字符串中带有emoji表情处理

1：先删除字符然后解析当前字符再显示

edit.addTextChangedListener(new TextWatcher() {    @Override    public void beforeTextChanged(CharSequence s, int start, int count, int after) {    }

    @Override    public void onTextChanged(CharSequence s, int start, int before, int count) {    }

    @Override    public void afterTextChanged(Editable s) {        send.setEnabled(!s.toString().isEmpty());        int start = edit.getSelectionStart();        int end = edit.getSelectionEnd();        edit.removeTextChangedListener(this);        CharSequence cs = EmojiManager.parse(s.toString(), edit.getTextSize());        Toast.makeText(login.this,cs.toString(),Toast.LENGTH_SHORT).show();        edit.setText(cs, TextView.BufferType.SPANNABLE);        edit.setSelection(start, end);        edit.addTextChangedListener(this);    }});2：解析方法  判断每个字符的是否为表情然后做处理

public static CharSequence parse(String text, float textSize) {    if (text == null) {        return "";    }    //将字符串转换为数组    final char[] chars = text.toCharArray();    final SpannableStringBuilder ssb = new SpannableStringBuilder(text);

    int codePoint;    boolean isSurrogatePair;    for (int i = 0; i < chars.length; i++) {        if (Character.isHighSurrogate(chars[i])) {            continue;        } else if (Character.isLowSurrogate(chars[i])) {            if (i > 0 && Character.isSurrogatePair(chars[i - 1], chars[i])) {                codePoint = Character.toCodePoint(chars[i - 1], chars[i]);                isSurrogatePair = true;            } else {                continue;            }        } else {            codePoint = (int) chars[i];            isSurrogatePair = false;        }

        if (emojiCodeList.contains(codePoint)) {            Bitmap bitmap = BitmapFactory.decodeResource(gContext.getResources(), getResourceByCode(codePoint));            BitmapDrawable bmpDrawable = new BitmapDrawable(gContext.getResources(), bitmap);            bmpDrawable.setBounds(0, 0, (int) textSize, (int) textSize);            CenterImageSpan imageSpan = new CenterImageSpan(bmpDrawable);            ssb.setSpan(imageSpan, isSurrogatePair ? i - 1 : i, i + 1, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);        }    }    return ssb;}

private static class CenterImageSpan extends ImageSpan {

    public CenterImageSpan(Drawable draw) {        super(draw);    }

    @Override    public void draw(Canvas canvas, CharSequence text, int start, int end, float x,                     int top, int y, int bottom, Paint paint) {        Drawable b = getDrawable();        Paint.FontMetricsInt fm = paint.getFontMetricsInt();        int transY = ((bottom - top) - getDrawable().getBounds().bottom) / 2 + top;        canvas.save();        canvas.translate(x, transY);        b.draw(canvas);        canvas.restore();    }}