如何处理editText中imageSpan上的onClick事件? [英] How to handle onClick event on imageSpan in editText?

问题描述

我正在开发一个应用程序，在该应用程序中，用户从图库中选择图像，并将其添加到editText中，现在我想如果用户单击editText中的图像，则应在全屏模式下打开它，我使用以下代码:-

i am working on an app in which user choose an image from gallery and it will be added in editText, now i want if user click on image in editText it should open in fullScreen, i used below code :-

public void addToEdt(Bitmap bitmap){
    SpannableString ss = new SpannableString("abc");
    Drawable d = new BitmapDrawable(getResources(), bitmap);
    d.setBounds(0, 0, d.getIntrinsicWidth(), d.getIntrinsicHeight());
    ImageSpan span = new ImageSpan(d, ImageSpan.ALIGN_BASELINE);
    ss.setSpan(span, 0, 3, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
    edt_note.setTransformationMethod(null);
    edt_note.getText().insert(edt_note.getSelectionStart(), ss);

    final int start = ss.getSpanStart(span);
    final int end = ss.getSpanEnd(span);

    ClickableSpan click_span = new ClickableSpan() {
        @Override
        public void onClick(View widget) {
                   Toast.makeText(getApplicationContext(),"Clicked",Toast.LENGTH_LONG).show();
        }
    };

    ClickableSpan[] click_spans = ss.getSpans(start, end,  ClickableSpan.class);

    if(click_spans.length != 0) {
        // remove all click spans
        for (ClickableSpan c_span : click_spans) {
            ss.removeSpan(c_span);
        }
    }

    ss.setSpan(click_span, start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
}

尝试了以上代码，但未监听onClick事件， 现在，我该如何监听这张图片上的点击事件并做进一步的工作?

tried above code but its not listening onClick event, now, how can i listen click event on this image and do further task?

推荐答案

可点击的跨度，位于editText的相同开始和结束位置.

Clickable Span at the same start and end locations of the editText.

sb.setSpan(cs, imageStartSpan,imageEndSpan , Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

也

editText.setMovementMethod(LinkMovementMethod.getInstance());

我无法为您编写整个代码.尝试以下示例:-

I cannot write the whole code for you. Try the below sample:-

public void addToEdt(Bitmap bitmap){
    SpannableString ss = new SpannableString();
    Drawable d = new BitmapDrawable(getResources(), bitmap);
    d.setBounds(0, 0, d.getIntrinsicWidth(), d.getIntrinsicHeight());
    ss.append("abc"); // Append the text here
    ImageSpan span = new ImageSpan(d, ImageSpan.ALIGN_BASELINE);
    ss.setSpan(span, 0, 2, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); // start(0) and end (2) will create an image span over abc text
    ss.setSpan(new ClickableSpan() {
                @Override
                public void onClick(View widget) {
                    ss.delete(0, 2);
                    editText.setText(ss);
                }
            },0, 2, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); // this will add a clickable span and on click will delete the span and text
    editText.setText(ss); // this will show your image/clickable span in edittext
}


editText.setMovementMethod(LinkMovementMethod.getInstance());

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