I am a beginner in Android. I have an EditText for one letter. It accepts only characters. I need to replace entered character with the new one when the user enters different character on the keyboard. How can I achive that? Is this possible?
// Set edit text width only to one character
InputFilter[] FilterArray = new InputFilter[2];
FilterArray[0] = new InputFilter.LengthFilter(1);
FilterArray[1] = new InputFilter() {
public CharSequence filter(CharSequence source, int start, int end,
Spanned dest, int dstart, int dend) {
for (int i = start; i < end; i++) {
if (!Character.isLetter(source.charAt(i))
&& !Character.isSpaceChar(source.charAt(i))) {
return "";
}
}
return null;
}
};
editLetter.setFilters(FilterArray);
Consider using regular expressions and replaceAll as in:
// ASSERT inString not null
public static String removeTags(String inString) throws IllegalArgumentException {
if (inString == null) {throw new IllegalArgumentException();}
return inString.replaceAll("<.*>","");
}
This answer may or may not help you at all.
TextWatcher
应该可以派上用场。
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