Is there a way to limit a text field so that it only accept certain letters from an array?
Let's say I have an array:
val array = arrayOf("a", "b", "c")
I want the list to be manipulated inside code, so that the letters you can type in the text field is changed by code. How do I implement this via a class to make it accept only the letters a, b, or c?
Yes you can do this. In XML of edit text you need to use below code
android:digits="abc123"
Here abc123 are your required digits you want your edit text should accept. You can also limit to abc as your desire. So use below code
android:digits="abc"
android:digits="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
Pass whatever alphabets you want
Related
How do I set the input type for registration number. For example my university has specific format for registration number i.e. CIIT/SP17-mcs-044/Atk. I want CIIT/ATK is written already and Sp17-mcs-044 as a hint.
You can't define a random types of input type. You can only have one of these types as inputType.
If you want any custom behaviour, you might use TextWatcher and validate it
As #Tim has stated, the input type would be text over here and when user types in that EditText then check if the input is correct by using RegEx, and then show any message when the input is correct, for that you will need to add an OnTextChangedListener, about which you can learn more on official documentation.
Now, CIIT/ATK can be a TextView placed right before the EditText so it will be written already and will be uneditable. And yes, add that in final string after getting the input, like this:
finalInput = "CIIT/ATK" + input;
is there a way in android to get a list of all characters from the alphabet for a specific language ?
Thanks
I don't think that's a method for that. Instead, you can view a list of alphabets and collation orders of languages here.
Then, store them in an array using this way.
char[] alphabet = "abcdefghijklmnopqrstuvwxyz".toCharArray();
Folks,
I need to capitalize first letter of every sentence. I followed the solution posted here
First letter capitalization for EditText
It works if I use the keyboard. However, if I use setText() to programatically add text to my EditText, first letter of sentences are not capitalized.
What am I missing? Is there a easy way to fix or do I need to write code to capitalize first letters in my string before setting it to EditText.
The only thing the inputType flag does is suggest to the input method (e.g. keyboard) what the user is attempting to enter. It has nothing to do with the internals of text editing in the EditText view itself, and input methods are not required to support this flag.
If you need to enforce sentence case, you'll need to write a method which does this for you, and run your text through this method before applying it.
You can use substring to make this
private String capSentences( final String text ) {
return text.substring( 0, 1 ).toUpperCase() + text.substring( 1 ).toLowerCase();
}
Setting inputType doesn't affect anything put into the field programmatically. Thankfully, programmatically capitalizing the first letter is pretty easy anyway.
public static String capFirstLetter(String input) {
return input.substring(0,1).toUpperCase() + input.substring(1,input.length());
}
Looking on input types that a EditText view can have i seen "textPersonName" and i try to search a way to (if possible) split name and surname using maybe a method like editText.getName. My question is exist a method of edittext that splits name and surname in edittext? And if don't exist the best way is to use split or else?
The textPersonName is just a style option, for instance it capitalizes the first letter of each word. It won't help you distinguish first and last names. However you can search for spaces, for instance:
String[] names = editText.getText().toString().split(" ");
The Array of Strings will have each name in a different String. If the user entered: John Doe you would have "John" in names[0] and "Doe" in names[1].
Friend's
I'm working upon searching in maps, here i have string in my array,when i enter characters for searching in Edit text box,i need the string have started with similar character in my result.
for example in my array i have String[] name ={"A","B","BB","Boys","Box"}
Initially i have all the array string in my result,if i suppose enter an character like b in editbox i need filter and show the charcters matches with b that is "B","BB",""Boys","Box",if suppose i enter two characters like "bo"in editbox ,i need result strings "Boys","Box"in another array.
Help me.
thanks in advance.
Consider using AutoCompleteTextView instead of simple EditText.