Question

我在下面使用textwatcher在多行模式下使用editText，但editText行为很奇怪。 Evertime我的编辑文本中有超过1个图像跨度，并尝试在它们之间写入文本，文本将以其中一个跨度编写。

public class Messenger_Image_Handler implements TextWatcher{

    private final EditText editText;
    private final ArrayList<ImageSpan> imagesToRemove = new ArrayList<ImageSpan>();
    private final ArrayList<Char_SpanEnd_Holder> charToChange = new ArrayList<Char_SpanEnd_Holder>();

    public Messenger_Image_Handler(EditText editText)
    {
        this.editText = editText;
    }

    public void insertImage(String imgPattern, Drawable d)
    {
        d.setBounds(0, 0, d.getIntrinsicWidth(), d.getIntrinsicHeight());
        ImageSpan span = new ImageSpan(d, ImageSpan.ALIGN_BASELINE);

        // Get the selected text.
        int start = editText.getSelectionStart();
        int end = editText.getSelectionEnd();
        Editable message = editText.getEditableText();

        // Insert the image
        message.replace(start, end, imgPattern);
        message.setSpan(span, start, start + imgPattern.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
    }

    @Override
    public void beforeTextChanged(CharSequence s, int start, int count,
            int after) 
    {   
        // Check if some text will be removed.
        if (count > 0) 
        {   
            int end = start + count;
            Editable message = editText.getEditableText();
            ImageSpan[] list = message.getSpans(start, end, ImageSpan.class);

            for (ImageSpan span : list) 
            {
                // Get only the images that are inside of the changed
                // region.
                int spanStart = message.getSpanStart(span);
                int spanEnd = message.getSpanEnd(span);
                if ((spanStart < end) && (spanEnd > start)) 
                {
                    // Add to remove list
                    imagesToRemove.add(span);
                }
            }
        }
    }

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

    }

    @Override
    public void afterTextChanged(Editable s) 
    {       
        //Commit the images to be removed.
        for (ImageSpan span : imagesToRemove) 
        {
            Editable message = editText.getEditableText();

            int start = message.getSpanStart(span);
            int end = message.getSpanEnd(span);

            // Remove the span
            message.removeSpan(span);

            // Remove the remaining image text.
            if (start != end) 
            {
                message.delete(start, end);
            }
        }
        imagesToRemove.clear();
    }

}

这是我用来创建我的跨度的函数：

private void insertNewImageIntoEditText(String path) 
{
    //Create bitmap
    File image = new File(path);    
    Bitmap bitmap = BitmapFactory.decodeFile(image.getAbsolutePath());

    Drawable d = new BitmapDrawable(bitmap);

    //Increase current pictures
    pictureID ++;

    //Current Img Pattern with id
    String imgPattern = "[#!-" + pictureID + "-!#]";

    //Add img to the hashmap
    //picturesHashMap.put(imgPattern, path);

    imageHandler.insertImage(imgPattern, d);
}

图片ID和图片散列图用于稍后识别图片位置。如果编辑文本中只有一张图片，则文本如下所示：“测试测试[＃！ - 1 - ！＃]测试测试”。但是，如果我使用2或更多并尝试在它们之间写，文本看起来像这样：“测试[＃！ - 1 - ！#testtest] [＃！ - 2 - ！＃]”。我希望有人找到解决这个问题的方法。

Android Spannable图片字符串无法正常使用编辑文字多行

0 个答案: