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Unable to modify ArrayAdapter in ListView: UnsupportedOperationException
...found out the problem. The ArrayAdapter, on being initialized by an array, converts the array into a AbstractList (List) which cannot be modified.
Solution
Use an ArrayList<String> instead using an array while initializing the ArrayAdapter.
String[] array = {"a","b","c","d","e","f","g"};
Ar...
Setting HTTP headers
...ight request receives a 200 OK after which the the OPTIONS method will get converted to GET,POST,PUT or what ever is your request type.
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Android: How to enable/disable option menu item on button click?
...enu() method is called
only once, as described above. The
system keeps and re-uses the Menu you
define in this method until your
activity is destroyed. If you want to
change the Options Menu any time after
it's first created, you must override
the onPrepareOptionsMenu() method.
This ...
What is the difference between varchar and varchar2 in Oracle?
... between an OCI client application and a database table, the OCI libraries convert the data between internal data types and external data types.
External types provide a convenience for the programmer by making it possible to work with host language types instead of proprietary data formats. OCI c...
mysql command for showing current configuration variables
...do more with the results, as it is a plain old query.
For example you can convert units to become more readable. The following query provides the current global setting for the innodb_log_buffer_size in bytes and megabytes:
SELECT
variable_name,
variable_value AS innodb_log_buffer_size_bytes,
...
IE9 border-radius and background gradient bleeding
...nal elements.
I grabbed a random 20x20 gradient PNG via a web search, and converted it into a data URI using an online tool. The resulting data URI is smaller than the CSS code for all that SVG mess, much less the SVG itself! (You could apply this conditionally to IE9 only using conditional style...
Is there an auto increment in sqlite?
... you should try to avoid:
INSERT INTO people VALUES ("John", "Smith");
and use
INSERT INTO people (first_name, last_name) VALUES ("John", "Smith");
instead. The first version is very fragile — if you ever add, move, or delete columns in your table definition the INSERT will either fail o...
How do I concatenate const/literal strings in C?
I'm working in C, and I have to concatenate a few things.
17 Answers
17
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Is there a list of Pytz Timezones?
...This timestamp is in UTC
my_ct = datetime.datetime.now(tz=pytz.UTC)
# Now convert it to another timezone
new_ct = my_ct.astimezone(tz)
>>> new_ct.isoformat()
2017-01-13T11:29:22.601991-05:00
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How do you create a transparent demo screen for an Android app?
...
Put your demo info in a different activity and give it the following theme.
<style name="Transparent" parent="@android:style/Theme.NoTitleBar">
<item name="android:windowContentOverlay">@null</item>
<item name="android:windowIsTranslucent...