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POHow to tell if loadUrl() was called DIRECTLY or as a result of touching a link?
 

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  1. POHow to tell if loadUrl() was called DIRECTLY or as a result of touching a link?
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    <p>In a WebView-derived class I override loadUrl():</p> <pre><code> @Override public void loadUrl(String url) { super.loadUrl(url); } </code></pre> <p>Inside this overriden loadUrl(), I want to know whether it was called as a result of the user touching a link (inside the same WebView), or was actually called directly somewhere in my program (either directly by me, or indirectly as a result of some Javascript processing etc.).</p> <p>I was initially thinking of distinguishing between the two by setting a flag in an <code>OnTouchListener()</code>:</p> <pre><code>public boolean onTouch(View v, MotionEvent event) { if (event.getAction() == MotionEvent.ACTION_UP) { // set flag !!! } return false; } </code></pre> <p>and resetting it in loadUrl(), <em>after</em> checking its value.</p> <p>The problem with this "solution" is that in the aforementioned onTouch() implementation, <em>any</em> touch sets the flag, so a false scenario like this is possible:</p> <ol> <li>The user touches the screen (but not a link!)</li> <li>onTouch sets the flag.</li> <li>My program calls loadUrl() directly.</li> <li>loadUrl() checks the flag and thinks that it was called as result of a touch.</li> </ol> <p>So obviously the above onTouch() handling is too simplistic and doesn't work.</p> <p>Any idea how to implement code that actually knows how to tell between a touch-triggered loadUrl() and a <strong>non</strong>-touch-triggered loadUrl()?</p> <p><strong>Update:</strong> I checked the stack trace suggestion below, and this is the stack trace at loadUrl() when it is invoked via touch:</p> <pre><code>com.utubefan.MyWebView.loadUrl(MyWebView.java:365) com.utubefan.MyWebViewClient.shouldOverrideUrlLoading(MyWebViewClient.java:123) android.webkit.CallbackProxy.uiOverrideUrlLoading(CallbackProxy.java:216) android.webkit.CallbackProxy.handleMessage(CallbackProxy.java:323) android.os.Handler.dispatchMessage(Handler.java:99) android.os.Looper.loop(Looper.java:123) android.app.ActivityThread.main(ActivityThread.java:4627) java.lang.reflect.Method.invokeNative(Native Method) java.lang.reflect.Method.invoke(Method.java:521) com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) dalvik.system.NativeStart.main(Native Method) </code></pre> <p>I am not sure that I can identify an explicit touch event there, but the following looks promising (they don't appear on a non-touch loadUrl):</p> <pre><code>android.webkit.CallbackProxy.uiOverrideUrlLoading(CallbackProxy.java:216) android.webkit.CallbackProxy.handleMessage(CallbackProxy.java:323) </code></pre>
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