For classic UI, check this out for complete details. How to set default value for tag picker But are you specifically looking for a solution in Touch UI?

please check this out Query for fetching assets with the same ordering as used in DAM If you want to maintain the order, the suggested practice is to use JCR API as opposed to query. It also betters the performance.

I am sure this is what you are looking it? Please refer to this beautiful article which talks about the same.http://www.aemcq5tutorials.com/tutorials/custom-osgi-configuration-aem/

Denny,I found something and I validated on my local instance(AEM 6.2). Basically, when we enable a renderer for GET servlet, we see this behavior. Surprisingly,  I see a whole lot of live sites having this issue and worst thing is these pages are getting indexed by google and showing up in search re...

Can you please confirm where the authoring of your component(footer links) is happening?. The the component(with design_dialog) to show up in all pages of a given template, the authoring should happen in Design mode(not in page level).  So, in your case, I hope you have accessed the page 1, switched...

I guess it is the default behavior of sling. Meaning, when we do not have a script or sling:resourceTtype associated with a node, this page is displayed also this happens when we have an invalid sling:resourceType. They are like the bad nodes or pages which can be cleaned up. But in this case you ar...

I would advice not to debug issues of this nature in PROD environment as it may pose severe performance issues or may be an outage. So, please validate if you could reproduce the issue on a lower environment (QA, Dev servers) before you try in PROD.Regarding the solution for the issues you have aske...

Are you seeing this behavior when you are injecting the request object? was it all working otherwise?  one of the prerequisites is to make these changes(add dependencies) to your pom.xml and also add the plugin element.org.apache.felix.scrorg.apache.felix.scr.annotationsorg.apache.sling.models.apipl...

Caused by: java.lang.NullPointerException: nullat org.apache.jsp.apps.amica.components.content.left_002dnav.left_002dnav_jsp._jspService(le ft_002dnav_jsp.java:191)Snippet of the stack trace clearly indicates that it is a null pointer that is originating from the component script because of which yo...

You will always be able to get the handle of SlingHttpServletRequest object in your model(sling models) by injecting it. Here is the code below.@InjectSlingHttpServletRequest request;And once you have the request object, it should be straight forward to get the WCMMode. WCMMode mode = WCMMode.fromRe...