In our second article in this series: Offline Mobile Map Basics: Offline Base-Maps and Layers, we discussed how to take base-maps and layers offline. From Esri-land Tile Packages (TPK) and Feature Layers were key discussion areas. In this third post in the series we will dig a little deeper and focus on offline mobile map editing.
Editing Map Layers Offline
As we have discussed in the previous two posts, base-maps are static. That means they are simply images or tiles stitched together to provide context. Layers are what sit on-top of base-maps and if the are Feature Layers they can be edited. What do we mean by edited? There are three types of editing:
1. Add – Imagine you are working in the pipeline industry, and are viewing on your iPad the current pipe network in an ArcGIS map app. You are currently extending the pipeline; adding an additional line. You will need to update the pipeline layer to include this new section of pipe. That means adding a new line feature.
2. Edit – You are out inspecting a power pole. When you tap the point feature which represents the pole in you mobile map app a list of attributes appears, these describe the pole; type, last inspection date etc. You notice the pole is listed as metal when you can see it is actually wood. You need to edit this features ‘material type’ attribute so it is accurate. (more…)
We’ve been building mobile ArcGIS Online apps for both online and offline editing. One important requirement has been image attachments. But one area we see as being equally as important are audio and video files. So providing richer data and attaching that in ArcGIS Online to a feature. The video below shows attaching in offline mode an mp3 audio and wmv video file to a feature and uploading the data to a hosted feature service in ArcGIS Online.
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Our work with mobile ArcGIS Online and disconnected or offline mode continues. The most recent addition we made to the mobile app was attachments. Those clever people at Esri have integrated attachments – images, video, audio – into feature layers/services. A very nice integration given mobile devices ability to capture photos, videos and audio. So we can use the camera on the mobile device for example, to take a picture of feature and attach that to what is stored in the ArcGIS service for that feature. Adding this functionality while in online mode we discussed in our last post. Doing the same while offline was a little more tricky. But after some late nights we managed to add offline attachments to the app. The demo below shows this in action:
Mobile ArcGIS – Demo of Adding Attachments when Offline
We’ve just made some updates to our online/offline mobile editing app. As mentioned in a previous blog post, the ability to attach photos, audio files and video to a feature are all now possible in ArcGIS Online. After setting up the hosted Feature Service in ArcGIS Online and enabling attachments, we extended our mobile editing app to include that functionality. See the demo below:
Attaching Images to ArcGIS Online Features on an Android Tablet
We were impressed by the work UDOT are doing with ArcGIS Online. It was great to see them presenting at the Esri User Conference in 2012. Their effort forms a part of the AASHTO initiative.
We’ve been working closely with Region 6 of the Idaho Transportation Dept, developing a mobile application which will form part of their IPLAN project. So transportation is an important part of our own work with mobile and ArcGIS Online. One of our key areas of focus has been to build mobile apps which provide the ability to visualize ArcGIS Online web maps and edit layers in both online and offline modes. We thought it might be interesting to test data from UDOT in a mobile editing application. In this example we focused on milepost data.
Below we walk through the simple steps to use this data. We include first a video of the running application:
