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Android Spinner : Avoid onItemSelected calls during initialization
... Will call onItemSelected() Listener.
So first time handle this with any Integer value
Example:
Initially Take int check = 0;
public void onItemSelected(AdapterView<?> parent, View arg1, int pos,long id) {
if(++check > 1) {
TextView textView = (TextView) findViewById(R.id.text...
How can I read input from the console using the Scanner class in Java?
...xample to illustrate how java.util.Scanner works would be reading a single integer from System.in. It's really quite simple.
Scanner sc = new Scanner(System.in);
int i = sc.nextInt();
To retrieve a username I would probably use sc.nextLine().
System.out.println("Enter your username: ");
Scanner ...
Set Locale programmatically
... displayMetrics = resources.getDisplayMetrics();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1){
configuration.setLocale(locale);
} else{
configuration.locale=locale;
}
if (Build.VERSION.SDK_INT > Build.VERSION_CODES.N){
getApplicationC...
Command to get time in milliseconds
... output is:
3010
This is a very cheap operation, which works with shell internals and procfs.
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How to scale threads according to CPU cores?
...al problem with multiple threads in Java. my math problem can be separated into work units, that I want to have solved in several threads.
...
Make header and footer files to be included in multiple html pages
...d using PHP instead so that you can use simple PHP include object?
If you convert the file names of your .html pages to .php - then at the top of each of your .php pages you can use one line of code to include the content from your header.php
<?php include('header.php'); ?>
Do the same in...
Objective-C class -> string like: [NSArray className] -> @“NSArray”
...c. NSStringFromClass just pulls the name of the class from this struct and converts it to an NSString. Don't store the class name in a static NSString, it won't offer any performance advantage.
– dreamlax
Apr 10 '11 at 23:43
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Android: how to make an activity return results to the activity which calls it?
... got the result from the activity you started.
startActivityForResult(new Intent(“YourFullyQualifiedClassName”),requestCode);
In the activity you can make use of setData() to return result.
Intent data = new Intent();
String text = "Result to be returned...."
//---set the data to pass back--...
Throw keyword in function's signature
...ly considered a bad idea.
http://www.gotw.ca/publications/mill22.htm goes into a lot more detail about why, but the problem is partly that the compiler is unable to enforce this, so it has to be checked at runtime, which is usually undesirable. And it is not well supported in any case. (MSVC ignore...
How to show math equations in general github's markdown(not github's blog)
...
this worked great. I had to convert a jupyter notebook (.ipynb) to .md and the equations were essentially multiline latex code.
– Marc Maxmeister
Jun 17 '19 at 18:21
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