86164

EditText in Google Android

Question:

I want to create the <strong>EditText</strong> which allow <strong>Numeric Values</strong>, <strong>Comma</strong> and <strong>Delete</strong> and other values are ignore.

So How I can achieve this by programming code ?

Thanks.

Answer1:

I achieved same thing using follwing code, hope you will also find help from it.

editText.addTextChangedListener(controller); @Override public void afterTextChanged(Editable s) { if(s.trim.length() > 0) { int start = s.toString().length() - 1; int a = (int) s.charAt(start); if (!(a >= 48 && a <= 57 || a == 44)) s = s.delete(start, start + 1); } } @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { } @Override public void onTextChanged(CharSequence s, int start, int before, int count) { }

Answer2:

To restrict what characters can be typed into an android EditText, you must set them in the android:digits XML attribute. See <a href="http://developer.android.com/reference/android/widget/TextView.html#attr_android:digits" rel="nofollow">http://developer.android.com/reference/android/widget/TextView.html#attr_android:digits</a> . Make sure to also validate user input before putting it into storage.

Answer3:

just simple ,

you want to create a text-field like that you can enter the new string must have some grammar that you want to allow.

i have some email validation grammar that can help you.

string = "/alphabetics/number/special-character" ;

and another is

user-entered-string = " ";

just compare user-entered-string's lexems and you defined grammar.

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