Android Spanned Text while deleting smiles shows text

问题

I have SpannedText in EditText and I am replacing text with smiles for example cool replaced with smile. But when I am pressing Backspace on android phone (Nexus 5 kitkat 4.4.4) it shows "(Smile)cool" then it deletes the letters at last the smile itself. But on Genymotion emulator it works as needed. What is wrong with my code?

This code is in for

Drawable d = Drawable.createFromStream(ims, null);
                Bitmap b = ((BitmapDrawable)d).getBitmap();
                int spanSmileHeight = (displayHeight>displayWidth) ? ((int) ((double) displayHeight/25)) : ((int) ((double) displayWidth/25));
                int spanSmileWidth = ((int) ((double) spanSmileHeight/b.getHeight())*b.getWidth())+15;
                Bitmap bitmapResized = Bitmap.createScaledBitmap(b, spanSmileWidth, spanSmileHeight, false);
                Drawable sd = new BitmapDrawable(getResources(), bitmapResized);
                sd.setBounds(0, 0, spanSmileWidth, spanSmileHeight);
                addPattern(emoticons, smileyCode, sd);
...

ImageView.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View view) {
                        int start = Math.max(message.getSelectionStart(), 0);
                        int end = Math.max(message.getSelectionEnd(), 0);
                        message.getText().replace(Math.min(start, end), Math.max(start, end),
                                smileyCode, 0, smileyCode.length());
                        message.setText(getSmiledText(view.getContext(), message.getText()));
                        message.setSelection(start + smileyCode.length());

and this

public static boolean addSmiles(Context context, Spannable spannable) {
        boolean hasChanges = false;
        for (Map.Entry<Pattern, Drawable> entry : emoticons.entrySet()) {
            Matcher matcher = entry.getKey().matcher(spannable);
            while (matcher.find()) {
                boolean set = true;
                for (ImageSpan span : spannable.getSpans(matcher.start(),
                        matcher.end(), ImageSpan.class))
                    if (spannable.getSpanStart(span) >= matcher.start()
                            && spannable.getSpanEnd(span) <= matcher.end())
                        spannable.removeSpan(span);
                    else {
                        set = false;
                        break;
                    }
                if (set) {
                    hasChanges = true;
                    spannable.setSpan(new ImageSpan(entry.getValue(), ImageSpan.ALIGN_BOTTOM),
                            matcher.start(), matcher.end(),
                            Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
                }
            }
        }
        return hasChanges;
    }

    public static Spannable getSmiledText(Context context, CharSequence text) {
        Spannable spannable = spannableFactory.newSpannable(text);
        addSmiles(context, spannable);
        return spannable;
    }

Before bacspace

After backspace(of virtual keyobard) pressed

The log output:

09-01 06:22:21.280    1271-1271/com.nnadir.wapchat.app I/wapChat﹕ *sad**sad**sad**sad**sad**cat**cat*
09-01 06:23:32.060    1271-1271/com.nnadir.wapchat.app I/wapChat﹕ *sad**sad**sad**sad**sad**cat**cat
09-01 06:23:32.080    1271-1271/com.nnadir.wapchat.app I/wapChat﹕ *sad**sad**sad**sad**sad**cat**
09-01 06:23:32.084    1271-1271/com.nnadir.wapchat.app I/wapChat﹕ *sad**sad**sad**sad**sad**cat**cat

3 more times

09-01 06:24:07.980    1271-1271/com.nnadir.wapchat.app I/wapChat﹕ *sad**sad**sad**sad**sad**cat**ca
09-01 06:24:08.264    1271-1271/com.nnadir.wapchat.app I/wapChat﹕ *sad**sad**sad**sad**sad**cat**c
09-01 06:24:08.668    1271-1271/com.nnadir.wapchat.app I/wapChat﹕ *sad**sad**sad**sad**sad**cat**

And here smile deleted

09-01 06:24:09.248    1271-1271/com.nnadir.wapchat.app I/wapChat﹕ *sad**sad**sad**sad**sad**cat*

回答1:

I have found a way how to prevent this. If we change targetSDK to 15 then smiles are deleted succesfully.

来源：https://stackoverflow.com/questions/25566116/android-spanned-text-while-deleting-smiles-shows-text