBrowser
window (InAppBrowser)
- Android
- Browser
- iOS
- Windows
var ref = cordova.InAppBrowser.open('http://apache.org', '_blank', 'location=yes');
ref.close();
Displays an InAppBrowser window that was opened hidden. Calling this has no effect if the InAppBrowser was already visible.
ref.show();
- ref: reference to the InAppBrowser window (
InAppBrowser
)
- Android
- Browser
- iOS
- Windows
var ref = cordova.InAppBrowser.open('http://apache.org', '_blank', 'hidden=yes');
// some time later...
ref.show();
Hides the InAppBrowser window. Calling this has no effect if the InAppBrowser was already hidden.
ref.hide();
- ref: reference to the InAppBrowser window (
InAppBrowser
)
- Android
- iOS
- Windows
var ref = cordova.InAppBrowser.open('http://apache.org', '_blank');
// some time later...
ref.hide();
Injects JavaScript code into the
InAppBrowser
window. (Only available when the target is set to'_blank'
)
ref.executeScript(details, callback);
-
ref: reference to the
InAppBrowser
window. (InAppBrowser) -
injectDetails: details of the script to run, specifying either a
file
orcode
key. (Object)- file: URL of the script to inject.
- code: Text of the script to inject.
-
callback: the function that executes after the JavaScript code is injected.
- If the injected script is of type
code
, the callback executes with a single parameter, which is the return value of the script, wrapped in anArray
. For multi-line scripts, this is the return value of the last statement, or the last expression evaluated.
- If the injected script is of type
- Android
- Browser
- iOS
- Windows
var ref = cordova.InAppBrowser.open('http://apache.org', '_blank', 'location=yes');
ref.addEventListener('loadstop', function() {
ref.executeScript({file: "myscript.js"});
});
- only code key is supported.
Due to MSDN docs the invoked script can return only string values, otherwise the parameter, passed to callback will be [null]
.
Injects CSS into the
InAppBrowser
window. (Only available when the target is set to'_blank'
)
ref.insertCSS(details, callback);
-
ref: reference to the
InAppBrowser
window (InAppBrowser) -
injectDetails: details of the script to run, specifying either a
file
orcode
key. (Object)- file: URL of the stylesheet to inject.
- code: Text of the stylesheet to inject.
-
callback: the function that executes after the CSS is injected.
- Android
- iOS
- Windows
var ref = cordova.InAppBrowser.open('http://apache.org', '_blank', 'location=yes');
ref.addEventListener('loadstop', function() {
ref.insertCSS({file: "mystyles.css"});
});
__
Shows the
InAppBrowser
if opened with the hidden option true.
ref.hide(newUrl);
-
ref: reference to the
InAppBrowser
window (InAppBrowser) . Must be hidden to take effect. -
newUrl: Optional, The new URL to navigate to before showing(waits for page load to finish). (String)
- Android
var ref = cordova.InAppBrowser.open('http://apache.org', '_system', 'location=yes, hidden=yes');
//Should really wait until the page loadstop event
ref.show("http://www.google.com");
__
Hides the
InAppBrowser
for non _system windows.
ref.hide(blankUrl);
-
ref: reference to the
InAppBrowser
window (InAppBrowser) . Must have target '_blank' or '_self' to take effect. -
blankUrl: Optional, If, true if the browser navigates to about:blank to preserve resources before hide. (Boolean)
- Does not operate with the
_system
option. - Android
- iOS (see IOS ONLY section above -
blankUrl
has no effect, same astrue
under Android).
var ref = cordova.InAppBrowser.open('http://apache.org', '_blank', 'location=yes');
ref.hide();
__
unhides the
InAppBrowser
for non _system windows. The widow should previously have been hidden, thoughuhide
also should work with IAB instances that have started withhidden=true
.
ref.unhide(newUrl);
- newUrl: The url to navigate to before unhiding, if using iOS, or the
hide
method was calledblankUrl
unset or set totrue
you should supply this, otherwise you will get a blank page. The page is unhidden on the new URL's loadstop event, if for any reason this is not triggered the IAB will not display.
- Does not operate with the
_system
option. - Android
- iOS (see IOS ONLY section above, really a new instance is opened with the same settings as it was opened with).
var ref = cordova.InAppBrowser.open('http://apache.org', '_blank', 'location=yes');
ref.hide();
//Should really do this on the 'hidden' event
ref.unhide('');
__
A few points, first our use case is for android and iOS only - changes have only been made with these operating systems. We have provided:
- The ability to interact with native code from the IAB javascript in a limited way (only
close
andhide
) from the IAB JavaScript context / 'executeScript'. You can inject JavaScript from the app which returns a specific object to do this:{InAppBrowserAction: "hide"}
where the action can be eitherhide
orclose
. When processed the relevant event(s) will be raised. This provides an extensibility point for future forks, and bypasses the need for the app iteslf to respond initially - the task is backgrounded will be running slowly. If the object does not follow the structure specified it will be just returned to the main app - it is worth checking the system logs if this happens unexpectedly for mor information. - An object
JSBridgeObject
which has arespond
method. If the object passed (represented as a JSON string) into this method is one of the native action ones, it is handled the same way as above. Otherwise the string is passed back through a newbridgeresponse
event.
Assuming your loaded page has an object bridge
with a value eventName
:
var innerScript = [
'if (bridge && bridge.eventname) {',
'if (bridge.eventName === \'hide\') {',
'return { InAppBrowserAction:"hide" };',
'}',
'return {myEventName: bridge.eventname};',
'}'
].join(''),
pollScript = 'setInterval(function(){ return JSON.stringify(' + innerScript + '); },500);',
ref = cordova.InAppBrowser.open('http://mypage.org', '_blank', 'location=yes');
function appEventHandler (data){
alert(JSON.parse(data).myEventName);
}
ref.executeScript(pollScript, appEventHandler);
This method caused problems with older versions of iOS (it updates the url, refeshing the page and causing other events to fire. This also disrupted the polling, which no longer fired.). It also is less readily extensible, we suggest the next method of establishing a brdge.
//innerScript is the same as the previous sample
var innerScript = [
'if (bridge && bridge.eventname) {',
'if (bridge.eventName === \'hide\') {',
'return { InAppBrowserAction:"hide" };',
'}',
'return {myEventName: bridge.eventname};',
'}'
].join(''),
//pollScript only differs in calling the bridge respond method rather than returning
pollScript = 'setInterval(function(){ JavaScriptBridgeInterfaceObject.respond((JSON.stringify(' + innerScript + ')); },500);',
ref = cordova.InAppBrowser.open('http://mypage.org', '_blank', 'location=yes');
//Again, this is the same handler as the previous example, it is just isn't passed as a callback on execute anymore.
function appEventHandler (data){
alert(JSON.parse(data).myEventName);
}
ref.addEventListener('bridgeresponse', appEventHandler);
ref.executeScript(pollScript);
Not that in both cases the polling script will stop if the page is navigated, if you need this to continue you can re-inject the script. The event handler does not need to be re-registered.
You can use this plugin to show helpful documentation pages within your app. Users can view online help documents and then close them without leaving the app.
Here's a few snippets that show how you do this.
- Give users a way to ask for help.
- Load a help page.
- Let users know that you're getting their page ready.
- Show the help page.
- Handle page errors.
There's lots of ways to do this in your app. A drop down list is a simple way to do that.
<select id="help-select">
<option value="default">Need help?</option>
<option value="article">Show me a helpful article</option>
<option value="video">Show me a helpful video</option>
<option value="search">Search for other topics</option>
</select>
Gather the users choice in the onDeviceReady
function of the page and then send an appropriate URL to a helper function in some shared library file. Our helper function is named showHelp()
and we'll write that function next.
$('#help-select').on('change', function (e) {
var url;
switch (this.value) {
case "article":
url = "https://cordova.apache.org/docs/en/latest/"
+ "reference/cordova-plugin-inappbrowser/index.html";
break;
case "video":
url = "https://youtu.be/F-GlVrTaeH0";
break;
case "search":
url = "https://www.google.com/#q=inAppBrowser+plugin";
break;
}
showHelp(url);
});
We'll use the open
function to load the help page. We're setting the hidden
property to yes
so that we can show the browser only after the page content has loaded. That way, users don't see a blank browser while they wait for content to appear. When the loadstop
event is raised, we'll know when the content has loaded. We'll handle that event shortly.
function showHelp(url) {
var target = "_blank";
var options = "location=yes,hidden=yes";
inAppBrowserRef = cordova.InAppBrowser.open(url, target, options);
inAppBrowserRef.addEventListener('loadstart', loadStartCallBack);
inAppBrowserRef.addEventListener('loadstop', loadStopCallBack);
inAppBrowserRef.addEventListener('loaderror', loadErrorCallBack);
}
Because the browser doesn't immediately appear, we can use the loadstart
event to show a status message, progress bar, or other indicator. This assures users that content is on the way.
function loadStartCallBack() {
$('#status-message').text("loading please wait ...");
}
When the loadstopcallback
event is raised, we know that the content has loaded and we can make the browser visible. This sort of trick can create the impression of better performance. The truth is that whether you show the browser before content loads or not, the load times are exactly the same.
function loadStopCallBack() {
if (inAppBrowserRef != undefined) {
inAppBrowserRef.insertCSS({ code: "body{font-size: 25px;}" });
$('#status-message').text("");
inAppBrowserRef.show();
}
}
You might have noticed the call to the insertCSS
function. This serves no particular purpose in our scenario. But it gives you an idea of why you might use it. In this case, we're just making sure that the font size of your pages have a certain size. You can use this function to insert any CSS style elements. You can even point to a CSS file in your project.
Sometimes a page no longer exists, a script error occurs, or a user lacks permission to view the resource. How or if you handle that situation is completely up to you and your design. You can let the browser show that message or you can present it in another way.
We'll try to show that error in a message box. We can do that by injecting a script that calls the alert
function. That said, this won't work in browsers on Windows devices so we'll have to look at the parameter of the executeScript
callback function to see if our attempt worked. If it didn't work out for us, we'll just show the error message in a <div>
on the page.
function loadErrorCallBack(params) {
$('#status-message').text("");
var scriptErrorMesssage =
"alert('Sorry we cannot open that page. Message from the server is : "
+ params.message + "');"
inAppBrowserRef.executeScript({ code: scriptErrorMesssage }, executeScriptCallBack);
inAppBrowserRef.close();
inAppBrowserRef = undefined;
}
function executeScriptCallBack(params) {
if (params[0] == null) {
$('#status-message').text(
"Sorry we couldn't open that page. Message from the server is : '"
+ params.message + "'");
}
}
Sometimes you may want to respond to an event happening on the page loaded in the browser,
for example a button to open the barcode scanner, or closing the browser when a login flow
was finished. This can done by navigating to a URL with a custom scheme listed in the
AllowedSchemes
preference in config.xml
, triggering a customscheme
event on the
browser. Multiple values are separated by comma's.
In config.xml
, include the following:
<preference name="AllowedSchemes" value="app" />
function onCustomScheme(e) {
if (e.url === 'app://hide') {
inAppBrowserRef.hide();
}
}
inAppBrowserRef = cordova.InAppBrowser.open('https://example.com', '_blank');
inAppBrowserRef.addEventListener('customscheme', onCustomScheme);
When the opened page navigates to the link app://hide
, the browser is hidden.
Please note that this feature is only available on Android and iOS (pull requests for other platforms are welcome).
var iab = cordova.InAppBrowser;
iab.open('local-url.html'); // loads in the Cordova WebView
iab.open('local-url.html', '_self'); // loads in the Cordova WebView
iab.open('local-url.html', '_system'); // Security error: system browser, but url will not load (iOS)
iab.open('local-url.html', '_blank'); // loads in the InAppBrowser
iab.open('local-url.html', 'random_string'); // loads in the InAppBrowser
iab.open('local-url.html', 'random_string', 'location=no'); // loads in the InAppBrowser, no location bar
var iab = cordova.InAppBrowser;
iab.open('http://whitelisted-url.com'); // loads in the Cordova WebView
iab.open('http://whitelisted-url.com', '_self'); // loads in the Cordova WebView
iab.open('http://whitelisted-url.com', '_system'); // loads in the system browser
iab.open('http://whitelisted-url.com', '_blank'); // loads in the InAppBrowser
iab.open('http://whitelisted-url.com', 'random_string'); // loads in the InAppBrowser
iab.open('http://whitelisted-url.com', 'random_string', 'location=no'); // loads in the InAppBrowser, no location bar
var iab = cordova.InAppBrowser;
iab.open('http://url-that-fails-whitelist.com'); // loads in the InAppBrowser
iab.open('http://url-that-fails-whitelist.com', '_self'); // loads in the InAppBrowser
iab.open('http://url-that-fails-whitelist.com', '_system'); // loads in the system browser
iab.open('http://url-that-fails-whitelist.com', '_blank'); // loads in the InAppBrowser
iab.open('http://url-that-fails-whitelist.com', 'random_string'); // loads in the InAppBrowser
iab.open('http://url-that-fails-whitelist.com', 'random_string', 'location=no'); // loads in the InAppBrowser, no location bar