Android EditText limit input case, uppercase to lowercase

When writing login verification, you need to convert the uppercase characters entered by the user into lowercase. Looking at the API, only inputfilter.allcaps is converting the lowercase English characters of edittext to uppercase. All right. Rely on AllCaps to write a similar inputfilter. Basically copy AllCaps's code, changed only two lines. Let's see the code.

Import Android.text.InputFilter;

Import android.text.SpannableString;
Import android.text.Spanned;
Import Android.text.TextUtils;
Contrary to Inputfilter.allcaps
public class Lowinputfilter implements Inputfilter {


@Override
Public charsequence Filter (charsequence source, int start, int end,
spanned dest, int dstart, int dend) {
for (int i = start; i < end; i++) {
if (Character.isuppercase (Source.charat (i))) {
char[] v = new Char[end-start];
Textutils.getchars (source, start, end, V, 0);
string s = new String (v). toLowerCase ();


if (source instanceof spanned) {
Spannablestring sp = new spannablestring (s);
Textutils.copyspansfrom ((spanned) source, start, end, NULL,
SP, 0);
return SP;
} else {
return s;
}
}
}

return null; Keep Original
}


}