I was trying to work out with multiple layout using some online tutorials. The thing is my program was building and compiling correctly as long as there was only one XML file. When I added multiple XML files, I am getting errors saying ‘activity_main cannot be resolved or is not a field’ for the line setContentView ( R.layout.activity _main);, 11/17/2013 · setContentView ( R.layout.activity _main); And then clean your project with Project > Clean (from the Eclipse menu bar at the top). It sounds like there is an issue with your R.java file, which is generated when you build the project. It can happen pretty easily. If the clean doesn’t fix it then we’ll have to look at the files in your res directory.
I’m following the Deitel Android, How to program-book, and when I tried building my first own application I experienced similar problems. What I did:, setContentView (R.layout.main) R means Resource . layout means design . main is the xml you have created under res->layout->main.xml. Whenever you want to change the current look of an Activity or when you move from one Activity to another, the new Activity must have a design to show. We call setContentView in onCreate with the desired design as …
4/25/2018 · Case 2 : In your PreferenceActivity, you replace android.R.id.content with your own custom layout and a Fragment is being attached to this Activity later. Instead of using setContentView to set …
5/18/2018 · Nested Layout class contains layout resource constants to ease the availability of actual files in the resource directory. At runtime, the System will select the appropriate layout based on orientation and other factors like language and region. By default, it selects the layout in the res/layout directory. Eg: setContentView (R.layout.activity …
In Xamarin.Android I can write:. SetContentView ( Resource .Layout.Main); for set the activity content from Main.axml. How I can do the same for Xamarin.Forms?How I.
I’ve just done a fresh re-install/extract of Eclipse off Android’s website, hardly added much code or XML to my project, yet nothing’s being recognized outside of my MainActivity.java. Here’s the other files in case you want to see them:.
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1/26/2015 · ???? setContentView ( R.layout.activity_main )??Source not found ????????? 2015-01-24 22:35:18 ?? ???? ?? ?? ?? ??
