1
我在我的iOS增强现实iOS项目中从Metaio第三方sdk获得了Logic.js文件。这个.JS文件是由Metaio创建者创建的。从Javascript调用iOS到iOS Webview委托不是触发
我正在修改这个文件来调用我的iOS原生web视图。基本上，我想从这个.JS文件调用iOS本机视图。
下面是iOS项目中使用的Logic.js文件。使用window.location我试图从这个.JS文件调用UIWebview委托。
var methodExists = function (object, method) {
return typeof object !== 'undefined' && typeof method === 'function';
};
arel.sceneReady(function() {
var scenario = {};
scenario.objectName = "scenario";
scenario.contents = []; // Array of all contents in this AR scenario
scenario.trackables = []; // Array of all trackables in this AR scenario
scenario.scenes = []; // Array of all scenes in this AR scenario
scenario.googleAnalytics = null;
scenario.currentScene = null;
scenario.currentExperience360 = null;
scenario.instantTrackingMode = false; // True if instant tracking is currently running
scenario.currentTrackingConfigPathOrIdentifier = "html/resources/TrackingData.zip";
scenario.addObject = function (object) {
arel.Debug.log("scenario.addObject(" + object.objectName + ")");
this.registerObject(object);
arel.Scene.addObject(object);
};
scenario.registerObject = function (object) {
arel.Debug.log("scenario.registerObject(" + object.objectName + ")");
arel.Events.setListener(object, this.objectEventsCallback, scenario);
};
scenario.groupID = 0;
scenario.getNewGroupID = function() {
this.groupID++;
return this.groupID;
};
scenario.getTrackable = function (identifier) {
arel.Debug.log("scenario.getTrackable(" + identifier + ")");
var i;
var trackable = null;
if (!identifier || identifier === "") {
arel.Debug.log("scenario.getTrackable(): Warning - identifier is empty, returning null");
return trackable;
}
var allTrackables = this.trackables;
for (i = 0; i < allTrackables.length; ++i) {
trackable = allTrackables[i];
if (trackable.objectName == identifier) {
return trackable;
}
if (trackable.cosName == identifier) {
return trackable;
}
if (trackable.cosID == identifier) {
return trackable;
}
}
arel.Debug.log("scenario.getTrackable(" + identifier + "): Error - could not correlate the given identifier to any known trackable.");
return null;
};
scenario.sceneCallback = function (type, result) {
if (!type) {
return;
}
switch (type) {
case arel.Events.Scene.ONTRACKING:
this.onTrackingChanged(result);
break;
case arel.Events.Scene.ONVISUALSEARCHRESULT:
break;
case arel.Events.Scene.ONREADY:
break;
case arel.Events.Scene.ONLOAD:
case arel.Events.Scene.ONLOCATIONUPDATE:
default:
break;
}
};
scenario.objectEventsCallback = function (object, type, params) {
switch (type) {
case arel.Events.Object.ONREADY:
if (methodExists(object, object.onLoaded)) {
object.onLoaded();
}
break;
case arel.Events.Object.ONTOUCHSTARTED:
if (this.googleAnalytics) {
this.googleAnalytics.logUIInteraction(arel.Plugin.Analytics.Action.TOUCHSTARTED, object.getID());
}
break;
case arel.Events.Object.ONTOUCHENDED:
if (this.googleAnalytics) {
this.googleAnalytics.logUIInteraction(arel.Plugin.Analytics.Action.TOUCHENDED, object.getID());
}
break;
case arel.Events.Object.ONINVISIBLE:
case arel.Events.Object.ONVISIBLE:
case arel.Events.Object.ONANIMATIONENDED:
case arel.Events.Object.ONMOVIEENDED:
case arel.Events.Object.ONLOAD:
case arel.Events.Object.ONROTATED:
case arel.Events.Object.ONSCALED:
case arel.Events.Object.ONTRANSLATED:
default:
break;
}
};
scenario.onTrackingChanged = function (trackingValuesList) {
if (trackingValuesList.length === 0) {
arel.Debug.log("scenario.onTrackingChanged: Error - list of tracking values is empty, this should be impossible.");
return;
}
var i, trackingValues, cosName, cosID, trackable, trackingMethod, gaTrackingMethod;
for (i = 0; i < trackingValuesList.length; i++) {
trackingValues = trackingValuesList[i];
trackable = null;
cosName = trackingValues.getCoordinateSystemName();
cosID = trackingValues.getCoordinateSystemID();
// Try to find the trackable by its COS name first. If that fails, try the COS ID.
if (cosName && cosName !== "") {
trackable = this.getTrackable(cosName);
}
if (trackable === null && cosID) {
trackable = this.getTrackable(cosID);
}
if (trackable === null) {
arel.Debug.log("onTrackingChanged: Error - Can't find a trackable matching COS name '" + cosName + "' or COS ID '" + cosID + "'");
return;
}
else {
// The cosID 1 is strictly reserved for the 360 experience if it is running.
if (scenario.currentExperience360 && cosID === 1) {
return;
}
}
switch (trackingValues.getState()) {
case arel.Tracking.STATE_NOTTRACKING:
arel.Debug.log("onTrackingChanged: " + trackable.objectName + " is not tracking");
if (methodExists(trackable, trackable.onTrackingLost)) {
trackable.onTrackingLost(trackingValues);
}
break;
case arel.Tracking.STATE_TRACKING:
arel.Debug.log("onTrackingChanged: " + trackable.objectName + " is tracking");
if (methodExists(trackable, trackable.onDetected)) {
trackable.onDetected();
}
if (methodExists(trackable, trackable.onTracked)) {
trackable.onTracked(trackingValues);
}
if (this.googleAnalytics) {
trackingMethod = trackingValues.getType();
gaTrackingMethod = this.googleAnalytics.trackingTypeToAnalyticsType(trackingMethod);
this.googleAnalytics.logTrackingEvent(gaTrackingMethod, arel.Plugin.Analytics.Action.STATE_TRACKING, cosID, cosName);
}
break;
case arel.Tracking.STATE_EXTRAPOLATED:
case arel.Tracking.STATE_INITIALIZED:
case arel.Tracking.STATE_REGISTERED:
default:
break;
}
}
};
scenario.startInstantTracking = function() {
arel.Debug.log("scenario.startInstantTracking()");
if (this.instantTrackingMode) {
return;
}
this.instantTrackingMode = true;
if (scenario.currentExperience360) {
scenario.currentExperience360.hide();
}
// Iterate over all trackables, simulate an onTrackingLost() for all those which are currently tracking.
var i, trackable;
for (i = 0; i < this.trackables.length; ++i) {
trackable = this.trackables[i];
if (trackable.isCurrentlyTracking && trackable != userDevice) {
if (methodExists(trackable, trackable.onTrackingLost)) {
trackable.onTrackingLost();
}
}
}
arel.Scene.startInstantTracking(arel.Tracking.INSTANT2D);
if (methodExists(this, this.onStartInstantTracking)) {
this.onStartInstantTracking();
}
};
scenario.stopInstantTracking = function() {
arel.Debug.log("scenario.stopInstantTracking()");
if (!this.instantTrackingMode) {
return;
}
this.instantTrackingMode = false;
if (methodExists(instantTracker, instantTracker.onTrackingLost)) {
instantTracker.onTrackingLost();
}
this.setTrackingConfiguration(this.currentTrackingConfigPathOrIdentifier);
if (methodExists(this, this.onStopInstantTracking)) {
this.onStopInstantTracking();
}
};
scenario.skipTrackingInitialization = function() {
arel.Debug.log("scenario.skipTrackingInitialization()");
arel.Scene.sensorCommand("initialize", "", function(a) {});
if (methodExists(this, this.onSkipTrackingInitialization)) {
this.onSkipTrackingInitialization();
}
};
scenario.reloadTrackingConfiguration = function() {
arel.Debug.log("scenario.reloadTrackingConfiguration()");
this.setTrackingConfiguration(this.currentTrackingConfigPathOrIdentifier);
if (methodExists(this, this.onReloadTrackingConfiguration)) {
this.onReloadTrackingConfiguration();
}
};
scenario.setTrackingConfiguration = function (trackingConfigPathOrIdentifier) {
// Iterate over all trackables, simulate an onTrackingLost() for all those which are currently tracking.
var i, trackable;
for (i = 0; i < this.trackables.length; ++i) {
trackable = this.trackables[i];
if (trackable.isCurrentlyTracking && trackable != userDevice) {
if (methodExists(trackable, trackable.onTrackingLost)) {
trackable.onTrackingLost();
}
}
}
// Set the new tracking configuration.
arel.Scene.setTrackingConfiguration(trackingConfigPathOrIdentifier);
};
scenario.onStartup = function() {
arel.Debug.log("Welcome to the 'HouseProject' Augmented Reality experience.");
arel.Events.setListener(arel.Scene, scenario.sceneCallback, scenario);
if (google_analytics_id) {
arel.Debug.log("Google Analytics is enabled. Your account ID is: " + google_analytics_id);
arel.Debug.log("The event sampling rate is: arel.Plugin.Analytics.EventSampling.ONCE");
scenario.googleAnalytics = new arel.Plugin.Analytics(google_analytics_id, arel.Plugin.Analytics.EventSampling.ONCE, "");
} else {
arel.Debug.log("Note: No Google Analytics ID is set - Google Analytics will be disabled.");
}
if (methodExists(scenario, scenario.onLoaded)) {
scenario.onLoaded();
}
// The following contents have been defined in the index.xml file, therefore we need to register them
// and call their onLoaded() event manually.
scenario.registerObject(model6);
if (methodExists(model6, model6.onLoaded)) {
model6.onLoaded();
}
scenario.registerObject(model7);
if (methodExists(model7, model7.onLoaded)) {
model7.onLoaded();
}
if (methodExists(userDevice, userDevice.onLoaded)) {
userDevice.onLoaded();
}
// All objects have been defined, so start the AR experience by calling each trackable's .onLoaded() method.
var i, trackable;
for (i = 0; i < scenario.trackables.length; ++i) {
trackable = scenario.trackables[i];
if (methodExists(trackable, trackable.onLoaded)) {
trackable.onLoaded();
}
}
// Call the first scene's display() once to make sure that the content of that scene is initially visible.
scene1.display();
};
var scene1 = {};
scenario.scenes.push(scene1);
scene1.objectName = "scene1";
scene1.display = function() {
arel.Debug.log(this.objectName + ".display()");
if (scenario.currentScene == this) {
return;
}
// Iterate over all trackables, simulate an onTrackingLost() for all those which are currently tracking.
var trackingTrackables = [];
var i, trackable;
for (i = 0; i < scenario.trackables.length; ++i) {
trackable = scenario.trackables[i];
if (trackable.isCurrentlyTracking) {
// The instant tracker should be excluded from the tracking ones because it will be stopped later on.
if (trackable !== instantTracker) {
trackingTrackables.push(trackable);
}
if (methodExists(trackable, trackable.onTrackingLost)) {
trackable.onTrackingLost();
}
}
}
// In case any instant tracking is currently running, stop it before switching to the other scene.
scenario.stopInstantTracking();
var previousExperience360 = null;
if (scenario.currentExperience360) {
previousExperience360 = scenario.currentExperience360;
scenario.currentExperience360.hide();
}
scenario.currentScene = this;
// Iterate over all tracking trackables again, this time simulating an onDetected() and onTracked() event
// for all those which are currently tracking.
for (i = 0; i < trackingTrackables.length; ++i) {
trackable = trackingTrackables[i];
if (methodExists(trackable, trackable.onDetected)) {
trackable.onDetected();
}
if (methodExists(trackable, trackable.onTracked)) {
trackable.onTracked(trackable.currentTrackingValues);
}
}
if (previousExperience360) {
// A 360 was displayed in the previous scene, we now need to check whether any 360 in the new scene
// is triggered by the same trackable. If so, that 360 should be displayed.
var i, content;
for (i = 0; i < scenario.contents.length; ++i) {
content = scenario.contents[i];
if (content.type == "Experience360" && content.scene == this &&
content.associatedTrackable == previousExperience360.associatedTrackable) {
content.display();
break;
}
}
}
if (methodExists(this, this.onDisplayed)) {
this.onDisplayed();
}
};
var instantTracker = {};
scenario.trackables.push(instantTracker);
instantTracker.objectName = "instantTracker";
instantTracker.cosName = "InstantTracker";
instantTracker.cosID = "1";
instantTracker.isCurrentlyTracking = false;
instantTracker.currentTrackingValues = null;
instantTracker.onTracked = function (trackingValues) {
arel.Debug.log(this.objectName + ".onTracked()");
this.isCurrentlyTracking = true;
this.currentTrackingValues = trackingValues;
};
instantTracker.onTrackingLost = function (trackingValues) {
arel.Debug.log(this.objectName + ".onTrackingLost()");
this.isCurrentlyTracking = false;
this.currentTrackingValues = null;
};
var pattern2 = {};
scenario.trackables.push(pattern2);
pattern2.objectName = "pattern2";
pattern2.cosName = "Home1_1";
pattern2.cosID = "1";
pattern2.isCurrentlyTracking = false;
pattern2.currentTrackingValues = null;
pattern2.onTracked = function (trackingValues) {
arel.Debug.log(this.objectName + ".onTracked()");
this.isCurrentlyTracking = true;
this.currentTrackingValues = trackingValues;
// Try to call native from here
window.location = "js-call:" + "myObjectiveCFunction";
model6.display();
model6.play("Default Take", false);
};
pattern2.onTrackingLost = function (trackingValues) {
arel.Debug.log(this.objectName + ".onTrackingLost()");
this.isCurrentlyTracking = false;
this.currentTrackingValues = null;
model6.hide();
};
var pattern3 = {};
scenario.trackables.push(pattern3);
pattern3.objectName = "pattern3";
pattern3.cosName = "Home2_2";
pattern3.cosID = "2";
pattern3.isCurrentlyTracking = false;
pattern3.currentTrackingValues = null;
pattern3.onTracked = function (trackingValues) {
arel.Debug.log(this.objectName + ".onTracked()");
this.isCurrentlyTracking = true;
this.currentTrackingValues = trackingValues;
model7.display();
model7.play("Default Take", false);
};
pattern3.onTrackingLost = function (trackingValues) {
arel.Debug.log(this.objectName + ".onTrackingLost()");
this.isCurrentlyTracking = false;
this.currentTrackingValues = null;
model7.hide();
};
var userDevice = {};
userDevice.isCurrentlyTracking = true; // The pose of the user's device is always tracked...
scenario.trackables.push(userDevice);
userDevice.objectName = "userDevice";
userDevice.cosName = "Device";
userDevice.cosID = "-1";
userDevice.onTracked = function (trackingValues) {
arel.Debug.log(this.objectName + ".onTracked()");
this.isCurrentlyTracking = true;
this.currentTrackingValues = trackingValues;
};
userDevice.onTrackingLost = function (trackingValues) {
arel.Debug.log(this.objectName + ".onTrackingLost()");
this.isCurrentlyTracking = false;
this.currentTrackingValues = null;
};
// Kick-off the AR experience by calling the scenario's onStartup() method as soon as AREL is ready
scenario.onStartup();
});
在iOS端：UIWebview放置在视图控制器及其委托方法中以获得Javascript调用。
- (BOOL)webView:(UIWebView *)webView2
shouldStartLoadWithRequest:(NSURLRequest *)request
navigationType:(UIWebViewNavigationType)navigationType {
NSLog(@"Inside WebView");
NSString *requestString = [[request URL] absoluteString];
if ([[[request URL] absoluteString] hasPrefix:@"js-call:"]) {
NSLog(@"Call from Javascript");
return NO;
}
// Accept this location change
return YES;
}
这里是头文件中创建的网页视图对象：
#import "MetaioSDKViewController.h"
#import <metaioSDK/GestureHandlerIOS.h>
#import <metaioSDK/IARELInterpreterIOS.h>
// forward declarations
@class EAGLView;
@interface ARELViewController : MetaioSDKViewController<UIGestureRecognizerDelegate, IARELInterpreterIOSDelegate, UIWebViewDelegate>
{
metaio::IARELInterpreterIOS* m_ArelInterpreter;
GestureHandlerIOS* m_pGestureHandlerIOS;
NSString* m_arelFile;
}
@property (nonatomic, retain) IBOutlet UIWebView* m_arelWebView;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil instructions:(NSString *)arelTutorialConfig;
- (void) onSDKReady;
@end
而且在.mm其设置：（注意：Interface Builder的代表也已设置）
- (void)viewDidLoad {
[super viewDidLoad];
m_arelWebView.delegate = self;
}
这当这个功能正在执行的时候，根本不会从Javascript中调用。
有人能告诉我可能是什么原因？为什么Javascript调用不会触发这个原生的webview委托。
谢谢！
[Rü确保了window.location =“js-调用：“+”myObjectiveCFunction“;是真的调用？你可以在搬迁之前弹出警报吗？ – gran33
你确定你的UIWebView的委托是正确的对象吗？ – gran33
你能分享一下你创建UIWebView对象的代码吗？ – Brams