Cannot resolve symbol ‘button’ -Android Studio

Here are some things you might have forgotten to do: Name your button (give it an id), I think they’re named button1, button2, … by default Use a capital B when declaring the button object: Button myButton = new Button(“play music”); You should make sure you have Button imported in the activity where you want … Read more

XmlSerializer – There was an error reflecting type

Look at the inner exception that you are getting. It will tell you which field/property it is having trouble serializing. You can exclude fields/properties from xml serialization by decorating them with the [XmlIgnore] attribute. XmlSerializer does not use the [Serializable] attribute, so I doubt that is the problem.

How to fix error: The markup in the document following the root element must be well-formed

General case The markup in the document following the root element must be well-formed. This error indicates that your XML has markup following the root element. In order to be well-formed, XML must have exactly one root element, and there can be no further markup following the single root element. One root element example (GOOD) The most common sources … Read more

How to read and write XML files?

Here is a quick DOM example that shows how to read and write a simple xml file with its dtd: and the dtd: First import these: Here are a few variables you will need: Here is a reader (String xml is the name of your xml file): And here a writer: getTextValue is here: Add … Read more

“ArrayAdapter requires the resource ID to be a TextView” XML problems

The ArrayAdapter requires the resource ID to be a TextView XML exception means you don’t supply what the ArrayAdapter expects. When you use this constructor: R.Layout.a_layout_file must be the id of a xml layout file containing only a TextView(the TextView can’t be wrapped by another layout, like a LinearLayout, RelativeLayout etc!), something like this: If you want your list row layout to be something a little different … Read more

Display XML content in HTML page

Simple solution is to embed inside of a <textarea> element, which will preserve both the formatting and the angle brackets. I have also removed the border with style=”border:none;” which makes the textarea invisible. Here is a sample: http://jsfiddle.net/y9fqf/1/