The CursorAdapter is much more complex to set up than the ArrayAdapter. For one thing, we offer more options with the CursorAdapter than we did with the ArrayAdapter. Our CursorAdapter can be made to display either one or two line list items, based on whether there are one or two columns specified. While the ArrayAdapter includes some default filtering logic, we need to provide a little more support for the CursorAdapter.
To start with, we allow for two different column naming conventions to be used, along with some defaults. Declare a utility method to find the expected column names from the
Intent:private String getColumnName( final Intent intent, String primary, String secondary, String def) {First, try and use the
primaryattribute name to get a column name:String col = intent.getStringExtra(primary);
If the column name is
null, try thesecondaryattribute name:if(col == null) { col = intent.getStringExtra...