Android实现EditText中添加和删除bitmap的方法

SpannableString mSpan1 = new SpannableString("1");/** this is add bitmap on edit text*/private void displayBitmapOnText(Bitmap thumbnailBitmap) {if(thumbnailBitmap == null)return;    int start = mEditText.getSelectionStart();    mSpan1.setSpan(new ImageSpan(thumbnailBitmap) , mSpan1.length() - 1, mSpan1.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);//    mSpan1.toString();    if(mEditText != null) {      Editable et = mEditText.getText();      et.insert(start, mSpan1);      mEditText.setText(et);      mEditText.setSelection(start + mSpan1.length());    }    mEditText.setLineSpacing(10f, 1f);}/** this is delete bitmap on edit text* from end to start*/private void deleteEditTextSpan() {    Spanned s = mEditText.getEditableText();    ImageSpan[] imageSpan = s.getSpans(0, s.length(), ImageSpan.class);     for (int i = imageSpan.length - 1; i >= 0; i--) {      if(i == imageSpan.length - 1) {        int start = s.getSpanStart(imageSpan[i]);        int end = s.getSpanEnd(imageSpan[i]);        Editable et = mEditText.getText();        et.delete(start, end);      }    }    mEditText.invalidate();}