Android implements methods for adding and removing bitmap in EditText

This article illustrates how Android implements adding and removing bitmap in EditText. To share with you for your reference, as follows:

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();
}

ps: I've found a lot of things on the Internet that call the soft keyboard directly and then delete it. This is not what I want, this deleteEditTextSpan() is triggered by a custom button.

For more information on Android components, please refer to the Android Usage Summary.

I hope this article is helpful to Android program design.