android 屏蔽emoji表情

public class EmojiFilter implements InputFilter {

private String content;
Pattern pattern = Pattern.compile( "[\ud83c\udc00-\ud83c\udfff]|[\ud83d\udc00-\ud83d\udfff]|[\u2600-\u27ff]",  Pattern . UNICODE_CASE | Pattern . CASE_INSENSITIVE );

public EmojiFilter(String content) {
super();
this.content = content;
}

public EmojiFilter() {

}

@Override
public CharSequence filter(CharSequence sourse, int strat, int end,
Spanned dest, int dstart, int dend) {
Matcher matcher = pattern.matcher(sourse);
if(matcher.find()  ){
return "" ;
}
return null;
}

}