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Android numeric input

Christian — Sat, 10 Jul 2010 15:13:20 +0000

To restrict the input for an EditText to a numeric value, you can add the following to the layout file:

... android:singleLine="true" android:inputType="numberDecimal" ... >


Then use, for example, Double.parseDouble(…) to retrieve the value in code.
Incidentally, the documentation recommends avoiding floats and using double instead.



main.out.xml: Error parsing XML: no element found
Christian — Sun, 11 Apr 2010 07:50:10 +0000
When you build and run your Android application in Eclipse you can get the following error message:
...res\layout\main.out.xml:1: error: Error parsing XML: no element found
This occurs when you try and run the application from the main.xml layout file. The application cannot run from here and needs to be run from the java file.
The answer is to ensure that a java file is selected when you hit run, as you should run the java not the xml file.  The easiest way to ensure you don’t do this is to use the Run History options in Eclipse.