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How to start new activity on button click
In an Android application, how do you start a new activity (GUI) when a button in another activity is clicked, and how do you pass data between these two activities?
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Check if object exists in JavaScript
...his is a core Javascript feature, it is a shame that there is not a better and less error-prone built-in. The string comparison prevents the compiler from 100% reliably tell us when we made a small mistake (like a typo) in these kinds of checks.
– Domi
Nov 24 '...
Resetting a setTimeout
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You can store a reference to that timeout, and then call clearTimeout on that reference.
// in the example above, assign the result
var timeoutHandle = window.setTimeout(...);
// in your click function, call clearTimeout
window.clearTimeout(timeoutHandle);
// then ...
Can we have multiple “WITH AS” in single sql - Oracle SQL
...alias from the first subquery to the second subquery? In this case the abc and xyz subqueries? I need to get the result of the first subquery and use it on the second subquery.
– Wax
Feb 21 '17 at 5:55
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Iterate through object properties
...roperty simply checks to see if this is a property specific to this class, and not one inherited from the base class.
It's also possible to call hasOwnProperty through the object itself:
if (obj.hasOwnProperty(prop)) {
// do stuff
}
But this will fail if the object has an unrelated field w...
How to determine the current shell I'm working on
...t to actual shell name in csh or tcsh
$ZSH_NAME is set on zsh
ksh has $PS3 and $PS4 set, whereas the normal Bourne shell (sh) only has $PS1 and $PS2 set. This generally seems like the hardest to distinguish - the only difference in the entire set of environment variables between sh and ksh we have i...
Fastest method to replace all instances of a character in a string [duplicate]
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I did user.email.replace(/./g,','), and the whole email got replaced with comas in the same number as characters in the email. Puzzled...
– Jared Tomaszewski
Sep 30 '13 at 20:13
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How to set breakpoints on future shared libraries with a command flag
I'm trying to automate a gdb session using the --command flag. I'm trying to set a breakpoint on a function in a shared library (the Unix equivalent of a DLL) . My cmds.gdb looks like this:
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Convert Unix timestamp to a date string
...ick, one-liner way to convert a Unix timestamp to a date from the Unix command line?
11 Answers
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How to programmatically take a screenshot on Android?
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Here is the code that allowed my screenshot to be stored on an SD card and used later for whatever your needs are:
First, you need to add a proper permission to save the file:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
And this is the code (running in a...