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//Retrieve the values
Set<String> set = myScores.getStringSet("key", null);
//Set the values
Set<String> set = new HashSet<String>();
set.addAll(listOfExistingScores);
scoreEditor.putStringSet("key", set);
scoreEditor.commit();
is myScores refers to sharedpreference?
what is listOfExistingScores refers to? is it ArrayList?
is scoreEditor refers to ArrayList? or ListView? or custom ListView?
According to that answser you can say that those three variable defines following things :
myScores :
As you said in op, it's shared preference variable. It holdes sharedpreference.
listOfExistingScores :
It refers to the array declared by user. It is stored in hashset.
scoreEditor :
Score editor is sharedpreferences editor. You can read more details about it by given link.
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I need to print Swedish words that contain unicode using Java
how can I do it?
for example
Text with Unicode:- \u228sk\u228da
Output: åskåda
Both of the following would work:
class Main {
public static void main(String args[]) {
System.out.println("åskåda");
System.out.println("\u00e5sk\u00e5da");
}
}
Note that you need to use the hex values and must take care of specifying the encoding when reading data (from disk or network)
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I want to compare my result(string) and I'm using following code to check it.
result = "password";
if (result.equals(R.string.myResponse)) {
//do something
}
R.string file
<string name="myResponse">password</string>
Above function is not working and doesn't get into if part.
However, If I replace R.string.myResponse with its actual value by if(result.equals("password")) then it is working fine.
What's the problem using string value from R.string
R.string.myResponse is not a string it is an ID for a string.
You need to get the string using that ID.
Something like context.getString(R.string.myResponse) or if you are in an activity or fragment then just getString(R.string.myResponse).
Replace
R.string.myResponse
with
getResources().getString(R.string.myResponse);
R.string.myResponse will return an integer value that is the ID of the particular string resource. You can use getString(R.string.myResponse) to get the String stored for that ID. To be on safe side use getResources().getString(R.string.myResponse) as getString() sometimes return null.
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I have this problem which I looked for into the net and I could be helped... I also looked other Questions and they didnt work i dont know why... So I need your help....
So this is a field in which I create the HashMap:
private HashMap <String,HashSet<String>> userBuisness = new HashMap <String,HashSet<String>>();
And this is my try to add an element (i take a line from a file, i split it and then i add these elements into my HashMap):
String output = inputReader.nextLine();
String fields[] = output.split("\t");
userBuisness.put(fields[0],fields[1]);
As #AndyTurner said in a comment:
fields[1] is a String, not a HashSet<String>. You can build the latter using new HashSet<>(Arrays.asList(fields[1])).
But there are other issues with this snippet too. It would be better to rewrite like this, pay close attention to every little detail that I changed:
private Map<String, Set<String>> userBusiness = new HashMap<>();
...
String[] fields = output.split("\t");
userBusiness.put(fields[0], new HashSet<>(Collections.singletonList(fields[1])));
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I am new to android, can anyone tell me what why is emailresult redundant?
From what I understand is that I retrieve textToUse from another method and name it email here, and then use email to undergo the matcher.find() with the result named emailresult. I then returned emailresult and after that returned the entire email.
I have mess around with it some time, like deleting emailresult and just use email. But then I will still have to create another variable to go under this location:
String emailresult = email.substring(matcher.start(), matcher.end());
It is redundant because you aren't doing anything with emailresult after assigning it a value besides returning it. You can simply do the following without the need to create a variable:
return email.substring(matcher.start(), matcher.end());
There is no need to create a variable
return email.substring(matcher.start(), matcher.end());
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In groovy is there a specific way to remove a value from a collection. For example I have a list of form fields but two of them are hidden fields and I'm trying to figure out how to remove them from the collection. The two parameters I'm trying to remove are salesKey and topicSelection. Groovy newbie so code samples are most helpful
request.requestParameterMap.collect { key, value -> "$key: ${value[0].string}" }.join("\n")
key.remove("salesKey")
key.remove("topicSelection")
I think you could use findAll:
request.requestParameterMap.findAll { key, value ->
!( key in ["salesKey", "topicSelection"] )
}
Check out this answer.
Also, depending on your specific aims, there are a couple of other ways to remove a pair, including dropWhile (which is more or less iterating over your data struct) and minus (which isn't so much removing a pair as creating a new structure without the specified pair). Official doc here.